US3320862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Force multiplying and safety power cylinder
Assignee: COMPRESSED AIR SERVICE CO
•
Filing: 1965-03-23
•
Granted: 1967-05-23
•
Expires: 1985-03-23
Abstract
No abstract record available.
Inventors
- 👤 Lee A Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 02:35
CPC Classifications
B; B25; B25B; B25B1/00; B25B1/06; B25B1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
LOCKING MEANS FOR FRICTIONALLY LOCKING A PISTON ROD TO A CYLINDER BORE WHEN SAID ROD ENCOUNTERS A RESISTING FORCE OF PREDETERMINED MAGNITUDE, SAID LOCKING MEANS INCLUDING A LOCKING BUSHING ADAPTED TO ENGAGE A CYLINDER BORE, EXPANSION MEANS CARRIED ON SAID PISTON ROD, SAID EXPANSION MEANS BEING ADPATED FOR AXIAL MOVEMENT RELATIVE TO SAID ROD THEREBY TO EXPAND SAID LOCKING BUSHING CARRIED ON SAID PISTON ROD INTO ENGAGEMENT WITH SAID BORE, MEANS CO-OPERATING WITH SAID EXPANSION MEANS TO MOVE THE SAME IN A DIRECTION OPPOSITE TO THE MOVEMENT OF SAID PISTON ROD FOR EFFECTING SAID ENGAGEMENT, SAID LAST NAMED MEANS BEING ACUATED BY A PISTON HEAD FLOATINGLY CARRIED ON SAID PISTON ROD WHEN SAID PISTON HEAD MOVES RELATIVE TO SAID ROD.
Claim 2
Dependent Claim
120 words
LOCKING MEANS FOR FRICTIONALLY LOCKING A PISTON ROD TO A CYLINDER BORE WHEN SAID ROD ENCOUNTERS A RESISTING FORCE OF PREDETERMINED MAGNITUDE, SAID LOCKING MEANS INCLUDING A LOCKING BUSHING ADAPTED TO ENGAGE A CYLINDER BORE, EXPANSION MEANS CARRIED ON SAID PISTON ROD, SAID EXPANSION MEANS BEING ADPATED FOR AXIAL MOVEMENT RELATIVE TO SAID ROD THEREBY TO EXPAND SAID LOCKING BUSHING CARRIED ON SAID PISTON ROD INTO ENGAGEMENT WITH SAID BORE, MEANS CO-OPERATING WITH SAID EXPANSION MEANS TO MOVE THE SAME IN A DIRECTION OPPOSITE TO THE MOVEMENT OF SAID PISTON ROD FOR EFFECTING SAID ENGAGEMENT, SAID LAST NAMED MEANS BEING ACUATED BY A PISTON HEAD FLOATINGLY CARRIED ON SAID PISTON ROD WHEN SAID PISTON HEAD MOVES RELATIVE TO SAID ROD.
References Cited (Backward Citations)
US435139A
Cited
US1578997A
Cited
US2515712A
Cited
GB898260A
Cited
US3150569A
Cited
US3242826A
Cited
US3272087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |