Bacon & Thomas, PLLC
Tire pressure gauge with lighting means
A tire pressure gauge with a light device. The device includes a cylindrical casing, a light penetrable scale mounted in the casing, a spring device mounted in the casing for biasing the scale in the casing, a piston movable in the casing, and a battery and lamp assembly which may be detachably fastened to one end of the scale outside the casing or provided inside the casing. The device further includes an air nozzle fixedly fastened to one end of the casing and adapted for being, engaged with the air valve of a vehicle tire to guide air from the vehicle tire into the casing to move the piston, causing the piston to force the scale out of the casing to an extent indicative of the pressure of the vehicle tire.
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inventional inventional inventional
Tien-Tsai
Huang