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:
Mar. 13, 1990
Filed:
Oct. 13, 1988
David W Taylor, Goodrich, MI (US);
Benjamin H Baker, Davison, MI (US);
Cirtek Corporation, Flint, MI (US);
Abstract
Apparatus for controlling a vehicle climate control system having pneumatic passages provided with doors or baffles to regulate the flow of conditioned air to the passenger compartment. The passage or passages are selected by positioning a valve that couples a pneumatic source to one or more of the door or baffle operators. The position of the valve is determined by an electric motor that has applied thereto an energizing voltage from a control bridge circuit which also has applied thereto a feedback voltage which changes in response to operation of the motor. Movement of the valve to a selected position causes the feedback voltage to equal the energizing voltage, whereupon the motor is deenergized and movement of the valve terminates.