Patent EP0392927A2 successfully refreshed from Google Patents.
US3583103A
Expired / Lapsed
US
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Method and means for linearly lapping punches
Assignee: Individual
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Filing: 1968-10-04
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Granted: 1971-06-08
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Expires: 1988-10-04
Abstract
Abstract Improved method and means for linearly lapping machine parts, as, for example, punches, by confining the surface to be lapped in a closed chamber and forcing lapping compound under pressure linearly back and forth over said surface.
Inventors
- 👤 Charles H Rystrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:20
CPC Classifications
B; B24; B24B; B24B1/00; B24B31/00; B24B31/10; B24B31/116
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
69 words
A method of pressurized lapping of a machine part which is disposed in a closed chamber filled with lapping compound comprising the steps of positioning in the closed chamber in mirrorlike disposition with respect to the machine part form means that are complementary in configuration to the machine part, and forcing the lapping compound under pressure through the closed chamber to effect linear lapping of the machine part surface.
Claim 2
Independent Claim
69 words
A method of pressurized lapping of a machine part which is disposed in a closed chamber filled with lapping compound comprising the steps of positioning in the closed chamber in mirrorlike disposition with respect to the machine part form means that are complementary in configuration to the machine part, and forcing the lapping compound under pressure through the closed chamber to effect linear lapping of the machine part surface.
Claim 3
Dependent Claim
41 words
The method of claim 1 including the step of moving the lapping compound back and forth over the surface so as to remove any amorphous skin from the surface and thereby render the surface ready for immediate use without any run-in.
Claim 4
Dependent Claim
141 words
A lapping device for effecting linear lapping of a surface of a machine part comprising a housing having a closed chamber adapted to retain a surface of a machine part therein, said chamber being filled with lapping compound, and means for moving the lapping compound under pressure over the said surface of the machine part to work same to a precise desired finish, said housing having an opening for receiving a machine part having a surface to be lapped, such surface extending into the closed chamber, pin means complementary in configuration to the machine part and arranged in mirror-image disposition with respect to the machine part to provide a smoothly merging surface with said surface of the machine part, the moving means forcing the lapping compound under pressure through the closed chamber to effect linear lapping of the machine part surface.
Claim 5
Dependent Claim
141 words
A lapping device for effecting linear lapping of a surface of a machine part comprising a housing having a closed chamber adapted to retain a surface of a machine part therein, said chamber being filled with lapping compound, and means for moving the lapping compound under pressure over the said surface of the machine part to work same to a precise desired finish, said housing having an opening for receiving a machine part having a surface to be lapped, such surface extending into the closed chamber, pin means complementary in configuration to the machine part and arranged in mirror-image disposition with respect to the machine part to provide a smoothly merging surface with said surface of the machine part, the moving means forcing the lapping compound under pressure through the closed chamber to effect linear lapping of the machine part surface.
Claim 6
Dependent Claim
31 words
A lapping device as in claim 3 wherein the moving means forces the lapping compound linearly over the said surface to be lapped to effect linear lapping of the said surface.
Claim 7
Dependent Claim
36 words
A lapping device as in claim 3 wherein the moving means comprises piston means adapted to be reciprocated so as to move the lapping compound back and forth over the said surface of the machine part.
Claim 8
Dependent Claim
16 words
A lapping device as in claim 3 wherein said smoothly merging surface is the exterior 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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |