US3272364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination clamp-grab attachment for lift truck
Assignee: Doosan Bobcat North America Inc
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Filing: 1963-12-13
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Granted: 1966-09-13
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Expires: 1983-12-13
Abstract
No abstract record available.
Inventors
- 👤 Kenneth H Mindrum
- 👤 James H Newhouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:39
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/12; B66F9/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
159 words
AN ATTACHMENT FOR LIFT TRUCKS HAVING A FIRST EXTENSIBLE MAST ASSEMBLY LOCATED ADJACENT ONE END THEREOF, COMPRISING A SECOND EXTENSIBLE MAST ASSEMBLY MOUNTED FOR ELEVATING MOVEMENT IN THE FIRST SAID ASSEMBLY, FIRST LOAD ENGAGING MEANS MOUNTED AT THE LOWER END OF THE SECOND MAST ASSEMBLY, SECOND LOAD ENGAGING MEANS MOUNTED NEAR THE UPPER END OF SAID SECOND MAST ASSEMBLY FOR MOVEMENT VERTICALLY RELATIVE TOTHE FIRST LOAD ENGAGING MEANS, AND MOTOR MEANS MOUNTED IN SAID SECOND MAST ASSEMBLY FOR RAISING AND LOWERING THE SECOND LOAD ENGAGING MEANS RELATIVE TO THE FIRST LOAD ENGAGING MEANS, MEANS LOCATING SAID SECOND LOAD ENGAGING MEANS NORMALLY IN AN INOPERATIVE POSITION EXTENDING FORWARDLY AND DIAGONALLY RELATIVE TO THE FIRST LOAD ENGAGING MEANS, SAID SECOND LOAD ENGAGING MEANS BEING ACTUATABLE PIVOTALLY FROM SAID INOPERATIVE POSITION TO A FIRST OPERATIVE POSITION IN WHICH SAID FIRST AND SECOND LOAD ENGAGING MEANS COOPERATE TO CLAMP A LOAD THEREBETWEEN, AND SAID SECOND LOAD ENGAGING MEANS BEING ACTUATABLE PIVOTALLY FROM SAID
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |