Solenoid operated fluid valves
AssigneeThe Globe Tool and Engineering Company
InventorCharles L. Hopkins
Life of this patent
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Abstract
By incorporating driver switching circuitry and a suppression network as parts fixed with respect to a valve housing rather than remotely from the valve housing, advantages including transient suppression at the housing are obtained rendering the valve better suited for low power machine control operation. Both AC and DC operated valves with driver switching circuits and suppression networks are disclosed.
Claims15
In a solenoid operated fluid valve for use in production machines and the like, said valve being of the type having a valve housing, a solenoid located at and fixed to said housing for controlling the operation of the valve, the improvement wherein electrical switching means operatively associated with said solenoid is fixed in relation to and located at said housing, said switching means including active means responsive to logic pulses, and external circuit connection means are provided at said housing for electrical connection of a remote solenoid operating voltage source to said solenoid and for separate electrical connection of remote control logic to said switching means.
In a solenoid operated fluid valve for use in production machines and the like, said valve being of the type having a valve housing, first and second solenoids located at and fixed to said housing for controlling the operation of the valve,
- the improvement wherein electrical switching means and electrical selector means operatively associated with said solenoid are fixed in relation to and located at said housing, said electrical selector means selecting which of said solenoids will be energized when said switching means enables operation of said solenoids, both said electrical selector means and said switching means including means responsive to logic pulses, and external circuit connection means are provided at said housing for electrical connection of a remote solenoid operating voltage source to said solenoid and for separate electrical connection of remote control logic to said switching means and said selector means.
Dependencies are inferred from the claim text.