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:
Aug. 01, 1995
Filed:
Apr. 04, 1994
Jean-Paul Papin, Creteil, FR;
PCM Pompes, Vanves, FR;
Abstract
Diasphragm pump having a delivery rate which can be continuously adjusted between a zero value and a maximum value, comprising: a continuously rotating eccentric drive member (6); a connecting rod (5) with a connecting-rod big end (11-14) fitted with a bearing (10) receiving, so as to rotate freely, the member (6) and the other end of which is coupled to a central area of the diaphragm (2); releasable coupling means in order to couple, in a selective manner, the connecting-rod big end to the member (6) during a desired fraction of stroke, which can be continuously adjusted by adjustment means (16-19). The connecting-rod big end is fitted with at least one slide (11) extending substantially in the prolongation of the connecting rod (5) on the opposite side from the diaphragm (2) and capable of supporting the bearing (10) so as to slide freely in relation to the connecting-rod big end, and elastic return means (15) are provided in order to hold the bearing (10) at the bottom of the slide in the absence of counterforce exerted by the eccentric member on the bearing, the elastic return means acting on the bearing on the opposite side from the connecting rod.