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:
May. 07, 2002
Filed:
Nov. 13, 2000
Robert P. Porper, Somers, NY (US);
Robert G. Dickie, Newmarket, Ontario, CA;
Other;
Abstract
A brush head portion for an electric toothbrush is adapted to be removably connected to a power handle. The brush head portion comprises a pair of opposed bristle head portions. A longitudinal hollow shaft and terminates at a fixed cover portion which is shaped and dimensioned so as to overlie the pair of opposed bristle head portions, which are mounted on a stem. A longitudinal drive shaft extends through the hollow shaft, and transmits rotational driving force to a crank formed at the outer end of the drive shaft. A drive means is located between each of the bristle head portions and the underside of a respective region of the fixed cover portion, and is mounted on the crank so as to have reciprocating motion imparted thereto as the crank is driven. A wedge is formed on the underside of the fixed cover portion in the region overlying each respective bristle head portion, or on the top surface of each respective block. When a reciprocating motion is imparted to the drive means by the crank, the drive means is moved from side-to-side so as to slide from the top towards the bottom of one of the wedges and from the bottom towards the top of the other of the wedges, so as to impart an oscillatory movement to the pair of opposed bristle head portions.