Patent US3331590A successfully refreshed from Google Patents.
US3331590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure reducing control valve
Assignee: Individual
•
Filing: 1965-02-18
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Granted: 1967-07-18
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Expires: 1985-02-18
Abstract
No abstract record available.
Inventors
- 👤 Battenfeld Werner
- 👤 Odendahl Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:05
CPC Classifications
F; F22; F22G; F22G5/00; F22G5/12; F22G5/123; F22G5/126; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/363; Y; Y10; Y10S; Y10S261/00; Y10S261/13; Y10S261/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A VALVE MECHANISM FOR THE PRESSURE-REDUCTION AND COOLING OF SUPERHEATED STEAM COMPRISING A CASING HAVING A STEAM INLET AND A STEAM OUTLET, A PRESSURE REDUCING VALVE IN SAID CASING, A FLOW CHAMBER DISPOSED IN SAID CASING DOWNSTREAM OF SAID PRESSURE REDUCING VALVE, SAID FLOW CHAMBER HAVING A CROSS-SECTION WHICH INCREASES IN THE DIRECTION OF FLOW THROUGH WHICH FLOWS SUPERSONIC STEAM, MEANS CENTRALLY LOCATED AT A DOWNSTREAM END PORTION OF SAID FLOW CHAMBER REDUCING THE CROSS-SECTION THEREOF, SAID LAST-MENTIONED MEANS INCLUDING A CONCAVE SURFACE PORTION OPENING IN OPPOSITION TO THE STEAM FLOW FOR CREATING A PRESSURE WAVE FRONT THEREBY TRANSFORMING THE SUPERSONIC FLOW TO SUBSONIC FLOW, AND OUTLET DUCT MEANS FOR INJECTING A COOLING MEDIUM INTO THE FLOW CHAMBER ADJACENT TO AND UPSTREAM OF SAID CROSS-SECTION REDUCING MEANS.
Claim 2
Dependent Claim
127 words
A VALVE MECHANISM FOR THE PRESSURE-REDUCTION AND COOLING OF SUPERHEATED STEAM COMPRISING A CASING HAVING A STEAM INLET AND A STEAM OUTLET, A PRESSURE REDUCING VALVE IN SAID CASING, A FLOW CHAMBER DISPOSED IN SAID CASING DOWNSTREAM OF SAID PRESSURE REDUCING VALVE, SAID FLOW CHAMBER HAVING A CROSS-SECTION WHICH INCREASES IN THE DIRECTION OF FLOW THROUGH WHICH FLOWS SUPERSONIC STEAM, MEANS CENTRALLY LOCATED AT A DOWNSTREAM END PORTION OF SAID FLOW CHAMBER REDUCING THE CROSS-SECTION THEREOF, SAID LAST-MENTIONED MEANS INCLUDING A CONCAVE SURFACE PORTION OPENING IN OPPOSITION TO THE STEAM FLOW FOR CREATING A PRESSURE WAVE FRONT THEREBY TRANSFORMING THE SUPERSONIC FLOW TO SUBSONIC FLOW, AND OUTLET DUCT MEANS FOR INJECTING A COOLING MEDIUM INTO THE FLOW CHAMBER ADJACENT TO AND UPSTREAM OF SAID CROSS-SECTION REDUCING MEANS.
References Cited (Backward Citations)
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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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |