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. 05, 2010
Filed:
Dec. 05, 2005
Julian Douglas Tyldesley Rimmer, Winnipeg, CA;
Richard James Steinburg, Winnipeg, CA;
Nabil Sabet, Winnipeg, CA;
Davis John Dyck, Winnipeg, CA;
Andrew Garth Mccorrister, Winnipeg, CA;
Alfred Theodor Dyck, Winnipeg, CA;
Jerry M. Sipes, Suwanee, GA (US);
Julian Douglas Tyldesley Rimmer, Winnipeg, CA;
Richard James Steinburg, Winnipeg, CA;
Nabil Sabet, Winnipeg, CA;
Davis John Dyck, Winnipeg, CA;
Andrew Garth McCorrister, Winnipeg, CA;
Alfred Theodor Dyck, Winnipeg, CA;
Jerry M. Sipes, Suwanee, GA (US);
E.H. Price Ltd., Winnipeg, CA;
Abstract
A variable air volume ceiling diffuser includes a damper that is raised and lowered by a linkage that is controlled by a duct temperature sensor/actuator and one or more room temperature sensors/actuators. The linkage includes a heating slide movable for the heating mode and a cooling slide movable for the cooling mode. The duct temperature sensor/actuator selects the heating slide for movement by the room temperature sensors/actuators in the heating mode and selects the cooling slide for movement by the room temperature sensors/actuators in the cooling mode. The differential movement between the heating and cooling slides moves a roller that engages a profiled cam surface attached to two lever arms. As the roller moves along the cam surface, the lever arms pivot about their axis of rotation so that the damper moves upward to close the air inlet and downward to open the air inlet.