US3341673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air switch in which a flexible diaphragm operates a dump valve in response to pressure changes
Assignee: Individual
•
Filing: 1966-03-16
•
Granted: 1967-09-12
•
Expires: 1986-03-16
Abstract
No abstract record available.
Inventors
- 👤 Kent B Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:50
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN AN AIR SWITCH INCLUDING A HOUSING, A CHAMBER WITHIN SAID HOUSING, A FLEXIBLE DIAPHRAGM SEALED WITHIN SAID HOUSING AND FORMING A SURFACE OF SAID CHAMBER, A REFERENCE PRESSURE SYSTEM FOR SUPPLYING AIR TO SAID CHAMBER AT A REFERENCE PRESSURE, A GAGING PRESSURE SYSTEM FOR SUPPLYING AIR AGAINST THE SURFACE OF SAID DIAPHRAGM OPPOSITE FROM SAID CHAMBER AT A MINIMUM PRESSURE OF LESS THAN SAID REFERENCE PRESSURE, AND MEANS FOR VARYING THE PRESSURE WITHIN SAID GAGING PRESSURE SYSTEM IN RESPONSE TO EXTERNAL STIMULI AND TO CAUSE FLEXURE OF SAID DIAPHRAGM WHEN SAID PRESSURE WITHIN SAID GAGING PRESSURE SYSTEM EXCEEDS SAID REFERENCE PRESSURE, MEANS FOR INCREASING THE DIFFERENTIAL PRESSURE ACROSS SAID DIAPHRAGM AND RAPIDLY
Claim 2
Dependent Claim
113 words
IN AN AIR SWITCH INCLUDING A HOUSING, A CHAMBER WITHIN SAID HOUSING, A FLEXIBLE DIAPHRAGM SEALED WITHIN SAID HOUSING AND FORMING A SURFACE OF SAID CHAMBER, A REFERENCE PRESSURE SYSTEM FOR SUPPLYING AIR TO SAID CHAMBER AT A REFERENCE PRESSURE, A GAGING PRESSURE SYSTEM FOR SUPPLYING AIR AGAINST THE SURFACE OF SAID DIAPHRAGM OPPOSITE FROM SAID CHAMBER AT A MINIMUM PRESSURE OF LESS THAN SAID REFERENCE PRESSURE, AND MEANS FOR VARYING THE PRESSURE WITHIN SAID GAGING PRESSURE SYSTEM IN RESPONSE TO EXTERNAL STIMULI AND TO CAUSE FLEXURE OF SAID DIAPHRAGM WHEN SAID PRESSURE WITHIN SAID GAGING PRESSURE SYSTEM EXCEEDS SAID REFERENCE PRESSURE, MEANS FOR INCREASING THE DIFFERENTIAL PRESSURE ACROSS SAID DIAPHRAGM AND RAPIDLY
References Cited (Backward Citations)
US2249904A
Cited
US2567360A
Cited
US2585533A
Cited
US2618288A
Cited
US2729968A
Cited
US2795855A
Cited
US3140368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |