Electric pneumatic pressure sensor

Details Electric pneumatic pressure sensor Electric pneumatic pressure sensor

1987-04-10

1988-11-29

Orsino, Joseph A.

Communications: electrical

Selective

Having indication or alarm

200 6125, 731465, B60C 2302

Patent

active

047885254

ABSTRACT:
A vehicle tire pressure indicator having a housing defining an inner chamber, an electrically insulated contact tube communicating with the inner chamber, a piston movable toward and away from the contact tube guided by the inner chamber, and an elastic seal engaged with the piston and movable in its entirety with the piston along an inner surface of the inner chamber to seal the inner chamber. A tube communicates the contact tube with the vehicle tire so that a pressure in the inner chamber corresponds to the tire pressure. The contact tube is electrically connected to alarms mounted in the cabin of the vehicle. On low pressure, the piston biases into contact with the contact tube to thereby activate the alarms to warn a truck driver of low tire pressure. The vehicle tire pressure indicator is easily mounted in the center rim of a tire by a truck driver.

REFERENCES:
patent: 2040891 (1936-05-01), Wright et al.
patent: 2948256 (1960-08-01), Tapp
patent: 3987407 (1976-10-01), Bruner
patent: 3999431 (1976-12-01), Makarainen
patent: 4090172 (1978-05-01), Vesnic

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