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. 13, 2001
Filed:
Jul. 06, 1998
Fujikoki Corporation, Tokyo, JP;
Abstract
The object of the present invention is to provide a pressure sensor comprising a pressure sensing element of a plurality of resistors on a semiconductor board, wherein said pressure sensing element is fixed inside the housing firmly and airtightly. A pressure sensor,comprising a housing,made of metal material, and a pressure sensing element mounted on a semiconductor board,positioned in the interior of said housing for sensing pressure, wherein said housing,comprises a liquid induction hole,, an inner area connecting to said liquid induction hole and having an opening in an upper portion, and an annular protrusion 11,formed in the peripheral of an opening of said liquid induction hole at a bottom portion of said inner area, characterized in that said pressure sensing element,is welded airtightly to said protrusion,of said housing,through a seat,comprising an opening,at the center thereof formed of a pressure sensing element mounting member,-,and a stem connecting member,, and a stem,having an opening,at the center thereof.