US3343559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling changes in air pressure in an unknown volume and pressure air system
Assignee: International Business Machines Corp
•
Filing: 1964-09-14
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Granted: 1967-09-26
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Expires: 1984-09-14
Abstract
No abstract record available.
Inventors
- 👤 Francis A Gopien
- 👤 Gerald R Willis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:08
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/021; A61B5/022; A61B5/0235; G; G05; G05D; G05D16/00; G05D16/028; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0655; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/7722; Y10T137/7781; Y10T137/7835; Y10T137/7836; Y10T137/8593; Y10T137/87917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN AN AIR PRESSURE CONTROL SYSTEM: A CONTROL AIR SYSTEM CONSISTING OF AN AIR TANK HAVING A FIXED VOLUME, MEANS FOR PRESSURIZING SAID AIR TANK TO A PREDETERMINED AIR PRESSURE, AND MEANS FOR BLEEDING THE AIR PRESSURE FROM SAID TANK AT A CONSTANT RATE INCLUDING A CONSTANT FLOW VALVE CONNECTED TO SAID TANK TO CONTROL THE AMOUNT OF DECREASE IN AIR PRESSURE AND A NEEDLE VALVE CONNECTED IN SERIES WITH SAID CONSTANT FLOW VALVE TO CONTROL THE RATE OF DECREASE IN AIR PRESSURE; A WORKING AIR SYSTEM CONSISTING OF A VARIABLE VOLUME INFLATABLE AND DEFLATABLE AIR DEVICE, MEANS FOR INFLATING SAID AIR DEVICE TO A PREDETERMINED AIR PRESSURE, AND MEANS FOR DEFLATING SAID VARIABLE VOLUME DEVICE INCLUDING A CONTROL VALVE HAVING FIRST AND SECOND CHAMBERS WITH A DIAPHRAGM SEPARATING SAID FIRST CHAMBER FROM SAID SECOND CHAMBER AND AN ORIFICE COMMUNICATING SAID SECOND CHAMBER WITH THE ATMOS-
Claim 2
Dependent Claim
146 words
IN AN AIR PRESSURE CONTROL SYSTEM: A CONTROL AIR SYSTEM CONSISTING OF AN AIR TANK HAVING A FIXED VOLUME, MEANS FOR PRESSURIZING SAID AIR TANK TO A PREDETERMINED AIR PRESSURE, AND MEANS FOR BLEEDING THE AIR PRESSURE FROM SAID TANK AT A CONSTANT RATE INCLUDING A CONSTANT FLOW VALVE CONNECTED TO SAID TANK TO CONTROL THE AMOUNT OF DECREASE IN AIR PRESSURE AND A NEEDLE VALVE CONNECTED IN SERIES WITH SAID CONSTANT FLOW VALVE TO CONTROL THE RATE OF DECREASE IN AIR PRESSURE; A WORKING AIR SYSTEM CONSISTING OF A VARIABLE VOLUME INFLATABLE AND DEFLATABLE AIR DEVICE, MEANS FOR INFLATING SAID AIR DEVICE TO A PREDETERMINED AIR PRESSURE, AND MEANS FOR DEFLATING SAID VARIABLE VOLUME DEVICE INCLUDING A CONTROL VALVE HAVING FIRST AND SECOND CHAMBERS WITH A DIAPHRAGM SEPARATING SAID FIRST CHAMBER FROM SAID SECOND CHAMBER AND AN ORIFICE COMMUNICATING SAID SECOND CHAMBER WITH THE ATMOS-
References Cited (Backward Citations)
US697680A
Cited
US2329323A
Cited
US2622610A
Cited
US2902048A
Cited
US3104661A
Cited
US3236230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |