US3132767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressible fluid metering apparatus
Assignee: North American Aviation Corp
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Filing: 1961-08-17
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Granted: 1964-05-12
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Expires: 1981-08-17
Abstract
No abstract record available.
Inventors
- 👤 Frederick H Gardner
- 👤 Robert E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:26
CPC Classifications
F; F15; F15B; F15B21/00; G; G01; G01F; G01F11/00; G01F11/28; G01F11/30; G01F11/32; B; B64; B64G; B64G1/00; B64G1/22; B64G1/24; B64G1/26; B64G1/40; B64G1/401
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
APPARATUS COMPRISING A MEASURING CHAMBER HAVING INLET AND OUTLET PORTS THEREOF, CONTROL MEANS DISPOSED WITHIN SAID CHAMBER FOR CLOSING SAID OUTLET PORT AND OPENING SAID INLET PORT SOLELY UNDER INLET PRESSURE, FOR CLOSING THE INLET PORT UPON THE CHAMBER PRESSURE REACHING THE INLET PRESSURE, AND FOR SELECTIVELY OPENING THE OUTLET PORT, SAID CONTROL MEANS COMPRISING FIRST AND SECOND VALVE ELEMENTS COOPERATING WITH SAID INLET AND OUTLET PORTS RESPECTIVELY AND AN APERTURED BELLOWS INTERCONNECTING SAID VALVE ELEMENTS.
Claim 2
Dependent Claim
76 words
APPARATUS COMPRISING A MEASURING CHAMBER HAVING INLET AND OUTLET PORTS THEREOF, CONTROL MEANS DISPOSED WITHIN SAID CHAMBER FOR CLOSING SAID OUTLET PORT AND OPENING SAID INLET PORT SOLELY UNDER INLET PRESSURE, FOR CLOSING THE INLET PORT UPON THE CHAMBER PRESSURE REACHING THE INLET PRESSURE, AND FOR SELECTIVELY OPENING THE OUTLET PORT, SAID CONTROL MEANS COMPRISING FIRST AND SECOND VALVE ELEMENTS COOPERATING WITH SAID INLET AND OUTLET PORTS RESPECTIVELY AND AN APERTURED BELLOWS INTERCONNECTING SAID VALVE ELEMENTS.
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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) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |