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:
Aug. 23, 1977
Filed:
Oct. 29, 1976
Applicant:
Inventors:
David E McDowell, Grand Rapids, MI (US);
Robert A Yonkers, Grandville, MI (US);
Assignee:
Bissell, Inc., Grand Rapids, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47L / ;
U.S. Cl.
CPC ...
15366 ; 15182 ; 15383 ;
Abstract
A vacuum cleaner is provided with a suction nozzle and a cylindrical rotary brush. The brush includes a plurality of generally longitudinally extending rows of uniform bristle tufts. Alternate tufts in alternate rows are spaced at about twice the distance as the remaining more closely spaced tufts and prepare the carpet for sweeping by the latter.