Pressure switch with increased deadband

Details Pressure switch with increased deadband Pressure switch with increased deadband

H - Electricity

01

H

H01H 35/38 (2006.01)

Patent

CA 2189608

A pressure switch has a housing with an interior bore extending from one end to the other. A rod slidable within the bore and operated by external fluid pressure extends between a piston at one end of the housing and a mechanically operated electrical switch at the other end of the housing. A spring is disposed about the rod between a first stop on the rod and a second stop on the housing. The spring provides resistance against movement of the rod under external pressure. The resistance of the spring to movement is adjusted by a sleeve engaging the spring, with the sleeve threaded into the bore of the housing for movement longitudinally within the housing. A split ring wedged between two other rings resists movement of the rod to longitudinal movement.

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