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:
Nov. 16, 1999
Filed:
Sep. 18, 1997
Edward L Godsey, Topeka, KS (US);
James Franks, Burlingame, KS (US);
Other;
Abstract
An air vent that automatically opens and closes in response to changes in the ambient air temperature. The air vent includes a housing, a louver frame mounted to the housing and a series of vent louvers pivotally mounted to the frame. The louver frame includes a cam member for automatically pivoting the louvers between an open position and a closed position in response to ambient air temperature changes. The cam member includes a spring fixedly mounted at one end to the housing and mounted at the other end to a camming bar, which is mounted to the louvers. This spring is formed of two different types of metals which react to changes in the ambient air temperature. More specifically, the metals are chosen so that the spring expands as the temperature increases to rotate the cam bar in one direction and incrementally open the louvers, and contracts as the temperature decreases to rotate the cam bar in the reverse direction and incrementally close the louvers. The camming bar is mounted to end bars which are pivotally attached along opposing ends of the louvers.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile