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:
Dec. 01, 1992
Filed:
Sep. 20, 1991
Masahide Kosugi, Toyota, JP;
Hitoshi Goto, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A pressure sensor for use in an internal combustion engine includes a diaphragm member having a cylindrical part and a pressure receiving part which is subjected to an axial motion in an axial direction of the diaphragm member when a pressure in an external environment is applied to the pressure receiving part, a pressure detection member having pressure distributing parts and a piezoelectric part for generating a signal indicative of the applied pressure when it is stressed in response to the axial motion of the pressure receiving part, and a pressure transfer member for transferring the motion from the pressure receiving part to the pressure detection member, the pressure transfer member including a spherical member capable of rolling relative to the diaphragm member in a direction perpendicular to the axial direction of the diaphragm member at a position between the pressure receiving part and the pressure detection member.