Tire inner pressure drop alarming service

Details Tire inner pressure drop alarming service Tire inner pressure drop alarming service

1979-02-15

1981-11-10

Caldwell, Sr., John W.

Communications: electrical

Selective

Having indication or alarm

731465, 200 6125, B60C 2302

Patent

active

043001181

ABSTRACT:
A tire inner pressure drop alarming device comprises an oscillation section mounted on a vehicle body in the vicinity of a vehicle wheel, a resonance section mounted on a peripheral portion of a tire and including a resonance coil, a signal processing and alarming section mounted on the vehicle body in spaced relation with the vehicle wheel, and a coaxial cable connecting the oscillation section and the signal processing and alarming section. The resonance coil has a major length measured in the direction of rotation and longer than a minor length of the resonance coil in a direction perpendicular to the direction of rotation. The ratio of the minor length to the major length ranges from 0.2 to 1.0.

REFERENCES:
patent: 2894246 (1959-07-01), DeGraffenried
patent: 3092806 (1963-06-01), Field
patent: 3602884 (1971-08-01), Brumbelow
patent: 3895347 (1975-07-01), Takusagawa et al.
patent: 4072927 (1978-02-01), O'Neil
patent: 4180795 (1979-12-01), Matsuda et al.

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