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:
Aug. 06, 1996
Filed:
Jul. 20, 1994
Hiroshi Tsuda, Obu, JP;
Atsushi Iwase, Okazaki, JP;
Ken Nomura, Okazaki, JP;
Kazuma Matsui, Toyohashi, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A pressure detecting apparatus for detecting vehicle tire air pressure. In a cylindrical housing mounted axially in parallel with a tire wheel, a setting magnet, a rotor magnet and a reversing magnet are coaxially provided and the rotor magnet is supported by a shaft rotatably and axially movably in response to a tire air pressure introduced to a bellows in the housing. When the air pressure is normal, the rotor magnet is attracted by the setting magnet. When the air pressure is reduced, the rotor magnet is separated by the movement of bellows, rotated by the repulsion force of the reversing magnet and finally attracted to said reversing magnet. By this operation, position of the magnetic poles of the rotor magnet is reversed and this reversion is detected electrically by a magnetism detecting unit.