US3638366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lapping method for metallic workpieces
Assignee: Saint Gobain Abrasives Inc
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Filing: 1969-12-03
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Granted: 1972-02-01
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Expires: 1989-12-03
Abstract
Abstract A process for providing clean lapped surfaces on metallic workpieces supported in operative relation to the working surface of a bonded abrasive lap for sliding and rotary movement relative to such working surface throughout a single continuous lapping operation including a first predetermined time period during which an abrasive slurry is supplied to the working surfaces of the lap and a second predetermined time period during which the working surface of the lap is flooded continuously with a nonabrasive cleaning fluid effective to wash clean the working surface of the lap and the lapped surfaces of the workpieces.
Inventors
- 👤 Norman M Gamache
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:47
CPC Classifications
B; B24; B24B; B24B37/00; B24B37/04; B24B37/042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
The method of producing a clean lapped surface on a workpiece with at least one surface to be finished by lapping comprising supporting a given workpiece with its surface to be lapped in operative engagement with a working surface of a given lapping element composed of bonded abrasive material, producing relative sliding movement between the given workpiece and the given lapping element, supplying an abrasive slurry to the working surface of the given lapping element only during a first predetermined period of time, and then flooding the working surface of the given lapping element with a nonabrasive cleaning fluid during a second predetermined period of time sufficient to produce a clean lapped surface on the given workpiece.
Claim 2
Independent Claim
117 words
The method of producing a clean lapped surface on a workpiece with at least one surface to be finished by lapping comprising supporting a given workpiece with its surface to be lapped in operative engagement with a working surface of a given lapping element composed of bonded abrasive material, producing relative sliding movement between the given workpiece and the given lapping element, supplying an abrasive slurry to the working surface of the given lapping element only during a first predetermined period of time, and then flooding the working surface of the given lapping element with a nonabrasive cleaning fluid during a second predetermined period of time sufficient to produce a clean lapped surface on the given workpiece.
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) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |