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:
Jun. 11, 2012
Filed:
Jan. 04, 2011
Gary Dean Ragner, Gainsville, FL (US);
Gary Dean Ragner, Gainsville, FL (US);
Tacony Corporation, Fenton, MO (US);
Abstract
A vacuum cleaner power head () for vacuum cleaning and having two counter rotating agitatorsand. Motor () rotates agitators () and () through transmission (), and also rotates suction fan () to provide suction air to the rotary brush agitators. Exterior housingand inner housing () provide air suction passageways to direct suction air through fan () and out of the housing to a dirt collection bag (). Self-propelled function is provided by using user force on handle () to create differential contact friction between the two counter-rotating rotary brush agitators so that a net traction force is generated that propels power head () in the direction the user is pushing.