US3781765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical connectors with internal and external strain-relief for conductor wires
Assignee: Cooper Industries LLC
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Filing: 1969-04-03
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Granted: 1973-12-25
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Expires: 1989-04-03
Abstract
Abstract A dead-front connector has two means to grip the wires within the housing, plus a means to grip the whole cord outside the housing, and a seal to prevent bits of foreign matter from entering the housing. The outside means grips the cord as a whole and is made to conform to the shape of any standard size wire reducing to a minimum the crushing force and danger of short circuit. One internal gripping means is the connection between the conductor and its respective contact member. The other internal gripping means grips the insulation of each individual wire so that it is not possible to apply a force to the terminal connection of any wire and contact by pulling from outside the housing. Pulling the wires out of engagement with their contact members with the attendant danger of causing a short circuit within the housing is thus prevented.
Inventors
- 👤 H Schleicher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:58
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/46; H01R13/502
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
120 words
An electrical connector having an insulating body, contact and terminal means supported by said body, said body means having a passage for a conductor cord having a plurality of wires, strain relief means mounted on said body comprising a pair of clamping members adapted to be positioned on opposite sides of the cord, means to draw said clamping members toward each other against the cord, means to secure the clamping members to said body, said clamping members comprising a transverse portion tangential to the cord and a flexible arcuate cord-gripping portion spaced inwardly from said tangential portion, said arcuate portion being connected to said transverse portion by a rib permitting movement of said arcuate portion to adapt to the cord.
Claim 2
Dependent Claim
120 words
An electrical connector having an insulating body, contact and terminal means supported by said body, said body means having a passage for a conductor cord having a plurality of wires, strain relief means mounted on said body comprising a pair of clamping members adapted to be positioned on opposite sides of the cord, means to draw said clamping members toward each other against the cord, means to secure the clamping members to said body, said clamping members comprising a transverse portion tangential to the cord and a flexible arcuate cord-gripping portion spaced inwardly from said tangential portion, said arcuate portion being connected to said transverse portion by a rib permitting movement of said arcuate portion to adapt to the cord.
Claim 3
Dependent Claim
18 words
An electric connector as claimed in claim 1 in which the clamping members are one-piece molded insulation members.
Claim 4
Dependent Claim
160 words
An electrical connector comprising first rigid insulating body means, a plurality of contact means, wire terminal means on said contact means, said wire terminal means being mounted within said body means, second rigid insulating body means including a passage for a conductor cord having a plurality of insulated wires, a pyramidal stepped formation comprising a plurality of steps formed integrally on one of said bodies and extending toward the other individually engaging the individual wires on one side between said passage and said wire terminal means, a thin flexible member on one of said bodies engaging the wires individually on the opposite side from said stepped formation when said bodies are secured together, said flexible member being adapted to accommodate different thicknesses of wires and resiliently bite into them, whereby said wires are gripped to prevent strain exerted on said conductor cord and wires from reaching said terminal means, and means to secure said first and second body means together.
Claim 5
Dependent Claim
160 words
An electrical connector comprising first rigid insulating body means, a plurality of contact means, wire terminal means on said contact means, said wire terminal means being mounted within said body means, second rigid insulating body means including a passage for a conductor cord having a plurality of insulated wires, a pyramidal stepped formation comprising a plurality of steps formed integrally on one of said bodies and extending toward the other individually engaging the individual wires on one side between said passage and said wire terminal means, a thin flexible member on one of said bodies engaging the wires individually on the opposite side from said stepped formation when said bodies are secured together, said flexible member being adapted to accommodate different thicknesses of wires and resiliently bite into them, whereby said wires are gripped to prevent strain exerted on said conductor cord and wires from reaching said terminal means, and means to secure said first and second body means together.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |