Patent US3121371A successfully refreshed from Google Patents.
US3121371A
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Power translator
Assignee: GRAHAM ENGINEERING Co Inc
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Filing: 1961-05-18
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Granted: 1964-02-18
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Expires: 1981-05-18
Abstract
No abstract record available.
Inventors
- 👤 Charles H Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:22
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/08; F15B15/084; F15B7/00; F15B7/005; F15B7/06; F15B7/08; Y; Y10; Y10S; Y10S92/00; Y10S92/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
226 words
A ROTORY ACTUATOR COMPRISING: (A) A POWER CYLINDER; (B) A POWER PISTON FLUID-TIGHTLY MOVABLE IN SAID POWER CYLINDER; (C) A SEALING CYLINDER OF SUBSTANTIALLY SMALLER INTERNAL DIAMETER THAN SAID POWER CYLINDER; (D) A SEALING PISTON FLUID-TIGHTLY MOVABLE IN SAID SEALING CYLINDER; (E) A PAIR OF CHAMBERS, EACH CHAMBER INCLUDING A CYLINDER COUPLING PLATE HAVING A FIRST CYLINDRICAL BORE DIMENSIONED FOR SLIDINGLY RECEIVING ONE EXTERNAL END PORTION OF SAID POWER CYLINDER AND AN OUTWARDLY FACING SHOULDER IN SAID FIRST BORE FOR ENGAGING THE END FACE OF THE RECEIVING POWER CYLINDER END PORTION AND HAVING A SECOND CYLINDRICAL BORE DIMENSIONED FOR SLIDINGLY RECEIVING ONE EXTERNAL END PORTION OF SAID SEALING CYLINDER AND AN OUTWARDLY FACING SHOULDER IN SAID SECOND BORE FOR ENGAGING THE END FACE OF THE RECEIVED SEALING CYLINDER END PORTION; (F) CLAMPING MEANS ARRANGED FOR TIGHTLY CLAMPING SAID CHAMBERS ACROSS OPPOSITE END PORTIONS OF SAID CYLINDERS; (G) RESILIENT SEAL MEANS INTERPOSED BETWEEN THE INNER AND OUTER PERIPHERAL SURFACES OF SAID BORES AND CYLINDER END PORTIONS TO ESTABLISH A FLUID-TIGHT SEAL THEREBETWEEN; (H) A SPROCKET ROTATABLY MOUNTED IN EACH CHAMBER; (I) CHAIN MEANS MOUNTED ON EACH OF SAID SPROCKETS AND RESPECTIVELY INTERCONNECTING ADJACENT ENDS OF SAID PISTONS; AND (J) A FLUID PRESSURE SYSTEM COUPLED TO AT LEAST ONE OF SAID CHAMBERS TO PRESSURIZE SAID CHAMBER TO THEREBY ACTUATE SAID POWER PISTON TO MOVE IN A DOWNSTREAM DIRECTION.
Claim 2
Dependent Claim
226 words
A ROTORY ACTUATOR COMPRISING: (A) A POWER CYLINDER; (B) A POWER PISTON FLUID-TIGHTLY MOVABLE IN SAID POWER CYLINDER; (C) A SEALING CYLINDER OF SUBSTANTIALLY SMALLER INTERNAL DIAMETER THAN SAID POWER CYLINDER; (D) A SEALING PISTON FLUID-TIGHTLY MOVABLE IN SAID SEALING CYLINDER; (E) A PAIR OF CHAMBERS, EACH CHAMBER INCLUDING A CYLINDER COUPLING PLATE HAVING A FIRST CYLINDRICAL BORE DIMENSIONED FOR SLIDINGLY RECEIVING ONE EXTERNAL END PORTION OF SAID POWER CYLINDER AND AN OUTWARDLY FACING SHOULDER IN SAID FIRST BORE FOR ENGAGING THE END FACE OF THE RECEIVING POWER CYLINDER END PORTION AND HAVING A SECOND CYLINDRICAL BORE DIMENSIONED FOR SLIDINGLY RECEIVING ONE EXTERNAL END PORTION OF SAID SEALING CYLINDER AND AN OUTWARDLY FACING SHOULDER IN SAID SECOND BORE FOR ENGAGING THE END FACE OF THE RECEIVED SEALING CYLINDER END PORTION; (F) CLAMPING MEANS ARRANGED FOR TIGHTLY CLAMPING SAID CHAMBERS ACROSS OPPOSITE END PORTIONS OF SAID CYLINDERS; (G) RESILIENT SEAL MEANS INTERPOSED BETWEEN THE INNER AND OUTER PERIPHERAL SURFACES OF SAID BORES AND CYLINDER END PORTIONS TO ESTABLISH A FLUID-TIGHT SEAL THEREBETWEEN; (H) A SPROCKET ROTATABLY MOUNTED IN EACH CHAMBER; (I) CHAIN MEANS MOUNTED ON EACH OF SAID SPROCKETS AND RESPECTIVELY INTERCONNECTING ADJACENT ENDS OF SAID PISTONS; AND (J) A FLUID PRESSURE SYSTEM COUPLED TO AT LEAST ONE OF SAID CHAMBERS TO PRESSURIZE SAID CHAMBER TO THEREBY ACTUATE SAID POWER PISTON TO MOVE IN A DOWNSTREAM DIRECTION.
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) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |