US3920044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for obtaining quiet operation of valves, more particularly pressure reducing valves
Assignee: Samson Apparatebau AG
•
Filing: 1973-07-11
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Granted: 1975-11-18
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Expires: 1993-07-11
Abstract
Abstract A device for obtaining quiet operation of valves for flowing media, more particularly of pressure reducing valves, whose choke or valve seat opening cooperates with a choke or valve closing body having fluid flow directed against its direction of closing. The choke body has several annular outlet gaps with an adjustable gap width, which together produce the required choke crosssection.
Inventors
- 👤 Karl Gruner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:05
CPC Classifications
F; F16; F16K; F16K47/00; F16K47/04; F16K47/08; Y; Y10; Y10S; Y10S251/00; Y10S251/902; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86734
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
103 words
A device for obtaining quiet operation of valves for flowing media, more particularly of pressure reducing valves, having a choke or valve seat opening arranged to cooperate with a choke or valve closing body having fluid flow directed against its direction of closing, the improvement wherein the choke body has several annular outlet gaps with an adjustable gap width, which together produce the required choke cross-section, and at least one of the annular outlet gaps has at least two choke steps arranged in tandem, said choke steps being arranged on opposite sides of the choke discs and connected together by pressure equalizing ducts.
Claim 2
Independent Claim
103 words
A device for obtaining quiet operation of valves for flowing media, more particularly of pressure reducing valves, having a choke or valve seat opening arranged to cooperate with a choke or valve closing body having fluid flow directed against its direction of closing, the improvement wherein the choke body has several annular outlet gaps with an adjustable gap width, which together produce the required choke cross-section, and at least one of the annular outlet gaps has at least two choke steps arranged in tandem, said choke steps being arranged on opposite sides of the choke discs and connected together by pressure equalizing ducts.
Claim 3
Dependent Claim
27 words
A device in accordance with claim 1, wherein a pre-choke body is arranged at the inlet opening leading into the interior space of the annular choke part.
Claim 4
Dependent Claim
23 words
A device in accordance with claim 2, wherein at least two pre-Choke bodies are arranged at inlet openings provided with an axial spacing.
Claim 5
Dependent Claim
24 words
A device in accordance with claim 2, further comprising: pressure relieving means for relieving pressure between the pre-choke body and the annular choke part.
References Cited (Backward Citations)
US2008722A
Cited
US2042462A
Cited
US2587016A
Cited
US3133557A
Cited
US3253300A
Cited
US3513864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |