US3146684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure piston and cylinder device with non-rotatable piston
Assignee: Individual
•
Filing: 1963-01-14
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Granted: 1964-09-01
•
Expires: 1983-01-14
Abstract
No abstract record available.
Inventors
- 👤 Alton S Vanderhoof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:08
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/08; F15B15/14; F15B15/1414
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
IN A FLUID PRESSURE DEVICE INCLUDING A PISTON RECIPROCABLE IN A CYLINDER HAVING A CYLINDRICAL BODY AND OPPOSITE CYLINDER HEADS PROVIDED WITH PASSAGES FOR FLUID PRESSURE, MEANS FOR PREVENTING ROTATION OF SAID PISTON AND FOR PREVENTING FLOW OF FLUID FROM ONE SIDE OF SAID PISTON TO THE OTHER COMPRISING AT LEAST ONE GUIDE ROD EXTENDING LONGITUDINALLY OF THE CYLINDER PARALLEL TO AND SPACED FROM THE AXIS OF THE CYLINDER WITH ITS ENDS RIGIDLY CONNECTED TO SAID CYLINDER HEADS, THE PISTON HAVING AN OPENING THROUGH WHICH SAID ROD EXTENDS, AND A RESILIENT SEALING ELEMENT SECURED TO AT LEAST ONE END OF SAID PISTON AND HAVING A PERIMETRAL FLANGE EXTENDING TOWARD THE CORRESPONDING CYLINDER HEAD AND SLIDABLY ENGAGING THE INNER SURFACE OF SAID CYLINDER BODY, SAID SEALING ELEMENT ALSO HAVING A HOLE THERETHROUGH AND A RESILIENT LIP EXTENDING FROM ONE SIDE THEREOF IN ENCIRCLING RELATION TO SAID HOLE AND FRICTIONALLY ENGAGING THE ROD TO PREVENT PASSAGE OF FLUID UNDER PRESSURE IN ONE DIRECTION FROM ONE SIDE OF SAID PISTON TO THE OTHER.
Claim 2
Dependent Claim
170 words
IN A FLUID PRESSURE DEVICE INCLUDING A PISTON RECIPROCABLE IN A CYLINDER HAVING A CYLINDRICAL BODY AND OPPOSITE CYLINDER HEADS PROVIDED WITH PASSAGES FOR FLUID PRESSURE, MEANS FOR PREVENTING ROTATION OF SAID PISTON AND FOR PREVENTING FLOW OF FLUID FROM ONE SIDE OF SAID PISTON TO THE OTHER COMPRISING AT LEAST ONE GUIDE ROD EXTENDING LONGITUDINALLY OF THE CYLINDER PARALLEL TO AND SPACED FROM THE AXIS OF THE CYLINDER WITH ITS ENDS RIGIDLY CONNECTED TO SAID CYLINDER HEADS, THE PISTON HAVING AN OPENING THROUGH WHICH SAID ROD EXTENDS, AND A RESILIENT SEALING ELEMENT SECURED TO AT LEAST ONE END OF SAID PISTON AND HAVING A PERIMETRAL FLANGE EXTENDING TOWARD THE CORRESPONDING CYLINDER HEAD AND SLIDABLY ENGAGING THE INNER SURFACE OF SAID CYLINDER BODY, SAID SEALING ELEMENT ALSO HAVING A HOLE THERETHROUGH AND A RESILIENT LIP EXTENDING FROM ONE SIDE THEREOF IN ENCIRCLING RELATION TO SAID HOLE AND FRICTIONALLY ENGAGING THE ROD TO PREVENT PASSAGE OF FLUID UNDER PRESSURE IN ONE DIRECTION FROM ONE SIDE OF SAID PISTON TO THE OTHER.
References Cited (Backward Citations)
US2849244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |