US3339910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic leveling system
Assignee: Motors Liquidation Co
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Filing: 1966-08-22
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Granted: 1967-09-05
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Expires: 1986-08-22
Abstract
No abstract record available.
Inventors
- 👤 George W Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:48
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/015; B60G17/0152; B60G17/0155
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN AN AUTOMATIC LEVELING SYSTEM FOR MAINTAINING A PREDETERMINED HEIGHT RELATIONSHIP BETWEEN A SPRUNG AND AN UNSPRUNG MASS, THE COMBINATION OF, A SHOCK ABSORBER UNIT, FLUID SPRING MEANS SUPPORTED ON SAID SHOCK ABSORBER UNIT FOR ADJUSTING THE LENGTH OF SAID SHOCK ABSORBER UNIT TO MAINTAIN THE SPRUNG MASS AT A PREDETERMINED HEIGHT RELATIONSHIP WITH RESPECT TO THE UNSPRUNG MASS, A SOURCE OF PRESSURE FOR INFLATING SAID FLUID SPRING MEANS INCLUDING A COMPRESSOR, MEANS INCLUDING A SOLENOID VALVE FOR CONTROLLING THE PRESSURE LEVEL IN SAID FLUID SPRING MEANS, A SOURCE OF POWER FOR DRIVING SAID COMPRESSOR, SWITCH MEANS RESPONDSIVE TO CHANGES IN SAID LOAD OF THE SPRUNG MASS FOR SELECTIVELY OPERATING SAID COMPRESSOR AND SAID SOLENOID VALVE TO MODULATE THE PRESSURE IN SAID FLUID SPRING MEANS TO MAINTAIN THE DESIRED HEIGHT RELATIONSHIP BETWEEN THE SPRUNG AND UNSPRUNG MASSES.
Claim 2
Dependent Claim
137 words
IN AN AUTOMATIC LEVELING SYSTEM FOR MAINTAINING A PREDETERMINED HEIGHT RELATIONSHIP BETWEEN A SPRUNG AND AN UNSPRUNG MASS, THE COMBINATION OF, A SHOCK ABSORBER UNIT, FLUID SPRING MEANS SUPPORTED ON SAID SHOCK ABSORBER UNIT FOR ADJUSTING THE LENGTH OF SAID SHOCK ABSORBER UNIT TO MAINTAIN THE SPRUNG MASS AT A PREDETERMINED HEIGHT RELATIONSHIP WITH RESPECT TO THE UNSPRUNG MASS, A SOURCE OF PRESSURE FOR INFLATING SAID FLUID SPRING MEANS INCLUDING A COMPRESSOR, MEANS INCLUDING A SOLENOID VALVE FOR CONTROLLING THE PRESSURE LEVEL IN SAID FLUID SPRING MEANS, A SOURCE OF POWER FOR DRIVING SAID COMPRESSOR, SWITCH MEANS RESPONDSIVE TO CHANGES IN SAID LOAD OF THE SPRUNG MASS FOR SELECTIVELY OPERATING SAID COMPRESSOR AND SAID SOLENOID VALVE TO MODULATE THE PRESSURE IN SAID FLUID SPRING MEANS TO MAINTAIN THE DESIRED HEIGHT RELATIONSHIP BETWEEN THE SPRUNG AND UNSPRUNG MASSES.
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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |