US3294369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed drives
Assignee: The General Electric Company PLC
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Filing: 1965-05-10
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Granted: 1966-12-27
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Expires: 1985-05-10
Abstract
No abstract record available.
Inventors
- 👤 Butler Alan Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:01
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/4157; B; B66; B66D; B66D1/00; B66D1/02; B66D1/08; F16H61/4078; F16H61/4096; F16H61/46; F16H61/472; B66D2700/00; B66D2700/01; B66D2700/0125; B66D2700/0133
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A WINCH ARRANGEMENT COMPRISING A FIXED SUPPORT, A WINCH DRUM MOUNTED ON THE FIXED SUPPORT, A SUPPORT CABLE WOUND ON SAID WINCH DRUM AND CONNECTABLE TO A LOAD MEMBER WHICH MAY FLUCTATE FROM TIME TO TIME, AND A HYDRAULIC FLUID CIRCUIT FOR CONTROLLING THE WINCH DRUM, SAID HYDRAULIC FLUID CIRCUIT INCLUDING AT LEAST ONE DRIVE ASSEMBLY WHICH COMPRISES A HYDRAULIC MOTOR UNIT HAVING A PAIR OF RELATIVELY ROTATABLE MEMBERS AND A HYDRAULIC PUMP UNIT ALSO HAVING A PAIR OF RELATIVELY ROTATABLE MEMBERS, ONE MEMBER OF ONE UNIT BEING CONNECTED TO ONE MEMBER OF THE OTHER UNIT AND THE OTHER MEMBERS OF THE UNITS BEING CONNECTED BETWEEN THE FIXED SUPPORT AND THE WINCH DRUM SO THAT IN OPERATION OF THE HYDRAULIC FLUID CIRCUIT, THE MOTOR UNIT PROVIDES A SUBSTANTIALLY CONSTANT TORQUE TO SAID DRUM, AND ANY POWER IN EXCESS OF THAT REQUIRED TO PROVIDE SAID SUBSTANTIALLY CONSTANT TORQUE TO THE DRUM IS USED TO DRIVE THE HYDRAULIC PUMP.
Claim 2
Dependent Claim
157 words
A WINCH ARRANGEMENT COMPRISING A FIXED SUPPORT, A WINCH DRUM MOUNTED ON THE FIXED SUPPORT, A SUPPORT CABLE WOUND ON SAID WINCH DRUM AND CONNECTABLE TO A LOAD MEMBER WHICH MAY FLUCTATE FROM TIME TO TIME, AND A HYDRAULIC FLUID CIRCUIT FOR CONTROLLING THE WINCH DRUM, SAID HYDRAULIC FLUID CIRCUIT INCLUDING AT LEAST ONE DRIVE ASSEMBLY WHICH COMPRISES A HYDRAULIC MOTOR UNIT HAVING A PAIR OF RELATIVELY ROTATABLE MEMBERS AND A HYDRAULIC PUMP UNIT ALSO HAVING A PAIR OF RELATIVELY ROTATABLE MEMBERS, ONE MEMBER OF ONE UNIT BEING CONNECTED TO ONE MEMBER OF THE OTHER UNIT AND THE OTHER MEMBERS OF THE UNITS BEING CONNECTED BETWEEN THE FIXED SUPPORT AND THE WINCH DRUM SO THAT IN OPERATION OF THE HYDRAULIC FLUID CIRCUIT, THE MOTOR UNIT PROVIDES A SUBSTANTIALLY CONSTANT TORQUE TO SAID DRUM, AND ANY POWER IN EXCESS OF THAT REQUIRED TO PROVIDE SAID SUBSTANTIALLY CONSTANT TORQUE TO THE DRUM IS USED TO DRIVE THE HYDRAULIC PUMP.
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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |