Patent US3791408A successfully refreshed from Google Patents.
US3791408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic pressure-telecontrolling valve
Assignee: Yuken Kogyo Co Ltd
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Filing: 1972-05-31
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Granted: 1974-02-12
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Expires: 1992-05-31
Abstract
Abstract This invention provides an electromagnetic pressuretelecontrolling valve characterized in that the valve inserted in a valve port is pressed by a pressure-controlling spring in the influence of a solenoid applied with a current, and that the hollow interior of said solenoid is filled with a damping oil so as to give a damping effect to an induced iron core.
Inventors
- 👤 K Saitou
- 👤 H Ichioka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:39
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0686; F16K31/0689; F16K17/00; F16K17/02; F16K17/04; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7905
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
212 words
In an assembly for controlling the flow of a fluid, valve means and electromagnet means operatively connected therewith, said valve means including a stationary valve member having a hollow interior which communicates with a source of fluid under pressure and a movable valve member having a closed position seated against said stationary valve member for closing the hollow interior thereof to prevent flow of the fluid, spring means operatively connected with said movable valve member for urging the latter to its closed position, movable electromagnet means having an armature operatively connected with said spring means for increasing the force with which said spring means opposes movement of said movable valve member away from said closed position thereof when said electromagnet means is energized, so that the extent to which said spring means opposes movement of the movable valve member away from the closed position thereof can be regulated in accordance with the extent to which said electromagnet means is energized, said electromagnet means having a hollow interior filled with a damping fluid for enhancing the stability of the operation of said electromagnet means, and said electromagnet means carrying an adjusting means which engages said armature for determining the initial position of said armature and thus the initial yieldability of said spring means.
Claim 2
Dependent Claim
212 words
In an assembly for controlling the flow of a fluid, valve means and electromagnet means operatively connected therewith, said valve means including a stationary valve member having a hollow interior which communicates with a source of fluid under pressure and a movable valve member having a closed position seated against said stationary valve member for closing the hollow interior thereof to prevent flow of the fluid, spring means operatively connected with said movable valve member for urging the latter to its closed position, movable electromagnet means having an armature operatively connected with said spring means for increasing the force with which said spring means opposes movement of said movable valve member away from said closed position thereof when said electromagnet means is energized, so that the extent to which said spring means opposes movement of the movable valve member away from the closed position thereof can be regulated in accordance with the extent to which said electromagnet means is energized, said electromagnet means having a hollow interior filled with a damping fluid for enhancing the stability of the operation of said electromagnet means, and said electromagnet means carrying an adjusting means which engages said armature for determining the initial position of said armature and thus the initial yieldability of said spring means.
Claim 3
Dependent Claim
60 words
The combination of claim 1 and wherein said electromagnet means includes a movable core formed by said armature and a stationary core surrounding said movaBle core and defining with the latter a gap in which the damping fluid is located, said armature itself being formed with an axial bore passing therethrough and in which the damping fluid is also located.
Claim 4
Dependent Claim
57 words
The combination of claim 1 and wherein said electromagnet means includes an outer casing and a cover threaded into said casing and engaging said armature, said cover forming at least part of said adjusting means so that by axially positioning said covering with respect to said casing the initial axial position of said armature will be determined.
Claim 5
Dependent Claim
37 words
The combination of claim 3 and wherein said cover threadedly carries a manually turnable screw member which forms part of said adjusting means and which also engages said armature to determine the initial position of the latter.
Claim 6
Dependent Claim
59 words
The combination of claim 1 and wherein said spring means is in the form of a coil spring coiled around part of said movable valve member, a spring bearing member supporting an end of the coil spring distant from said movable valve member, and a rod engaging said spring bearing member and connected to said armature for movement therewith.
Claim 7
Dependent Claim
61 words
The combination of claim 5 and wherein said spring bearing member is formed with an axial bore passing therethrough and with at least one radial bore at an end of said spring bearing member which is engaged by said rod so that the fluid which flows through the stationary valve member can flow through the interior of said spring bearing member.
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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |