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:
Feb. 11, 1997
Filed:
Dec. 19, 1995
Christian Lemaire, Nanterre, FR;
Francedilla.ois Kalaydjian, Rueil-Malmaison, FR;
Institut Francais, du Petrole, Rueil Malmaison, FR;
Abstract
A selective pressure tap is used for measuring, at a point of a porous sample containing at least two distinct fluids such as water and oil for example and placed in a case or sheath, the pressure exerted selectively by one of the fluids. It comprises a body provided with a central channel that is externally threaded over part of its length so as to be screwed into a hole provided through the sheath. The body of the pressure tap comprises a ferrule externally provided with 0-ring seals. The end face of the ferrule is suited for pressing closely against the wall of the sample, during the screwing operation, one or several semipermeable membranes permeable to the fluid in question. The central channel communicates with a pressure detector through a pipe.