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:
Jul. 03, 1979
Filed:
Nov. 18, 1977
Applicant:
Inventor:
Helmut Schneider, Mainz, DE;
Assignee:
Werner & Mertz GmbH, Mainz, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47L / ;
U.S. Cl.
CPC ...
15366 ; 1514 / ; 15320 ; 15383 ;
Abstract
A rapid-rotation beater or soil-loosening roller for wet or dry carpet-cleaning apparatus which has a circular axial profile and a plurality of inclined angular projections defining between them annular grooves having widths of several millimeters. The roller is formed unitarily or at least in part of a shape-retentive (rigid) material and the grooves between projections lie along a cylindrical surface.