Patent US3188756A successfully refreshed from Google Patents.
US3188756A
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Digging tooth with resilient plug in rearwardly extending shank
Assignee: Caterpillar Global Mining LLC
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Filing: 1962-12-17
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Granted: 1965-06-15
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Expires: 1982-12-17
Abstract
No abstract record available.
Inventors
- 👤 Baer Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:36
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/28; E02F9/2808; E02F9/2816; E02F9/2833; E02F9/2841; F; F16; F16B; F16B2200/00; F16B2200/10; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/70; Y10T403/7018; Y10T403/7075; Y10T403/7077; Y10T403/7079; Y10T403/7086
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
103 words
IN AN EXCAVATOIR TOOTH FOR USE WITH A TOOTH RECEIVING BASE, THE COMBINATION COMPRISIING: A WEDGE SHAPED CUTTING PORTION; A SEATING ABUTMENT AT THE REAR OF SAID WEDGE SHAPED PORTION; A SHANK AT THE REAR OF SAID TOOTH AND HAVING A KEY EXTENDING TRANSVERSELY THERETHROUGH; AND A RESILIENT MEMBER POSITIONED IN SAID KEYWAY ALONG ONE SIDE THEREOF WHICH IS OF A MATERIAL SOFTER THAN THE OTHER PARTS OF SAID TOOTH AND WHICH HAS EXPOSED ENDS AT THE OPENINGS OF THE KEYWAY; SAID RESILIENT MEMBER ALSO BEING THICKER AT ITS ENDS THAN AT ITS CENTER, AND SAID KEYWAY BEING CONTOURED TO MATCH SAID MEMBER.
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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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |