US3304061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hoisting device
Assignee: Individual
•
Filing: 1965-07-23
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Granted: 1967-02-14
•
Expires: 1985-07-23
Abstract
No abstract record available.
Inventors
- 👤 Edgar C Seward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:07
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/60; B66C23/605
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
198 words
IN A MATERIAL HANDLING SYSTEM INCLUDING A BOOM, A MATERIAL HANDLING LINE HAVING A FREE END AND A FIXED END, SAID LINE BEING MOVABLY ATTACHED TO AND DEPENDING FROM OUT SAID LINE WITH RESPECT TO SAID BOOM TO RAISE OR LOWER MATERIAL ATTACHED TO SAID LINE, AN IMPROVEMENT IN SAID HOISTING MEANS WHEREIN SAID HOISTING MEANS COMPRISES: (A) A FRAME, THE FIXED END OF SAID MATERIAL HANDLING LINE BEING FIXED TO SAID FRAME; (B) A PLURALITY OF SHEAVES MOUNTED ON SAID FRAME, SAID MATERIAL HANDLING LINE BEING THREADED ABOUT SAID SHEAVES AND SAID SHEAVES BEING MOVABLE WITH RESPECT TO ONE ANOTHER IN BOTH THE HORIZONTAL AND VERTICAL DIRECTIONS; (C) MEANS FOR MOVING SAID SHEAVES WITH RESPECT TO ONE ANOTHER, THE FREE END OF SAID LINE BEING DRAWN TOWARD AND AWAY FROM SAID HOISTING MEANS AS SAID SHEAVES ARE MOVED FURTHER APART AND CLOSER TOGETHER; (D) SHOCK ABSORBER MEANS BETWEEN THE FIXED END OF SAID MATERIAL HANDLING LINE AND SAID FRAME; AND (E) MEANS FOR DRAWING SAID MATERIAL HANDLING LINE OFF OF SAID SHEAVES WHEN THE LINE IS NOT IN A CARGO LOADED STATE SO AS TO DRAW ITSELF FROM THE SHEAVES AS THE SHEAVES ARE MOVED CLOSER TOGETHER.
Claim 2
Dependent Claim
198 words
IN A MATERIAL HANDLING SYSTEM INCLUDING A BOOM, A MATERIAL HANDLING LINE HAVING A FREE END AND A FIXED END, SAID LINE BEING MOVABLY ATTACHED TO AND DEPENDING FROM OUT SAID LINE WITH RESPECT TO SAID BOOM TO RAISE OR LOWER MATERIAL ATTACHED TO SAID LINE, AN IMPROVEMENT IN SAID HOISTING MEANS WHEREIN SAID HOISTING MEANS COMPRISES: (A) A FRAME, THE FIXED END OF SAID MATERIAL HANDLING LINE BEING FIXED TO SAID FRAME; (B) A PLURALITY OF SHEAVES MOUNTED ON SAID FRAME, SAID MATERIAL HANDLING LINE BEING THREADED ABOUT SAID SHEAVES AND SAID SHEAVES BEING MOVABLE WITH RESPECT TO ONE ANOTHER IN BOTH THE HORIZONTAL AND VERTICAL DIRECTIONS; (C) MEANS FOR MOVING SAID SHEAVES WITH RESPECT TO ONE ANOTHER, THE FREE END OF SAID LINE BEING DRAWN TOWARD AND AWAY FROM SAID HOISTING MEANS AS SAID SHEAVES ARE MOVED FURTHER APART AND CLOSER TOGETHER; (D) SHOCK ABSORBER MEANS BETWEEN THE FIXED END OF SAID MATERIAL HANDLING LINE AND SAID FRAME; AND (E) MEANS FOR DRAWING SAID MATERIAL HANDLING LINE OFF OF SAID SHEAVES WHEN THE LINE IS NOT IN A CARGO LOADED STATE SO AS TO DRAW ITSELF FROM THE SHEAVES AS THE SHEAVES ARE MOVED CLOSER TOGETHER.
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |