Patent US1558980A successfully refreshed from Google Patents.
Patent US3623247A successfully refreshed from Google Patents.
US3623247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High strength digging tooth
Assignee: Caterpillar Inc
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Filing: 1970-01-26
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Granted: 1971-11-30
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Expires: 1990-01-26
Abstract
Abstract A REPLACEABLE TIP OF A DIGGING TOOTH FOR EARTHMOVING EQUIPMENT OR THE LIKE HAS A SOCKET CAVITY INTO WHICH A TOOTHLIKE SUPPORT IS RECEIVED, THE TIP BEING RETAINED ON THE SUPPORT BY A TRANSVERSE PIN. THE POSSIBILITY OF BREAKAGE OF THE TIP UNDER SEVERE LOAD FORCES IS REDUCED BY RECESSING CENTRAL PORTION OF THE CONTACTING SURFACES OF THE TIP OR SUPPORT MEANS WITHIN THE CAVITY THEREBY ASSURING THAT STRESSES ARE DIRECTED TO THE RELATIVELY HIGH STRENGTH SIDE REGIONS OF THE TIP.
Inventors
- 👤 Visvaldis A Stepe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:26
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/28; E02F9/2808; E02F9/2816; E02F9/2833
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |