Patent US3143932A successfully refreshed from Google Patents.
US3143932A
Expired / Lapsed
US
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Rotary actuator
Assignee: CARTER CONTROLS Inc
•
Filing: 1961-10-16
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Granted: 1964-08-11
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Expires: 1981-10-16
Abstract
No abstract record available.
Inventors
- 👤 Robert W Lanman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:56
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/02; F15B15/06; F15B15/068; F16; F16H; F16H25/00; F16H25/18; F16H25/186; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A ROTARY ACTUATOR COMPRISING AN ELONGATED CYLINDRICAL SLEEVE, A COLLAR ROTATABLY SURROUNDING THE SLEEVE, AN ELONGATED PISTON SLIDABLE IN THE SLEEVE, FLUID PRESSURE CONNECTIONS TO THE ENDS OF THE SLEEVE TO SUPPLY AND EXHAUST FLUID TO AND FROM OPPOSITE ENDS OF THE SLEEVE TO MOVE THE PISTON AXIALLY THEREIN, THE SLEEVE AND COLLAR BEING FORMED WITH SLOTS EXTENDING GENERALLY AXIALLY THEREOF AND WHICH CROSS EACH OTHER AT AN ANGLE, THE LENGTH OF THE SLOT IN THE SLEEVE BEING LESS THAN HALF THE AXIAL LENGTH OF THE PISTON WHEREBY THE ENDS OF THE PISTON WILL NEVER CROSS THE SLOT, ONE OF THE SLOTS EXTENDING STRAIGHT AXIALLY OF THE SLEEVE AND COLLAR AND THE OTHER SLOT EXTENDING HELICALLY ABOUT THE AXIS OF THE SLEEVE AND COLLAR THROUGH A PORTION
Claim 2
Dependent Claim
127 words
A ROTARY ACTUATOR COMPRISING AN ELONGATED CYLINDRICAL SLEEVE, A COLLAR ROTATABLY SURROUNDING THE SLEEVE, AN ELONGATED PISTON SLIDABLE IN THE SLEEVE, FLUID PRESSURE CONNECTIONS TO THE ENDS OF THE SLEEVE TO SUPPLY AND EXHAUST FLUID TO AND FROM OPPOSITE ENDS OF THE SLEEVE TO MOVE THE PISTON AXIALLY THEREIN, THE SLEEVE AND COLLAR BEING FORMED WITH SLOTS EXTENDING GENERALLY AXIALLY THEREOF AND WHICH CROSS EACH OTHER AT AN ANGLE, THE LENGTH OF THE SLOT IN THE SLEEVE BEING LESS THAN HALF THE AXIAL LENGTH OF THE PISTON WHEREBY THE ENDS OF THE PISTON WILL NEVER CROSS THE SLOT, ONE OF THE SLOTS EXTENDING STRAIGHT AXIALLY OF THE SLEEVE AND COLLAR AND THE OTHER SLOT EXTENDING HELICALLY ABOUT THE AXIS OF THE SLEEVE AND COLLAR THROUGH A PORTION
References Cited (Backward Citations)
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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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |