US3090244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary actuator
Assignee: Motors Liquidation Co
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Filing: 1960-08-15
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Granted: 1963-05-21
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Expires: 1980-08-15
Abstract
No abstract record available.
Inventors
- 👤 James E Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:58
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/02; F15B15/06; F15B15/068; F16; F16H; F16H25/00; F16H25/18; F16H25/20; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18592; Y10T74/18664; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19721
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A ROTARY ACTUATOR INCLUDING, A CYLINDER, A SLEEVE PISTON DISPOSED IN SAID CYLINDER CAPABLE OF FLUID PRESSURE ACTUATION IN BOTH DIRECTIONS, A REACTION MEMBER DISPOSED WITHIN SAID CYLINDER AND RESTRAINED AGAINST ROTATION RELATIVE THERETO, A ROTARY MEMBER DISPOSED WITHIN SAID CYLINDER AND SUPPORTED FOR ROTATION RELATIVE THERETO, SAID MEMBERS HAVING EXTERNAL HELICAL MEANS OF DIFFERENT HANDS OR LEADS, A PAIR OF SPACED ELEMENTS CARRIED BY SAID SLEEVE PISTON HAVING INTERNAL HELICAL MEANS MATING WITH THE EXTERNAL HELICAL MEANS OF SAID MEMBERS WHEREBY RECIPROCATION OF THE SLEEVE PISTON IMPARTS ROTATION TO SAID ROTARY MEMBER, AND A TUBULAR MEMBER INTERLOCKED WITH SAID ELEMENTS AND CARRIED BY SAID SLEEVE PISTON AND SUPPORTING THE TORSION LOADS BETWEEN THE TWO ELEMENTS DURING RECIPROCATION OF SAID SLEEVE PISTON.
Claim 2
Dependent Claim
122 words
A ROTARY ACTUATOR INCLUDING, A CYLINDER, A SLEEVE PISTON DISPOSED IN SAID CYLINDER CAPABLE OF FLUID PRESSURE ACTUATION IN BOTH DIRECTIONS, A REACTION MEMBER DISPOSED WITHIN SAID CYLINDER AND RESTRAINED AGAINST ROTATION RELATIVE THERETO, A ROTARY MEMBER DISPOSED WITHIN SAID CYLINDER AND SUPPORTED FOR ROTATION RELATIVE THERETO, SAID MEMBERS HAVING EXTERNAL HELICAL MEANS OF DIFFERENT HANDS OR LEADS, A PAIR OF SPACED ELEMENTS CARRIED BY SAID SLEEVE PISTON HAVING INTERNAL HELICAL MEANS MATING WITH THE EXTERNAL HELICAL MEANS OF SAID MEMBERS WHEREBY RECIPROCATION OF THE SLEEVE PISTON IMPARTS ROTATION TO SAID ROTARY MEMBER, AND A TUBULAR MEMBER INTERLOCKED WITH SAID ELEMENTS AND CARRIED BY SAID SLEEVE PISTON AND SUPPORTING THE TORSION LOADS BETWEEN THE TWO ELEMENTS DURING RECIPROCATION OF SAID SLEEVE PISTON.
References Cited (Backward Citations)
US2944431A
Cited
US2945387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |