Patent US3836923A successfully refreshed from Google Patents.
US4146052A
Expired / Lapsed
US
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Damping device for a flow of liquid
Assignee: Sulzer Escher Wyss GmbH
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Filing: 1977-07-19
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Granted: 1979-03-27
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Expires: 1997-07-19
Abstract
Abstract The damping device has a transition section of increasing cross-sectional area with a perforated plate extending across the downstream end. The perforated plate has ducts which increase in cross-sectional area in a step-wise manner. The transition section may have a parabolic profile, a conical profile, an arcuate profile or may be formed of a sequence of conical parts.
Inventors
- 👤 Alfred Bubik
- 👤 Hans-Joachim Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:37
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/06; F; F16; F16L; F16L55/00; F16L55/04; F16L55/045; F16L55/05; F16L55/052; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86187; Y10T137/86212
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
157 words
A damping device for a flow of liquid comprising a cylindrical housing disposed on a vertical axis and defining a chamber, said housing having at least one transition section of increasing cross-sectional area in the direction of liquid flow to said chamber, said transition section having the shape of a body of revolution coaxial with said housing, an inlet line communicating with said transition section to deliver a flow of liquid thereto; an outlet line communicating with said chamber above said inlet line to exhaust a flow of liquid therefrom; and a horizontal perforated plate disposed in perpendicular relation to said axis within said housing at a downstream end of said transition section relative to a flow of liquid, said plate extending across the entire cross-section of said transition section and having a plurality of ducts therein, each said duct having a series of flow sections of step-wise increasing cross-sectional area in the direction of liquid flow.
Claim 2
Dependent Claim
157 words
A damping device for a flow of liquid comprising a cylindrical housing disposed on a vertical axis and defining a chamber, said housing having at least one transition section of increasing cross-sectional area in the direction of liquid flow to said chamber, said transition section having the shape of a body of revolution coaxial with said housing, an inlet line communicating with said transition section to deliver a flow of liquid thereto; an outlet line communicating with said chamber above said inlet line to exhaust a flow of liquid therefrom; and a horizontal perforated plate disposed in perpendicular relation to said axis within said housing at a downstream end of said transition section relative to a flow of liquid, said plate extending across the entire cross-section of said transition section and having a plurality of ducts therein, each said duct having a series of flow sections of step-wise increasing cross-sectional area in the direction of liquid flow.
Claim 3
Dependent Claim
17 words
A damping device as set forth in claim 1 wherein said transition section has a parabolic profile.
Claim 4
Dependent Claim
25 words
A damping device as set forth in claim 1 wherein said transition section has a profile line equal to an approximation of a parabolic line.
Claim 5
Dependent Claim
31 words
A damping device as set forth in claim 1 wherein said transition section has an inlet diameter (D 1 ) to outlet diameter (D 2 ) ratio of at most 1:2.
Claim 6
Dependent Claim
40 words
A damping device as set forth in claim 1 wherein said housing has a series of said transition sections between said inlet line and said chamber and a respective perforated plate at each downstream end of a respective transition section.
Claim 7
Dependent Claim
70 words
A damping device as set forth in claim 1 wherein said transition section is conical and which further comprises a plurality of perforated plates disposed in tandem therein, each said plate of said plurality extending across the entire cross-section of said transition section and having a plurality of ducts therein, each said duct having a series of flow sections of step-wise increasing cross-sectional area in the direction of liquid flow.
Claim 8
Dependent Claim
150 words
A damping device for a flow of liquid comprising a cylindrical housing disposed on a vertical axis and defining a chamber, said housing having a transition section of increasing cross-sectional area in the direction of liquid flow to said chamber, said transition section being disposed obliquely to said housing chamber; an inlet line communicating with said transition section to deliver a flow of liquid thereto; an outlet line communicating with said chamber above said inlet line to exhaust a flow of liquid therefrom; and a horizontal perforated plate disposed in perpendicular relation to said axis within said housing at a downstream end of said transition section relative to a flow of liquid, said plate extending across the entire cross-section of said transition section and having a plurality of ducts therein, each said duct having a series of flow sections of step-wise increasing cross-sectional area in the direction of liquid flow.
Claim 9
Dependent Claim
150 words
A damping device for a flow of liquid comprising a cylindrical housing disposed on a vertical axis and defining a chamber, said housing having a transition section of increasing cross-sectional area in the direction of liquid flow to said chamber, said transition section being disposed obliquely to said housing chamber; an inlet line communicating with said transition section to deliver a flow of liquid thereto; an outlet line communicating with said chamber above said inlet line to exhaust a flow of liquid therefrom; and a horizontal perforated plate disposed in perpendicular relation to said axis within said housing at a downstream end of said transition section relative to a flow of liquid, said plate extending across the entire cross-section of said transition section and having a plurality of ducts therein, each said duct having a series of flow sections of step-wise increasing cross-sectional area in the direction of liquid flow.
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) | 1982-03-26 | 1982-09-25 | 1983-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-26 | 1986-09-25 | 1987-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-26 | 1990-09-25 | 1991-03-27 | $7700.00 | Window Closed / Lapsed |