Patent US3233626A successfully refreshed from Google Patents.
US3233626A
Expired / Lapsed
US
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Pressure control
Assignee: Union Tank Car Co
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Filing: 1964-04-30
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Granted: 1966-02-08
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Expires: 1984-04-30
Abstract
No abstract record available.
Inventors
- 👤 James E Hiers
- 👤 Russell E Tyrrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:08
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/10; G05D16/103; G05D16/106; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7837; Y10T137/7854; Y10T137/7857
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
IN A PRESSURE FLUID LINE INCLUDING AN UPSTREAM LINE SECTION AND A DOWNSTREAM LINE SECTION HAVING FREE ENDS, A PRESSURE REDUCER VALVE ARRANGEMENT FOR AUTOMATICALLY REDUCING FLUID PRESSURE FROM SAID UPSTREAM LINE SECTION TO SAID DOWNSTREAM LINE SECTION BY A PRESCRIBED RATIO, COMPRISING; A VALVE BODY EXTENDING INTO THE DOWNSTREAM LINE SECTION, A SHOULDER ON SAID VALVE BODY DISPOSED BETWEEN THE ADJACENT FREE ENDS OF THE LINE SECTIONS, COLLAR MEANS FOR DRAWING THE LINE SECTIONS AND SAID RIM TOGETHER IN FLUIDTIGHT RELATIONSHIP, A VALVE BORE EXTENDING THROUGH SAID BODY, AN ANNULAR VALVE SEAT FORMED IN SAID BORE AND DEFINING A VALVE PORT HAVING A PREDETERMINED CROSS-SECTIONAL ARES A2, A CYLINDER FORMED IN SAID BORE, A VALVE CORE IN SAID BORE INCLUDING A PISTON HAVING A PREDETERMINED CROSSSECTIONAL AREA A1 AND SLIDABLE IN SAID CYLINDER WHEREBY A CHAMBER IS FORMED IN SAID CYLINDER ABOVE SAID PISTON, MEANS VENTING SAID CHAMBER TO THE ATMOSPHERE, AN ANNULAR VALVE SEAT ON SAID CORE FOR SEATING AGAINST SAID BORE VALVE SEAT, THE RATIO OF FLUID PRESSURE P1 UPSTREAM OF SAID PORT TO FLUID PRESSURE P2 DOWNSTREAM OF SAID PORT BEING DEFINED BY THE FORMULA P1A1+P2A2$P1A2.
Claim 2
Dependent Claim
190 words
IN A PRESSURE FLUID LINE INCLUDING AN UPSTREAM LINE SECTION AND A DOWNSTREAM LINE SECTION HAVING FREE ENDS, A PRESSURE REDUCER VALVE ARRANGEMENT FOR AUTOMATICALLY REDUCING FLUID PRESSURE FROM SAID UPSTREAM LINE SECTION TO SAID DOWNSTREAM LINE SECTION BY A PRESCRIBED RATIO, COMPRISING; A VALVE BODY EXTENDING INTO THE DOWNSTREAM LINE SECTION, A SHOULDER ON SAID VALVE BODY DISPOSED BETWEEN THE ADJACENT FREE ENDS OF THE LINE SECTIONS, COLLAR MEANS FOR DRAWING THE LINE SECTIONS AND SAID RIM TOGETHER IN FLUIDTIGHT RELATIONSHIP, A VALVE BORE EXTENDING THROUGH SAID BODY, AN ANNULAR VALVE SEAT FORMED IN SAID BORE AND DEFINING A VALVE PORT HAVING A PREDETERMINED CROSS-SECTIONAL ARES A2, A CYLINDER FORMED IN SAID BORE, A VALVE CORE IN SAID BORE INCLUDING A PISTON HAVING A PREDETERMINED CROSSSECTIONAL AREA A1 AND SLIDABLE IN SAID CYLINDER WHEREBY A CHAMBER IS FORMED IN SAID CYLINDER ABOVE SAID PISTON, MEANS VENTING SAID CHAMBER TO THE ATMOSPHERE, AN ANNULAR VALVE SEAT ON SAID CORE FOR SEATING AGAINST SAID BORE VALVE SEAT, THE RATIO OF FLUID PRESSURE P1 UPSTREAM OF SAID PORT TO FLUID PRESSURE P2 DOWNSTREAM OF SAID PORT BEING DEFINED BY THE FORMULA P1A1+P2A2$P1A2.
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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |