Patent US4521919A successfully refreshed from Google Patents.
Patent US3196956A successfully refreshed from Google Patents.
US3196956A
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Digger tooth
Assignee: American Brake Shoe Co
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Filing: 1962-12-21
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Granted: 1965-07-27
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Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Ratkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:25
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/28; E02F9/2875; A; A01; A01B; A01B15/00; A01B15/02; A01B15/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN A DIGGER TOOTH, A POINT HAVING A BLADE END AND A SOCKET END, SAID SOCKET END HAVING A HOLLOW INTERIOR AND A ROUNDED EXTERIOR, THE INTERIOR OF THE SOCKET INCLUDING A PLURALITY OF OPPOSED FLAT WALLS THE PLANES OF WHICH WHEN PROJECTED INTERSECT AT RIGHT ANGLES, SAID INTERSECTIONS BEING OCCUPIED AND SAID WALLS BEING SEPARATED BY INWARDLY DIRECTED SUBSTANTIALLY AT RIGHT ENGAGE PRESENTING A PAIR OF SURFACES SUBSTANTIALLY AT RIGHT ANGLES TO THE ADJACENT ONES OF SAID WALLS AND ADAPTED TO ENGAGE COMPLEMENTAL SURFACES OF AN ADAPTED AND WHICH AFFORD INCREASED WALL THICKNESS OF SAID INTERSECTIONS, SAID OPPOSED FLAT SURFACES BEING INWARDLY CONVERGING TO MAINTAIN THE WALL THICKNESS WITH SAID ROUNDED EXTERIOR.
Claim 2
Dependent Claim
113 words
IN A DIGGER TOOTH, A POINT HAVING A BLADE END AND A SOCKET END, SAID SOCKET END HAVING A HOLLOW INTERIOR AND A ROUNDED EXTERIOR, THE INTERIOR OF THE SOCKET INCLUDING A PLURALITY OF OPPOSED FLAT WALLS THE PLANES OF WHICH WHEN PROJECTED INTERSECT AT RIGHT ANGLES, SAID INTERSECTIONS BEING OCCUPIED AND SAID WALLS BEING SEPARATED BY INWARDLY DIRECTED SUBSTANTIALLY AT RIGHT ENGAGE PRESENTING A PAIR OF SURFACES SUBSTANTIALLY AT RIGHT ANGLES TO THE ADJACENT ONES OF SAID WALLS AND ADAPTED TO ENGAGE COMPLEMENTAL SURFACES OF AN ADAPTED AND WHICH AFFORD INCREASED WALL THICKNESS OF SAID INTERSECTIONS, SAID OPPOSED FLAT SURFACES BEING INWARDLY CONVERGING TO MAINTAIN THE WALL THICKNESS WITH SAID ROUNDED EXTERIOR.
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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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |