Patent US2274050A successfully refreshed from Google Patents.
Patent US4537462A successfully refreshed from Google Patents.
US4537462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical connector
Assignee: AMP Japan Ltd
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Filing: 1984-07-30
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Granted: 1985-08-27
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Expires: 2004-07-30
Abstract
Abstract An assist spring is provided for a female terminal having contact arms in a high conductivity electrical connector. The assist spring may be formed of high resilient material and have dual support to assist the lower resilience, more conductive material of the contact arms and provide greater contact force on a male terminal inserted into the female terminal.
Inventors
- 👤 Sakae Manabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:36
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/02; H01R13/15; H01R13/18
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
166 words
A spring assist means for a female electrical contact terminal, said female terminal having opposing contact arms to receive therebetween contact portions of a male terminal and being secured within a cavity of an insulating housing, said spring assist means comprising a spring body portion and leaf spring portions, said spring body portion securable to a body portion of said female terminal remote from contact portions of said contact arms, said leaf spring portions extending from said spring body portion along and proximate outer surfaces of said contact arms and including free ends engageable with and slidable along associated side walls of said housing cavity, whereby when a said male terminal is inserted into and between said contact arms, said contact arms are urged into engagement with said leaf springs whose free ends are urged into slidable engagement with said cavity side walls and thereby provide spring force against said contact arms increasing contact force of said contact arms with contact portions of said male terminal.
Claim 2
Dependent Claim
166 words
A spring assist means for a female electrical contact terminal, said female terminal having opposing contact arms to receive therebetween contact portions of a male terminal and being secured within a cavity of an insulating housing, said spring assist means comprising a spring body portion and leaf spring portions, said spring body portion securable to a body portion of said female terminal remote from contact portions of said contact arms, said leaf spring portions extending from said spring body portion along and proximate outer surfaces of said contact arms and including free ends engageable with and slidable along associated side walls of said housing cavity, whereby when a said male terminal is inserted into and between said contact arms, said contact arms are urged into engagement with said leaf springs whose free ends are urged into slidable engagement with said cavity side walls and thereby provide spring force against said contact arms increasing contact force of said contact arms with contact portions of said male terminal.
Claim 3
Dependent Claim
20 words
A spring assist means as set forth in claim 1 wherein said spring assist means is made of resilient material.
Claim 4
Dependent Claim
22 words
A spring assist means as set forth in claim 1 wherein said spring assist means is stamped and formed of stainless steel.
Claim 5
Dependent Claim
35 words
A spring assist means as set forth in claim 1 wherein said free ends of said leaf springs are normally spaced from said side walls when said male terminal is removed from said female terminal.
Claim 6
Dependent Claim
46 words
A spring assist means as set forth in claim 1 wherein an aperture is placed in each said leaf spring between said spring body portion and that point at which said leaf spring engages an associated contact arm to prevent stress concentration proximate said engagement point.
Claim 7
Dependent Claim
21 words
A spring assist means as set forth in claim 1 wherein said spring body portion extends substantially around said female terminal.
Claim 8
Dependent Claim
37 words
A spring assist means as set forth in claim 6 wherein said female terminal has a longitudinal seam and said spring body portion extends across said seam and tightly engages said female terminal holding said seam together.
Claim 9
Dependent Claim
71 words
A spring assist means as set forth in claim 1 wherein said contact arms of said female terminal first extend inward from said terminal body portion toward each other to a contact portion, then outward forming an inlet for a said male terminal, said leaf springs extending substantially parallel to said contact arms to an engagement point and then extend therefrom outward towards said cavity side walls to said free ends.
Claim 10
Dependent Claim
33 words
A spring assist means as set forth in claim 8 wherein said leaf springs normally engage said contact arms at said engagement point when said male terminal is removed from said female terminal.
References Cited (Backward Citations)
US1589066A
Cited
GB336612A
Cited
US2704838A
Cited
FR1427747A
Cited
US3836947A
Cited
US3914008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-26 | 1989-02-25 | 1989-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-26 | 1993-02-25 | 1993-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-26 | 1997-02-25 | 1997-08-27 | $7700.00 | Window Closed / Lapsed |