US3934815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid control valves
Assignee: Expert Industrial Controls Ltd
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Filing: 1975-03-27
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Granted: 1976-01-27
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Expires: 1995-03-27
Abstract
Abstract A fluid control valve includes a solenoid which controls the movement of an armature which has side plates. Movement of the armature is transmitted to a spring abutment having a head portion and the side plates of the armature are turned inwardly beneath the reduced heat portion of the spring abutment. The spring abutment effects operation of the stem of the valve.
Inventors
- 👤 John Thomas Marsden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:23
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0603; F16K31/0624; F16K31/0634; F16K31/0627
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
190 words
A fluid control valve of the kind specified comprising a T-shaped armature, said armature having side plates, extensions on said side plates which extend beyond the head of the armature, the end portions of said extensions extending substantially at right angles to the remaining portions of the extensions, a spring abutment movable in the housing, a coiled compression spring defining said resilient means, said spring engaging said abutment to urge the abutment into contact with a stem on the valve member thereby to urge the valve member into contact with the seating defined about said one aperture, means carried by the abutment and engageable by the end portions of said extensions when in use electric current is supplied to a solenoid forming part of said electromagnetic means, the flow of current in the solenoid causing the armature to move the abutment in a direction away from the valve member to allow the valve member to be displaced by the air pressure, and stop means defined in the housing and which arrests the movement of the armature towards the valve member when the flow of electric current in the solenoid ceases.
Claim 2
Dependent Claim
190 words
A fluid control valve of the kind specified comprising a T-shaped armature, said armature having side plates, extensions on said side plates which extend beyond the head of the armature, the end portions of said extensions extending substantially at right angles to the remaining portions of the extensions, a spring abutment movable in the housing, a coiled compression spring defining said resilient means, said spring engaging said abutment to urge the abutment into contact with a stem on the valve member thereby to urge the valve member into contact with the seating defined about said one aperture, means carried by the abutment and engageable by the end portions of said extensions when in use electric current is supplied to a solenoid forming part of said electromagnetic means, the flow of current in the solenoid causing the armature to move the abutment in a direction away from the valve member to allow the valve member to be displaced by the air pressure, and stop means defined in the housing and which arrests the movement of the armature towards the valve member when the flow of electric current in the solenoid ceases.
Claim 3
Dependent Claim
22 words
A control valve as claimed in claim 1 in which said end portions of the extensions are turned inwardly towards each other.
Claim 4
Dependent Claim
83 words
A control valve as claimed in claim 2 in which said means carried by the abutment comprises a stem formed integrally with the abutment and a head formed on the stem, the thickness of said end portions of the extensions in relation to the distance between the head and the main body portion of the abutment being such that continued movement of the armature into contact with the stop can occur after the movement of the valve member and abutment has been arrested.
Claim 5
Dependent Claim
26 words
A control valve as claimed in claim 1, in which said stop means comprises a pair of stop surfaces engageable by the head of the armature.
References Cited (Backward Citations)
FR1197186A
Cited
US3327264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |