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. 02, 2013
Filed:
Feb. 05, 2010
Xavier Donnette, Soleymieu, FR;
Jose Camba, Ambrieu en Bugey, FR;
Gaetan Painchaud, Francheville, FR;
Sylvain Lanzi, Chirens, FR;
Xavier Donnette, Soleymieu, FR;
Jose Camba, Ambrieu en Bugey, FR;
Gaetan Painchaud, Francheville, FR;
Sylvain Lanzi, Chirens, FR;
Abstract
The device includes a membrane slidably mounted in a metering chamber, the membrane including a first sealing element forming a check valve, and a second sealing element enabling the membrane to slide in a leaktight manner relative to the metering chamber. The first and second sealing elements are made of a material that is relatively flexible, the membrane also including a rigid portion made of a material that is more rigid than the material of the first and second sealing elements.