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:
Apr. 08, 1997
Filed:
Jan. 18, 1994
Dov Z Glucksman, Wenham, MA (US);
John A Deros, Salem, MA (US);
Appliance Development Corp., Danvers, MA (US);
Abstract
A motor is located in the air inlet area is enclosed in a shock proof housing. The housing is of a cylindrical configuration, comprising a solid rear wall and a front wall which contains air inlet openings small enough to prevent access to the live electrical parts, the enclosure is further provided with a circumferential air outlet positioned between the front and rear walls. A motor is located in the air inlet area to facilitate its cooling by the entering air. A centrifugal blower impeller is mounted on the blower shaft, with its inlet coinciding with the inlet opening. The impeller is surrounded by a cage shaped heating element consisting of a multitude of inter connected strips of a resistance alloy, which are supported on two plastic rings. The circumferential air outlet is provided with a multitude of guide vanes that help direct and diffuse the air emanating from the heating elements while preventing contact with the heating element from the outside.