US3134400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow regulating device
Assignee: Individual
•
Filing: 1961-03-09
•
Granted: 1964-05-26
•
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 13:46
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.
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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) | 1967-05-26 | 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 |