Patent US4335924A successfully refreshed from Google Patents.
US4335924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear resistant bearing
Assignee: MADELEINE AS SCIL AGENT LLC
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Filing: 1980-11-19
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Granted: 1982-06-22
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Expires: 2000-11-19
Abstract
Abstract A bearing assembly having an inner race member movably mounted in an outer race member, the inner surface of the outer member being a concave spherical surface and the outer surface of the inner member being a complementary convex spherical surface. The outer race member is received within an aperture formed in the head of a shank assembly. The bearing surfaces are formed of zinc-plated metal having a chromium skin layer and a chromium enriched subsurface layer. The chromium skin layer is about 40 microns thick.
Inventors
- 👤 Albert R. McCloskey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:16
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/12; F16C11/00; F16C11/04; F16C11/06; F16C11/0614; F16C23/00; F16C23/02; F16C23/04; F16C23/043; F16C23/045; F16C33/122; F16C2204/00; F16C2204/20; F16C2204/60; Y; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/912
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
43 words
A bearing assembly comprising a race member having a spherical surface, said surface being formed of zinc-plated metal base material having a substantially continuous chromium skin layer and a chromium enriched subsurface layer of said zinc-plated metal immediately below said chromium skin layer.
Claim 2
Dependent Claim
43 words
A bearing assembly comprising a race member having a spherical surface, said surface being formed of zinc-plated metal base material having a substantially continuous chromium skin layer and a chromium enriched subsurface layer of said zinc-plated metal immediately below said chromium skin layer.
Claim 3
Dependent Claim
67 words
The apparatus of claim 1 wherein the race member is an outer race member and the spherical surface is a concave spherical inner surface, and further comprising an inner race member movably mounted in the outer race member, said inner race member having a convex spherical outer surface conforming generally with the inner surface of the outer race member, said outer surface being formed of zinc-plated metal.
Claim 4
Dependent Claim
69 words
The apparatus of claim 1 wherein the race member is an inner race member and the spherical surface is a convex spherical outer surface, and further comprising an outer race member having a convex spherical inner surface conforming generally with the outer surface of the inner race member, said inner surface being formed of zinc-plated metal, and said inner race member being movably mounted in the outer race member.
Claim 5
Dependent Claim
38 words
The apparatus of claim 1 further comprising a shank assembly connected to the race member, said shank assembly comprising a threaded stem portion terminating in a head portion having an aperture configured to engagingly receive the race member.
Claim 6
Dependent Claim
17 words
The apparatus of claim 1 wherein the chromium skin layer has a thickness of about 40 microns.
Claim 7
Dependent Claim
19 words
The apparatus of claim 1 wherein the skin and subsurface layer has a maximum thickness of about 0.01 inches.
Claim 8
Dependent Claim
13 words
The apparatus of claim 1 wherein the metal base material is zinc-plated steel.
Claim 9
Dependent Claim
13 words
The apparatus of claim 1 wherein the metal base material is zinc-plated copper.
Claim 10
Dependent Claim
13 words
The apparatus of claim 1 wherein the metal base material is zinc-plated iron.
Claim 11
Dependent Claim
13 words
The apparatus of claim 1 wherein the metal base material is zinc-plated bronze.
Claim 12
Dependent Claim
13 words
The apparatus of claim 1 wherein the metal base material is zinc-plated aluminum.
Claim 13
Dependent Claim
84 words
A bearing assembly comprising an outer race member having a concave spherical inner surface, and an inner race member movably mounted in the outer race member, said inner race member having a convex spherical outer surface conforming generally with the inner surface of the outer race member, said inner surface and said outer surface being formed of zinc-plated metal base material having a substantially continuous chromium skin layer and a chromium enriched subsurface layer of said zinc-plated metal immediately below said chromium skin layer.
Claim 14
Dependent Claim
84 words
A bearing assembly comprising an outer race member having a concave spherical inner surface, and an inner race member movably mounted in the outer race member, said inner race member having a convex spherical outer surface conforming generally with the inner surface of the outer race member, said inner surface and said outer surface being formed of zinc-plated metal base material having a substantially continuous chromium skin layer and a chromium enriched subsurface layer of said zinc-plated metal immediately below said chromium skin layer.
Claim 15
Dependent Claim
23 words
The apparatus of claim 1 further comprising a radially extending shank connected to the race member, said shank having a threaded outer surface.
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) | 1985-06-21 | 1985-12-21 | 1986-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-21 | 1989-12-21 | 1990-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-21 | 1993-12-21 | 1994-06-22 | $7700.00 | Window Closed / Lapsed |