US3788348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve guide
Assignee: Parker Hannifin Corp
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Filing: 1971-11-03
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Granted: 1974-01-29
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Expires: 1991-11-03
Abstract
Abstract A valve device having a guide for a reciprocating valve element, the guide having a tubular portion of substantial length slidably receiving a stem on the valve element, radial flange portions at one end of the tubular portion, and circumferentially spaced fingers extending generally axially from said flange portions, the fingers having radially outwardly extending portions sprung into a groove around a bore in which the guide is mounted, and a spring over the tubular portion engaging the flange portions and valve element for urging the latter to closed position, the fingers between said flange portions and said extending portions having an outside diameter substantially the same as the outside diameter of said spring.
Inventors
- 👤 K Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:34
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/28; F16L37/30; F16L37/32; F16L37/22; F16L37/23; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7932; Y10T137/8593; Y10T137/87917; Y10T137/87925; Y10T137/87941; Y10T137/87949; Y10T137/87957
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
231 words
A valve device comprising a body having a bore therethrough, a valve seat surrounding the bore, an annular groove radially outward of the bore and spaced axially of the seat, valve guide in said bore, said valve guide comprising a tubular portion having radially extending and circumferentially spaced flange portions at one end, a plurality of circumferentially spaced fingers extending axially from said flange portions in a direction away from said tubular portion, said fingers having radially outwardly extending portions received in said groove, and a valve element in said bore having a valve head movable to open and closed positions relative to said seat for controlling flow of fluid through said bore, said element having a stem projecting from said head and slidably received within said tubular portion, a coil spring closely fitted over said tubular portion and engaging said head and said flange portions to urge the valve element toward said seat, said finger axial portions throughout the greater portion of their length extending substantially parallel to the axis of said tubular portion and lying within a circle of substantially no greater diameter than the outside diameter of said spring, said stem in all positions of said valve element being axially spaced from said radially outwardly extending finger portions so as to permit unobstructed fluid flow through the entire region located radially within said radially outwardly extending finger portions.
Claim 2
Dependent Claim
231 words
A valve device comprising a body having a bore therethrough, a valve seat surrounding the bore, an annular groove radially outward of the bore and spaced axially of the seat, valve guide in said bore, said valve guide comprising a tubular portion having radially extending and circumferentially spaced flange portions at one end, a plurality of circumferentially spaced fingers extending axially from said flange portions in a direction away from said tubular portion, said fingers having radially outwardly extending portions received in said groove, and a valve element in said bore having a valve head movable to open and closed positions relative to said seat for controlling flow of fluid through said bore, said element having a stem projecting from said head and slidably received within said tubular portion, a coil spring closely fitted over said tubular portion and engaging said head and said flange portions to urge the valve element toward said seat, said finger axial portions throughout the greater portion of their length extending substantially parallel to the axis of said tubular portion and lying within a circle of substantially no greater diameter than the outside diameter of said spring, said stem in all positions of said valve element being axially spaced from said radially outwardly extending finger portions so as to permit unobstructed fluid flow through the entire region located radially within said radially outwardly extending finger portions.
Claim 3
Dependent Claim
77 words
The device of claim 1 in which said stem has a guide portion closely fitting the inside of said tubular portion the end of said stem remote from said valve element is within said tubular portion when said valve element is against said seat, and when said valve element is in the full open position said guide portion remains axially spaced a substantial distance from said finger radially portions on the side thereof toward said tubular portion.
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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |