Patent US3097572A successfully refreshed from Google Patents.
US3097572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servo clutch
Assignee: Individual
•
Filing: 1962-02-19
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Granted: 1963-07-16
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Expires: 1982-02-19
Abstract
No abstract record available.
Inventors
- 👤 Robert L Macy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:05
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/08; F15B15/14; F15B15/1409; B; B64; B64C; B64C13/00; F15B13/00; F15B13/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
216 words
A SERVO CLUTCH FOR LONGITUDINAL DISPLACEMENT OF A ROD, SAID SERVO CLUTCH COMPRISING: A CYLINDER COAXIALLY RECEIVING SAID ROD THROUGH OPPOSITE ENDS OF SAID CYLINDER, A SLEEVE LOOSELY AND SLIDABLY POSITIONED ABOUT SAID ROD WITHIN SAID CYLINDER, A FIRST PISTON SLIDABLY POSITIONED WITHIN SAID CYLINDER ABOUT SAID SLEEVE AND IN SLIDABLE SEALED ENGAGEMENT WITH SAID SLEEVE, A FIRST CASING ATTACHED TO AND EXTENDING FROM SAID FIRST PISTON ABOUT SAID SLEEVE AND EXTENDING THROUGH ONE END OF SAID CYLINDER, SEALING MEANS SLIDABLY RECEIVING SAID FIRST CASING AT ONE END OF SAID CYLINDER, A SECOND PISTON SLIDABLY POSITIONED ABOUT SAID SLEEVE AND IN SEALING CONTACT THEREWITH WITHIN SAID CYLINDER BETWEEN SAID FIRST PISTON AND THE OTHER END OF SAID CYLINDER, A SECOND CASING ATTACHED TO AND EXTENDING FROM SAID SECOND PISTON ABOUT SAID SLEEVE AND EXTENDING THROUGH SAID OTHER END OF SAID CYLINDER, SEALING MEANS SLIDABLY RECEIVING SAID SECOND CASING AT SAID OTHER END OF SAID CYLINDER, A FIRST ORIFICE COMMUNICATING SAID FIRST END OF SAID CYLINDER WITH A FLUID SOURCE, A SECOND ORIFICE COMMUNICATING SAID OTHER END OF SAID CYLINDER WITH A FLUID SOURCE, A THIRD ORIFICE COMMUNICATING THE INTERIOR OF SAID CYLINDER BETWEEN SAID PISTONS WITH A FLUID SOURCE, AND CIRCUMFERENTIAL PROJECTIONS ATTACHED TO SAID ROD AT POSITIONS EXTERIORLY SPACED FROM SAID ENDS OF SAID CYLINDER.
Claim 2
Dependent Claim
216 words
A SERVO CLUTCH FOR LONGITUDINAL DISPLACEMENT OF A ROD, SAID SERVO CLUTCH COMPRISING: A CYLINDER COAXIALLY RECEIVING SAID ROD THROUGH OPPOSITE ENDS OF SAID CYLINDER, A SLEEVE LOOSELY AND SLIDABLY POSITIONED ABOUT SAID ROD WITHIN SAID CYLINDER, A FIRST PISTON SLIDABLY POSITIONED WITHIN SAID CYLINDER ABOUT SAID SLEEVE AND IN SLIDABLE SEALED ENGAGEMENT WITH SAID SLEEVE, A FIRST CASING ATTACHED TO AND EXTENDING FROM SAID FIRST PISTON ABOUT SAID SLEEVE AND EXTENDING THROUGH ONE END OF SAID CYLINDER, SEALING MEANS SLIDABLY RECEIVING SAID FIRST CASING AT ONE END OF SAID CYLINDER, A SECOND PISTON SLIDABLY POSITIONED ABOUT SAID SLEEVE AND IN SEALING CONTACT THEREWITH WITHIN SAID CYLINDER BETWEEN SAID FIRST PISTON AND THE OTHER END OF SAID CYLINDER, A SECOND CASING ATTACHED TO AND EXTENDING FROM SAID SECOND PISTON ABOUT SAID SLEEVE AND EXTENDING THROUGH SAID OTHER END OF SAID CYLINDER, SEALING MEANS SLIDABLY RECEIVING SAID SECOND CASING AT SAID OTHER END OF SAID CYLINDER, A FIRST ORIFICE COMMUNICATING SAID FIRST END OF SAID CYLINDER WITH A FLUID SOURCE, A SECOND ORIFICE COMMUNICATING SAID OTHER END OF SAID CYLINDER WITH A FLUID SOURCE, A THIRD ORIFICE COMMUNICATING THE INTERIOR OF SAID CYLINDER BETWEEN SAID PISTONS WITH A FLUID SOURCE, AND CIRCUMFERENTIAL PROJECTIONS ATTACHED TO SAID ROD AT POSITIONS EXTERIORLY SPACED FROM SAID ENDS OF SAID CYLINDER.
References Cited (Backward Citations)
US2380510A
Cited
US2987048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |