US3813828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for controlling finished thickness of planetary-lapped parts
Assignee: Westinghouse Electric Corp
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Filing: 1973-01-05
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Granted: 1974-06-04
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Expires: 1993-01-05
Abstract
Abstract A method for controlling the thickness of a planetary-lapped part prepared by a lapping apparatus having planetary carriers for containing the part which is in gear train with a sun and ring gear and in abrasive engagement with a pair of lapping plates. The method comprises measuring the forces of at least one of the gears during lapping and detecting any increases in those forces and stopping the apparatus upon the detection of said increase.
Inventors
- 👤 A Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:35
CPC Classifications
B; B24; B24B; B24B37/00; B24B37/04; B24B37/07; B24B37/08; B24B49/00; B24B49/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
78 words
A method for controlling the thickness of planetary-lapped parts wherein said parts are contained in a planetary carrier of the desired final part thickness which is in gear train with a ring and sun gear and said parts are in abrasive engagement with a pair of lapping plates, the method comprising measuring the forces of at least one of said gears during lapping, detecting any change in those forces, and stopping said gears upon detection of said change.
Claim 2
Independent Claim
78 words
A method for controlling the thickness of planetary-lapped parts wherein said parts are contained in a planetary carrier of the desired final part thickness which is in gear train with a ring and sun gear and said parts are in abrasive engagement with a pair of lapping plates, the method comprising measuring the forces of at least one of said gears during lapping, detecting any change in those forces, and stopping said gears upon detection of said change.
Claim 3
Dependent Claim
18 words
A method as set forth in claim 1 wherein the forces measured are those of the sun gear.
Claim 4
Dependent Claim
20 words
A method as set forth in claim 1 wherein the forces measured are those of the sun and ring gears.
Claim 5
Dependent Claim
20 words
A method as set forth in claim 1 wherein the measured forces comprise the torque produced by the planetary carriers.
References Cited (Backward Citations)
US2668397A
Cited
US3089292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |