Temperature compensated fill valve/pressure switch

Details Temperature compensated fill valve/pressure switch Temperature compensated fill valve/pressure switch

1979-12-05

1982-06-15

Rubinson, Gene Z.

Electricity: circuit makers and breakers

Special application

Pneumatic tire inflation responsive

29622, 731468, 337320, H01H 3524

Patent

active

043352839

ABSTRACT:
A device (10) for filling a pneumatic tire and sensing the air pressure therein has a check valve (20) disposed within a valve stem (126b) and a pressure sensing switch which is temperature compensated to adjust for air pressure changes within the tire due to changes in ambient temperature. Substantially perfect compensation can be achieved, within a limited range of operation, whereby the set point pressure versus temperature characteristic will track with the related tire pressure versus temperature characteristic. A sealed capsule (110) is assembled and pressurized prior to installation within the device. A manual set point calibration feature is provided. The switch can be employed independently of, as well as in conjunction with, the check valve.

REFERENCES:
patent: 3487348 (1969-12-01), Linsalato
patent: 3743801 (1973-07-01), Brobeck et al.
patent: 3889077 (1975-06-01), Hayashi
patent: 3908105 (1975-09-01), Schuler
patent: 4117281 (1978-09-01), Leimbach
patent: 4177671 (1979-12-01), Ichihara et al.
patent: 4181831 (1980-01-01), Mayer et al.

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