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Patent US3260508A successfully refreshed from Google Patents.
US3260508A
Expired / Lapsed
US
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Balancing hoist
Assignee: Individual
•
Filing: 1963-10-14
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Granted: 1966-07-12
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Expires: 1983-10-14
Abstract
No abstract record available.
Inventors
- 👤 Edgar R Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:37
CPC Classifications
B; B66; B66D; B66D3/00; B66D3/18; B66D2700/00; B66D2700/02; B66D2700/026; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6918; Y10T137/6932; Y10T137/6962; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86638
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A BALANCING HOIST COMPRISING A HOIST HOUSING, A CABLE DRUM MOUNTED IN SAID HOUSING FOR ROTATABLE AND AXIAL MOVEMENT, MEANS IN SAID HOUSING FOR ESTABLISHING AN AIR CHAMBER FOR APPLYING PRESSURE TO AN END OF SAID DRUM AND FOR MOVING SAID DRUM AXIALLY IN SAID HOUSING, SAID DRUM BEING ARRANGED TO WIND THE CABLE THEREON WHEN MOVED AXIALLY IN SAID HOUSING AWAY FROM THE AIR CHAMBER, SAID DRUM BEING ARRANGED TO UNWIND CABLE THEREFROM WHEN MOVED AXIALLY IN SAID HOUSING TOWARD SAID AIR CHAMBER, A PILOT AIR-CONTROLLED REGULATOR, PASSAGE MEANS CONNECTING SAID REGULATOR AND SAID AIR CHAMBER,
Claim 2
Dependent Claim
97 words
A BALANCING HOIST COMPRISING A HOIST HOUSING, A CABLE DRUM MOUNTED IN SAID HOUSING FOR ROTATABLE AND AXIAL MOVEMENT, MEANS IN SAID HOUSING FOR ESTABLISHING AN AIR CHAMBER FOR APPLYING PRESSURE TO AN END OF SAID DRUM AND FOR MOVING SAID DRUM AXIALLY IN SAID HOUSING, SAID DRUM BEING ARRANGED TO WIND THE CABLE THEREON WHEN MOVED AXIALLY IN SAID HOUSING AWAY FROM THE AIR CHAMBER, SAID DRUM BEING ARRANGED TO UNWIND CABLE THEREFROM WHEN MOVED AXIALLY IN SAID HOUSING TOWARD SAID AIR CHAMBER, A PILOT AIR-CONTROLLED REGULATOR, PASSAGE MEANS CONNECTING SAID REGULATOR AND SAID AIR CHAMBER,
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) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |