US3116918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum spring control apparatus
Assignee: Motors Liquidation Co
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Filing: 1962-02-19
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Granted: 1964-01-07
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Expires: 1982-02-19
Abstract
No abstract record available.
Inventors
- 👤 Philip L Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:05
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/02; B60G17/04; B60G17/052; Y; Y10; Y10S; Y10S60/00; Y10S60/907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN COMBINATION WITH AN ENGINE MANIFOLD GENERATED SOURCE OF VACUUM, A VACUUM ENERGIZED SPRING, VALVE MEANS FOR REGULATING COMMUNICATION BETWEEN SAID SPRING AND SAID VACUUM SOURCE, ADDITIONAL VALVE MEANS FOR REGULATING COMMUNICATION BETWEEN SAID SPRING AND ATMOSPHERE, AND SOURCE VACUUM SENSITIVE MASTER VALVE MEANS DISPOSED BETWEEN SAID ADDITIONAL VALVE MEANS AND ATMOSPHERE ACTING TO OVERRIDE THE ACTION OF THE LATTER WHEN THE VACUUM LEVEL AT SAID SOURCE FALLS WITHIN A PREDETERMINED RANGE.
Claim 2
Dependent Claim
72 words
IN COMBINATION WITH AN ENGINE MANIFOLD GENERATED SOURCE OF VACUUM, A VACUUM ENERGIZED SPRING, VALVE MEANS FOR REGULATING COMMUNICATION BETWEEN SAID SPRING AND SAID VACUUM SOURCE, ADDITIONAL VALVE MEANS FOR REGULATING COMMUNICATION BETWEEN SAID SPRING AND ATMOSPHERE, AND SOURCE VACUUM SENSITIVE MASTER VALVE MEANS DISPOSED BETWEEN SAID ADDITIONAL VALVE MEANS AND ATMOSPHERE ACTING TO OVERRIDE THE ACTION OF THE LATTER WHEN THE VACUUM LEVEL AT SAID SOURCE FALLS WITHIN A PREDETERMINED RANGE.
References Cited (Backward Citations)
US2981551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-06 | 1967-07-08 | 1968-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-06 | 1971-07-08 | 1972-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-06 | 1975-07-08 | 1976-01-07 | $7700.00 | Window Closed / Lapsed |