US3349508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tooth with t-shaped shank
Assignee: Individual
•
Filing: 1965-09-07
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Granted: 1967-10-31
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Expires: 1985-09-07
Abstract
No abstract record available.
Inventors
- 👤 Gerald A Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:49
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/28; E02F9/2808; E02F9/2816; E02F9/2833; E02F9/2841
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN COMBINATION, A TOOTH HAVING DISTAL AND PROXIMAL PORTIONS AND A TOOTH HOLDER SHAPED TO RECEIVE SAID PROXIMAL PORTION, SAID PROXIMAL PORTION BEING T-SHAPED IN CROSS-SECTION HAVING AN OUTWARD PROJECTING RIB AND LATERALLY EXTENDING FEET, SAID DISTAL PORTION HAVING A BROAD BLADE EXTENDING TO THE FORWARD END OF SAID TOOTH AND HAVING A BOTTOM SURFACE MERGING WITH THE BOTTOMS OF SAID FEET AND GENERALLY EXTENDING AS A FORWARD PROJECTION OF SAID FEET, SAID TOOTH HOLDER FORMED WITH A SOCKET SUBSTANTIALLY COMPLEMENTARY TO SAID PROXIMAL PORTION, THE FORWARD END OF SAID TOOTH BEING SUBSTANTIALLY LONGITUDINALLY FORWARD OF SAID FEED, WHEREBY THE REACTION TO DIGGING FORCE IMPARTED TO SAID FORWARD END IS TRANSMITTED THROUGH SAID TOOTH IN LINE WITH SAID FEET TO SAID TOOTH HOLDER.
Claim 2
Dependent Claim
123 words
IN COMBINATION, A TOOTH HAVING DISTAL AND PROXIMAL PORTIONS AND A TOOTH HOLDER SHAPED TO RECEIVE SAID PROXIMAL PORTION, SAID PROXIMAL PORTION BEING T-SHAPED IN CROSS-SECTION HAVING AN OUTWARD PROJECTING RIB AND LATERALLY EXTENDING FEET, SAID DISTAL PORTION HAVING A BROAD BLADE EXTENDING TO THE FORWARD END OF SAID TOOTH AND HAVING A BOTTOM SURFACE MERGING WITH THE BOTTOMS OF SAID FEET AND GENERALLY EXTENDING AS A FORWARD PROJECTION OF SAID FEET, SAID TOOTH HOLDER FORMED WITH A SOCKET SUBSTANTIALLY COMPLEMENTARY TO SAID PROXIMAL PORTION, THE FORWARD END OF SAID TOOTH BEING SUBSTANTIALLY LONGITUDINALLY FORWARD OF SAID FEED, WHEREBY THE REACTION TO DIGGING FORCE IMPARTED TO SAID FORWARD END IS TRANSMITTED THROUGH SAID TOOTH IN LINE WITH SAID FEET TO SAID TOOTH HOLDER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |