US2539628A - Solderless connector - Google Patents

Solderless connector Download PDF

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Publication number
US2539628A
US2539628A US727356A US72735647A US2539628A US 2539628 A US2539628 A US 2539628A US 727356 A US727356 A US 727356A US 72735647 A US72735647 A US 72735647A US 2539628 A US2539628 A US 2539628A
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United States
Prior art keywords
connector
body portion
side walls
cap
opening
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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
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US727356A
Inventor
Ralph H Kingdon
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Schneider Electric USA Inc
Original Assignee
Square D Co
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Priority to US727356A priority Critical patent/US2539628A/en
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Publication of US2539628A publication Critical patent/US2539628A/en
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Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
    • H01R4/40—Pivotable clamping member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/16—Fastening of connecting parts to base or case; Insulating connecting parts from base or case
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/39—Cord and rope holders
    • Y10T24/3958—Screw clamp
    • Y10T24/3967—Bolt perpendicular to cable axis

Definitions

  • This invention relates to a solderless connector for electric conductors in which electric cables are mechanically clamped in electrically conducting relation as distinguished from attachment by means of a solder lug.
  • An object of the invention is to provide a solderless connector which shall efiectively, mechanically and electrically connect an electric cable to a conducting part with the connector receiving the cable end from the top of the connector rather than through an end opening.
  • Another object of the invention is the provision of a solderless connector in which a cable end may be inserted from the top in which the top or cover of the connector is hingedly mounted on the body portion thereof so as to pivot into a non-interfering position.
  • Another object of the invention is the provision of a solderless connector in accordance with the preceding object in which the swinging top or cover has means interlocking with the body portion of the connector to normally retain the cover in place.
  • Another object of the invention is the provision of a solderless connector in accordance with the two immediately preceding objects in which the cover and opposite sides of the connector are threaded to receive a clamping screw adapted to clamp the electrical conductors against the bottom of the connector.
  • Figure l is a top plan view showing a solderless connector according to the present invention.
  • Figure 2 is a side elevational view of the connector.
  • Figure 3 is transverse sectional view on the line III-III of Figure 2.
  • Figure 4 is a longitudinal sectional view on the line IV-IV of Figure 3.
  • Figure 5 is an elevational view of the connector with the top cover swung into cable inserting position.
  • Figure 6 is a perspective view 01' one form of conducting strap with which the solderless connector may be associated.
  • the solderless connector as shown in the drawings,.is mounted upon an insulating base I and connects an electric circuit cable 2 to a conducting strap 3 which, as specifically shown, forms a terminal of a circuit interrupter and carries a contact 4 adjacent its inner end upon a pressed out portion thereof.
  • the connector comprises a main body portion 5, U-shaped in cross section as shown in Figure 3, within which the strap 3 is disposed.
  • the body portion 5 is mounted on the base I by means of a stud 6 passing through a metallic insert 1 and an opening in the bight of the U-shaped body portion and threaded into the strap 3 as shown in Figures 3 and 4.
  • a separate top wall 8 for the connector has depending side wall portions 9 and I l embracing the side walls of the main body portion 5.
  • the depending wall portions 8 are individually hinged at l2 to the opposite side walls of the main body portion 5 so as to be swingably mounted. thereon.
  • the depending side walls 9 and H Adjacent the front end, the depending side walls 9 and H are provided with inwardly extending projections l3 adapted to be received in openings or depressions It in the opposite side walls of the main body portion 5 to normally hold the top 8 in assembled relation.
  • the opposite interior wall surfaces of the main body portion 5 are threaded at I5 and thetop 8 has a central opening similarly threaded to receive a clamping screw l6 which is thus threadedly engaged with both the side walls of the body portion 5 and the opening in the top 8.
  • the conducting strap 3 has its upper surface within the connector provided with a plurality of upwardly extending projections I'l against which the strands of the cable 2 are pressed to prevent their withdrawal from the connector.
  • the connector may be formed of any desired materials, it is preferred to form the main body portion 5 and the clamping screw iii of a metal of relatively high conductivity since these parts serve to carry at least a portion of the current between the cable 2 to the conducting strap 3. While copper is acceptable for th s purpose, in order to increase the strength of the connector, it has been found more desirable to form these parts of bronze or brass.
  • the top is a non-current carrying part and as it serves structurally to prevent spreading apart of the side walls of the main body portion 5 as well as receiving the screw l6, it is preferably formed of steel or similar material of high strength.
  • the end or the cable 2 is clamped between the screw l6 and strap 3 to mechanically and electrically mount it in the connector.
  • the screw it exerts its mechanical pressure not only through its engagement with the threads [5 is. the opposite side walls of the main body portion 5 of the connector,
  • the cable end may be laid directly into the connector from the top in the position in which it is to be clamped. Thereafter, the top 8 is returned to its normal position paralleled to the bottom wall of the connector and the screw I6 is advanced inwardly into clamping relation with the cable end.
  • the top In the operative position of the screw I6 in which it is in threaded engagement not only with the top 8 but also with the side walls of the main body portion 5, the top is maintained in enclosed position not only by the interengagement of the projections and recesses l3 and H but also through the interconnection of the threaded portions of the top and main body portion by the screw itself.
  • a solderless connector for electrically connecting an electric cable
  • a main body portion of substantially U-shape a cap portion having depending side walls embracing the side walls of the body portion, means connecting the side walls of said body and cap portions to permit movement of the cap portion to uncover the connector from the top, an opening in said cap portion, and a clamping screw threaded in said opening and in the opposite side walls of the body portion and serving to clamp the end of an electric cable within the connector, said screw connecting the threads in said opening and those in the opposite side walls of the body portion so as to maintain the cap portion in clamping position on the body portion against the clamping force.
  • a solderless connector for electrically connecting an electric cable
  • a main body portion of substantially U-shape formed of material of relatively high electrical conductivity
  • a cap portion formed of a material of relatively high mechanical strength and having depending side walls embracing the side walls of the body portion
  • a solderless connector for electrically connecting an electric cable
  • a main body portion of substantially U-shape a cap portion hingedly mounted on said body portion for swing-- ing movement to uncover the connector from the top
  • interengaging means at said cap and body portion for normally maintaining the cap in its operative position connecting the opposite side walls of the body portion to prevent spreading thereof, an opening through said cap portion, and a clamping screw threaded in said opening and in the opposite side walls of said body portion for clamping the end of an electric cable within the connector, said screw connecting the threads in said opening and those in the opposite side walls of the body portion so as to maintain the cap portion in clamping position on the body portion against the clamping force.
  • a solderless connector for electrically connecting an electric cable
  • a main body portion of substantially U-shape a cap portion hingedly mounted on said main body portion for swinging movement to uncover the connector from the top, said cap portion having means engaging the opposite side walls ofsaid body portion to prevent spreading thereof when the cap portion is in closed position, an opening through said cap portion, and a clamping screw threaded in said opening and in the opposite side walls of said body portion for clamping the end of an electric cable within the connector.
  • a solderless connector for electrically connecting an electric cable
  • a main body portion of substantially U-shape a cap portion having depending side walls embracing the side walls of the body portion, means hingedly connecting the side walls of the cap and body portions adjacent one end of the. connector to permit swinging of the cap portion to uncover the connector from the top, interengaging means on the side walls of said cap and body portions adjacent the opposite end of the connector to normally maintain the cap portion in its operative position, an opening through said cap portion, and a clamping screw threaded in said opening and in the opposite side walls of said body portion for clamping the end of an electric cable within the connector.
  • a solderless connector for electrically connecting an electric cable
  • a main body portion of substantially U-shape formed of material of 5 good electrical conductivity a steel cap portion having depending side walls embracing the side walls of the body portion, means hingedly connecting the side walls of the cap and body portions adjacent one end of the connector to permit swinging of the cap portion to uncover the connector from the top, interengaging means on the side walls of said cap and body portions adjacent the end of the connector to normally maintain the cap portion in its operative position, an opening through said cap portion, and a clamping screw of good electrical conductivity threaded in said opening and in the opposite side walls of said body portion for clamping the end of an electric cable within the connector.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Description

Jane 3%, 19511 R. H. KINGDON 2539 628 SOLDERLESS CONNECTOR Filed Feb. 8, 1947 INVENTOIL Roi ,4 lzz'rr Joiz.
Patented Jan. 30, 1951 SOLDERLESS CONNECTOR Ralph H. Kingdon, Detroit, Mich" assignor to Square D Company, Detroit, Mich., a corporation of Michigan Application February 8, 1947, Serial No. 727,356
7 Claims. 1
This invention relates to a solderless connector for electric conductors in which electric cables are mechanically clamped in electrically conducting relation as distinguished from attachment by means of a solder lug.
An object of the invention is to provide a solderless connector which shall efiectively, mechanically and electrically connect an electric cable to a conducting part with the connector receiving the cable end from the top of the connector rather than through an end opening.
Another object of the invention is the provision of a solderless connector in which a cable end may be inserted from the top in which the top or cover of the connector is hingedly mounted on the body portion thereof so as to pivot into a non-interfering position.
Another object of the invention is the provision of a solderless connector in accordance with the preceding object in which the swinging top or cover has means interlocking with the body portion of the connector to normally retain the cover in place.
Another object of the invention is the provision of a solderless connector in accordance with the two immediately preceding objects in which the cover and opposite sides of the connector are threaded to receive a clamping screw adapted to clamp the electrical conductors against the bottom of the connector.
Other objects and features of the invention will be readily apparent to those skilled in the art from the specification and appended drawing illustrating certain preferred embodiments in which:
Figure l is a top plan view showing a solderless connector according to the present invention.
Figure 2 is a side elevational view of the connector.
Figure 3 is transverse sectional view on the line III-III of Figure 2.
Figure 4 is a longitudinal sectional view on the line IV-IV of Figure 3.
Figure 5 is an elevational view of the connector with the top cover swung into cable inserting position.
Figure 6 is a perspective view 01' one form of conducting strap with which the solderless connector may be associated.
The solderless connector, as shown in the drawings,.is mounted upon an insulating base I and connects an electric circuit cable 2 to a conducting strap 3 which, as specifically shown, forms a terminal of a circuit interrupter and carries a contact 4 adjacent its inner end upon a pressed out portion thereof. The connector comprises a main body portion 5, U-shaped in cross section as shown in Figure 3, within which the strap 3 is disposed. The body portion 5 is mounted on the base I by means of a stud 6 passing through a metallic insert 1 and an opening in the bight of the U-shaped body portion and threaded into the strap 3 as shown in Figures 3 and 4.
A separate top wall 8 for the connector has depending side wall portions 9 and I l embracing the side walls of the main body portion 5. At the back end of the connector, the depending wall portions 8 are individually hinged at l2 to the opposite side walls of the main body portion 5 so as to be swingably mounted. thereon. Adjacent the front end, the depending side walls 9 and H are provided with inwardly extending projections l3 adapted to be received in openings or depressions It in the opposite side walls of the main body portion 5 to normally hold the top 8 in assembled relation.
The opposite interior wall surfaces of the main body portion 5 are threaded at I5 and thetop 8 has a central opening similarly threaded to receive a clamping screw l6 which is thus threadedly engaged with both the side walls of the body portion 5 and the opening in the top 8. The conducting strap 3 has its upper surface within the connector provided with a plurality of upwardly extending projections I'l against which the strands of the cable 2 are pressed to prevent their withdrawal from the connector.
While the connector may be formed of any desired materials, it is preferred to form the main body portion 5 and the clamping screw iii of a metal of relatively high conductivity since these parts serve to carry at least a portion of the current between the cable 2 to the conducting strap 3. While copper is acceptable for th s purpose, in order to increase the strength of the connector, it has been found more desirable to form these parts of bronze or brass.
The top is a non-current carrying part and as it serves structurally to prevent spreading apart of the side walls of the main body portion 5 as well as receiving the screw l6, it is preferably formed of steel or similar material of high strength.
As shown in Figures 1 through 4, the end or the cable 2 is clamped between the screw l6 and strap 3 to mechanically and electrically mount it in the connector. The screw it exerts its mechanical pressure not only through its engagement with the threads [5 is. the opposite side walls of the main body portion 5 of the connector,
but also through its threaded engagement in the steel top 8, with the top maintained on the main body portion of the connector by the hinges l2 and the interengaged projections and recesses 13 and M. In mounting the cable 2 within the connector and particularly in the case of heavy cables which are relatively stiif and resist easy bending and forming operations, the screw [6 is either removed, or withdrawn until it engages only the threads in the top 8, whereupon the top is rotated or swung into the position of Figure to uncover the connector. In this operation the projections l3 are disengaged from the openings or recesses l4 by the natural resiliency of the side walls of the top 8 and/or the side walls of the body portion 5. With the top 8 in the position of Figure 5, the cable end may be laid directly into the connector from the top in the position in which it is to be clamped. Thereafter, the top 8 is returned to its normal position paralleled to the bottom wall of the connector and the screw I6 is advanced inwardly into clamping relation with the cable end.
In the operative position of the screw I6 in which it is in threaded engagement not only with the top 8 but also with the side walls of the main body portion 5, the top is maintained in enclosed position not only by the interengagement of the projections and recesses l3 and H but also through the interconnection of the threaded portions of the top and main body portion by the screw itself.
While the connector has been illustrated with the strap 3 within its walls and serving to mount it in place, it is obvious that the connector may be mounted above the strap by the simple reversal of the positions of the end of the strap 3 and the bottom wall of the connector and, while certain preferred embodiments of the application have been specifically disclosed, it is understood that the invention is not limited thereto, as many variations will be readily apparent to those skilled in the art and the invention is to be given its broadest possible interpretation within the terms of the following claims.
What is claimed is:
1. In a solderless connector for electrically connecting an electric cable, a main body portion of substantially U-shape, a cap portion having depending side walls embracing the side walls of the body portion, means connecting the side walls of said body and cap portions to permit movement of the cap portion to uncover the connector from the top, an opening in said cap portion, and a clamping screw threaded in said opening and in the opposite side walls of the body portion and serving to clamp the end of an electric cable within the connector, said screw connecting the threads in said opening and those in the opposite side walls of the body portion so as to maintain the cap portion in clamping position on the body portion against the clamping force.
2. In a solderless connector for electrically connecting an electric cable, a main body portion of substantially U-shape formed of material of relatively high electrical conductivity, a cap portion formed of a material of relatively high mechanical strength and having depending side walls embracing the side walls of the body portion, means connecting the side walls of said body and cap portions to permit movement of the cap portion to uncover the connector from clamping screw threaded in said opening and in the opposite side walls of the body portion and serving to clamp the end of an electric cable within the connector, said screw connecting the threads in said opening and those in the opposite side walls of the body portion so as to maintain the cap portion in clamping position on the body portion against the clamping force.
3. In a solderless connector for electrically connecting an electric cable, a main body portion of substantially U-shape, a cap portion hingedly mounted on said body portion for swing-- ing movement to uncover the connector from the top, interengaging means at said cap and body portion for normally maintaining the cap in its operative position connecting the opposite side walls of the body portion to prevent spreading thereof, an opening through said cap portion, and a clamping screw threaded in said opening and in the opposite side walls of said body portion for clamping the end of an electric cable within the connector, said screw connecting the threads in said opening and those in the opposite side walls of the body portion so as to maintain the cap portion in clamping position on the body portion against the clamping force.
4. In a solderless connector for electrically connecting an electric cable, a main body portion of substantially U-shape, a cap portion hingedly mounted on said main body portion for swinging movement to uncover the connector from the top, said cap portion having means engaging the opposite side walls ofsaid body portion to prevent spreading thereof when the cap portion is in closed position, an opening through said cap portion, and a clamping screw threaded in said opening and in the opposite side walls of said body portion for clamping the end of an electric cable within the connector.
5. In a solderless connector for electrically connecting an electric cable, a main body portion of substantially U-shape, a cap portion having depending side walls embracing the side walls of the body portion, means hingedly connecting the side walls of the cap and body portions adjacent one end of the. connector to permit swinging of the cap portion to uncover the connector from the top, interengaging means on the side walls of said cap and body portions adjacent the opposite end of the connector to normally maintain the cap portion in its operative position, an opening through said cap portion, and a clamping screw threaded in said opening and in the opposite side walls of said body portion for clamping the end of an electric cable within the connector.
6. In a solderless connector for electrically connecting an electric cable, a main body portion of substantially U-shape formed of a material having relatively high electric conductivity, a cap portion formed of a material having relatively high mechanical strength and having depending side walls embracing the side walls of the body portion, means hingedly connecting the side walls of the cap and body portions adjacent one end of the connector to permit swinging of the cap portion to uncover the connector from the top, an opening through said cap portion, and a clamping screw threaded in said opening and in the opposite side walls of said body portion for clamping the end of an electric cable within the connector.
7. In a solderless connector for electrically connecting an electric cable, a main body portion of substantially U-shape formed of material of 5 good electrical conductivity, a steel cap portion having depending side walls embracing the side walls of the body portion, means hingedly connecting the side walls of the cap and body portions adjacent one end of the connector to permit swinging of the cap portion to uncover the connector from the top, interengaging means on the side walls of said cap and body portions adjacent the end of the connector to normally maintain the cap portion in its operative position, an opening through said cap portion, and a clamping screw of good electrical conductivity threaded in said opening and in the opposite side walls of said body portion for clamping the end of an electric cable within the connector.
RALPH H. KINGDON.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Jensen Mar. 13, 1945
US727356A 1947-02-08 1947-02-08 Solderless connector Expired - Lifetime US2539628A (en)

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2646485A (en) * 1950-02-08 1953-07-21 Fed Electric Prod Co Combined contact and terminal member for electric switches
US2658978A (en) * 1948-10-29 1953-11-10 Cutler Hammer Inc Electric switch
US2795685A (en) * 1955-02-02 1957-06-11 Acra Electric Corp Electrical connector
US2798113A (en) * 1954-03-29 1957-07-02 Bell Telephone Labor Inc Shield connectors
US2899524A (en) * 1959-08-11 smith
US2938191A (en) * 1958-02-24 1960-05-24 Murray Mfg Corp Electrical pressure connector
US2988615A (en) * 1957-02-28 1961-06-13 Bernier Raymond Movable contacts for electromagnetic relays
US3066277A (en) * 1958-04-21 1962-11-27 Ite Circuit Breaker Ltd Solderless connector
US3118718A (en) * 1960-09-20 1964-01-21 Hubbell Inc Harvey Electrical wiring device
US3124409A (en) * 1964-03-10 electrical connector
US3125398A (en) * 1964-03-17 Electrical connector for neutral bars
US3391359A (en) * 1966-06-09 1968-07-02 Square D Co Stationary contact structure and magnet support for an electromagnetic contactor
US3683414A (en) * 1970-04-13 1972-08-08 Gerald J Deangelo Terminal device
US4306126A (en) * 1979-08-16 1981-12-15 Howard D U Battery cable switch
US4410775A (en) * 1979-08-16 1983-10-18 Howard D U Snap-action battery cable switch
WO1992021885A1 (en) * 1991-06-04 1992-12-10 Doninger Michael B Improved end finishing device for rope, wire, cable, and the like

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1741804A (en) * 1928-06-02 1929-12-31 Park Metalware Co Inc Clamp for electrical cables
US2088481A (en) * 1936-05-21 1937-07-27 Westinghouse Electric & Mfg Co Terminal clamp
US2145556A (en) * 1937-02-03 1939-01-31 Metropolitan Device Corp Solderless connecter
US2147160A (en) * 1937-10-09 1939-02-14 Emil T Hagist Wire clamp and connecter
US2199793A (en) * 1938-02-19 1940-05-07 Trumbull Electric Mfg Co Terminal clamp for electric fuses, etc.
US2265911A (en) * 1939-08-18 1941-12-09 Wadsworth Electric Mfg Co Solderless wire connector
US2312240A (en) * 1939-07-07 1943-02-23 Dibner Bern Nut retainer for electrical connectors
US2371446A (en) * 1942-06-11 1945-03-13 Cole Electric Products Co Inc Electrical connector

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1741804A (en) * 1928-06-02 1929-12-31 Park Metalware Co Inc Clamp for electrical cables
US2088481A (en) * 1936-05-21 1937-07-27 Westinghouse Electric & Mfg Co Terminal clamp
US2145556A (en) * 1937-02-03 1939-01-31 Metropolitan Device Corp Solderless connecter
US2147160A (en) * 1937-10-09 1939-02-14 Emil T Hagist Wire clamp and connecter
US2199793A (en) * 1938-02-19 1940-05-07 Trumbull Electric Mfg Co Terminal clamp for electric fuses, etc.
US2312240A (en) * 1939-07-07 1943-02-23 Dibner Bern Nut retainer for electrical connectors
US2265911A (en) * 1939-08-18 1941-12-09 Wadsworth Electric Mfg Co Solderless wire connector
US2371446A (en) * 1942-06-11 1945-03-13 Cole Electric Products Co Inc Electrical connector

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125398A (en) * 1964-03-17 Electrical connector for neutral bars
US2899524A (en) * 1959-08-11 smith
US3124409A (en) * 1964-03-10 electrical connector
US2658978A (en) * 1948-10-29 1953-11-10 Cutler Hammer Inc Electric switch
US2646485A (en) * 1950-02-08 1953-07-21 Fed Electric Prod Co Combined contact and terminal member for electric switches
US2798113A (en) * 1954-03-29 1957-07-02 Bell Telephone Labor Inc Shield connectors
US2795685A (en) * 1955-02-02 1957-06-11 Acra Electric Corp Electrical connector
US2988615A (en) * 1957-02-28 1961-06-13 Bernier Raymond Movable contacts for electromagnetic relays
US2938191A (en) * 1958-02-24 1960-05-24 Murray Mfg Corp Electrical pressure connector
US3066277A (en) * 1958-04-21 1962-11-27 Ite Circuit Breaker Ltd Solderless connector
US3118718A (en) * 1960-09-20 1964-01-21 Hubbell Inc Harvey Electrical wiring device
US3391359A (en) * 1966-06-09 1968-07-02 Square D Co Stationary contact structure and magnet support for an electromagnetic contactor
US3683414A (en) * 1970-04-13 1972-08-08 Gerald J Deangelo Terminal device
US4306126A (en) * 1979-08-16 1981-12-15 Howard D U Battery cable switch
US4410775A (en) * 1979-08-16 1983-10-18 Howard D U Snap-action battery cable switch
WO1992021885A1 (en) * 1991-06-04 1992-12-10 Doninger Michael B Improved end finishing device for rope, wire, cable, and the like
US5192144A (en) * 1991-06-04 1993-03-09 Doninger Michael B End finishing device for rope, wire, cable, and the like

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