US4927788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monolithic female connector
Assignee: Dowa Holdings Co Ltd
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Filing: 1988-11-29
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Granted: 1990-05-22
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Expires: 2008-11-29
Abstract
Abstract A monolithic female connector made of a copper-base alloy consisting essentially of 7-15 wt % Ni, 1.0-2.0 wt % Al, no more than 0.0050 wt % 02, and the balance of Cu and incidental impurities is highly useful as an electrical connector element of low signal current used in automobiles, because it is made of the alloy having improved bendability while satisfying high electrical conductivity and spring limit.
Inventors
- 👤 Kazutaka Nakashima
- 👤 Kazuya Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:43
CPC Classifications
C; C22; C22C; C22C9/00; C22C9/06; H; H01; H01R; H01R13/00; H01R13/02; H01R13/03; H01R13/10; H01R13/11; H01R13/114; H01R4/00; H01R4/58; H01R43/00; H01R43/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
80 words
A female connector of a monolithic structure comprising a spring element, a socket portion and a wire-connecting portion, said spring element, socket portion and wire-connecting portion being integrally formed as one piece by press-working and punching from a single thin plate made of a copper-base alloy consisting essentially of 7-15 wt % Ni, 1.0-2.0 wt % Al, not more than 0.0050 wt % 0 2 and the balance of Cu and incidental impurities, said thin plate having a uniform thickness.
Claim 2
Dependent Claim
80 words
A female connector of a monolithic structure comprising a spring element, a socket portion and a wire-connecting portion, said spring element, socket portion and wire-connecting portion being integrally formed as one piece by press-working and punching from a single thin plate made of a copper-base alloy consisting essentially of 7-15 wt % Ni, 1.0-2.0 wt % Al, not more than 0.0050 wt % 0 2 and the balance of Cu and incidental impurities, said thin plate having a uniform thickness.
Claim 3
Dependent Claim
35 words
The female connector of claim 1 wherein said copper-base alloy consists essentially of 15.0 wt % Ni, 1.5 wt % Al, 0.0029 wt % 0 z , and the balance of Cu and incidental impurities.
Claim 4
Dependent Claim
34 words
The female connector of claim 1 wherein said copper-base alloy consists essentially of 11.0 wt % Ni. 1.6 wt % Al. 0.0032 wt % 0 2 and the balance of Cu and incidental impurities.
Claim 5
Dependent Claim
34 words
The female connector of claim 1 wherein said copper-base alloy consists essentially of 10.9 wt % Ni,, 1.0 wt % Al. 0.0024 wt % 0 2 and the balance of Cu and incidental impurities.
Claim 6
Dependent Claim
34 words
The female connector of claim 1 wherein said copper-base alloy consists essentially of 8.7 wt % Ni, 1.7 wt % Al, 0.0030 wt % 0 z and the balance of Cu and incidental impurities.
Claim 7
Dependent Claim
34 words
The female connector of claim 1 wherein said copper-base alloy consists essentially of 7.0 wt % Ni, 1.0 wt % Al, 0.0042 wt % 0 2 and the balance of Cu and incidental impurities.
Claim 8
Dependent Claim
36 words
The female connector of claim 1 wherein said copper-base alloy consists essentially of 11 wt % Ni. 1.7 wt % Al, less than 0.0050 wt % 0 z and the balance of Cu and incidental impurities.
Claim 9
Dependent Claim
34 words
The female connector of claim 1 wherein said copper-base alloy consists essentially of 10 wt % Ni, 1.5 wt % Al, 0.0040 wt % 0 z and the balance of Cu and incidental impurities.
Claim 10
Dependent Claim
111 words
The female connector of claim 1 wherein said plate has the following properties: (i) electrical conductivity: 10-20% IACS; (ii) spring limit: ≧45 Kgf/mm 2 ; (iii) workability with press: good bent surface is obtained in 90° W bending test (CES-M-0002-6) at R/t=1.0 where R is the bending radius and t is the thickness of a plate under test; (iv) stress relaxation characteristics which serve as an index for stability in the contact pressure of spring; No more than 10% stress relaxation after exposure to 200° C.×500 h; and (v) reliability of plating: no Au or Sn plated coat separation occurs in 90° W bend test after exposure to 150° C.×500 h.
References Cited (Backward Citations)
SU248228A1
Cited
US1509608A
Cited
GB413332A
Cited
US2034562A
Cited
US2514336A
Cited
US2851353A
Cited
US3363224A
Cited
GB1161610A
Cited
US3425030A
Cited
GB1194632A
Cited
GB1289301A
Cited
US3697934A
Cited
GB1312725A
Cited
JPS496735A
Cited
GB1582428A
Cited
US4338130A
Cited
JPS5834154A
Cited
US4593963A
Cited
US4564259A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-21 | 1993-11-20 | 1994-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-21 | 1997-11-20 | 1998-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-21 | 2001-11-20 | 2002-05-22 | $7700.00 | Window Closed / Lapsed |