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. 18, 2006
Filed:
Dec. 11, 2001
Jean-louis Bougamont, Eu, FR;
Pierre Dumont, Eu, FR;
Jean-Louis Bougamont, Eu, FR;
Pierre Dumont, Eu, FR;
Rexam Dispensing Systems, , FR;
Abstract
A micropump provided with a cylindrical body () containing a measuring chamber () defined by a piston () and communicating firstly with a tank via an inlet orifice () provided with an inlet valve, and secondly with the outside via an outlet orifice () provided with an outlet valve, the micropump being characterized in that the piston () is connected to an external reciprocating actuator, and in that at least one of said valves is constituted by a valve member () suitable for being driven in translation by friction contact with said piston () successively in one direction and then in the other, and whose stroke inside the chamber () is shorter than the stroke of said piston.