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:
Apr. 25, 1989
Filed:
Aug. 23, 1982
Clarence J Hickman, Ft. Collins, CO (US);
Teledyne Industries, Inc., Fort Collins, CO (US);
Abstract
An oral hygiene device includes a supply of liquid, a pump for propelling the to a point of use. A housing defines a cavity within which the pump is seated and which also includes an inlet and an outlet. The pump is of a kind having a hollow body with a chamber defined in a first portion, a piston disposed for reciprocation in that chamber and a motor to drive the piston and thereby the pump. A second portion of the body is coupled to an outlet. A third portion of the body is coupled to an inlet. A first check valve is at least effectively disposed in a third portion of the body and poled to pass liquid only from the inlet to the chamber. A second check valve is at least effectively disposed in the second portion of the body and is poled to pass liquid only from the chamber to the outlet.