Patent US3134400A successfully refreshed from Google Patents.
US3134400A
Expired / Lapsed
US
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Flow regulating device
Assignee: Individual
•
Filing: 1961-03-09
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Granted: 1964-05-26
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Expires: 1981-03-09
Abstract
No abstract record available.
Inventors
- 👤 Herbert E Schifter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:00
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0106; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7796; Y10T137/7822; Y10T137/7823; Y10T137/7835; Y10T137/7836; Y10T137/8158; Y10T137/8326
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A FLOW REGULATING DEVICE COMPRISING A HOUSING HAVING OUTLET AND FLUID INLET PORTS; AN EXPANSIBLE WALL WHICH WITH SAID HOUSING DEFINES A GASTIGHT CHAMBER ABOUT SAID PORTS; A VALVE ELEMENT RECIPROCATIVE WITHIN SAID CHAMBER TO OPEN AND CLOSE ONE OF SAID PORTS; A PRESSURE RESPONSIVE COMPONENT DISPOSED WITHIN SAID HOUSING; MEANS ADJUSTABLY SPACING SAID COMPONENT FROM SAID LAST MENTIONED PORT; SAID PRESSURE RESPONSIVE COMPONENT BEING OPERABLY CONNECTED TO SAID VALVE ELEMENT WHEREBY THE FORCE TO CLOSE SAID LAST MENTIONED PORT MAY BE SELECTIVELY VARIED.
Claim 2
Dependent Claim
84 words
A FLOW REGULATING DEVICE COMPRISING A HOUSING HAVING OUTLET AND FLUID INLET PORTS; AN EXPANSIBLE WALL WHICH WITH SAID HOUSING DEFINES A GASTIGHT CHAMBER ABOUT SAID PORTS; A VALVE ELEMENT RECIPROCATIVE WITHIN SAID CHAMBER TO OPEN AND CLOSE ONE OF SAID PORTS; A PRESSURE RESPONSIVE COMPONENT DISPOSED WITHIN SAID HOUSING; MEANS ADJUSTABLY SPACING SAID COMPONENT FROM SAID LAST MENTIONED PORT; SAID PRESSURE RESPONSIVE COMPONENT BEING OPERABLY CONNECTED TO SAID VALVE ELEMENT WHEREBY THE FORCE TO CLOSE SAID LAST MENTIONED PORT MAY BE SELECTIVELY VARIED.
References Cited (Backward Citations)
DE68479C
Cited
US540603A
Cited
US769482A
Cited
US1271625A
Cited
US1697865A
Cited
US2035025A
Cited
US2278728A
Cited
US2318157A
Cited
GB738773A
Cited
US2894532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |