Patent US3592237A successfully refreshed from Google Patents.
US3592237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Throttle means for maintaining constant flow
Assignee: Individual
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Filing: 1969-06-23
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Granted: 1971-07-13
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Expires: 1989-06-23
Abstract
Abstract The invention relates to a throttle device for maintaining a constant flow through a pipe when the delivery pressure varies. The device includes a rigid perforate plate and a resilient disc having a central orifice, the disc being maintained in spaced relation to the plate by spacing elements extending transversely from the plate. Increased pressure in the pipe deflects the resilient disc towards the perforate plate so that the perforations of the plate are closed by the disc to a greater or lesser degree depending on the pressure. As the pressure increases the closing of the perforations reduces the effective cross-sectional area of the pipe to maintain a constant flow through the pipe.
Inventors
- 👤 Alwin Borschers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:55
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0106; G05D7/0113; F; F15; F15D; F15D1/00; F15D1/0005; F16; F16K; F16K15/00; F16K15/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
109 words
A fluid flow throttle device for maintaining a constant flow through a pipe when the fluid pressure varies, comprising a rigid perforated plate adapted to be fixedly attached internally of a pipe and having a framework forming a lattice having multiple openings in a plane substantially parallel to the direction of fluid flow, a resilient disc having a circular orifice, a plurality of spacing elements extending transversely from said plane, said elements being arranged circumferentially relative to said orifice, said disc being in abutting engagement with said elements and being increasingly displaceable with increasing pressure so as to bear partially against said lattice to close some of said openings.
Claim 2
Dependent Claim
109 words
A fluid flow throttle device for maintaining a constant flow through a pipe when the fluid pressure varies, comprising a rigid perforated plate adapted to be fixedly attached internally of a pipe and having a framework forming a lattice having multiple openings in a plane substantially parallel to the direction of fluid flow, a resilient disc having a circular orifice, a plurality of spacing elements extending transversely from said plane, said elements being arranged circumferentially relative to said orifice, said disc being in abutting engagement with said elements and being increasingly displaceable with increasing pressure so as to bear partially against said lattice to close some of said openings.
Claim 3
Dependent Claim
20 words
A throttle device according to claim 1 wherein said framework forms a plurality of openings surrounding each of said elements.
Claim 4
Dependent Claim
13 words
A throttle device according to claim 1 wherein said lattice forms a sieve.
Claim 5
Dependent Claim
30 words
A throttle device according to claim 1 wherein said plate has a circular periphery, said elements being at least three in number and being within the confines of said periphery.
Claim 6
Dependent Claim
28 words
A throttle device according to claim 1 wherein the resilience of said disc is rated to bear in part on said framework when subjected to pressurized fluid forces.
Claim 7
Dependent Claim
15 words
A throttle device according to claim 1 wherein said elements have the form of projections.
Claim 8
Dependent Claim
34 words
A throttle device according to claim 1 including two sets of said spacing elements, the elements in one of said sets being of greater height than the elements in the other of said sets.
Claim 9
Dependent Claim
31 words
A throttle device according to claim 4 wherein said plate has a plurality of centering fingers extending transversely from said periphery of said plate, said disc being centered by said fingers.
Claim 10
Dependent Claim
20 words
A throttle device according to claim 1 wherein said orifice is centrally located relative to the circumference of said disc.
References Cited (Backward Citations)
US2251964A
Cited
US3138177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |