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. 23, 2002
Filed:
Dec. 19, 2000
Applicant:
Inventor:
Gregory John McDougall, Kowloon, HK;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A46B 1/302 ;
U.S. Cl.
CPC ...
A46B 1/302 ;
Abstract
An electric toothbrush has a balanced mass provided on a shaft extension that rotates freely about a longitudinal axis, inside a cavity in a brush head The shaft extension and the brush head are flexibly coupled to a drive shaft and to a remote end of a shank respectively. When the shaft is rotated by an electric motor in a handle, of the toothbrush, an off-set stub axle, effectively at a remote end of the shaft extension and fitted to a bearing in the brush head, causes the brush head to vibrate. The shank is not caused to vibrate to any extent.
McDougall, Gregory. (2002). Electric toothbrush (U.S. Patent No. 6421866). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6421866
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile