US3771977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing surface
Assignee: Hooker Chemical Corp
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Filing: 1971-12-27
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Granted: 1973-11-13
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Expires: 1991-12-27
Abstract
Abstract A bearing material which comprises a base, which base has a phenolic or other thermoset plastic surface, and a bearing surface, adherently deposited on said phenolic surface, of from 0.02 to 0.62 mils of at least one metal selected from nickel, copper and chromium. The metal bearing surface may be a single layer of an electrolessly applied metal, such as an electroless nickel layer, or multiple layers of electrolessly and electrolytically applied metal, having a total thickness of 0.02 to 0.62 mils.
Inventors
- 👤 Liu C Tan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:10
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/936; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12569; Y10T428/12639; Y10T428/12646; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12847; Y10T428/12854; Y10T428/12861; Y10T428/12903; Y10T428/1291; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31678; Y10T428/31688
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
21 words
The bearing material as claimed in claim 1 in which the thermoset plastic surface on said base is a phenolic surface.
Claim 2
Dependent Claim
20 words
The bearing material as claimed in claim 2 in which the base is formed substantially entirely of a phenolic material.
Claim 3
Dependent Claim
23 words
The bearing material as claimed in claim 3 wherein the metallic bearing surface is an electrolessly deposited metal selected from the indicated group.
Claim 4
Dependent Claim
38 words
The bearing material as claimed in claim 3 wherein the metal bearing surface is formed by the electroless deposition of a metal from the indicated group followed by electrolytic deposition of one or more of the indicated metals.
Claim 5
Dependent Claim
44 words
The bearing material as claimed in claim 5 wherein the bearing surface is formed by the electroless deposition of a nickel layer, followed by the electrolytic deposition of at least one nickel layer, and thereafter followed by the electrolytic deposition of a chromium layer.
Claim 6
Dependent Claim
19 words
The bearing material as claimed in claim 4 wherein the bearing surface is an electrolessly deposited layer of copper.
Claim 7
Dependent Claim
19 words
The bearing material as claimed in claim 4 wherein the bearing surface is an electrolessly deposited layer of nickel.
Claim 8
Dependent Claim
22 words
The bearing material as claimed in claim 8 wherein the bearing surface has a thickness of from about 0.05 to 0.3 mils.
Claim 9
Dependent Claim
20 words
The bearing material as claimed in claim 9 wherein the metallic bearing surface has a thickness of about 0.1 mil.
References Cited (Backward Citations)
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Cited
US3479160A
Cited
US3488166A
Cited
US3629922A
Cited
US3661538A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |