Patent US4092999A successfully refreshed from Google Patents.
US4092999A
Expired / Lapsed
US
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Fluid control valve
Assignee: Dana Inc
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Filing: 1977-04-25
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Granted: 1978-06-06
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Expires: 1997-04-25
Abstract
Abstract A fluid flow control valve has a housing with axially spaced upstream and downstream portions. An axially slidable piston is received within an upstream portion of the housing and a buckleable plate brace is anchored within a downstream portion. Two axially extending buckleable plates are each affixed at one end to the piston and at the other end to the brace. Two parallel walls extend from the brace toward the piston such that opposite edges of each buckleable plate are in a generally slidable engagement with the walls and form a variable area flow path therewith. The dynamic force of the fluid flowing through the valve acts against the piston, thereby tending to buckle the plates and reduce the area of the flow path. The valve, therefore, works to automatically regulate fluid flow to a predetermined value determined by the valve geometry and the mechanical properties of the plates as they buckle.
Inventors
- 👤 Lawrence M. Rubrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:59
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0126; G05D7/0133; Y; Y10; Y10S; Y10S521/00; Y10S521/902; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7792
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
116 words
A fluid flow control valve comprising: a housing having a fluid passageway extending axially therethrough from an upstream location to a downstream location; an axially slidable piston received within said housing, said piston having a first surface for exposure to upstream fluid and a second surface for exposure to downstream fluid; a first buckleable plate affixed to said piston and extending downstream therefrom; and means for affixing said first buckleable plate to said housing at a location downstream of said piston, whereby axial movement of said piston is affected by fluid flow through said valve and therefore affects the degree of buckling of said first buckleable plate which in turn stabilizes fluid flow through said valve.
Claim 2
Dependent Claim
116 words
A fluid flow control valve comprising: a housing having a fluid passageway extending axially therethrough from an upstream location to a downstream location; an axially slidable piston received within said housing, said piston having a first surface for exposure to upstream fluid and a second surface for exposure to downstream fluid; a first buckleable plate affixed to said piston and extending downstream therefrom; and means for affixing said first buckleable plate to said housing at a location downstream of said piston, whereby axial movement of said piston is affected by fluid flow through said valve and therefore affects the degree of buckling of said first buckleable plate which in turn stabilizes fluid flow through said valve.
Claim 3
Dependent Claim
18 words
A fluid flow control valve as defined in claim 1 wherein said first buckleable plate is resiliently buckleable.
Claim 4
Dependent Claim
29 words
A fluid flow control valve as defined in claim 1 wherein said first buckleable plate is simply supportingly affixed to said piston and rigidly supportingly affixed to said housing.
Claim 5
Dependent Claim
24 words
A fluid flow control valve as defined in claim 1 further comprising means for limiting axial movement of said piston in an upstream direction.
Claim 6
Dependent Claim
42 words
A fluid flow control valve as defined in claim 1 further comprising a second buckleable plate affixed to said piston and extending downstream therefrom, and means for affixing said second buckleable plate to said housing at a location downstream of said piston.
Claim 7
Dependent Claim
32 words
A fluid flow control valve as defined in claim 5 wherein said first and second buckleable plates are buckleable toward each other when said piston is axially moved in a downstream direction.
Claim 8
Dependent Claim
47 words
A fluid flow control valve as defined in claim 6 wherein said piston comprises a generally rectangular and knife edged fluid aperture extending generally axially therethrough and wherein said first and said second buckleable plates are affixed to said piston on laterally opposite sides of said aperture.
Claim 9
Dependent Claim
73 words
A fluid flow control valve as defined in claim 7 wherein said means for affixing said first and second buckleable plates comprises a brace axially spaced downstream from said piston and anchored within and in a generally sealing engagement with said housing, said brace defining a generally axially extending and rectangular shaped aperture, wherein said first and second buckleable plates are affixed to said brace adjacent laterally opposite sides of said brace aperture.
Claim 10
Dependent Claim
48 words
A fluid flow control valve as defined in claim 5 wherein said means for affixing said first and second buckleable plates comprises a brace axially spaced downstream of said piston, said valve further comprising two spaced and generally parallel walls extending from said brace in an upstream direction.
Claim 11
Dependent Claim
79 words
A fluid flow control valve as defined in claim 9 wherein said first and second buckleable plates are substantially rectangular and identical, and wherein the width of said plates is approximately equal to the distance between said two parallel walls, and wherein two opposite edges of each of said first and second buckleable plates are in a generally slidable engagement with said two parallel walls, whereby a variable area fluid orifice if formed between said plates and said walls.
Claim 12
Dependent Claim
39 words
A fluid flow control valve as defined in claim 10 further comprising a pressure damping cavity between each of said first and second buckleable plates and said housing, said cavities in a leaking fluid communication with said fluid passageway.
Claim 13
Dependent Claim
44 words
A fluid flow control valve as defined in claim 11 wherein said first and second buckleable plates are metal and wherein said housing has a generally cylindrical inside surface and wherein each of said piston and said brace have generally cylindrical shaped outer portions.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-05 | 1981-12-05 | 1982-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-05 | 1985-12-05 | 1986-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-05 | 1989-12-05 | 1990-06-06 | $7700.00 | Window Closed / Lapsed |