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. 15, 2012
Filed:
Nov. 27, 2007
Frank Hegner, Lörrach, DE;
Andreas Rossberg, Bad Säckingen, DE;
Frank Hegner, Lörrach, DE;
Andreas Rossberg, Bad Säckingen, DE;
Endress + Hauser GmbH + Co. KG, Maulberg, DE;
Abstract
An elastic ceramic body and a pressure sensor. The elastic ceramic body comprises: a base body of an elastic ceramic material; and a cover layer, which covers at least one section of a surface of the base body, wherein the cover layer is of a material other than that of the base body, and the cover layer comprises microcrystalline AlO(corundum). The cover layer is preferably prepared in a sol gel process. The pressure sensor, comprises: a disk-shaped measuring membrane, which is embodied as an elastic ceramic body according to the above definition; and at least one membrane support body, on which the measuring membrane is connected at its edge region along an encircling joint to form a pressure-tight measuring chamber between the membrane support body and the measuring membrane.