Patent US3158923A successfully refreshed from Google Patents.
US3158923A
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Method for making a seal and coupling assembly
Assignee: Caterpillar Inc
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Filing: 1962-04-02
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Granted: 1964-12-01
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Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 Harold L Reinsma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:17
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/32; B62D55/08; B62D55/088; B62D55/0887; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49703; Y10T29/49764; Y10T29/49771; Y10T29/49826; Y10T29/4984; Y10T29/49844; Y10T29/49863; Y10T29/4987; Y10T29/49872; Y10T29/49908; Y10T29/49909; Y10T29/49913; Y10T29/53; Y10T29/53657
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A METHOD FOR FORMING A SEAL ASSEMBLY HAVING AN ELASTIC RING DISPOSED BETWEEN INNER AND OUTER SLEEVES OF METAL COMPRISING THE STEPS OF POSITIONING THE ELASTIC RING COMPRISING AT LEAST ONE CONCAVE SURFACE FORMED THEREON BETWEEN THE INNER AND OUTER SLEEVES SO THAT THE CONCAVE SURFACE EXTENDS BETWEEN SAID SLEEVES, REDUCING THE SIZE OF THE OUTER SLEEVE TOWARD SAID INNER SLEEVE TO PLACE THE ELASTIC RING UNDER COMPRESSION AND CHANGING SAID CONCAVE SURFACE TO A SUBSTANTIALLY FLAT SURFACE.
Claim 2
Independent Claim
78 words
A METHOD FOR FORMING A SEAL ASSEMBLY HAVING AN ELASTIC RING DISPOSED BETWEEN INNER AND OUTER SLEEVES OF METAL COMPRISING THE STEPS OF POSITIONING THE ELASTIC RING COMPRISING AT LEAST ONE CONCAVE SURFACE FORMED THEREON BETWEEN THE INNER AND OUTER SLEEVES SO THAT THE CONCAVE SURFACE EXTENDS BETWEEN SAID SLEEVES, REDUCING THE SIZE OF THE OUTER SLEEVE TOWARD SAID INNER SLEEVE TO PLACE THE ELASTIC RING UNDER COMPRESSION AND CHANGING SAID CONCAVE SURFACE TO A SUBSTANTIALLY FLAT SURFACE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |