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:
Mar. 13, 2012
Filed:
Jan. 27, 2010
Paul Dawson, Malmesbury, GB;
Scott Andrew Maguire, Malmesbury, GB;
Andrew Martin Mitchell, Malmesbury, GB;
Spencer James Robert Arthey, Malmesbury, GB;
Paul Dawson, Malmesbury, GB;
Scott Andrew Maguire, Malmesbury, GB;
Andrew Martin Mitchell, Malmesbury, GB;
Spencer James Robert Arthey, Malmesbury, GB;
Dyson Technology Limited, Malmesbury, GB;
Abstract
A surface treating head assembly for an appliance such as a vacuum cleaner includes a head and a drivable agitator in the form of a brush bar, rotatably housed in the head. A cam arrangement is rotatably driven in the head. The cam arrangement includes a pair of cams, each having a plurality of cam faces, each cam face corresponding to respective predetermined vertical positions of the brush bar. Thus, the height of the brush bar is selectively controllable between the predetermined positions, such that the depth of penetration of the bristles of the brush bar may be optimized for different types of carpet.