Patent US4180100A successfully refreshed from Google Patents.
US4180100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control valve having a low noise throttling device
Assignee: Bayer AG
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Filing: 1977-05-23
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Granted: 1979-12-25
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Expires: 1997-05-23
Abstract
Abstract The invention relates to a control valve for throttling in which is provided simple structural elements in the outlet section for having a low noise characteristic.
Inventors
- 👤 Fritz Kolb
- 👤 Silvan Fehlisch
- 👤 Otto Ziegert
- 👤 Hans Bender
- 👤 Manfred Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 01:47
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/30; F16K3/34; F16K47/00; F16K47/08; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86734; Y10T137/86759; Y10T137/86791
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
94 words
A control valve comprising a valve housing having a fluid inlet and a fluid outlet, a perforated cylindrical hollow body arranged centrally in the housing downstream of the inlet, a closure element disposed in the hollow body, regulating means for displacing the closure element, and a mass of small fluid-flow resisting bodies irregularly situated around the cylindrical hollow body and completely filling the inside of the housing around the hollow body and between the fluid inlet and the fluid outlet, wherein said bodies are unconnected sections of pipe having walls perforated with triangular apertures.
Claim 2
Dependent Claim
94 words
A control valve comprising a valve housing having a fluid inlet and a fluid outlet, a perforated cylindrical hollow body arranged centrally in the housing downstream of the inlet, a closure element disposed in the hollow body, regulating means for displacing the closure element, and a mass of small fluid-flow resisting bodies irregularly situated around the cylindrical hollow body and completely filling the inside of the housing around the hollow body and between the fluid inlet and the fluid outlet, wherein said bodies are unconnected sections of pipe having walls perforated with triangular apertures.
Claim 3
Dependent Claim
32 words
A control valve as claimed in claim 1, further comprising a flat perforated plate having openings which are smaller than the minimum dimensions of the resisting bodies and disposed at the outlet.
References Cited (Backward Citations)
CA216577A
Cited
US2323895A
Cited
US3042078A
Cited
US3731903A
Cited
US3865352A
Cited
DE2446780A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-24 | 1983-06-25 | 1983-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-24 | 1987-06-25 | 1987-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-24 | 1991-06-25 | 1991-12-25 | $7700.00 | Window Closed / Lapsed |