US4240682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing race
Assignee: Timken US LLC
•
Filing: 1979-03-15
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Granted: 1980-12-23
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Expires: 1999-03-15
Abstract
Abstract At least one groove extends longitudinally across the race. The race includes a relatively soft metal core with its inner and outer surfaces being carburized. The sides of the groove are also carburized and a carburized portion extends radially from the bottom of the groove entirely across the race.
Inventors
- 👤 Carl F. Benson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:56
CPC Classifications
B; B23; B23D; B23D31/00; B23D31/002; B23D31/003; F; F16; F16C; F16C33/00; F16C33/30; F16C33/58; F16C33/60; F16C33/64
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
144 words
A bearing race comprising: an annular metal member having at least one groove extending from one longitudinal end of the annular metal member to the other longitudinal end of the annular metal member, said annular metal member having a relatively soft metal core with a first carburized portion extending inwardly from the outer surface of the metal annular member, a second carburized portion extending outwardly from the inner surface of the annular metal member substantially the same thickness as the first carburized portion, carburized portions extending from the sides of said groove and a carburized portion extending radially from the bottom of said groove entirely through the annular metal member, said carburized portion of the annular metal member radially extending from the bottom of the groove entirely through the annular metal member being a maximum of twice the thickness of said first carburized portion.
Claim 2
Dependent Claim
144 words
A bearing race comprising: an annular metal member having at least one groove extending from one longitudinal end of the annular metal member to the other longitudinal end of the annular metal member, said annular metal member having a relatively soft metal core with a first carburized portion extending inwardly from the outer surface of the metal annular member, a second carburized portion extending outwardly from the inner surface of the annular metal member substantially the same thickness as the first carburized portion, carburized portions extending from the sides of said groove and a carburized portion extending radially from the bottom of said groove entirely through the annular metal member, said carburized portion of the annular metal member radially extending from the bottom of the groove entirely through the annular metal member being a maximum of twice the thickness of said first carburized portion.
Claim 3
Dependent Claim
33 words
A bearing race in accordance with claim 1 wherein: the carburized portion radially extending from the bottom of the groove entirely through the annular metal member has a maximum thickness of 0.024 inches.
Claim 4
Dependent Claim
49 words
A bearing race in accordance with claim 2 wherein: there are two diametrically spaced grooves each groove extending from one longitudinal end of the annular metal member to the other longitudinal end of the annular metal member; and a carburized portion radially extends from the bottom of each groove.
Claim 5
Dependent Claim
104 words
A bearing race comprising: an annular metal member having at least one longitudinally extending groove, said annular metal member having a relatively soft metal core with a first carburized portion extending inwardly from the outer surface of the metal annular member, a second carburized portion extending outwardly from the inner surface of the annular metal member substantially the same thickness as the first carburized portion, carburized portions extending from the sides of said groove, and a carburized portion extending radially from the bottom of said groove entirely through the annular metal member having a maximum thickness twice the thickness of said first carburized portion.
Claim 6
Dependent Claim
104 words
A bearing race comprising: an annular metal member having at least one longitudinally extending groove, said annular metal member having a relatively soft metal core with a first carburized portion extending inwardly from the outer surface of the metal annular member, a second carburized portion extending outwardly from the inner surface of the annular metal member substantially the same thickness as the first carburized portion, carburized portions extending from the sides of said groove, and a carburized portion extending radially from the bottom of said groove entirely through the annular metal member having a maximum thickness twice the thickness of said first carburized portion.
Claim 7
Dependent Claim
33 words
A bearing race in accordance with claim 4 wherein the carburized portion extending radially from the bottom of said groove entirely through the annular metal member has a maximum thickness of 0.024 inches.
References Cited (Backward Citations)
US1577480A
Cited
US1675728A
Cited
US2648578A
Cited
US2624645A
Cited
US3275389A
Cited
US3677032A
Cited
GB1441768A
Cited
DE2723928A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-23 | 1984-06-23 | 1984-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-23 | 1988-06-23 | 1988-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-23 | 1992-06-23 | 1992-12-23 | $7700.00 | Window Closed / Lapsed |