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, 2006
Filed:
Nov. 15, 2002
Rainer Martin, Efringen-Kirchen, DE;
Rainer Martin, Efringen-Kirchen, DE;
Endress + Hauser GmbH + Co. KG, Maulburg, DE;
Abstract
The pressure sensor of the invention, with an internal hydraulic system for pressure transfer, has a seal enabling an exact fill volume for the hydraulic system. The pressure sensor includes: a platform; at least one separating membrane, which, with the platform, encloses a pressure chamber; a hydraulic path inside the platform, which communicates with the pressure chamber; a platform blind hole in a surface of the platform, with, extending from the end of the platform blind hole, a canal, which communicates with the hydraulic path, wherein the diameter of the canal is smaller than the diameter of the platform blind hole, so that a first abutment surface is formed between the platform blind hole and the canal; a sealing element insertable into the platform blind hole and having a second abutment surface complementary to the first abutment surface and having a radially flexible, lateral surface; and an expander, which can be brought into engagement with the sealing element, in order to expand the lateral surface of the sealing element radially.