Patent US3292976A successfully refreshed from Google Patents.
US3292976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Work member for a percussive tool
Assignee: Individual
•
Filing: 1962-07-09
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Granted: 1966-12-20
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Expires: 1982-07-09
Abstract
No abstract record available.
Inventors
- 👤 Leavell Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:12
CPC Classifications
E; E01; E01C; E01C23/00; E01C23/06; E01C23/12; E01C23/122; E01C23/124
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
A WORK MEMBER FOR USE WITH A PAVING BREAKER HAVING A RECIPROCABLE HAMMER-PISTON ADAPTED TO REPETITIVELY DELIVER RELATIVELY HIGH-VALUED IMPACT FORCES TO SAID WORK MEMBER IN THE DEMOLITION OF WORK MATERIAL, COMPRISING A SHANK EQUIPPED AT ONE END THEREOF WITH AN INTEGRAL POINT AND AT ITS OTHER END WITH AN INTEGRAL STEM, SAID POINT HAVING A GENERALLY HEMISPHERICAL CONFIGURATION DEFINING THE MATERIAL-ENGAGING SURFACE THEREOF, SAID STEM DEFINING AN IMPACT-RECEIVING ELEMENT FOR TRANSMISSION THERETO OF SUCH IMPACT FORCES FROM SUCH HAMMER-PISTON, AND SAID SHANK HAVING A GENERALLY TAPERED CONFIGURATION ENLARGING SIGNFICANTLY IN CROSS SECTION TOWARD SAID STEM FROM ITS SMALLEST CROSS SECTION ADJACENT SAID POINT.
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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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |