CA1312102C - Quick-disconnect hose - Google Patents
Quick-disconnect hoseInfo
- Publication number
- CA1312102C CA1312102C CA000564520A CA564520A CA1312102C CA 1312102 C CA1312102 C CA 1312102C CA 000564520 A CA000564520 A CA 000564520A CA 564520 A CA564520 A CA 564520A CA 1312102 C CA1312102 C CA 1312102C
- Authority
- CA
- Canada
- Prior art keywords
- wall
- ply
- quick
- end region
- male fitting
- 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
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/02—Couplings of the quick-acting type in which the connection is maintained only by friction of the parts being joined
- F16L37/04—Couplings of the quick-acting type in which the connection is maintained only by friction of the parts being joined with an elastic outer part pressing against an inner part by reason of its elasticity
Abstract
QUICK-DISCONNECT HOSE
ABSTRACT OF THE DISCLOSURE
A quick-disconnect hose adapted to be coupled with a cylindrical male fitting having an outer annular bead. The hose comprises a flexible tubular wall with a female coupling element at an end region of the wall adapted to be received over the male fitting. The cou-pling element comprises an inner ply lining the wall at the end region, an outer ply girdling the wall at the end region, and hoop means interposed between the wall at the end region and one of the inner and outer plies. The inner ply is formed with an annular groove adapted to receive the annular bead of a male fitting in coupling relation therewithin. The hoop means is dis-posed axially outwardly of the annular groove and resists axial passage of the annular bead of the male fitting to and from the coupling relation within the groove.
ABSTRACT OF THE DISCLOSURE
A quick-disconnect hose adapted to be coupled with a cylindrical male fitting having an outer annular bead. The hose comprises a flexible tubular wall with a female coupling element at an end region of the wall adapted to be received over the male fitting. The cou-pling element comprises an inner ply lining the wall at the end region, an outer ply girdling the wall at the end region, and hoop means interposed between the wall at the end region and one of the inner and outer plies. The inner ply is formed with an annular groove adapted to receive the annular bead of a male fitting in coupling relation therewithin. The hoop means is dis-posed axially outwardly of the annular groove and resists axial passage of the annular bead of the male fitting to and from the coupling relation within the groove.
Description
This invention relates to quick-disconnect hoses, and more particularly, to quick-disconnect hoses for conveying gaseous substances at low pressures.
Quick-disconnect hoses in accordance with the invention are especially useful as air ducts in the ventilation and air-conditioning systems of vehicles such as air-craft.
Lightweight hoses of highly Elexible construc-tion are widely used in alrcraft to interconnect ele-ments of ventilation and air-conditioning systems.
~hese hoses are adapted to be coupled with rigid male fittings of hollow cylindrical construction which are formed with an outer circular boss or annular bead. A
widely employed class of such fittings are commonly referred to as "MS fittings" because they are identified by a code which consists of the letters MS (military standard) followed by a number which indicates dimen-sions. An end region of the hose is formed with an internal annular groove of a configuration and location to receive the annular bead of the male fitting in cou-pling relation therewithin. Heretofore a circular clamp, or circular spring, usually formed of metal wire, was tightly secured around the hose axially outwardly of the annular bead of the metal fitting to prevent the bead from being dislodged from the annular groove of the hose, thereby to preclude blowoff of the hose or other-wise inadvertent uncoupling of the hose and the metal Eitting.
Although a clamp applied in this manner pro-vides a secure coupling, a tool is normally required for applying the clamp, and initial installation of the system is thereby slowed. The use of clamps give rise to another problem, however, as follows.
Many modern transport aircraft, both military and commercial, are so designed that interior spaces may be converted from one use to another and back again with relative ease. Thus, the entire aircraft, or one or , 1 more portions of its interior, can be used alternately for passengers and cargo, or interior compartments can be converted back and forth between so-called coach or tourist seating and first-class appointments. In keeping with this flexibility, the ventilation and air-conditioning systems in the convertible spaces are designed to be rearranged to accommodate each part cular use of the space. Such rearrangement necessarily means uncoupling and recoupling the hoses used to interconnect elements of the system. In these circumstances, the use of clamps becomes a substantial obstacle to speed and efficiency. The present invention permits the clamp to be omitted and the hoses to be coupled with and uncou-pled from MS fittings with much greater speed and ease. It should be apparent that the expression "quick-disconnect hose" is an abbreviated designation, the hose according to the invention being a "quick-connect hose"
as well.
In order to provide the quick-connect/quick-disconnect advantages of the invention and yet maintain a secure coupling, the present hose is provided with a multi-ply female coupling element adapted to be received over the male fitting. ~ulti-ply coupling elements are not novel in themselves. ~n example of a prior multi--ply hose coupling structure is disclosed in U.S. Patent 4,148,342, issued April lO, 1979, to J. A. ~elsby. This prior structure is shown as interconnecting two rigid male hose fittings having bores of different sizes.
Being intended for hard usage and great stresses, the prior structure i5 formed with a number of plies, all of which extend continuously from end to end of the struc-ture, the innermost ply being formed with annular grooves to receive complementary annular ribs or beads provided on the male fittings. The disclosure contem-plates use with hoses of large internal diameter, spe-cifically bores of lO to 30 inches.
In accordance wi~h the present invention, there is provided a quick-disconnect hose which comprises a ,~ ~
~3~ 1 ~ 2~
l flexible tubular wall, a ~emale coupling element being provided at an end region of the wall. The female coupling element is adapted to be received over a cylin-drical male fitting which is formed with an outer annular bead. The coupling element comprises an inner ply which lines the wall at the end region and is formed with an annular groove adapted to receive the bead of the male fitting in coupling relation therewithin. An outer ply girdles the wall at the end region. Hoop means are interposed between the wall and one of the outer and inner plies and are disposed axially outwardl~
of the annular groove. The inner and outer plies and the hoop means are formed of elastomeric material, the hoop means being adapted to resiliently resist radial expansion, whereby to resist axial passage of the bead of the male fitting to and from its coupling relation within the annular groove of the inner ply.
Preferabl~, the hoop means snugly encircles the inner ply and comprises at least two concentric bands, each of the bands being formed of woven fabric impreg-nated with elastomeric material and cut on the bias.
Other features, advantages and objects of the invention will be apparent from the ensuing description taken in conjunction with the accompanying drawings, in which:
FIG. l is a fragmentary view from the side, partially in longitudinal section, of a quick-disconnect hose representing one embodiment of the invention and shown in coupling relation with a male fitting; and FIG. 2 is a similar view of a male fitting and a quick-disconnect hose which represents an alternative embodiment of the invention.
Referring now in detail to the drawings, and particularly to FIG. l, there is shown a quick-disconnect hose 10 constructed in accordance with the present invention and coupled with a male fitting 12 which forms no part of the invention. The male fitting is formed of aluminum or another rigid material in 3 ~
1 hollow, cylindrical configuration. A circular boss or outer annular bead 14 is formed near an axially outer end 16 of the fitting.
Hose 10 comprises a flexible tubular wall 18 which, in the embodiment of FIG. 1, is formed of a single ply throughout the major portion of its length.
To resist pinching or kinking of wall 18, it may be reinforced by an internal, helically wound wire 20, preferably consisting of a nonmetallic substance such as nylon. The wire is flanked on either side by double cords 22 which are laid externally of the wall and which are also preferably formed of a nonmetallic material such as fiberglass.
The helically wound wire and cords terminate in an end region 24 of wall 18, well short of the corre-sponding end 25 of hose 10. As an alternative to the helically wound wire 20 and cords 22, wall 18 may be accordian-pleated except in end region 24; that is, it may be formed with a continuous series of annular corru-gations.
Provided at end region 24 is a female coupling element 26 adapted to be received over fitting 12. The coupling element comprises an inner ply 28 lining wall 18 at the end region, an outer ply 30 girdling the wall at the end region, and hoop means 32 described with greater particularity hereinafter.
Inner ply 28 preferably comprises homogeneous elastomeric material and is formed with an annular groove 34 adapted to receive the annular bead 14 of fitting 12 in coupling relation therewithin, as shown.
Like wall 18, outer ply 30 is preferably formed of woven fabric impregnated with elastomeric material.
Thus, one effect of the outer ply, an effect augmented to some extent by the presence of inner ply 28, is to enhance the column strength of the hose at the end region 24; that is, it increases stiffness in the axial direction to resist buckling of coupling element 26 and any tendency of hose end 25 to turn under when the hose t 5 ~ ~ 2~2 1 is coupled with a male fitting. In addition, coupling elernent 26 is outwardly flared at its axially outer end portion 36 to facilitate reception of the male fitting upon coupling.
While hoop means 32 might with good effect be interposed between wall 18 and outer ply 32, it is pref-erably interposed between the wall and inner ply 28, snugly encircling the latter, as shown. It will be noted that inner ply 28 and wall 18 are radially out-wardly displaced at corresponding annular portions 38 and 40, respectively, to form annular groove 34, hoop means 32 preferably being disposed adjacent and axially outwardly of these displaced annular portions.
In preferred embodiments of the invention, the hoop means co~prises at least two concentric, cotermi-nous bands, each of the bands being formed of woven fabric impregnated with elastomeric material and cut on the bias for optimum elasticity, whereby to resiliently resist radial expansion. Thus, in the disposition shown and described, the hoop means acts to resist axial passage of annular bead 12 to and from its coupling relation within annular groove 34 of inner ply 28.
The embodiment of the invention depicted in ~IG. 2 is identical with that shown in FIG. 1 except that tubular wall 18 comprises two plies, namely an external ply 18a and an internal ply 18b, the latter terminating in end region 24 at a location adjacent to and axially inwardly of displaced annular portions 38 and 40. The external ply, on the other hand, is continuous throughout the end region and the full length of the hose, whereby inner ply 28 of coupling element 26 spans the axially outer end portions of both the internal ply and the external ply of the wall. It will be recogni~ed that wall 18 of the hose may be made up of any number of plies and remain within the purview of the invention.
The preferred metXod of manufacture begins with a mandrel (not shown) duplicating the cylindrical con--6~
1 figuration of male fitting 12, but extending throughout the length of the hose, and formed with an annular rib of precisely the configuration and dimensions of annular bead 14 of the male fittinq and so located as to form annular groove 34 in inner ply 28. It should be noted that the end region (not shown) of hose 10 opposite end region 24 may be formed with a female coupling element as well, and the mandrel employed will be configured accordingly.
Inner ply 23 is cut from an uncured sheet of homogeneous elastomeric material. All other plies, including those which make up wall 18, are cut from sheets consisting of woven fabric impregnated with uncured elastomeric material. The latter is preferably a silicone rubber in each case, whereas the fabric is preferably woven from glass fiber.
The various plies, wires and cords are laid about the mandrel in succession from innermost to outer-most, as will be obvious from the drawings. When the last of these, namely outer ply 30, has been so laid, the entire structure is tightly wrapped with nylon tape. It is then placed in an oven to cure at 350F for 10 to 30 minutes, whereupon the mandrel and nylon tape are removed and the hose is post-cured in the oven at 350F for 45 minutes to 4 hours to be sure any remaining volatiles and catalysts are no longer present in the material.
The internal diameter of a hose so constructed will be in the range of 0.5 inches to 3.5 inches, though optimum performance appears to be achieved with internal diameters at or above 1.25 inches. Similarly, hose lengths of 240.0 inches or less are preferred.
Materials may be selected to provide acceptable performance in temperatures of -65~ to 300F. If the hose is to be used in ventilation or air-conditioning systems, it should not blow off the male fitting at static pressures below 10 inches of water.
o ~ 3 ~
1 While the invention has been described in con-nection with specific embodiments thereof, it will be understood that this is by way of illustration and not of limitation, and that the scope of the appended claims should be construed as broadly as the prior art will permit.
Quick-disconnect hoses in accordance with the invention are especially useful as air ducts in the ventilation and air-conditioning systems of vehicles such as air-craft.
Lightweight hoses of highly Elexible construc-tion are widely used in alrcraft to interconnect ele-ments of ventilation and air-conditioning systems.
~hese hoses are adapted to be coupled with rigid male fittings of hollow cylindrical construction which are formed with an outer circular boss or annular bead. A
widely employed class of such fittings are commonly referred to as "MS fittings" because they are identified by a code which consists of the letters MS (military standard) followed by a number which indicates dimen-sions. An end region of the hose is formed with an internal annular groove of a configuration and location to receive the annular bead of the male fitting in cou-pling relation therewithin. Heretofore a circular clamp, or circular spring, usually formed of metal wire, was tightly secured around the hose axially outwardly of the annular bead of the metal fitting to prevent the bead from being dislodged from the annular groove of the hose, thereby to preclude blowoff of the hose or other-wise inadvertent uncoupling of the hose and the metal Eitting.
Although a clamp applied in this manner pro-vides a secure coupling, a tool is normally required for applying the clamp, and initial installation of the system is thereby slowed. The use of clamps give rise to another problem, however, as follows.
Many modern transport aircraft, both military and commercial, are so designed that interior spaces may be converted from one use to another and back again with relative ease. Thus, the entire aircraft, or one or , 1 more portions of its interior, can be used alternately for passengers and cargo, or interior compartments can be converted back and forth between so-called coach or tourist seating and first-class appointments. In keeping with this flexibility, the ventilation and air-conditioning systems in the convertible spaces are designed to be rearranged to accommodate each part cular use of the space. Such rearrangement necessarily means uncoupling and recoupling the hoses used to interconnect elements of the system. In these circumstances, the use of clamps becomes a substantial obstacle to speed and efficiency. The present invention permits the clamp to be omitted and the hoses to be coupled with and uncou-pled from MS fittings with much greater speed and ease. It should be apparent that the expression "quick-disconnect hose" is an abbreviated designation, the hose according to the invention being a "quick-connect hose"
as well.
In order to provide the quick-connect/quick-disconnect advantages of the invention and yet maintain a secure coupling, the present hose is provided with a multi-ply female coupling element adapted to be received over the male fitting. ~ulti-ply coupling elements are not novel in themselves. ~n example of a prior multi--ply hose coupling structure is disclosed in U.S. Patent 4,148,342, issued April lO, 1979, to J. A. ~elsby. This prior structure is shown as interconnecting two rigid male hose fittings having bores of different sizes.
Being intended for hard usage and great stresses, the prior structure i5 formed with a number of plies, all of which extend continuously from end to end of the struc-ture, the innermost ply being formed with annular grooves to receive complementary annular ribs or beads provided on the male fittings. The disclosure contem-plates use with hoses of large internal diameter, spe-cifically bores of lO to 30 inches.
In accordance wi~h the present invention, there is provided a quick-disconnect hose which comprises a ,~ ~
~3~ 1 ~ 2~
l flexible tubular wall, a ~emale coupling element being provided at an end region of the wall. The female coupling element is adapted to be received over a cylin-drical male fitting which is formed with an outer annular bead. The coupling element comprises an inner ply which lines the wall at the end region and is formed with an annular groove adapted to receive the bead of the male fitting in coupling relation therewithin. An outer ply girdles the wall at the end region. Hoop means are interposed between the wall and one of the outer and inner plies and are disposed axially outwardl~
of the annular groove. The inner and outer plies and the hoop means are formed of elastomeric material, the hoop means being adapted to resiliently resist radial expansion, whereby to resist axial passage of the bead of the male fitting to and from its coupling relation within the annular groove of the inner ply.
Preferabl~, the hoop means snugly encircles the inner ply and comprises at least two concentric bands, each of the bands being formed of woven fabric impreg-nated with elastomeric material and cut on the bias.
Other features, advantages and objects of the invention will be apparent from the ensuing description taken in conjunction with the accompanying drawings, in which:
FIG. l is a fragmentary view from the side, partially in longitudinal section, of a quick-disconnect hose representing one embodiment of the invention and shown in coupling relation with a male fitting; and FIG. 2 is a similar view of a male fitting and a quick-disconnect hose which represents an alternative embodiment of the invention.
Referring now in detail to the drawings, and particularly to FIG. l, there is shown a quick-disconnect hose 10 constructed in accordance with the present invention and coupled with a male fitting 12 which forms no part of the invention. The male fitting is formed of aluminum or another rigid material in 3 ~
1 hollow, cylindrical configuration. A circular boss or outer annular bead 14 is formed near an axially outer end 16 of the fitting.
Hose 10 comprises a flexible tubular wall 18 which, in the embodiment of FIG. 1, is formed of a single ply throughout the major portion of its length.
To resist pinching or kinking of wall 18, it may be reinforced by an internal, helically wound wire 20, preferably consisting of a nonmetallic substance such as nylon. The wire is flanked on either side by double cords 22 which are laid externally of the wall and which are also preferably formed of a nonmetallic material such as fiberglass.
The helically wound wire and cords terminate in an end region 24 of wall 18, well short of the corre-sponding end 25 of hose 10. As an alternative to the helically wound wire 20 and cords 22, wall 18 may be accordian-pleated except in end region 24; that is, it may be formed with a continuous series of annular corru-gations.
Provided at end region 24 is a female coupling element 26 adapted to be received over fitting 12. The coupling element comprises an inner ply 28 lining wall 18 at the end region, an outer ply 30 girdling the wall at the end region, and hoop means 32 described with greater particularity hereinafter.
Inner ply 28 preferably comprises homogeneous elastomeric material and is formed with an annular groove 34 adapted to receive the annular bead 14 of fitting 12 in coupling relation therewithin, as shown.
Like wall 18, outer ply 30 is preferably formed of woven fabric impregnated with elastomeric material.
Thus, one effect of the outer ply, an effect augmented to some extent by the presence of inner ply 28, is to enhance the column strength of the hose at the end region 24; that is, it increases stiffness in the axial direction to resist buckling of coupling element 26 and any tendency of hose end 25 to turn under when the hose t 5 ~ ~ 2~2 1 is coupled with a male fitting. In addition, coupling elernent 26 is outwardly flared at its axially outer end portion 36 to facilitate reception of the male fitting upon coupling.
While hoop means 32 might with good effect be interposed between wall 18 and outer ply 32, it is pref-erably interposed between the wall and inner ply 28, snugly encircling the latter, as shown. It will be noted that inner ply 28 and wall 18 are radially out-wardly displaced at corresponding annular portions 38 and 40, respectively, to form annular groove 34, hoop means 32 preferably being disposed adjacent and axially outwardly of these displaced annular portions.
In preferred embodiments of the invention, the hoop means co~prises at least two concentric, cotermi-nous bands, each of the bands being formed of woven fabric impregnated with elastomeric material and cut on the bias for optimum elasticity, whereby to resiliently resist radial expansion. Thus, in the disposition shown and described, the hoop means acts to resist axial passage of annular bead 12 to and from its coupling relation within annular groove 34 of inner ply 28.
The embodiment of the invention depicted in ~IG. 2 is identical with that shown in FIG. 1 except that tubular wall 18 comprises two plies, namely an external ply 18a and an internal ply 18b, the latter terminating in end region 24 at a location adjacent to and axially inwardly of displaced annular portions 38 and 40. The external ply, on the other hand, is continuous throughout the end region and the full length of the hose, whereby inner ply 28 of coupling element 26 spans the axially outer end portions of both the internal ply and the external ply of the wall. It will be recogni~ed that wall 18 of the hose may be made up of any number of plies and remain within the purview of the invention.
The preferred metXod of manufacture begins with a mandrel (not shown) duplicating the cylindrical con--6~
1 figuration of male fitting 12, but extending throughout the length of the hose, and formed with an annular rib of precisely the configuration and dimensions of annular bead 14 of the male fittinq and so located as to form annular groove 34 in inner ply 28. It should be noted that the end region (not shown) of hose 10 opposite end region 24 may be formed with a female coupling element as well, and the mandrel employed will be configured accordingly.
Inner ply 23 is cut from an uncured sheet of homogeneous elastomeric material. All other plies, including those which make up wall 18, are cut from sheets consisting of woven fabric impregnated with uncured elastomeric material. The latter is preferably a silicone rubber in each case, whereas the fabric is preferably woven from glass fiber.
The various plies, wires and cords are laid about the mandrel in succession from innermost to outer-most, as will be obvious from the drawings. When the last of these, namely outer ply 30, has been so laid, the entire structure is tightly wrapped with nylon tape. It is then placed in an oven to cure at 350F for 10 to 30 minutes, whereupon the mandrel and nylon tape are removed and the hose is post-cured in the oven at 350F for 45 minutes to 4 hours to be sure any remaining volatiles and catalysts are no longer present in the material.
The internal diameter of a hose so constructed will be in the range of 0.5 inches to 3.5 inches, though optimum performance appears to be achieved with internal diameters at or above 1.25 inches. Similarly, hose lengths of 240.0 inches or less are preferred.
Materials may be selected to provide acceptable performance in temperatures of -65~ to 300F. If the hose is to be used in ventilation or air-conditioning systems, it should not blow off the male fitting at static pressures below 10 inches of water.
o ~ 3 ~
1 While the invention has been described in con-nection with specific embodiments thereof, it will be understood that this is by way of illustration and not of limitation, and that the scope of the appended claims should be construed as broadly as the prior art will permit.
Claims (11)
1. A quick-disconnect hose adapted to be coupled with a cylindrical male fitting having an outer annular bead, the hose comprising a flexible tubular wall, a female coupling element at an end region of the wall adapted to be received over the male fitting, the coupling element comprising an inner ply lining the wall at the end region and formed with an annular groove adapted to receive the annular bead of a male fitting in coupling relation therewithin, an outer ply girdling the wall at the end region, and hoop means interposed between the wall at the end region and one of the inner and outer plies and disposed axially outwardly of the annular groove, the inner and outer plies and the hoop means comprising elastomeric material, the hoop means being adapted to resiliently resist radial expansion thereof, whereby to resist axial passage of the annular bead of a male fitting to and from said coupling rela-tion within the annular groove.
2. A quick-disconnect hose according to claim 1, wherein the inner ply and the wall are radially outwardly displaced at corresponding annular portions thereof to form the annular groove in the inner ply, the hoop means being disposed adjacent to and axially out-wardly of the displaced annular portions.
3. A quick-disconnect hose according to claim 1, wherein the inner ply comprises substantially homogeneous elastomeric material, and each of the inner and outer plies and the wall comprises woven fabric impregnated with elastomeric material.
4. A quick-disconnect hose according to claim 1, wherein the wall comprises a plurality of plies.
5. A quick-disconnect hose according to claim 4, wherein each of the plurality of plies of the wall comprises woven fabric impregnated with elastomeric material.
6. A quick-disconnect hose according to claim 2, wherein the tubular wall comprises an external ply and an internal ply, the internal ply terminating in the end region at a location adjacent to and axially inwardly of the displaced annular portions, the external ply being continuous throughout the end region, whereby the inner ply of the coupling element spans the axially outer end portions of the internal ply and external ply of the wall.
7. A quick-disconnect hose according to claim 1, wherein the hoop means is interposed between the inner ply and the wall.
8. A quick-disconnect hose according to claim 1, wherein the hoop means comprises an inner band encircling the inner ply, and an outer band axially coterminous with the inner band and interposed between the inner band and the tubular wall.
9. A quick-disconnect hose according to claim 7, wherein each of the inner and outer bands com-prises a woven fabric impregnated with elastomeric material and cut on the bias.
10. A quick-disconnect hose according to claim 1, wherein the axially outer end portion of the female coupling element is outwardly flared to facili-tate reception of a male coupling member.
11. A quick-disconnect hose adapted to be coupled with a cylindrical male fitting having an outer annular bead, the hose being formed of elastomeric material and comprising a flexible tubular wall, a female coupling element at an end region of the wall adapted to be received over the male fitting, the cou-pling element comprising an inner ply lining the wall at the end region, the inner ply and the wall being radi-ally displaced at corresponding annular portions thereof to form an annular groove in the inner ply adapted to receive the annular bead of a male fitting in coupling relation within the groove, an outer ply girdling the wall at the end region, and hoop means interposed between the inner ply and the wall at the end region and disposed adjacent to and axially outwardly of the dis-placed annular portions, the hoop means tightly encir-cling the inner ply and comprising at least two concen-tric bands, each of the bands being formed of woven fabric impregnated with elastomeric material and cut on the bias, whereby to resiliently resist axial passage of the annular bead of a male fitting to and from said coupling relation within the annular groove.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/114,556 US4768563A (en) | 1987-10-29 | 1987-10-29 | Quick-disconnect hose |
| US114,556 | 1987-10-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1312102C true CA1312102C (en) | 1992-12-29 |
Family
ID=22355980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000564520A Expired - Lifetime CA1312102C (en) | 1987-10-29 | 1988-04-19 | Quick-disconnect hose |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4768563A (en) |
| CA (1) | CA1312102C (en) |
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| IT219178Z2 (en) * | 1989-12-20 | 1992-12-17 | F.I.S.T. S.P.A. | FLEXIBLE CONDUCT FOR CIRCUITS OF CIRCULATION OF THE COOLANT LIQUID OF A VEHICLE ENGINE. |
| DE4239909C1 (en) * | 1992-11-27 | 1994-05-05 | Rasmussen Gmbh | Tubular plastic connector for flexible lines - comprises fibre reinforced first part with low creep, injected onto unreinforced second part |
| DE4436646C1 (en) * | 1994-10-14 | 1995-12-21 | Heraeus Quarzglas | Connector for quartz glass epitaxy bells |
| US6216492B1 (en) | 1994-10-14 | 2001-04-17 | Heraeus Quarzglas Gmbh | Methods and apparatus for providing quartz glass connectors |
| DE19547876A1 (en) * | 1995-12-21 | 1997-06-26 | Bosch Gmbh Robert | Fuel line for fuel delivery devices of motor vehicles |
| BR9707458A (en) * | 1996-01-03 | 1999-07-20 | Flexfab Horizons Int Inc | Light conduit combination of a light conduit and a connector and light conduit forming process |
| US20060165320A1 (en) * | 2003-01-02 | 2006-07-27 | Stephens Thomas C | Inlet port for a container made of geotextiles |
| EP1748748B1 (en) * | 2004-05-28 | 2012-10-31 | Össur hf | Prosthetic or orthotic sleeve having external surface peripheral profiles |
| US8088117B2 (en) * | 2005-10-25 | 2012-01-03 | Nicolon Corporation | Fill port for a flexible container for relieving or distributing stresses at the fill port |
| CN102635744B (en) * | 2006-05-12 | 2016-01-06 | Bfm技术有限公司 | Pipe and rigid tubular sleeve pipe |
| US7878550B2 (en) * | 2006-06-30 | 2011-02-01 | The Boeing Company | Apparatus, system, and method for joining and sealing conduits |
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| US1525538A (en) * | 1924-08-09 | 1925-02-10 | Evans William Hooper | Fabric-hose coupling |
| US1970513A (en) * | 1933-08-02 | 1934-08-14 | Boston Woven Hose & Rubber Co | Hose nipple connection |
| US2703109A (en) * | 1951-08-25 | 1955-03-01 | Gen Dynamics Corp | Duct construction |
| US2683466A (en) * | 1952-02-14 | 1954-07-13 | Flexible Tubing Corp | Cuff for flexible tubing |
| DE1045745B (en) * | 1954-06-28 | 1958-12-04 | Pneumatiques & Caoutchouc Manu | Hose socket |
| US2917102A (en) * | 1955-02-25 | 1959-12-15 | Us Rubber Co | Method of making hose with sealing rings attached at each end |
| US2813272A (en) * | 1955-04-20 | 1957-11-19 | Eugene T Hagan | Detachable fluid-tight joint for protective clothing |
| US2911237A (en) * | 1956-09-25 | 1959-11-03 | Carlisle Corp | Coupling for resilient tubular members |
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-
1987
- 1987-10-29 US US07/114,556 patent/US4768563A/en not_active Expired - Lifetime
-
1988
- 1988-04-19 CA CA000564520A patent/CA1312102C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US4768563A (en) | 1988-09-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |