Measuring and testing – Tire – tread or roadway – Tire inflation testing installation
Patent
1993-02-25
1994-10-18
Chilcot, Jr., Richard E.
Measuring and testing
Tire, tread or roadway
Tire inflation testing installation
73708, 73728, 336 30, B60C 2302
Patent
active
053557140
ABSTRACT:
A pressure sensor includes a diaphragm having a magnetic film fixed to one side thereof. The diaphragm is arranged to displace depending on a pressure differential applied thereacross to change an inductance of a coil which is arranged close to the magnetic film with a predetermined gap therebetween. An alternating current is supplied to the coil to be modulated by the inductance of the coil so that the pressure differential across the diaphragm is converted into an electric signal. A monitored pressure is derived based on this converted electric signal.
REFERENCES:
patent: 1718494 (1929-06-01), Schurig
patent: 4412454 (1983-11-01), Yamashita et al.
patent: 4662226 (1987-05-01), Wang
Miyazawa Hideki
Murakami Fumiaki
Nakano Yoshihisa
Suzuki Masaru
Chilcot Jr. Richard E.
Felber Joseph L.
Nippondenso Co. Ltd.
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