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:
May. 20, 2008
Filed:
Oct. 27, 2006
Fadhel Rezgui, Chatillon, FR;
Fadhel Rezgui, Chatillon, FR;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
Membrane () of a shell () of a pressure sensor, having an upper and lower chamber (), wherein the membrane is made by a support wall () and a cap () having an upper and lower sheets (), the support wall having a central aperture (), the support wall separating but for its central aperture the lower from the upper chamber, the lower sheet () having a central aperture (), edges of the central apertures () of the support wall () and of the lower sheet () respectively being welded to one another, peripheries () of the upper and lower sheet () being welded to one another so that a volume () is present between said upper and lower sheets (), said volume being in the upper chamber () and communicating through the central apertures () of the support wall () and of the lower sheet () respectively, with the lower chamber ().