CA1286231C - Magnet filter - Google Patents
Magnet filterInfo
- Publication number
- CA1286231C CA1286231C CA000526762A CA526762A CA1286231C CA 1286231 C CA1286231 C CA 1286231C CA 000526762 A CA000526762 A CA 000526762A CA 526762 A CA526762 A CA 526762A CA 1286231 C CA1286231 C CA 1286231C
- Authority
- CA
- Canada
- Prior art keywords
- screw head
- recess
- screw
- combination
- oil reservoir
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/28—Magnetic plugs and dipsticks
- B03C1/286—Magnetic plugs and dipsticks disposed at the inner circumference of a recipient, e.g. magnetic drain bolt
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/06—Arrangements for conditioning of lubricants in the lubricating system by filtration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
- F01M2001/1028—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the type of purification
- F01M2001/1042—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the type of purification comprising magnetic parts
Abstract
ABSTRACT OF THE DISCLOSURE
The known magnet filter for removing magnetic metal powder mixed with oil in an oil reservoir or the like is improved so as to be easily mounted to and dis-mounted from the oil reservoir. The improvements exists in that a recess is formed on a top surface of a screw head having a screw rod studded on its bottom surface and a permanent magnet piece is fitted in said recess.
The known magnet filter for removing magnetic metal powder mixed with oil in an oil reservoir or the like is improved so as to be easily mounted to and dis-mounted from the oil reservoir. The improvements exists in that a recess is formed on a top surface of a screw head having a screw rod studded on its bottom surface and a permanent magnet piece is fitted in said recess.
Description
~2B6Z31 MAGNET FILTER
BACKGROUND OF THE INVENTION:
The present invention relates to a magnet filter adapted to be mounted in a gear box or in other oil reservoirs.
In recent years, as the above-mentioned type of magnet filters, planar members in which a permanent magnet piece is wrapped up by a magnetically permeable plate made of magnetic metal have been proposed as disclosed in Japanese Utility Model Publications Nos. 61-7796 and 61-7797, and they are constructed so as to be fixedly secured to a mount portion provided on an inner wall surface of a gear box or other oil reservoirs.
However, in the case of the above-mentioned magnet filters in the prior art, the space for mounting the filter in an oil reservoir or the like becomes large, it is difficult to mount the oil filter at various loca-tions, thus in view of design the mounting positions for the oil filters are limited, and so, it is difficult to mount the oil filter at the most effective position in view of the characteristics of the filter. Furthermore, there is a shortcoming that dismounting of the oil filter is difficult.
~.
` ~ --~
~2~3~Z31 SUMMARY OF THE INVENTION:
It is therefore one object of the present inven-tion to provide a novel oil filter which is free from the above-mentioned shortcomings in the prior art.
A more specific object of the present invention is -to provide a novel oil filter which necessitates only a small space for mounting, and which can be mounted at various locations in an oil reservoir or the like without being restricted to a particular position and hence can be mo~nted at the most effective position.
Another specific object of the present invention is to provide a novel oil filter which can be easily dis-mounted from its mount position in an oil reservoir or the like.
According to one feature of the present inven-tion, there is provided an improved oil filter in which a recess is formed on a top surface of a screw head having a screw rod studded on its bottom surface and a permanent magnet piece is fitted in the recess.
Since the magnet filter according to the present invention is cons-tructed in the above-described manner, in use the screw rod portion of the magnet filter is threadedly mounted or mounted with the aid of a nut in a mounting hole formed in a peripheral wall of an oil reser-voir or in another component part disposed within an oil ~2~36231 reservoir so that the above-mentioned screw head may be positioned within -the oil reservoir, and iron powder mixed with the oil within the oil reservoir is adsorbed by the permanent magnet piece fitted in the recess formed on the top surface of the screw head disposed within the oil reservoir. Then, the fi~ing between the screw rod and the mounting hole formed in the peripheral wall of the oil reservoir or in the other component part disposed within the oil reservoir is released, and by removing the magnet filter from the oil reservoir, the adsorbed iron powder can be removed.
As described above, according to the present invention, owing to the fact that a magnet filter is form-ed in a screw-plug shape, a permanent magnet piece is fitted in a recess formed on a top surface of a screw head, and a screw rod studded on a bottom surface of the same screw head is detachably mounted in a mounting hole formed in a peripheral wall of an oil reservoir or in another component part disposed within an oil reservoir, mounting and dismounting of the oil fil-ter is simple and easy, a space necessitated for mounting the oil filter is small, the oil filter can be mounted in a stable s-tate at various locations, and mounting of the oil filter at an effective position in view of the characteristics of the filter can be achieved easily.
BACKGROUND OF THE INVENTION:
The present invention relates to a magnet filter adapted to be mounted in a gear box or in other oil reservoirs.
In recent years, as the above-mentioned type of magnet filters, planar members in which a permanent magnet piece is wrapped up by a magnetically permeable plate made of magnetic metal have been proposed as disclosed in Japanese Utility Model Publications Nos. 61-7796 and 61-7797, and they are constructed so as to be fixedly secured to a mount portion provided on an inner wall surface of a gear box or other oil reservoirs.
However, in the case of the above-mentioned magnet filters in the prior art, the space for mounting the filter in an oil reservoir or the like becomes large, it is difficult to mount the oil filter at various loca-tions, thus in view of design the mounting positions for the oil filters are limited, and so, it is difficult to mount the oil filter at the most effective position in view of the characteristics of the filter. Furthermore, there is a shortcoming that dismounting of the oil filter is difficult.
~.
` ~ --~
~2~3~Z31 SUMMARY OF THE INVENTION:
It is therefore one object of the present inven-tion to provide a novel oil filter which is free from the above-mentioned shortcomings in the prior art.
A more specific object of the present invention is -to provide a novel oil filter which necessitates only a small space for mounting, and which can be mounted at various locations in an oil reservoir or the like without being restricted to a particular position and hence can be mo~nted at the most effective position.
Another specific object of the present invention is to provide a novel oil filter which can be easily dis-mounted from its mount position in an oil reservoir or the like.
According to one feature of the present inven-tion, there is provided an improved oil filter in which a recess is formed on a top surface of a screw head having a screw rod studded on its bottom surface and a permanent magnet piece is fitted in the recess.
Since the magnet filter according to the present invention is cons-tructed in the above-described manner, in use the screw rod portion of the magnet filter is threadedly mounted or mounted with the aid of a nut in a mounting hole formed in a peripheral wall of an oil reser-voir or in another component part disposed within an oil ~2~36231 reservoir so that the above-mentioned screw head may be positioned within -the oil reservoir, and iron powder mixed with the oil within the oil reservoir is adsorbed by the permanent magnet piece fitted in the recess formed on the top surface of the screw head disposed within the oil reservoir. Then, the fi~ing between the screw rod and the mounting hole formed in the peripheral wall of the oil reservoir or in the other component part disposed within the oil reservoir is released, and by removing the magnet filter from the oil reservoir, the adsorbed iron powder can be removed.
As described above, according to the present invention, owing to the fact that a magnet filter is form-ed in a screw-plug shape, a permanent magnet piece is fitted in a recess formed on a top surface of a screw head, and a screw rod studded on a bottom surface of the same screw head is detachably mounted in a mounting hole formed in a peripheral wall of an oil reservoir or in another component part disposed within an oil reservoir, mounting and dismounting of the oil fil-ter is simple and easy, a space necessitated for mounting the oil filter is small, the oil filter can be mounted in a stable s-tate at various locations, and mounting of the oil filter at an effective position in view of the characteristics of the filter can be achieved easily.
2~ 31 Furthermore~ in the case of the magnet filter according to the present invention, since a permanent magnet piece for adsorbing iron powder is fitted in a recess formed on a top surface of a screw head, an iron adsorptive area of a permanent magnet piece can be designed large, and so a performance of an oil filter can be improved.
The above-mentioned and other objects, features and advantages of the present invention will become more apparent by reference to the following description of preferred embodiments of the invention taken in conjunction with the accompanying drawings.
To this end, in one of its aspects, the invention provides a magnet filter in combination with an oil reservoir, comprising:
a magnet filter comprising a screw plug having a screw head engageable with a tool for rotating the screw head and a screw rod, the screw rod having a diameter less than that of the screw head and extending from a bottom surface of the screw head and a top surface of the screw head having a recess therein; and means for contacting oil containing iron powder and for retaining iron powder thereon comprising a permanent magnet piece fitted in the recess of the screw head; and a wall of an oil reservoir, the wall having a threaded hole therein and the screw rod being threadedly 2~tj23~
engaged with the threaded hole such that the screw head is located within the oil reservoir and the magnet filter is removah:~y mounted in the oil reservoir.
In another of its aspects, the invention provides a magnet filter in combination with an oil reservoir, comprising:
a magnet filter comprising a screw plug having a screw head engageable with a tool for rotating the screw head and a screw rod, the screw rod having a diameter less than that of the screw head and extending from a bottom surface of the screw head and a top surface of the screw head and having a recess therein; and means for contacting oil containing iron powder and for retaining iron powder thereon comprising a permanent magnet piece fitted in the recess of the screw head;
a wall of an oil reservoir; and a bracket within the reservoir and attached to the wall, the bracket having a hole therein and the screw rod extending therethrough such that the screw head is located within the oil reservoir and the magnet rilter is removably mounted in the oil reservoir.
In yet another of its aspects the invention provides a magnet filter in combination with an oil reservoir, comprising:
- 4a -2~36Z3~1 a magnet filter comprising a screw plug having a screw head and a screw rod, the screw rod having a diameter less than that of the screw head and extending from a bottom surface of the screw head and a top surface of the screw head having a recess therein, the screw rod having a bore in a free end thereof so as to be engageable with a rod spanner; and means for contacting oil containing iron powder and for retaining iron powder thereon comprising a permanent magnet piece fitted in the recess of the screw head; and a wall of an oil reservoir, said wall having a threaded hole therethrough and the screw rod being threadedly engaged with the threaded hole such that the screw head is located within the oil reservoir and the magnet filter is removable mounted in the oil reservoir.
In still another aspect of the invention, it provides A magnet filter in combination with an oil reservoir, comprising:
a magnet filter comprising a screw plug having a screw head engageable with a tool for rotating the screw head and a screw rod, the screw rod having a diameter less than that of the screw head and extending from a bottom surface of the screw head and a top surface of the screw head having a recess therein; and means for contacting oil containing iron powder and for retaining iron powder thereon - 4b -~21il~iZ3 ~
comprising a permanent magnet piece fitted in the recess of the screw head; and a wall of an oil reservoir, the wall having a hole therethrough, the screw rod extending through the wall and means for removably securing the magnet filter to the wall such that the screw head is located within the oil reservoir and the magnet filter is removably mounted in the oil reservoir.
BRIEF DESCRIPTION OF THE DRAWINGS:
In the accompanying drawings:
Fig. 1 is a longitudinal cross-section side view showing one preferred embodiment of the magnet filter according to the present invention;
Fig. 2 is a side view of the same;
Figs. 3 to 6, respectively, are longitudinal cross-section views showing different states of use of the same magnet filter;
Fig. 7 is a longitudinal cross-section view showing a state of use of another preferred embodiment of the magnet filter according to the present invention;
~2t3t~231 Fig. 8 is a side view showing s-till another preferred embodiment of the magnet filter according -to the present invention; and Fig. 9 is a lQngi-tudinal cross-section side view of the same magnet filter.
DESCRIPTION OF THE PREFERRED EMBODIMENTS:
Referring now to Figs. 1 and 2 which show one preferred embodiment of the present invention, a cylin-drical recess (3) is formed on a top surface of a screw head (2) of hexagonal cylinder shape having a screw rod (1) studded on its bottom surface, and a permanent magnet piece (4) of short circular cylinder shape is fitted in the recess (3). In Fig. 1, reference numeral (5) desig-nates a non-magnetic metal ring made of aluminium or the like and fitted in an annular space between the permanent magnet piece (4) and a peripheral wall of the cylindrical recess (3).
Since the illustrated embodiment is constructed as described above, the above-mentioned screw rod (1) is threadedly fitted in a screw hole (6) penetra-ted through a peripheral wall of an oil reservoir (A) from the inside of the oil reservoir (A) with the top surface of the screw head placed inside of -the oil reservoir (A), and iron powder mixed in the oil within the oil reservoir (A) ~36231 is adsorbed by the permanent magnet piece (4) fitted in the recess (3) of the screw head (2).
Subsequently, the above-described magnet filter is dismounted from the screw hole (6) of the oil reservoir (A) by unscrewing the screw rod (1) in the opposite direc-tion to the previous screwing, and then the adsorbed iron powder is removed.
Figs. 4 to 6, respectively, illustrate examples of use of the above-described magnet filter, in the example shown in Fig. 4 the screw rod (1) of the magnetic filter is penetrated through a through-hole formed in an oil reservoir (A), and a nut (7) is threadedly engaged with the portion of the screw rod (1) projecting from the through-hole and then fastened. In this figure, reference numeral (~) designates a washer.
In the example shown in Fig. 5, a blind screw hole (9) is formed in a peripheral wall of an oil reser-voir (A), and the screw rod (1) of the magnet filter is threadedly fitted in the same screw hole (9).
In the example shown in Fig. 6, the screw rod (1) of the above-described magnet filter is penetrated through a through-hole formed in another component part (8) mounted within an oil reservoir (A), and a nut (10) is threadedly engaged with -the portion of the screw rod (1) projecting from the same through-hole.
~8623~
It is to be noted that the magnet filter could be mounted to the above-described other component part (B) through the me-thod illus-trated in Figs. 3 to 5.
As described above, according to the illustra-ted embodiment, by forming a magnet filter of screw-plug shape in which a permanent magnet piece (4) is fitted in a recess (3) formed on a top surface of a screw head (2) having a screw rod (1) studded on its bottom surface, the magnet filter can be easily mounted to and dismounted from an oil reservoir (A) or another component part mount-ed to an oil reservoir (A), furthermore a space neces-sitated for mounting and dismounting of the magnet filter can be made small, and the magnet filter can be mounted at a desired location.
In addition, since the permanent magnet piece (4) for adsorbing iron powder is fitted in the recess (3) formed on the top surface of the screw head (2), it is possible to increase an iron powder adsorptive area of the permanent magnet piece (4~ and thereby improve a performance of a magnet filter.
Fig. 7 shows another preferred embodiment of the present invention, in which a hexagonal cylinder bore (11) is drilled in a -tip end portion of a screw rod (1), hence after -the screw rod (1) has been screwed into a screw hole (6) formed in the wall of the oil reservoir ~Z~3~231 (A), a hexagonal rod spanner is engaged with the hexagonal cylinder bore (11) drilled in the screw rod (1), and there-by the screw rod (1) can be fastened -to the wall of the oil reservoir (A) ex-ternally thereof. Likewise, the oil fil-ter can be dismounted externally of the oil reservoir (A). It is to be noted that in Fig. 7, component parts equivalent to those of the preceding embodiments are given like reference numerals.
Figs. 8 and 9 illustrate still another preferred embodiment of the present invention in which a relatively thick permanent magnet piece (4) is fitted in a recess (3) of a screw head (2) so that a part of the permanent magnet piece (4) may project outside of the screw head (2), and thereby an iron powder adsorptive area of the permanent lS magnet piece (4) is increased. It is to be noted that in Figs. 8 and 9 also, component parts equivalent to those of the preceding smbodiments are given like reference numerals.
While a principle of the present invention has been described above in connection to preferred embodiments of the invention, it is a matter of course that many ap-parently widely different embodiments of the present inven-tion could be made without departing from -the spirit of the presen-t invention.
The above-mentioned and other objects, features and advantages of the present invention will become more apparent by reference to the following description of preferred embodiments of the invention taken in conjunction with the accompanying drawings.
To this end, in one of its aspects, the invention provides a magnet filter in combination with an oil reservoir, comprising:
a magnet filter comprising a screw plug having a screw head engageable with a tool for rotating the screw head and a screw rod, the screw rod having a diameter less than that of the screw head and extending from a bottom surface of the screw head and a top surface of the screw head having a recess therein; and means for contacting oil containing iron powder and for retaining iron powder thereon comprising a permanent magnet piece fitted in the recess of the screw head; and a wall of an oil reservoir, the wall having a threaded hole therein and the screw rod being threadedly 2~tj23~
engaged with the threaded hole such that the screw head is located within the oil reservoir and the magnet filter is removah:~y mounted in the oil reservoir.
In another of its aspects, the invention provides a magnet filter in combination with an oil reservoir, comprising:
a magnet filter comprising a screw plug having a screw head engageable with a tool for rotating the screw head and a screw rod, the screw rod having a diameter less than that of the screw head and extending from a bottom surface of the screw head and a top surface of the screw head and having a recess therein; and means for contacting oil containing iron powder and for retaining iron powder thereon comprising a permanent magnet piece fitted in the recess of the screw head;
a wall of an oil reservoir; and a bracket within the reservoir and attached to the wall, the bracket having a hole therein and the screw rod extending therethrough such that the screw head is located within the oil reservoir and the magnet rilter is removably mounted in the oil reservoir.
In yet another of its aspects the invention provides a magnet filter in combination with an oil reservoir, comprising:
- 4a -2~36Z3~1 a magnet filter comprising a screw plug having a screw head and a screw rod, the screw rod having a diameter less than that of the screw head and extending from a bottom surface of the screw head and a top surface of the screw head having a recess therein, the screw rod having a bore in a free end thereof so as to be engageable with a rod spanner; and means for contacting oil containing iron powder and for retaining iron powder thereon comprising a permanent magnet piece fitted in the recess of the screw head; and a wall of an oil reservoir, said wall having a threaded hole therethrough and the screw rod being threadedly engaged with the threaded hole such that the screw head is located within the oil reservoir and the magnet filter is removable mounted in the oil reservoir.
In still another aspect of the invention, it provides A magnet filter in combination with an oil reservoir, comprising:
a magnet filter comprising a screw plug having a screw head engageable with a tool for rotating the screw head and a screw rod, the screw rod having a diameter less than that of the screw head and extending from a bottom surface of the screw head and a top surface of the screw head having a recess therein; and means for contacting oil containing iron powder and for retaining iron powder thereon - 4b -~21il~iZ3 ~
comprising a permanent magnet piece fitted in the recess of the screw head; and a wall of an oil reservoir, the wall having a hole therethrough, the screw rod extending through the wall and means for removably securing the magnet filter to the wall such that the screw head is located within the oil reservoir and the magnet filter is removably mounted in the oil reservoir.
BRIEF DESCRIPTION OF THE DRAWINGS:
In the accompanying drawings:
Fig. 1 is a longitudinal cross-section side view showing one preferred embodiment of the magnet filter according to the present invention;
Fig. 2 is a side view of the same;
Figs. 3 to 6, respectively, are longitudinal cross-section views showing different states of use of the same magnet filter;
Fig. 7 is a longitudinal cross-section view showing a state of use of another preferred embodiment of the magnet filter according to the present invention;
~2t3t~231 Fig. 8 is a side view showing s-till another preferred embodiment of the magnet filter according -to the present invention; and Fig. 9 is a lQngi-tudinal cross-section side view of the same magnet filter.
DESCRIPTION OF THE PREFERRED EMBODIMENTS:
Referring now to Figs. 1 and 2 which show one preferred embodiment of the present invention, a cylin-drical recess (3) is formed on a top surface of a screw head (2) of hexagonal cylinder shape having a screw rod (1) studded on its bottom surface, and a permanent magnet piece (4) of short circular cylinder shape is fitted in the recess (3). In Fig. 1, reference numeral (5) desig-nates a non-magnetic metal ring made of aluminium or the like and fitted in an annular space between the permanent magnet piece (4) and a peripheral wall of the cylindrical recess (3).
Since the illustrated embodiment is constructed as described above, the above-mentioned screw rod (1) is threadedly fitted in a screw hole (6) penetra-ted through a peripheral wall of an oil reservoir (A) from the inside of the oil reservoir (A) with the top surface of the screw head placed inside of -the oil reservoir (A), and iron powder mixed in the oil within the oil reservoir (A) ~36231 is adsorbed by the permanent magnet piece (4) fitted in the recess (3) of the screw head (2).
Subsequently, the above-described magnet filter is dismounted from the screw hole (6) of the oil reservoir (A) by unscrewing the screw rod (1) in the opposite direc-tion to the previous screwing, and then the adsorbed iron powder is removed.
Figs. 4 to 6, respectively, illustrate examples of use of the above-described magnet filter, in the example shown in Fig. 4 the screw rod (1) of the magnetic filter is penetrated through a through-hole formed in an oil reservoir (A), and a nut (7) is threadedly engaged with the portion of the screw rod (1) projecting from the through-hole and then fastened. In this figure, reference numeral (~) designates a washer.
In the example shown in Fig. 5, a blind screw hole (9) is formed in a peripheral wall of an oil reser-voir (A), and the screw rod (1) of the magnet filter is threadedly fitted in the same screw hole (9).
In the example shown in Fig. 6, the screw rod (1) of the above-described magnet filter is penetrated through a through-hole formed in another component part (8) mounted within an oil reservoir (A), and a nut (10) is threadedly engaged with -the portion of the screw rod (1) projecting from the same through-hole.
~8623~
It is to be noted that the magnet filter could be mounted to the above-described other component part (B) through the me-thod illus-trated in Figs. 3 to 5.
As described above, according to the illustra-ted embodiment, by forming a magnet filter of screw-plug shape in which a permanent magnet piece (4) is fitted in a recess (3) formed on a top surface of a screw head (2) having a screw rod (1) studded on its bottom surface, the magnet filter can be easily mounted to and dismounted from an oil reservoir (A) or another component part mount-ed to an oil reservoir (A), furthermore a space neces-sitated for mounting and dismounting of the magnet filter can be made small, and the magnet filter can be mounted at a desired location.
In addition, since the permanent magnet piece (4) for adsorbing iron powder is fitted in the recess (3) formed on the top surface of the screw head (2), it is possible to increase an iron powder adsorptive area of the permanent magnet piece (4~ and thereby improve a performance of a magnet filter.
Fig. 7 shows another preferred embodiment of the present invention, in which a hexagonal cylinder bore (11) is drilled in a -tip end portion of a screw rod (1), hence after -the screw rod (1) has been screwed into a screw hole (6) formed in the wall of the oil reservoir ~Z~3~231 (A), a hexagonal rod spanner is engaged with the hexagonal cylinder bore (11) drilled in the screw rod (1), and there-by the screw rod (1) can be fastened -to the wall of the oil reservoir (A) ex-ternally thereof. Likewise, the oil fil-ter can be dismounted externally of the oil reservoir (A). It is to be noted that in Fig. 7, component parts equivalent to those of the preceding embodiments are given like reference numerals.
Figs. 8 and 9 illustrate still another preferred embodiment of the present invention in which a relatively thick permanent magnet piece (4) is fitted in a recess (3) of a screw head (2) so that a part of the permanent magnet piece (4) may project outside of the screw head (2), and thereby an iron powder adsorptive area of the permanent lS magnet piece (4) is increased. It is to be noted that in Figs. 8 and 9 also, component parts equivalent to those of the preceding smbodiments are given like reference numerals.
While a principle of the present invention has been described above in connection to preferred embodiments of the invention, it is a matter of course that many ap-parently widely different embodiments of the present inven-tion could be made without departing from -the spirit of the presen-t invention.
Claims (20)
1. A magnet filter in combination with an oil reservoir, comprising:
a magnet filter comprising a screw plug having a screw head engageable with a tool for rotating the screw head and a screw rod, the screw rod having a diameter less than that of the screw head and extending from a bottom surface of the screw head and a top surface of the screw head having a recess therein; and means for contacting oil containing iron powder and for retaining iron powder thereon comprising a permanent magnet piece fitted in the recess of the screw head; and a wall of an oil reservoir, the wall having a threaded hole therein and the screw rod being threadedly engaged with the threaded hole such that the screw head is located within the oil reservoir and the magnet filter is removably mounted in the oil reservoir.
a magnet filter comprising a screw plug having a screw head engageable with a tool for rotating the screw head and a screw rod, the screw rod having a diameter less than that of the screw head and extending from a bottom surface of the screw head and a top surface of the screw head having a recess therein; and means for contacting oil containing iron powder and for retaining iron powder thereon comprising a permanent magnet piece fitted in the recess of the screw head; and a wall of an oil reservoir, the wall having a threaded hole therein and the screw rod being threadedly engaged with the threaded hole such that the screw head is located within the oil reservoir and the magnet filter is removably mounted in the oil reservoir.
2. The combination of claim 1, wherein the threaded hole extends into but not through the wall of the reservoir.
3. The combination of claim 1, wherein the threaded hole extends completely through the wall of the reservoir.
4. The combination of claim 1, wherein the screw head has a hexagonal outer periphery, the recess is a cylindrical recess extending into the top surface of the screw head, and the permanent magnet piece has a cylindrical shape and is fitted in the recess.
5. The combination of claim 4, wherein the permanent magnet piece of cylindrical shape is fitted in the cylindrical recess with an annular space therebetween, and a non-magnetic metal ring is tightly fitted in the annular space.
6. The combination of claim 1, wherein the permanent magnet piece extends outwardly from the recess beyond the top surface of the screw head.
7. A magnet filter in combination with an oil reservoir, comprising:
a magnet filter comprising a screw plug having a screw head engageable with a tool for rotating the screw head and a screw rod, the screw rod having a diameter less than that of the screw head and extending from a bottom surface of the screw head and a top surface of the screw head and having a recess therein; and means for contacting oil containing iron powder and for retaining iron powder thereon comprising a permanent magnet piece fitted in the recess of the screw head;
a wall of an oil reservoir; and a bracket within the reservoir and attached to the wall, the bracket having a hole therein and the screw rod extending therethrough such that the screw head is located within the oil reservoir and the magnet filter is removably mounted in the oil reservoir.
a magnet filter comprising a screw plug having a screw head engageable with a tool for rotating the screw head and a screw rod, the screw rod having a diameter less than that of the screw head and extending from a bottom surface of the screw head and a top surface of the screw head and having a recess therein; and means for contacting oil containing iron powder and for retaining iron powder thereon comprising a permanent magnet piece fitted in the recess of the screw head;
a wall of an oil reservoir; and a bracket within the reservoir and attached to the wall, the bracket having a hole therein and the screw rod extending therethrough such that the screw head is located within the oil reservoir and the magnet filter is removably mounted in the oil reservoir.
8. The combination of claim 7, wherein the screw head has a hexagonal outer periphery, the recess is a cylindrical recess extending into the top surface of the screw head, and the permanent magnet piece has a cylindrical shape and is fitted in the recess.
9. The combination of claim 8, wherein the permanent magnet piece of cylindrical shape is fitted in the cylindrical recess with an annular space therebetween, and a non-magnetic metal ring is tightly fitted in the annular space.
10. The combination of claim 9, wherein the permanent magnet piece extends outwardly from the recess beyond the top surface of the screw head.
11. The combination of claim 7, wherein the permanent magnet piece extends outwardly from the recess beyond the top surface of the screw head.
12. A magnet filter in combination with an oil reservoir, comprising:
a magnet filter comprising a screw plug having a screw head and a screw rod, the screw rod having a diameter less than that of the screw head and extending from a bottom surface of the screw head and a top surface of the screw head having a recess therein, the screw rod having a bore in a free end thereof so as to be engageable with a rod spanner; and means for contacting oil containing iron powder and for retaining iron powder thereon comprising a permanent magnet piece fitted in the recess of the screw head; and a wall of an oil reservoir, said wall having a threaded hole therethrough and the screw rod being threadedly engaged with the threaded hole such that the screw head is located within the oil reservoir and the magnet filter is removable mounted in the oil reservoir.
a magnet filter comprising a screw plug having a screw head and a screw rod, the screw rod having a diameter less than that of the screw head and extending from a bottom surface of the screw head and a top surface of the screw head having a recess therein, the screw rod having a bore in a free end thereof so as to be engageable with a rod spanner; and means for contacting oil containing iron powder and for retaining iron powder thereon comprising a permanent magnet piece fitted in the recess of the screw head; and a wall of an oil reservoir, said wall having a threaded hole therethrough and the screw rod being threadedly engaged with the threaded hole such that the screw head is located within the oil reservoir and the magnet filter is removable mounted in the oil reservoir.
13. The combination of claim 12, wherein the permanent magnet piece extends outwardly from the recess beyond the top surface of the screw head.
14. The combination of claim 12, wherein the cross-sectional shape of the screw head is round.
15. The combination of claim 12, wherein the cross-section of the bore in the free end of the screw rod is hexagonal.
16. A magnet filter in combination with an oil reservoir, comprising:
a magnet filter comprising a screw plug having a screw head engageable with a tool for rotating the screw head and a screw rod, the screw rod having a diameter less than that of the screw head and extending from a bottom surface of the screw head and a top surface of the screw head having a recess therein; and means for contacting oil containing iron powder and for retaining iron powder thereon comprising a permanent magnet piece fitted in the recess of the screw head; and a wall of an oil reservoir, the wall having a hole therethrough, the screw rod extending through the wall and means for removably securing the magnet filter to the wall such that the screw head is located within the oil reservoir and the magnet filter is removably mounted in the oil reservoir.
a magnet filter comprising a screw plug having a screw head engageable with a tool for rotating the screw head and a screw rod, the screw rod having a diameter less than that of the screw head and extending from a bottom surface of the screw head and a top surface of the screw head having a recess therein; and means for contacting oil containing iron powder and for retaining iron powder thereon comprising a permanent magnet piece fitted in the recess of the screw head; and a wall of an oil reservoir, the wall having a hole therethrough, the screw rod extending through the wall and means for removably securing the magnet filter to the wall such that the screw head is located within the oil reservoir and the magnet filter is removably mounted in the oil reservoir.
17. The combination of claim 16, wherein the screw head has a hexagonal outer periphery, the recess is a cylindrical recess extending into the top surface of the screw head, and the permanent magnet piece has a cylindrical shape and is fitted in the recess.
18. The combination of claim 17, wherein the permanent magnet piece of cylindrical shape is fitted in the cylindrical recess with an annular space therebetween, and a non-magnetic metal ring is tightly fitted in the annular space.
19. The combination of claim 16, wherein the permanent magnet piece extends outwardly from the recess beyond the top surface of the screw head.
20. The combination of claim 16, wherein the means for removably securing the magnet filter to the wall comprises a threaded nut in threaded engagement with the threaded rod with the wall between the nut and the screw head.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61-131290 | 1986-08-29 | ||
| JP1986131290U JPS6339442U (en) | 1986-08-29 | 1986-08-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1286231C true CA1286231C (en) | 1991-07-16 |
Family
ID=15054502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000526762A Expired - Lifetime CA1286231C (en) | 1986-08-29 | 1987-01-06 | Magnet filter |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4851116A (en) |
| JP (1) | JPS6339442U (en) |
| CA (1) | CA1286231C (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3466212B2 (en) * | 1991-09-17 | 2003-11-10 | インテル・コーポレーション | Computer system |
| US5420557A (en) * | 1992-04-07 | 1995-05-30 | Chern; Yih-Jyh | Magnetic drain plug |
| US5282963A (en) * | 1992-10-13 | 1994-02-01 | Hull Harold L | Magnetically attached magnet for oil filters |
| US5969903A (en) * | 1995-02-13 | 1999-10-19 | Seagate Technology, Inc. | Magnetic particle trap for hydrodynamic bearing |
| US5956204A (en) * | 1995-02-13 | 1999-09-21 | Seagate Technology, Inc. | Magnetic disc drive having magnetic particle trap for hydrodynamic bearing |
| US5647993A (en) * | 1995-08-14 | 1997-07-15 | Karp; David P. | Magnetic filter enhancement apparatus and method |
| US5564526A (en) * | 1995-08-21 | 1996-10-15 | Barnard; Charles E. | Magnetic drain plug |
| US6055126A (en) | 1998-07-06 | 2000-04-25 | Seagate Technology, Inc. | Disc drive having hydrodynamic labyrinth seal and magnet shield |
| US6558541B1 (en) | 2000-10-12 | 2003-05-06 | Av Lubricants, Inc. | Contaminant capture device and method for use |
| US6676227B1 (en) * | 2000-10-18 | 2004-01-13 | Meritor Heavy Vehicle Technology, Llc | Metallic debris extractor |
| US7357225B2 (en) * | 2004-08-05 | 2008-04-15 | Dorian George P | Two part oil or fluid drain plug with magnet |
| US7329342B2 (en) * | 2004-11-15 | 2008-02-12 | Faria Manuel S | Metallic particle trap bypass filter |
| DE102010015677A1 (en) * | 2010-04-21 | 2011-10-27 | Bayerische Motoren Werke Aktiengesellschaft | Oil filter means |
| DE102014109303A1 (en) * | 2014-07-03 | 2016-01-07 | Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh | Waste oil treatment facility for a circular knitting machine |
| US9957859B2 (en) | 2016-07-08 | 2018-05-01 | Ronald Cohen | Magnetic drain plug |
| US10555427B2 (en) * | 2017-11-08 | 2020-02-04 | Microsoft Technology Licensing, Llc | Electronic device with a magnetically attached electronic component |
| CN108253122A (en) * | 2018-02-05 | 2018-07-06 | 天津五机电设备有限公司 | Open filter built in oil sump |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA562887A (en) * | 1958-09-09 | Spodig Heinrich | Permanent magnet systems | |
| US1944208A (en) * | 1932-02-20 | 1934-01-23 | Lisle Corp | Magnetic plug |
| US2613246A (en) * | 1948-10-01 | 1952-10-07 | Spodig Heinrich | Magnetic system |
| US2698090A (en) * | 1951-06-11 | 1954-12-28 | Timken Roller Bearing Co | Mounting means for magnetic plugs |
| US2704156A (en) * | 1953-03-03 | 1955-03-15 | Dietrich W Botstiber | Self-closing magnetic drain unit |
| FR1079142A (en) * | 1953-04-09 | 1954-11-25 | Thermo Mecanique | Improvements made to forced circulation tubular generators |
| US2936890A (en) * | 1957-05-16 | 1960-05-17 | Dietrich W Botstiber | Magnetic chip detector |
| US2964190A (en) * | 1958-03-10 | 1960-12-13 | George T Smith | Magnetic trap for engine cooling system |
| GB861078A (en) * | 1959-01-17 | 1961-02-15 | William Morrison Culbert | Magnetic oil cleaner for engine sumps |
| US3151703A (en) * | 1962-01-02 | 1964-10-06 | Gen Motors Corp | Transmission |
| US3462720A (en) * | 1967-02-14 | 1969-08-19 | Saburo Miyata | Magnetic assembly for filtering |
| US3753183A (en) * | 1972-06-21 | 1973-08-14 | Sperry Rand Corp | Method of forming a magnetized helical coil |
| US4254393A (en) * | 1979-07-23 | 1981-03-03 | Robinson T Garrett | Treatment of fuel |
| JPS617796A (en) * | 1984-06-21 | 1986-01-14 | Matsushita Electric Ind Co Ltd | Speaker |
| JPS617797A (en) * | 1984-06-22 | 1986-01-14 | Toshiba Corp | Ceramic diaphragm speaker |
| JPH0236603Y2 (en) * | 1987-04-10 | 1990-10-04 |
-
1986
- 1986-08-29 JP JP1986131290U patent/JPS6339442U/ja active Pending
-
1987
- 1987-01-06 CA CA000526762A patent/CA1286231C/en not_active Expired - Lifetime
- 1987-01-07 US US07/001,729 patent/US4851116A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6339442U (en) | 1988-03-14 |
| US4851116A (en) | 1989-07-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |