US3586808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Button type composite contact
Assignee: Chugai Electric Industrial Co Ltd
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Filing: 1969-04-14
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Granted: 1971-06-22
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Expires: 1989-04-14
Abstract
Abstract A button-type composite contact having a contact surface element of precious metal bonded to a composite base metal backup element. The composite backup element is formed of a first base metal portion in integral relation with a second base metal portion. An end face of the integral first and second base metal portions is intimately pressure bonded to the precious metal contact element via one of said base metals which is pressure bondable to the precious metal. The other of said base metals is spot weldable at the free end of said composite backup element, such that the button-type contact element can be spot welded via the free end of said backup element to another metallic element.
Inventors
- 👤 Akira Shibata
- 👤 Shigeru Tabei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:14
CPC Classifications
H; H01; H01H; H01H11/00; H01H11/04; H01H1/00; H01H1/02; H01H1/021; H01H1/023; H01H1/0231
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
111 words
A button-type composite contact comprising, a contact surface element of precious metal bonded to a composite base metal backup element, said composite backup element being formed of a first base metal portion integral with a second base metal portion, an end face of said integral first and second base metal portions being intimately pressure bonded to said precious metal contact element via one of said base metals which is pressure bondable to said precious metal, the other of said base metals being spot weldable at the free end of said composite backup element, such that the button-type contact can be spot welded via the free end thereof to a metallic element.
Claim 2
Dependent Claim
111 words
A button-type composite contact comprising, a contact surface element of precious metal bonded to a composite base metal backup element, said composite backup element being formed of a first base metal portion integral with a second base metal portion, an end face of said integral first and second base metal portions being intimately pressure bonded to said precious metal contact element via one of said base metals which is pressure bondable to said precious metal, the other of said base metals being spot weldable at the free end of said composite backup element, such that the button-type contact can be spot welded via the free end thereof to a metallic element.
Claim 3
Dependent Claim
50 words
The button-type composite contact of claim 1, wherein the composite backup element consists essentially of a core of said first base metal having an outer wall of said second base metal integral therewith, the precious metal contact element being pressure bonded to an end face of the composite backup element.
Claim 4
Dependent Claim
87 words
The button-type composite contact of claim 2, wherein the precious metal is selected from the group consisting of gold, silver, platinum and alloys thereof, wherein one of said base metals is selected from the group consisting of silver, copper and aluminum and is pressure bondable relative to said precious metal, and wherein the other of said base metals is selected from the group consisting of nickel, cupronickel, monel metal, phosphor bronze, nickel silver, beryllium-copper alloy and stainless steel characterized by being spot weldable to a metallic surface.
Claim 5
Dependent Claim
46 words
The button-type composite contact element of claim 3, wherein the base metal forming the core of the composite backup element is pressure bondable to said precious metal contact element, and wherein the base metal forming the outer wall of said composite backup element is spot weldable.
Claim 6
Dependent Claim
46 words
The button-type composite contact element of claim 4, wherein the base metal forming the core of said composite backup element is spot weldable, and wherein the base metal forming the outer wall of said composite backup element is pressure bondable to said precious metal contact element.
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |