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Publication numberUS3320385 A
Publication typeGrant
Publication dateMay 16, 1967
Filing dateJul 28, 1965
Priority dateJul 28, 1965
Publication numberUS 3320385 A, US 3320385A, US-A-3320385, US3320385 A, US3320385A
InventorsSherwood Henry A
Original AssigneeU S Servicator Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electrical connector for tapping power from an insulation covered conductor
US 3320385 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

m May M, 1%? M. A. SHERWUOE) ELECTRICAL CONNECTOR FOR TAPPING POWFIH FROM AN INSULATION COVERED CONDUCTOR Filed July 28, 1965 W Z f T NE E .N...

m m y m mm United States Patent 3,320,385 ELECTRICAL CONNECTOR FOR TAPPING POWER $160M AN INSULATION COVERED CONDUC- R Henry A. Sherwood, Short Hills, N.J., assignor to US. Servicator Corporation, Clifton, N.J., a corporation of Delaware Filed July 28, 1965, Ser. No. 475,443 Claims. (Cl. 200-129) The instant invention relates to electrical connectors in general and more particularly to connectors of this type having an automatic splicing means for making electrical connection to an insulation covered electrical conductor at a point remote from the ends thereof.

Today there are many accessory devices available for installation on a vehicle or machine after the latter has left the factory. A great number of these accessories are electrically operated and as a result must be connected to the electrical system of the vehicle or machine in question. It often happens that a convenient mounting position for the accessory is remote from electrical terminal points of the vehicle or machine and in some cases even when the terminal points are in reasonably close proximity a special adapter is required for making connection thereto.

Practice has shown that the installer of such accessories as often as not finds it more convenient to break into an electrical line at a point remote from the ends thereof rather than to run a line to a terminal point. Heretofore this has required the stripping of insulation from the conductor in question, the making of an electrical connection thereto and then taping the joint to provide insulation. The foregoing procedures are often inconvenient to perform in that the line being taped is often in a limited space. As a result the procedure is overly time consuming and the quality of the splice is questionable as to contact resistance and insulation quality.

Accordingly, a primary object of this invention is to provide a novel automatic splicing means for making electrical connection to a conductor at a point remote from the ends thereof.

Another object is to provide an automatic splicing device which is simple to operate and of relatively inexpensive construction yet can be quickly attached to an electrical conductor to provide a high quality electrical connection that is mechanically strong.

Still another object is to provide a novel fused automatic splicing device.

These as well as other objects of this invention will become readily apparentafter reading the following description of the accompanying drawings in which:

" FIGURE 1 is a schematic illustrating the manner in which an accessory is electrically connected to the electrical system of an automobile by utilizing a fused automatic splicing means constructed in accordance with the teachings of the instant invention.

FIGURE 2 is an exploded perspective of the fused automatic splicing means.

FIGURES 3 and 4 are longitudinal cross sections of the fused splicing means having the fuse removed with these cross sections being taken in planes disposed at right angles to one another.

Now referring to the figures and more particularly to the schematic of FIGURE 1. For purposes of illustration electrically operated accessory 11 (FIGURE 1) has been selected as one for an automobile and is connected to the battery thereof through the fused automatic splicer 20 of the instant invention and the key operated ignition lock 12 of the automobile in question.

Fused automatic splicer 20, as best seen in FIGURES 2 through 4, includes a three piece housing consisting of lower housing section 21, upper housing section 22 and cap 23 threadably mounted to the upper end of upper housing section 22. Housing sections 21 and 22 are hollow elongated generally cylindrical members, with lower housing section 21 having transverse partition 24 and upper housing section 22 having transverse strut 25 formed integrally therewith. The wall thickness of housing section 22 is reduced below external shoulder 26 with this reduced section having an outwardly extending annular protrusion 27 positioned close to, but spaced from shoulder 26. Lower housing section 21 is provided, near its upper end, with three angularly displaced inward projections 28 which cooperate with annular projection 27 to provide means for releasably securing housing sections 21, 22 to each other.

That is, housing sections 21, 22 are constructed of a relatively stiff resilient plastic material such as compression molded Bakelite. When housing section 21 is moved downwardly along the cylindrical axis relative to housing section 22 the engagement between protrusion 27, 28 causes deformation of lower housing section 21 sufficient to permit protrusions 28 to move below protrusion 27. In mounting housing section 21 to housing section 22 the reverse action takes place and as protrusions 28 move above protrusion 27, the former snap into the positions illustrated to lock members 21, 22 together.

Housing sections 21, 22 cooperate to define main chamber 31 in the region between partition 24 and strut 25. The region of housing section 21 below partition 24 defines a lower chamber 32 while the region of upper housing 22 above strut 25 defines upper chamber 33, the upper end of which is enclosed by cap 23. Lower terminal member 35, mounted to lower housing section 21, includes female type fuse terminal connector 36 disposed immediately above partition 24 and terminal plug 37 disposed below partition 24. Terminal member 35 is mounted by passing plug 37 downwardly through slot 38 in partition 24 until tangs 39 fall below the lower surface of partition 24. Since tangs 39 are resilient, they are initially forced toward one another but once they pass through aperture 38 they move apart to block upward movement of terminal member 35.

Upper terminal member 40 is mounted to upper housing section 22 and is secured thereto by member 50. Terminal member 40 includes female type fuse terminal connector 41 extending below strut 25. Fuse terminal 41 is bifurcated with the two sections thereof being on opposite sides of strut 25. The portion of member 40 above fuse terminal 41 includes upwardly extending knife-like projection 42 disposed centrally with respect to four other upwardly extending projections '43. As will be hereinafter explained, projection 42 is provided for the purpose of piercing the insulating covering 55 of accessories cable 59 to engage conductor 56 thereof so as to provide an electrical connection between conductor 56 and fuse terminal 41. Projections 43 are disposed adjacent the walls of upper housing section 22 defining the passage 57 disposed perpendicular to the cylindrical axis and extending straight through upper chamber 33.

Member 50 is an elongated element of generally U- shaped cross section having an elongated slot 51 in the web thereof. Piercing projection 42 extends upwardly through slot 51. Disposed at opposite ends of member 50 are four ears 52 which engage the walls defining through passage 57 and in so doing frictionally secure member 50 to upper housing section 22 and restrict upward movement of upper terminal member 40 so as to retain the latter in operative position.

Fuse 60 is normally disposed within main chamber 31 with the conducting ferrules 61, 62 at the ends of insulating tubular housing 63 being received by fuse terminals 36, 41 respectively. The end of insulated conductor 64 remote from accessory 11 is provided with a female type connector 65 which is insertable into lower chamber 31 for releaseable engagement with terminal plug 37. Cap 23 is provided with a centrally disposed inwardly extending post 23a which is positioned in alignment with piercing projection 42.

Fused automatic splicer 20 is utilized in the following manner. With cap 23 removed, accessories cable 59 is inserted into through passage 57. Then cap 23 is threaded on to the upper end of upper housing section 22 with radial wings 22a, extending outwardly from upper housing section 22, being hand held to prevent undue strain being placed on cable 59 as cap 23 is screwed into place. As cap 23 moves down the lower edge of downwardly extending threaded skirt portion 23b thereof engages insulation 55 moving it downwardly into engagement with or past the serrations 53 at the upper edges of the U-arms forming member 50. This positions a portions of conductor 56 directly over piercing projection 42. As the downward movement of cap 23 continues, post 23a thereof engages the portion of insulation 55 aligned with piercing projection 42 through insulation 55 into firm electrical contact with conductor 56. Although not illustrated, in the case of larger diameter cable, serrations 53 firmly engage the cable insulation to stabilize the cable in centered position over projection 42 while cap 23 is being screwed into position, and to form a good mechanical connection between splicer 20 and the cable.

Thus, this invention provides novel splicer for conveniently tapping power from an insulation covered wire at a point remote from both ends of the wire. While the splicer of the instant invention has been described as being a fused device it should now be apparent to those skilled in the art that splicer construction may be modified by eliminating the fuse while retaining the features for positioning the cable and piercing the insulation thereof to make electrical connection to the cable conductor.

Although there has been described a preferred embodiment of this novel invention many variations and modifications will now be aparent to those skilled in the art. Therefore, this invention is to be limited, not by the specific disclosure herein, but only by the appending claims.

The embodiments of the invention in which an exclusive privilege or property is claimed are defined as follows.

I claim:

1. Automatic splicing apparatus including housing means having a portion defining a chamber with a through passage for receiving an insulation covered conductor, electrical conducting means including a first section having a piercing means extending into said through passage, means securing said first section to said housing means, first means mounted to said housing and extending into said chamber, second means operable to move said first means toward said piercing means and in so doing cause piercing means to electrically engage an insulation covered wire positioned in and extending beyond both ends of said through passage; said portion including a threadably mounted cap to which said second means is mounted; third means having an aperture through which said piercing means extends; said third means disposed within said chamber and positioned to engage insulation covering of different sizes of wire to maintain such wire aligned with said piercing means as said first means moves toward said piercing means; said third means including spaced arms extending toward said cap with each of said arms having a free edge with multiple projections of varying height.

2. Automatic splicing apparatus including housing means having a portion defining a chamber with a through passage for receiving an insulation covered conductor, said portion including a cap and a part having second means threadably engaged with said cap, electrical conducting means including a first section having a piercing means extending into said through passage means securing said first section to said housing means, first means mounted to said cap and extending into said chamber, said second means operable to move said first means toward said piercing means and in so doing cause said piercing means to electrically engage an insulation covered conductor positioned in and extending beyond both ends of said through passage, said housing means including another portion defining another chamber, said conducting means also including a fuse disposed in said another chamber and having a first and a second terminal, said first section including a first terminal means in releasable engagement with said first terminal, said conducting means further including a second section including second terminal means in releasable engagement with said second terminal, an elongated member of generally U-shaped cross-section disposed in said passage, said member having an aperture in the web thereof, said piercing means extending through said aperture, said member having a plurality of protrusions along the free edges of each of its U-arms positioned for engagement with insulation covering a conductor extending through said passage without piercing this insulation and engaging a conductor covered thereby, said protrusions acting to maintain such conductor aligned with said piercing means as said cap is threaded on to said part.

3. Apparatus as set forth in claim 2 in which the protrusions of each of said U-arms are of varying height.

4. Automatic splicing apparatus including housing means having a portion defining a chamber with a through passage for receiving an insulation covered conductor, said portion including a cap and a part having second means threadably engaged with said cap, electrical conducting means including a first section having a piercing means extending into said through passage, first means mounted to said cap and extending into said chamber said second means operable to move said first means toward said piercing means and in so doing cause said piercing means to electrically engage an insulation covered conductor positioned in and extending beyond both ends of said through passage, said housing means including another portion defining another chamber, said conducting means also including a fuse disposed in said another chamber and having a first and a second terminal, said first section including a first terminal means in releasable engagement with said first terminal, said conducting means further including a second section including second terminal means in releasable engagement with said second terminal, said housing means further including a transverse partition separating said chamber and said another chamber, said first terminal means integrally formed with said piercing means, third means having an aperture through which said piercing means extends, said third means disposed Within said chamber and positioned to engage insulation covering of different sizes of wire to maintain such wire aligned with said piercing means as said first means moves toward said piercing means, said third means including retaining means frictionally engaging said housing means, said third means positioned to retain said first section of said electrical conducting means mounted to said housing means.

5. Automatic splicing apparatus including housing means having a portion defining a chamber with a through passage for receiving an insulation covered conductor, electrical conducting means including a first section having a piercing means extending into said through passage, first means mounted to said housing and extending into said chamber, second means operable to move said first means toward said piercing means and in so doing cause said piercing means to electrically engage an insulation covered wire positioned in and extending beyond both ends of said through passage; said portion including a threadably mounted cap to which said second means is mounted; third means having an aperture through which said piercing means extends; said third means disposed Within said chamber and positioned to engage insulation covering of different sizes of wire to maintain such Wire aligned with said piercing means as said first means moves toward said piercing means; said third means including retaining means frictionally engaging said housing means, said third means positioned to retain said first section of said electrical conducting means mounted to said housing means.

References Cited by the Examiner UNITED STATES PATENTS 1,369,874 3/1921 Ayotte 339--220 2,440,748 5/1948 Johnson 3 39-99 2,491,463 12/1949 Brooks 33999 6 2/1954 Gerlat ZOO-115.5 1/ 1955 Benander 33999 4/1958 Sundt 200129 8/1958 Spataro 33999 4/1963 Brown et al 200115.5 4/1963 Wright 200-166 2/1966 Louden et al. 200-129 FOREIGN PATENTS 4/ 1938 Australia. 9/ 1963 Great Britain.

BERNARD A. GILHEANY, Primary Examiner. H. B. GILSON, Assistant Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1369874 *Jul 9, 1919Mar 1, 1921Jules X RivardSpark-plug
US2440748 *May 1, 1947May 4, 1948Rca CorpLightning arrestor for television transmission lines, etc.
US2491463 *May 4, 1948Dec 13, 1949On A Lite CorpElectrical connector fixture
US2668885 *Nov 22, 1950Feb 9, 1954Gerlat Matthew EFused plug and multiple tap for electrical cords
US2700142 *Dec 26, 1951Jan 18, 1955Gen ElectricCord splicer
US2831087 *Oct 6, 1954Apr 15, 1958Sundt Engineering CompanyFuse post
US2848643 *May 26, 1955Aug 19, 1958Lucy SpataroElectric lamps
US3085138 *Aug 13, 1959Apr 9, 1963Elastic Stop Nut CorpElectrical connector
US3085139 *May 19, 1960Apr 9, 1963Guardian Electric Mfg CompanyPrinted circuit mounting means for switch blades
US3236974 *Nov 13, 1962Feb 22, 1966Superior Electric CoCombined binding post and fuse holder
AU103703B * Title not available
GB935793A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3453578 *Feb 10, 1967Jul 1, 1969Amp IncElectrical plug connector
US3860319 *Sep 13, 1973Jan 14, 1975Slater Thomas SBoxless electrical component
US4861279 *Oct 26, 1987Aug 29, 1989Corecon CorporationElectrical apparatus to be directly coupled to sheathed cable and to wall structures
US7686641 *Jun 20, 2008Mar 30, 2010Nexus, IncorporatedWire piercing electrical connector
US20090318011 *Dec 24, 2009Farahani Fereidoun AWire Piercing Electrical Connector
WO1983002531A1 *Jan 12, 1982Jul 21, 1983Derek HayesElectrical coupling device
WO1983002688A1 *Feb 2, 1982Aug 4, 1983Derek HayesElectrical coupling device
Classifications
U.S. Classification337/187, 439/411, 337/235
International ClassificationH01R4/24
Cooperative ClassificationH01R4/2408
European ClassificationH01R4/24A2