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. 21, 1989
Filed:
Dec. 14, 1988
Applicant:
Inventor:
Alain Laziou, Romilly S/Andelle, FR;
Assignee:
Dosapro Milton Roy, , FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ; F04B / ;
U.S. Cl.
CPC ...
417 63 ; 417395 ; 417413 ; 92 9 / ;
Abstract
The groove (13) for detecting the presence of a fluid between the membranes (1, 2) and indicating that one or other of them has broken, is profiled so as to be bullet-shaped, thereby preventing the membranes from being extruded into the groove under the effect of pumping pressure.