Apparatus and method for measuring inflation pressure

Details Apparatus and method for measuring inflation pressure Apparatus and method for measuring inflation pressure

2006-11-28

2006-11-28

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Tire, tread or roadway

Tire inflation testing installation

C073S146000, C073S146300

Reexamination Certificate

active

07140244

ABSTRACT:
An apparatus for measuring inflation pressure of a resilient-walled vessel, e.g. of a vehicle tire associated with an inflation valve and with a rim. The apparatus has an external, portable member and a pressure sensing member, which is separate from the portable member and is located within the tire so as to be exposed to the inflation pressure. The portable member is capable of generating and transmitting energy to the pressure sensing member and in response to receive and to process a pressure signal, which depends on the inflation pressure and upon processing of the pressure signal to derive therefrom an inflation pressure value. The pressure sensing member is capable, upon receiving energy from the portable member, to generate the pressure signal and to transmit it to the portable member. The portable member has a probe that creates an electrical contact between the portable member and the pressure sensing member upon establishing physical contact between the probe and the valve. The pressure sensing member creates n electrical contact with the rim and with the valve.

REFERENCES:
patent: 4308520 (1981-12-01), Darlington
patent: 4330774 (1982-05-01), Doty
patent: 4615211 (1986-10-01), Kolm et al.
patent: 5163320 (1992-11-01), Goshima et al.
patent: 5335541 (1994-08-01), Sharpe
patent: 5394343 (1995-02-01), Tsao

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