The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 12, 1993
Filed:
Feb. 13, 1992
George Rudich, Jr, Cedarburg, WI (US);
Johnson Service Company, Milwaukee, WI (US);
Abstract
A positioner for use in pneumatic systems moves a pneumatic operator. The positioner is an electronic pilot positioner or electronic to pneumatic interface which provides accurate positioning of linear actuators in response to an electronic control signal. The actuator is moved as pneumatic fluid is exhausted or supplied through the exhaust valve and supply valve. The positioner utilizes two solenoids for controlling a supply valve and an exhaust valve. The positioner includes a control circuit which receives a signal from a central controller and a signal from a feedback circuit. The control circuit compares the feedback signal and the controller signal and generates a signal for positioning the actuator.