Measuring and testing – Tire – tread or roadway – Tire inflation testing installation
Patent
1994-07-20
1996-08-06
Chilcot, Richard
Measuring and testing
Tire, tread or roadway
Tire inflation testing installation
731463, 731464, 737291, 340442, 340445, 200 6125, B60C 2302, B60C 2300, H01H 3524
Patent
active
055422934
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.
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Iwase Atsushi
Matsui Kazuma
Nomura Ken
Tsuda Hiroshi
Amrozowicz Paul D.
Chilcot Richard
Nippondenso Co. Ltd.
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