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. 14, 1998
Filed:
Nov. 14, 1996
Applicant:
Inventor:
Kwok-Nam Shek, Hong Kong, HK;
Assignee:
Addway Engineering Limited, Hong Kong, HK;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A16B / ; A16B / ;
U.S. Cl.
CPC ...
15 221 ;
Abstract
A toothbrush has a thin, metal cam shaft rotatably driven about a central longitudinal axis. Tuft blocks are mounted in a head member and constrained to pivot about an axis of a support shaft. Upper sides of the tuft blocks each have a slot which fits somewhat loosely over the cam shaft. During use, the cam shaft causes upstanding ends of bristles to move from side to side.