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:
Jan. 03, 2012
Filed:
Nov. 14, 2007
Gregory Clegg Spooner, Causeway Bay, HK;
Hoss Vong, Causeway Bay, HK;
Gregory Clegg Spooner, Causeway Bay, HK;
Hoss Vong, Causeway Bay, HK;
Hayco Manufacturing Ltd., Causeway Bay, HK;
Abstract
The invention relates to a mechanism for driving the head of an electric toothbrush. The mechanism includes a camrotatably driven by a motorand an elongate transfer mechanismhaving a receiverfor receiving the cam at one end and a mechanism for transferring oscillatory motion to a toothbrush headat the other end thereof. Camhas a projecting headwhich is received in a substantially rectangular apertureof the receiver. The long side of the substantially rectangular aperture has a length equal to or greater than the diameter of the circular motion of the projecting head, the short side has a length less than the long side of the rectangular aperture. Thus, in use, circular motion of the projecting head of the cam is converted into oscillatory pivoting motion of the transfer memberby action of the projecting headagainst the short sides of the substantially rectangular aperture. A tooth and gear arrangement for converting pivoting motion of the transfer memberinto rotational motion of the toothbrush headis also described.