Patent US3248087A successfully refreshed from Google Patents.
US3248087A
Expired / Lapsed
US
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Cable-type hoist
Assignee: GRAFTON PRODUCTS Inc
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Filing: 1964-01-24
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Granted: 1966-04-26
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Expires: 1984-01-24
Abstract
No abstract record available.
Inventors
- 👤 Roland C Hallen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:57
CPC Classifications
B; B66; B66D; B66D3/00; B66D3/12; B66D3/14; B66D1/00; B66D1/28; B66D1/36; B66D1/365
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A HOIST, COMPRISING (A) A MAIN FRAME, (B) A DRUM ROTATABLY MOUNTED ON THE FRAME, (C) A TOOTHED RATCHET WHEEL CONNECTED TO THE DRUM, (D) OPERATING MEANS MOUNTED ON THE FRAME, INCLUDING A LOCKING PAWL, AN ACTUATING PAWL, AND A HANDLE FOR THE ACTUATING PAWL, (E) A CABLE CLAMP IN THE FORM OF A RESILIENT SHEET FORMMED WITH A GENERALLY U-SHAPED CROSS-SECTION FASTENED AT ITS CENTRAL PORTION TO THE MAIN FRAME WITH ONE FREE PORTION PRESSING AGAINST THE OUTERMOST LAYER OF CABLE, (F) A BLOCK MOUNTED ON THE OTHER FREE PORTION OF THE CLAMP, THE BLOCK HAVING A KEYWAY EXTENDING PARALLEL TO THE AXIS OF THE DRUM, (G) A SLIDE WITH A GUIDE LOOP CARRIED IN THE KEYWAY FOR SLIDING MOVEMENT ADJACENT THE DRUM, AND (H) MEANS FOR ADJUSTING THE FRICTION BETWEEN THE SLIDE AND THE KEYWAY.
Claim 2
Dependent Claim
137 words
A HOIST, COMPRISING (A) A MAIN FRAME, (B) A DRUM ROTATABLY MOUNTED ON THE FRAME, (C) A TOOTHED RATCHET WHEEL CONNECTED TO THE DRUM, (D) OPERATING MEANS MOUNTED ON THE FRAME, INCLUDING A LOCKING PAWL, AN ACTUATING PAWL, AND A HANDLE FOR THE ACTUATING PAWL, (E) A CABLE CLAMP IN THE FORM OF A RESILIENT SHEET FORMMED WITH A GENERALLY U-SHAPED CROSS-SECTION FASTENED AT ITS CENTRAL PORTION TO THE MAIN FRAME WITH ONE FREE PORTION PRESSING AGAINST THE OUTERMOST LAYER OF CABLE, (F) A BLOCK MOUNTED ON THE OTHER FREE PORTION OF THE CLAMP, THE BLOCK HAVING A KEYWAY EXTENDING PARALLEL TO THE AXIS OF THE DRUM, (G) A SLIDE WITH A GUIDE LOOP CARRIED IN THE KEYWAY FOR SLIDING MOVEMENT ADJACENT THE DRUM, AND (H) MEANS FOR ADJUSTING THE FRICTION BETWEEN THE SLIDE AND THE KEYWAY.
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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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |