US4724870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow regulator
Assignee: DAM POUL STEFFEN SMEDEGADE 36 KETTING 6440 AUGUSTEN-BORG DENMARK
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Filing: 1984-07-20
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Granted: 1988-02-16
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Expires: 2004-07-20
Abstract
Abstract A flow regulator is disclosed having a body with a central bore and a dished shaped surface with a tapered groove from the bore to the periphery, a diaphragm is fastened to the periphery of the body with a passage extending around the periphery providing fluid communication between the upstream side of the diaphragm and the tapered groove, a spring is provided to bias the diaphragm towards the upstream side, the diaphragm is inelastically deformable against the dish shaped surface solely in accordance with the resistance to deformation of the spring and the fluid pressure on the upstream side of diaphragm to regulate the volume flow of fluid through the central bore.
Inventors
- 👤 Jens J. Molb k
- 👤 Peter Jorgensen
- 👤 Poul S. Dam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:39
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/12; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7792
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
199 words
A flow regultor, comprising, a casing, a partition body separating upstream and downstream sides of said casing, said partition body having a central bore and a generally dish shaped surface on said upstream side, a thin, flexible and imperforate diaphragm in said casing on said upstream side, means fastening the margin of said diaphragm relative to the periphery of said dish shaped surface, groove means in said dish shaped surface between the periphery thereof and said central bore, passage means extending around said periphery of said diaphragm providing fluid communication between said upstream side and the radially outward part of said groove means, spring means having one end thereof fixed relative to said partition body, said spring means biasing said diaphragm towards said upstream side, said diaphragm being inelastically deformable against said dish shaped surface to varying degrees solely in accordance with the resistance to deformation of said spring means and in accordance with the magnitude of fluid pressure on said upstream side to provide degrees of throttling of said groove means by said diaphragm corresponding to changes in the magnitude of fluid pressure on said upstream side to regulate the volume flow of fluid through said central bore.
Claim 2
Dependent Claim
199 words
A flow regultor, comprising, a casing, a partition body separating upstream and downstream sides of said casing, said partition body having a central bore and a generally dish shaped surface on said upstream side, a thin, flexible and imperforate diaphragm in said casing on said upstream side, means fastening the margin of said diaphragm relative to the periphery of said dish shaped surface, groove means in said dish shaped surface between the periphery thereof and said central bore, passage means extending around said periphery of said diaphragm providing fluid communication between said upstream side and the radially outward part of said groove means, spring means having one end thereof fixed relative to said partition body, said spring means biasing said diaphragm towards said upstream side, said diaphragm being inelastically deformable against said dish shaped surface to varying degrees solely in accordance with the resistance to deformation of said spring means and in accordance with the magnitude of fluid pressure on said upstream side to provide degrees of throttling of said groove means by said diaphragm corresponding to changes in the magnitude of fluid pressure on said upstream side to regulate the volume flow of fluid through said central bore.
Claim 3
Dependent Claim
18 words
A flow regulator according to claim 1 wherein said spring means extends through said partition body central bore.
Claim 4
Dependent Claim
16 words
A flow regulator according to claim 1 wherein said dish shaped surface has a conical shape.
Claim 5
Dependent Claim
19 words
A flow regulator according to claim 1 wherein said dish shaped surface is concave relative to said upstream side.
Claim 6
Dependent Claim
19 words
A flow regulator according to claim 1 wherein said dish shaped surface is convex relative to said upstream side.
Claim 7
Dependent Claim
43 words
A flow regulator according to claim 1 wherein said diaphragm is sufficiently thin and flexible so that a radially outward portion thereof may lie flat on said surface while the inner portion thereof is held off of said surface by said spring means.
Claim 8
Dependent Claim
33 words
A flow regulator according to claim 1 wherein said diaphragm is of a substantially inelastic material to minimize the influence of the material of said diaphragm of the characteristic curves of said regulator.
References Cited (Backward Citations)
US1668681A
Cited
US2762397A
Cited
US3097280A
Cited
US3692043A
Cited
US4210172A
Cited
GB2018113A
Cited
US4424936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-15 | 1991-08-17 | 1992-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-15 | 1995-08-17 | 1996-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-15 | 1999-08-17 | 2000-02-16 | $7700.00 | Window Closed / Lapsed |