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. 03, 2000
Filed:
Nov. 20, 1998
David W Berg, Plymouth, MN (US);
Bruce F Field, Golden Valley, MN (US);
Earl O Krueger, Jr, Eagan, MN (US);
Tennant Company, Minneapolis, MN (US);
Abstract
A tubular type brush for use in a cleaning machine includes a generally cylindrical driver tube adapted to be rotated about its axis for use in cleaning an adjacent floor surface. The driver tube has an exterior surface with circumferentially and axially located bristles extending outwardly therefrom. The bristles extend, when the driver tube is in an at rest position, in a direction which is closer to parallel with the driver tube exterior surface than perpendicular to the driver tube exterior surface. The bristles have tips which move outwardly from the driver tube exterior surface as the tube rotates, with the degree of the outward movement being dependent, at least in part, upon rotary speed of the driver tube.