US3393701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure responsive device
Assignee: WALLACE W BROWN
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Filing: 1966-02-02
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Granted: 1968-07-23
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Expires: 1986-02-02
Abstract
No abstract record available.
Inventors
- 👤 Wallace W Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:23
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0106; G05D7/012; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0675; G05D16/0677; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7809; Y10T137/7812; Y10T137/782; Y10T137/7831
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PRESSURE RESPONSIVE DEVICE COMPRISING: AN EXPANDABLE TUBULAR DIAPHRAGM FORMED WITH A PLURALITY OF MOVABLE SIDE WALLS CIRCUMFERENTIALLY SPACED EQUAL DISTANCES APART, ONE END OF EACH SIDE WALL BEING PIVOTALLY SECURED, THE OTHER END BEING FREE TO PIVOT TRANSVERSELY IN A GENERALLY RADIAL DIRECTION RELATIVE TO FLOW THROUGH SAID DIAPHRAGM; MEANS FOR CONNECTING THE ENDS OF SAID TUBULAR DIAPHRAGM INTO A FLOW LINE; VALVE MEANS INCLUDING A MOVABLE VALVE ELEMENT FOR REGULATING THE FLOW THROUGH SAID DIAPHRAGM; AND ACTUATING MEANS FOR POSITIONING SAID VALVE ELEMENT IN RESPONSE TO THE EXPANSION AND CONTRACTION OF SAID TUBULAR DIAPHRAGM.
Claim 2
Dependent Claim
96 words
A PRESSURE RESPONSIVE DEVICE COMPRISING: AN EXPANDABLE TUBULAR DIAPHRAGM FORMED WITH A PLURALITY OF MOVABLE SIDE WALLS CIRCUMFERENTIALLY SPACED EQUAL DISTANCES APART, ONE END OF EACH SIDE WALL BEING PIVOTALLY SECURED, THE OTHER END BEING FREE TO PIVOT TRANSVERSELY IN A GENERALLY RADIAL DIRECTION RELATIVE TO FLOW THROUGH SAID DIAPHRAGM; MEANS FOR CONNECTING THE ENDS OF SAID TUBULAR DIAPHRAGM INTO A FLOW LINE; VALVE MEANS INCLUDING A MOVABLE VALVE ELEMENT FOR REGULATING THE FLOW THROUGH SAID DIAPHRAGM; AND ACTUATING MEANS FOR POSITIONING SAID VALVE ELEMENT IN RESPONSE TO THE EXPANSION AND CONTRACTION OF SAID TUBULAR DIAPHRAGM.
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) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |