US3374666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Volumetric efficiency computer
Assignee: RTX Corp
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Filing: 1966-04-21
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Granted: 1968-03-26
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Expires: 1986-04-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur B Shattuck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:35
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/06; G05D7/0617; G05D7/0629; G05D7/0635; F; F02; F02D; F02D29/00; G01; G01L; G01L3/00; G01L3/26; G01M; G01M15/00; G01M15/04; G01M15/08; F02D2700/00; F02D2700/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A DEVICE FOR COMPUTING THE VOLMETRIC EFFICIENCY OF A CYLINDER HAVING A PISTON COMPRISING: MEANS FOR GENERATING A SIGNAL INDICATIVE OF THE BOTTOM DEAD CENTER POSITION OF THE PISTON IN THE CYLINDER, MEANS FOR GENERATING A SIGNAL INDICATIVE OF EQUAL VOLUME INCREMENTS SWEPT OUT BY THE PISTON WITHIN THE CYLINDER, MEANS FOR GENERATING A SIGNAL INDICATIVE OF THE PRESSURE WITHIN THE CYLINDER, MEANS FOR STORING THE PRESSURE SIGNAL OF THE CYLINDER CORRSEPONDING TO THE PRESSURE OF THE CYLINDER WHEN THE PISTON IS AT THE BOTTOM DEAD CENTER POSITION, MEANS FOR COMPARING SAID STORED PRESSURE SIGNAL WITH SAID PRESSURE SIGNAL AND PRODUCING A SIGNAL INDICATIVE WHEN SAID PRESSURE SIGNAL IS LEESS THAN SAID STORED PRESSURE SIGNAL, AND MEANS ACTIVATED BY SAID COMPARISON SIGNAL FOR COUNTING SAID EQUAL VOLUME INCREMENTS.
Claim 2
Independent Claim
128 words
A DEVICE FOR COMPUTING THE VOLMETRIC EFFICIENCY OF A CYLINDER HAVING A PISTON COMPRISING: MEANS FOR GENERATING A SIGNAL INDICATIVE OF THE BOTTOM DEAD CENTER POSITION OF THE PISTON IN THE CYLINDER, MEANS FOR GENERATING A SIGNAL INDICATIVE OF EQUAL VOLUME INCREMENTS SWEPT OUT BY THE PISTON WITHIN THE CYLINDER, MEANS FOR GENERATING A SIGNAL INDICATIVE OF THE PRESSURE WITHIN THE CYLINDER, MEANS FOR STORING THE PRESSURE SIGNAL OF THE CYLINDER CORRSEPONDING TO THE PRESSURE OF THE CYLINDER WHEN THE PISTON IS AT THE BOTTOM DEAD CENTER POSITION, MEANS FOR COMPARING SAID STORED PRESSURE SIGNAL WITH SAID PRESSURE SIGNAL AND PRODUCING A SIGNAL INDICATIVE WHEN SAID PRESSURE SIGNAL IS LEESS THAN SAID STORED PRESSURE SIGNAL, AND MEANS ACTIVATED BY SAID COMPARISON SIGNAL FOR COUNTING SAID EQUAL VOLUME INCREMENTS.
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) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |