US3109248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bucket grader attachment
Assignee: Thew Shovel Co
•
Filing: 1961-11-15
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Granted: 1963-11-05
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Expires: 1981-11-15
Abstract
No abstract record available.
Inventors
- 👤 Henry J Vos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:20
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40; E02F3/401
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
139 words
AN EARTH MOVING BUCKET FOR A TRACTOR LOADER COMPRISING A BACK WALL AND A BOTTOM WALL, SAID BOTTOM WALL TERMINATING IN A DIGGING EDGE, END WALLS CLOSING THE ENDS OF SAID BUCKET TO FORM A V-SHAPE TROUGH-LIKE CONTAINER; A VSHAPE HOLLOW HEEL SECURED TO THE BACK OF SAID BUCKET AT THE JUNCTURE BETWEEN SAID BACK WALL AND SAID BOTTOM WALL AND EXTENDING THE LENGTH OF SAID BUCKET BETWEEN SAID END WALLS, SAID V-SHAPE HOLLOW HEEL COMPRISING A SUBSTANTIALLY VERTICALLY EXTENDING BACK PLATE SECURED ALONG ITS TOP EDGE TO SAID BACK WALL, AND A SLIGHTLY UPWARDLY INCLINED BOTTOM PLATE SECURED ALONG ITS BOTTOM EDGE TO THE BOTTOM EDGE OF SAID BACK PLATE TO FORM THE APEX OF SAID HEEL AND SECURED ALONG ITS TOP EDGE TO SAID BOTTOM WALL, SAID BACK PLATE THUS EXTENDING DOWNWARDLY AT THE REAR OF SAID
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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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |