Wheel-mounting tire pressure gage with failsafe features

Details Wheel-mounting tire pressure gage with failsafe features Wheel-mounting tire pressure gage with failsafe features

1979-11-19

1981-02-03

Gill, James J.

Measuring and testing

Tire, tread or roadway

Tire inflation testing installation

73738, G01L 1700, B60C 2304

Patent

active

042480809

ABSTRACT:
A tire pressure gage for integral mounting on the wheel of an aircraft tire is provided with failsafe features to reduce the likelihood of sudden tire pressure loss through catastrophic failure of the gage. A pressure relief valve vents the case when the threshold pressure is sensed to thereby preclude long-term pressurization of the case should a slow leak develop in the bourdon tube of the gage. A flow-actuated valve in the port leading from the tire to the bourdon tube, seals the tire against pressure loss through the gage when a fast leak is detected such as might occur upon rupture of the tube. The pressure relief valve includes an ejectable plug normally visible externally of the gage case, the presence or absence of the plug providing a positive indication of whether or not the gage case has been pressurized.

REFERENCES:
patent: 3335610 (1967-08-01), Nelson
patent: 3938393 (1976-02-01), Morgensen et al.
patent: 3969936 (1976-07-01), Lindsay

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