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:
Oct. 02, 2012
Filed:
Jun. 03, 2008
Bjorn Erik Seeberg, Oslo, NO;
Bjorn Erik Seeberg, Oslo, NO;
Presens AS, Oslo, NO;
Abstract
A differential pressure sensor for measuring a pressure difference between two high-pressure environments is comprised of a sensor block including internal, oil-filled channels leading to an internally positioned differential pressure sensor element. Two process diaphragms are provided for transferring pressure from the high-pressure environments for isolating two distinct internal oil channels from the high-pressure environments. In order to achieve small internal oil volumes in the sensor block, additionally two separating discs, which initially separate between the two internal oil channels, are positioned in fluid communication with the high-pressure environments in order to block for the pressure from the high-pressure environments against the oil channels 'from behind.' The separating discs bear against abutment faces having small openings into the internal oil channels. The separating discs are preferably given a pre-tension, and the abutment faces are then shaped correspondingly having a slightly convex shape. Preferably, separating discs with no corrugations are used.