US3639883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ground contact for receptacle
Assignee: Slater Electric Inc
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Filing: 1970-09-21
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Granted: 1972-02-01
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Expires: 1990-09-21
Abstract
Abstract A ground contact for use with an electrical receptacle comprises an integral metal stamping having two generally U-shaped bridges interconnected by two connecting portions at their open ends, and two leaf springs extending from respective connecting portions into a prong-receiving opening of the receptacle mounting strap. When a grounding prong is inserted into this opening, it forces the leaf springs against edges of the mounting strap so that the springs can be flexed against these edges. As a result, the flexed leaf springs apply substantial holding pressure to the grounding prong.
Inventors
- 👤 William Drapkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:35
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/648; H01R13/652
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
A ground contact for use with an electrical receptacle having an electrically conductive mounting strap which is adapted to be secured within an electrical outlet box and including an opening to receive the grounding prong of an electrical plug, comprising an integral metal stamping having two generally U-shaped bridges, said bridges each including a central strip overlying said strap in a region adjacent said opening and two outwardly extending legs, two connecting portions interconnecting said bridges at their open ends, said connecting portions disposed to receive said prong therebetween, a pair of leaf springs extending from respective ones of said connecting portions into said opening, and means for mechanically, and electrically connecting said metal stamping to said mounting strap.
Claim 2
Dependent Claim
119 words
A ground contact for use with an electrical receptacle having an electrically conductive mounting strap which is adapted to be secured within an electrical outlet box and including an opening to receive the grounding prong of an electrical plug, comprising an integral metal stamping having two generally U-shaped bridges, said bridges each including a central strip overlying said strap in a region adjacent said opening and two outwardly extending legs, two connecting portions interconnecting said bridges at their open ends, said connecting portions disposed to receive said prong therebetween, a pair of leaf springs extending from respective ones of said connecting portions into said opening, and means for mechanically, and electrically connecting said metal stamping to said mounting strap.
Claim 3
Dependent Claim
43 words
A ground contact according to claim 1, wherein said leaf springs are sufficiently close to the edges of the strap which define said opening to cause said leaf springs to be flexed against said edges when said prong is inserted between said springs.
Claim 4
Dependent Claim
15 words
A ground contact according to claim 2, wherein said leaf springs extend toward each other.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |