US3799203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floating detent for spool valves
Assignee: KAY PNEUMATICS MICHIGAN CORP
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Filing: 1972-12-04
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Granted: 1974-03-26
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Expires: 1992-12-04
Abstract
Abstract A solenoid operated valve having a free floating sliding spool is provided with an improved detent device loosely caged in the body of the valve and slidably engaging the sliding spool to frictionally restrain longitudinal movement thereof.
Inventors
- 👤 K Doutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:59
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0603; F16K31/0624; F16K31/0634; F16K11/00; F16K11/02; F16K11/04; F16K11/048; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
99 words
In a solenoid operated fluid control valve having a body provided with a cylindrical bore intersected by axially spaced, laterally extending fluid ports, a freely floating spool slidable in the bore and oppositely acting solenoids each having an operating plunger arranged to actuate the spool in one direction or the other; the improvement comprising full floating detents frictionally engaging said spool and positioned in enlarged areas in said valve adjacent said cylindrical bore so as to be movable radially with saId spool relative to said valve and fixed with respect to axial movement of said spool in said valve.
Claim 2
Dependent Claim
99 words
In a solenoid operated fluid control valve having a body provided with a cylindrical bore intersected by axially spaced, laterally extending fluid ports, a freely floating spool slidable in the bore and oppositely acting solenoids each having an operating plunger arranged to actuate the spool in one direction or the other; the improvement comprising full floating detents frictionally engaging said spool and positioned in enlarged areas in said valve adjacent said cylindrical bore so as to be movable radially with saId spool relative to said valve and fixed with respect to axial movement of said spool in said valve.
Claim 3
Dependent Claim
36 words
The improvement in a solenoid operated fluid control valve set forth in claim 1 and wherein the detents are apertured to permit fluid in the valve body to be present on both sides of said detents.
Claim 4
Dependent Claim
34 words
The improvement in a solenoid operated fluid control valve set forth in claim 1 and wherein said spool has spring housings on its opposite ends and said detents are engaged on said spring housings.
Claim 5
Dependent Claim
22 words
The improvement in a solenoid operated fluid control valve set forth in claim 1 and wherein said detents are resilient synthetic resin.
Claim 6
Dependent Claim
29 words
The improvement in a solenoid operated fluid control valve set forth in claim 1 and wherein said detents are resilient and have tapered annular flanges defining their innermost diameters.
References Cited (Backward Citations)
US2732860A
Cited
US2071736A
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US2663583A
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |