US3088656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor load control system
Assignee: Westinghouse Air Brake Co
•
Filing: 1960-05-13
•
Granted: 1963-05-07
•
Expires: 1980-05-13
Abstract
No abstract record available.
Inventors
- 👤 Robert R Hartley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:53
CPC Classifications
F; F04; F04B; F04B49/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN COMBINATION WITH A RECIPROCATING COMPRESSOR FOR RAISING THE PRESSURE OF A GAS FROM A SUPPLY PRESSURE TO A DISCHARGE PRESSURE, ADJUSTABLE TORQUE LIMITING MEANS OPERATIVELY CONNECTED TO THE COMPRESSOR FOR REDUCING THE LOAD THEREON, FIRST PRESSURE RESPONSIVE MEANS FOR GENERATING A SIGNAL IN ACCORDANCE WITH THE SUPPLY PRESSURE, SECOND PRESSURE RESPONSIVE MEANS FOR GENERATING A SECOND SIGNAL IN ACCORDANCE WITH THE DISCHARGE PRESSURE, MEANS CONTROLLED BY SAID FIRST PRESSURE RESPONSIVE MEANS FOR GENERATING A THIRD SIGNAL IN ACCORDANCE WITH A PREDETERMINED FUNCTION OF SAID FIRST PRESSURE, AND MEANS CONTROLLED BY SAID SECOND AND THIRD SIGNALS FOR ADJUSTING SAID TORQUE LIMITING MEANS TO MAINTAIN THE LOAD ON SAID COMPRESSOR AT A DESIRED VALVE.
Claim 2
Dependent Claim
113 words
IN COMBINATION WITH A RECIPROCATING COMPRESSOR FOR RAISING THE PRESSURE OF A GAS FROM A SUPPLY PRESSURE TO A DISCHARGE PRESSURE, ADJUSTABLE TORQUE LIMITING MEANS OPERATIVELY CONNECTED TO THE COMPRESSOR FOR REDUCING THE LOAD THEREON, FIRST PRESSURE RESPONSIVE MEANS FOR GENERATING A SIGNAL IN ACCORDANCE WITH THE SUPPLY PRESSURE, SECOND PRESSURE RESPONSIVE MEANS FOR GENERATING A SECOND SIGNAL IN ACCORDANCE WITH THE DISCHARGE PRESSURE, MEANS CONTROLLED BY SAID FIRST PRESSURE RESPONSIVE MEANS FOR GENERATING A THIRD SIGNAL IN ACCORDANCE WITH A PREDETERMINED FUNCTION OF SAID FIRST PRESSURE, AND MEANS CONTROLLED BY SAID SECOND AND THIRD SIGNALS FOR ADJUSTING SAID TORQUE LIMITING MEANS TO MAINTAIN THE LOAD ON SAID COMPRESSOR AT A DESIRED VALVE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |