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:
Sep. 13, 1983
Filed:
Feb. 22, 1982
James W Keane, White Bear Lake, MN (US);
Erwin E Nordeen, St. Paul, MN (US);
Whirlpool Corporation, Benton Harbor, MI (US);
Abstract
A vacuum cleaner beater brush having string guard means for preventing string picked up by the brush from damaging the bearings and drive for rotating the brush. In the illustrated embodiment, the drive is a cog belt drive with a sprocket associated with the rotatable brush. The ends of the brush are rotatably journaled in bearings carried by the nozzle housing of the vacuum cleaner structure. The string guards are defined by spaces provided in the brush assembly defining zones of minimum energy to which zones the picked-up string tends to migrate in the rotation of the brush. The string guard spaces, in the illustrated embodiment, are defined by annular recesses and shoulders located suitably to prevent movement of the string to the bearings and cog belt drive sprocket.