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:
Dec. 10, 1996
Filed:
Feb. 15, 1994
Charles E Black, III, Mount Prospect, IL (US);
Indak Manufacturing Corp., Northbrook, IL (US);
Abstract
The apparatus, which controls the operation and speed of an electrical blower motor and the operation of a vacuum operated recirculation control device, comprises a vacuum switch combined with an electrical switch having a rotary shaft and fixed and movable contacts whereby rotation of the shaft controls the operation and speed of the blower motor. The shaft is pushable rearwardly and is spring-biased forwardly for operating the vacuum switch whereby vacuum is selectively supplied to the recirculation control device for switching between outside air and recirculation of air. A push-push latching mechanism is provided for alternately latching the vacuum switch in one position and releasing the vacuum switch for return movement to its other position.