Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
September 17, 2019
Patent Application Number
15584702
Date Filed
May 2, 2017
Patent Citations Received
Patent Primary Examiner
Patent abstract
A pneumatic control converter, preferably acting as a pneumatic thermostat, includes a pneumatic section, and electronic section and a piezo electric linkage section. A piezo electric rotary motor drives a rotary cam, with a cam follower linked via a W-shaped flexure linkage to bias the ball nozzle which controls the pneumatic control output pressure. The input to the piezo electric rotary motor is an electrical signal dependent upon electronically sensed pressure relative to the programmed set point. The pneumatic control converter consumes little electrical energy and is preferably battery powered, and the pneumatic control output pressure can be maintained even in the absence of electric power.
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