US3246581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air actuator
Assignee: Flo Tork Inc
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Filing: 1963-10-23
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Granted: 1966-04-19
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Expires: 1983-10-23
Abstract
No abstract record available.
Inventors
- 👤 Carr Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:11
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/02; F15B15/06; F15B15/065
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
147 words
A ROTARY FLUID ACTUATOR COMPRISING: (A) A CYLINDER, (B) A PINION ROTATABLY MOUNTED BETWEEN THE ENDS OF SAID ACTUATOR, (C) A PISTON RECIPROCALLY DISPOSED IN SAID CYLINDER BETWEEN EACH OF ITS ENDS AND SAID PINION, (D) A RACK EXTENDING BETWEEN SAID PISTONS IN MESHING ENGAGEMENT WITH SAID PINION, SAID RACK BEING OFFSET FROM THE AXIS OF SAID CYLINDER, (E) BEARING MEANS BETWEEN SAID RACK AND THE INNER WALL SURFACE OF SAID CYLINDER, SAID BEARING MEANS EXTENDING ALONG THE LENGTH OF SAID RACK A DISTANCE SUFFICIENT TO PREVENT BENDING DURING OPERATION OF SAID ACTUATOR, AND (F) MEANS CONNECTING EACH END OF SAID RACK TO THE ADJACENT PISTON ON ITS DIAMETER, (G) SAID CONNECTING MEANS INCLUDING MEANS FORMING A LOST MOTION CONNECTION WITH EACH PISTON SO THAT SAID PISTONS ARE FREE TO FLOAT FOR A LIMITED DISTANCE AND SO THAT SAID RACK IS FREELY SUPPORTED BY SAID BEARING MEANS.
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |