US3329170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure control valve
Assignee: REAL ESTATE SECURITIES Inc
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Filing: 1964-12-17
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Granted: 1967-07-04
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Expires: 1984-12-17
Abstract
No abstract record available.
Inventors
- 👤 John F Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:32
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694; Y10T137/8671
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A FLUID PRESSURE CONTROL VALVE COMPRISING (A) A HOLLOW HOUSING, (B) A VALVE MEMBER IN THE HOUSING, (C) THE HOUSING AND VALVE MEMBER BEING MOVABLE RELATIVE TO EACH OTHER BETWEEN NEUTRAL, FEED AND HOLD POSITIONS, (D) THE HOUSING AND VALVE MEMBER HAVING COOPERATING SPACED PORTS AND PORT OPENING AND PORT CLOSING SURFACES, WHEREIN THE PORTS DEFINE A FLUID PRESSURE INLET PORT, AN EXHAUST PORT AND A FLUID PRESSURE OUTLET PORT, THE PORTS AND SURFACES BEING ARRANGED (E) IN SAID NEUTRAL POSITION TO COMMUNICATE THE INLET AND OUTLET PORTS WITH THE EXHAUST PORT, (F) IN SAID FEED POSITION TO COMMUNICATE THE OUTLET PORT WITH THE INLET PORT AND TO SEAL THE INLET PORT FROM THE EXHAUST PORT, AND (G) IN SAID HOLD POSITION TO COMMUNICATE THE INLET PORT WITH THE EXHAUST PORT AND TO SEAL THE OUTLET PORT FROM THE INLET AND EXHAUST PORTS.
Claim 2
Dependent Claim
143 words
A FLUID PRESSURE CONTROL VALVE COMPRISING (A) A HOLLOW HOUSING, (B) A VALVE MEMBER IN THE HOUSING, (C) THE HOUSING AND VALVE MEMBER BEING MOVABLE RELATIVE TO EACH OTHER BETWEEN NEUTRAL, FEED AND HOLD POSITIONS, (D) THE HOUSING AND VALVE MEMBER HAVING COOPERATING SPACED PORTS AND PORT OPENING AND PORT CLOSING SURFACES, WHEREIN THE PORTS DEFINE A FLUID PRESSURE INLET PORT, AN EXHAUST PORT AND A FLUID PRESSURE OUTLET PORT, THE PORTS AND SURFACES BEING ARRANGED (E) IN SAID NEUTRAL POSITION TO COMMUNICATE THE INLET AND OUTLET PORTS WITH THE EXHAUST PORT, (F) IN SAID FEED POSITION TO COMMUNICATE THE OUTLET PORT WITH THE INLET PORT AND TO SEAL THE INLET PORT FROM THE EXHAUST PORT, AND (G) IN SAID HOLD POSITION TO COMMUNICATE THE INLET PORT WITH THE EXHAUST PORT AND TO SEAL THE OUTLET PORT FROM THE INLET AND EXHAUST PORTS.
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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |