Patent US3272087A successfully refreshed from Google Patents.
US3272087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Force multiplying and safety power cylinder
Assignee: COMPRESSED AIR SERVICE CO
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Filing: 1964-10-09
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Granted: 1966-09-13
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Expires: 1984-10-09
Abstract
No abstract record available.
Inventors
- 👤 Perrin C Culver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:58
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/20; F15B15/204
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A POWER CYLINDER DEVICE COMPRISING A CYLINDER, PISTON MEANS IN SAID CYLINDER AND MOVABLE THROUGH A STROKE RELATIVE THERETO, A ROD MEANS IN SAID CYLINDER AND EXTENDING OUTWARDLY THEREFROM, SAID PISTON MEANS BEING MOVABLE RELATIVE TO SAID ROD MEANS, RESILIENT MEANS INTERCONNECTING SAID PISTON MEANS AND SAID ROD MEANS FOR TRANSMITTING A FORCE FROM SAID PISTON MEANS TO SAID ROD MEANS, AND LOCK MEANS FOR SAID ROD MEANS, SAID LOCK MEANS INCLUDING A PLURALITY OF MEMBERS INTERPOSED BETWEEN SAID ROD AND THE INNER CIRCUMFERENTIAL WALL OF SAID CYLINDER, EACH OF SAID MEMBERS HAVING A FORWARD
Claim 2
Dependent Claim
95 words
A POWER CYLINDER DEVICE COMPRISING A CYLINDER, PISTON MEANS IN SAID CYLINDER AND MOVABLE THROUGH A STROKE RELATIVE THERETO, A ROD MEANS IN SAID CYLINDER AND EXTENDING OUTWARDLY THEREFROM, SAID PISTON MEANS BEING MOVABLE RELATIVE TO SAID ROD MEANS, RESILIENT MEANS INTERCONNECTING SAID PISTON MEANS AND SAID ROD MEANS FOR TRANSMITTING A FORCE FROM SAID PISTON MEANS TO SAID ROD MEANS, AND LOCK MEANS FOR SAID ROD MEANS, SAID LOCK MEANS INCLUDING A PLURALITY OF MEMBERS INTERPOSED BETWEEN SAID ROD AND THE INNER CIRCUMFERENTIAL WALL OF SAID CYLINDER, EACH OF SAID MEMBERS HAVING A FORWARD
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |