Pressure responsive circuit control unit having adjustable, interchangeable actuator components and cam-operated switch
AssigneeMartin Industries, Inc.
InventorClyde J. Martin
Life of this patent
Estimating the term…
Abstract
The circuit control unit of the present invention comprises a piston-type pressure responsive member or gauge wherein one end of the piston extends beyond the gauge body and carries an actuator which is movable with the piston. A circuit control member is mounted for actuation by the actuator for controlling an external electrical circuit in response to changes in fluid pressure as detected by the pressure responsive member. Where desired, an indicator may be mounted in fixed relationship with the pressure responsive member, providing means for visibly indicating the pressure of the fluid and the position of the piston with respect to the pressure responsive member.
Claims12
Combination pressure actuated switch and gauge, comprising:
- a housing having aligned openings in opposite, spaced walls thereof;
- a pressure responsive device mounted in the opening in one wall and including a body having a bore therethrough and a reciprocable pressure responsive member in the bore including a rod portion extending out of the bore and into the housing;
- a pressure indicating scale mounted in the opening in the other wall and extending exteriorly of the housing and having a bore therein aligned with the bore in said body;
- an elongate actuator stem within the housing having one end thereof secured to the rod in coaxial, justaposed relationship therewith for movement with the rod, the other end of the actuator stem slidably extending into the bore in the scale and cooperable therewith to indicate pressure sensed by the pressure responsive member;
- cam means secured on the actuator stem between the ends thereof;
- and electrical switch means disposed within said housing and including switch actuator means situated in the path of movement of the cam means so as to be actuated thereby upon predetermined movement thereof.
Dependencies are inferred from the claim text.