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:
May. 22, 1979
Filed:
Mar. 24, 1977
Applicant:
Inventor:
Edward N Caldwell, Knoxville, TN (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F24F / ;
U.S. Cl.
CPC ...
236 49 ; 236 / ; 236100 ;
Abstract
A thermostatic ventilator operator has a thermostatic actuator consisting of a pair of tubes telescoped together with a plurality of thermally responsive power elements arranged coaxially therein. An operating lever is pivoted on a mounting bracket. The thermostatic actuator is pivotally connected to the mounting bracket and to the operating lever with one of the pivots being slidable in a direction normal to its axis. A pair of extension springs bias the slidable pivot in one direction.