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:
Oct. 07, 1986
Filed:
Oct. 22, 1984
Applicant:
Inventor:
Edwin H Frohbieter, Lincoln Township, Berrien County, MI (US);
Assignee:
Whirlpool Corporation, Benton, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47L / ;
U.S. Cl.
CPC ...
15340 ; 180 193 ;
Abstract
A vacuum cleaner having an improved power drive utilizing a ball disc transmission. In one form, the transmission is self-centering for automatic return thereof to a position wherein the wheel drive is effectively locked. The transmission is arranged to permit free wheeling when desired by suitable manipulation of the control provided for controlling the transmission. In another illustrated form, the transmission is arranged to provide free wheeling when the transmission is returned to a minimum speed arrangement. The system provides a smooth, accurately controllable power drive of the vacuum cleaner.