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. 16, 1999
Filed:
Jun. 11, 1996
Jordan M Stevenson, Walled Lake, MI (US);
Bipin D Parekh, Plymouth, MI (US);
Dennis Shifflett, Macomb, MI (US);
Fred W Butler, Oxford, MI (US);
TRW Inc., Cleveland, OH (US);
Ford Motor Company, Dearborn, MI (US);
Abstract
A rotary temperature control system for use in controlling the temperature of a blended air stream supplied to a vehicle passenger compartment includes a manually operable rotary control knob operatively connected with a control pulley that is, in turn, connected through a pull-pull cable system to a vent pulley. The vent pulley operates a blend door that controls the output temperature of a blended air stream. A drive connection between the vent pulley and a drive shaft of the blend door includes non-circular gears for producing a predetermined generally non-linear relationship between rotary movement of the control pulley and rotary movement of the output shaft to produce a generally linear relationship between the rotary movement of the control pulley and the temperature of the air stream throughout a major portion of the rotary movement of the control pulley.