US4913678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical contact
Assignee: Osram Sylvania Inc
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Filing: 1989-02-02
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Granted: 1990-04-03
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Expires: 2009-02-02
Abstract
Abstract An electrical contact comprises a first end which is hollow and bullet shaped. The first end is formed by rolling sheet material. A second end, which is solid and formed from wire is affixed to the first end at a crimp joint. The joint is formed at a tail or terminus of the first and is rolled about the second end to form a gas tight seal. To complete the connection, a laser weld fuses the edges of the crimp and penetrates into the second end.
Inventors
- 👤 Frank J. Avellino
- 👤 Glenn A. Culbertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:54
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/02; H01R4/029; H01R4/10; H01R4/18; H01R4/187; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49174; Y10T29/49179
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
104 words
An electrical contact comprising: a first hollow, bullet shaped end formed by rolling sheet material; a second, solid, wire-like end affixed to said first end at a crimp joint, said crimp joint being formed from a tail of said first end and being rolled about said second end to form a gas tight seal, the mating peripheral petal edges of said crimp seal contacting each other and said second end to form a trough; and a laser weld located on said crimp petals, said weld joining said petals and penetrating said wire-like second end to effectively prevent said second end from being axially removed.
Claim 2
Dependent Claim
104 words
An electrical contact comprising: a first hollow, bullet shaped end formed by rolling sheet material; a second, solid, wire-like end affixed to said first end at a crimp joint, said crimp joint being formed from a tail of said first end and being rolled about said second end to form a gas tight seal, the mating peripheral petal edges of said crimp seal contacting each other and said second end to form a trough; and a laser weld located on said crimp petals, said weld joining said petals and penetrating said wire-like second end to effectively prevent said second end from being axially removed.
Claim 3
Dependent Claim
19 words
The electrical contact of claim 1 wherein said weld occupies about 1/3 of the length of said crimp joint.
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) | 1993-04-02 | 1993-10-02 | 1994-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-02 | 1997-10-02 | 1998-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-02 | 2001-10-02 | 2002-04-03 | $7700.00 | Window Closed / Lapsed |