Patent US3315570A successfully refreshed from Google Patents.
US3315570A
Expired / Lapsed
US
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Pressure relieving means
Assignee: Motors Liquidation Co
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Filing: 1965-01-07
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Granted: 1967-04-25
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Expires: 1985-01-07
Abstract
No abstract record available.
Inventors
- 👤 Lee M Brewer
- 👤 Robert P Rohde
- 👤 William B Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:19
CPC Classifications
B; B62; B62D; B62D5/00; B62D5/06; B62D5/061
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN A SERVO SYSTEM, THE COMBINATION COMPRISING, A POWER CYLINDER, A PISTON IN SAID CYLINDER RECIPROCABLE TO AND FROM A PREDETERMINED END-STROKE POSITION, MEANS CONTROLLING PRESSURE SUPPLY AND EXHAUST TO AND FROM OPPOSITE SIDES OF SAID PISTON FOR SAID RECIPROCATION THEREOF, PRESSURE RELIEF MEANS IN SAID CYLINDER OPERABLE TO RELIEVE PRESSURE FROM ONE SIDE OF SAID PISTON TO THE OTHER, ADJUSTABLE ACTUATING MEANS OPERABLE TO ACTUATE SAID PRESSURE RELIEF MEANS, AND MEANS OPERABLE UPON MOVEMENT OF SAID PISTON TO SAID END-STROKE POSITION THEREOF TO ADJUST SAID ACTUATING MEANS FOR PRESSURE RELIEF UPON SUBSEQUENT MOVEMENT OF SAID PISTON TO SAID END-STROKE POSITION THEREOF.
Claim 2
Dependent Claim
102 words
IN A SERVO SYSTEM, THE COMBINATION COMPRISING, A POWER CYLINDER, A PISTON IN SAID CYLINDER RECIPROCABLE TO AND FROM A PREDETERMINED END-STROKE POSITION, MEANS CONTROLLING PRESSURE SUPPLY AND EXHAUST TO AND FROM OPPOSITE SIDES OF SAID PISTON FOR SAID RECIPROCATION THEREOF, PRESSURE RELIEF MEANS IN SAID CYLINDER OPERABLE TO RELIEVE PRESSURE FROM ONE SIDE OF SAID PISTON TO THE OTHER, ADJUSTABLE ACTUATING MEANS OPERABLE TO ACTUATE SAID PRESSURE RELIEF MEANS, AND MEANS OPERABLE UPON MOVEMENT OF SAID PISTON TO SAID END-STROKE POSITION THEREOF TO ADJUST SAID ACTUATING MEANS FOR PRESSURE RELIEF UPON SUBSEQUENT MOVEMENT OF SAID PISTON TO SAID END-STROKE POSITION THEREOF.
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) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |