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:
Nov. 18, 2014
Filed:
Feb. 03, 2010
Rémy Lefebvre, Radepont, FR;
Rémy Lefebvre, Radepont, FR;
Milton Roy Europe, Point Saint Pierre, FR;
Abstract
A hydraulically-controlled diaphragm pump including a pump chamber formed between a pump head and a pump body, a constant volume intermediate hydraulic chamber formed in the pump body and including a piston driven with reciprocating motion inside the intermediate chamber, a leak compensation volume for compensating leaks from the intermediate chamber being connected thereto by a top-up channel via a free check valve that is not rated and that passes fluid towards the working chamber. The check valve and at least a portion of the compensation volume are housed in a body fitted to the pump body at the high point of the intermediate hydraulic chamber in the working position of the pump.