Patent US3562467A successfully refreshed from Google Patents.
US3562467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical contact
Assignee: Engelhard Minerals and Chemicals Corp
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Filing: 1969-06-04
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Granted: 1971-02-09
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Expires: 1989-06-04
Abstract
Abstract An electrical contact of the rivet type comprising a metal head and a metal shank, the head being a bimetallic head composed of a layer of contact metal, e.g. silver, and a backing layer of another metal from which extends the rivet shank and which is preferably of the same metal composition as the metal backing layer, both the shank and the backing layer, including the under surface and the peripheral sides of the backing layer being coated with a layer of metal solder having a lower melting point than the contact metal, the backing layer and the shank.
Inventors
- 👤 Victor G Mooradian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:10
CPC Classifications
H; H01; H01H; H01H11/00; H01H11/04; H01H11/041; H01H11/045
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
71 words
An electrical contact of the rivet type comprising a metal head and a metal shank extending from one side of the head, the shank, and the side of the head adjacent the shank having coated thereon layer of metal solder having a lower melting point than the metal of the head and the metal of the shank, the metal solder layer having a thickness between about 0.005 to about 0.0002 inch.
Claim 2
Dependent Claim
71 words
An electrical contact of the rivet type comprising a metal head and a metal shank extending from one side of the head, the shank, and the side of the head adjacent the shank having coated thereon layer of metal solder having a lower melting point than the metal of the head and the metal of the shank, the metal solder layer having a thickness between about 0.005 to about 0.0002 inch.
Claim 3
Dependent Claim
50 words
An electrical contact according to claim 1, wherein the head is a bimetallic head composed of a surface layer of contact metal bonded to a backing layer of a metal different from the contact metal, and said metal solder layer extending over the peripheral surface of the said backing layer.
Claim 4
Dependent Claim
171 words
An electrical contact assembly comprising an electrical contact of the rivet type having a metal head and a metal shank joined to the head, the shank, and the side of the head adjacent the shank having coated thereon a layer of metal solder having a lower melting point than the metal of the head and the metal of the shank, the metal solder layer having a thickness between about 0.003 and 0.0005 inch, a metal arm having an aperture therethrough defined by the aperture wall, the shank of the rivet passing through the aperture with the solder-coated side of the head adjacent the shank abutting one side of the arm adjacent the aperture, the free end of the shank being staked in abutment with the opposite side of the arm adjacent the aperture, the solder being in heat alloyed condition as a soldered bond between the head of the rivet and the metal of the arm adjacent the aperture and between the rivet shank and the wall defining the arm aperture.
Claim 5
Dependent Claim
171 words
An electrical contact assembly comprising an electrical contact of the rivet type having a metal head and a metal shank joined to the head, the shank, and the side of the head adjacent the shank having coated thereon a layer of metal solder having a lower melting point than the metal of the head and the metal of the shank, the metal solder layer having a thickness between about 0.003 and 0.0005 inch, a metal arm having an aperture therethrough defined by the aperture wall, the shank of the rivet passing through the aperture with the solder-coated side of the head adjacent the shank abutting one side of the arm adjacent the aperture, the free end of the shank being staked in abutment with the opposite side of the arm adjacent the aperture, the solder being in heat alloyed condition as a soldered bond between the head of the rivet and the metal of the arm adjacent the aperture and between the rivet shank and the wall defining the arm aperture.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |