Patent ID: 7642903

Claim:
A device for detecting low tire pressure for a tow trailer, comprising: a switch supported on a base plate and positioned proximate at least one tire of the tow trailer, said switch switchable between an open position and a closed position, said switch being a normally open switch; said base plate configured to be mounted adjacent to an axle of the tow trailer; a mounting clamp mounted around the axle to support the base plate; said mounting clamp having two ends; said two ends releasably secured to said base plate; an actuating rod support member mounted to the base plate and pivotally connected to said switch, for supporting an actuating rod that is operable to switch said switch between said open position and said closed position; said actuating rod surroundably mounted to one end of the actuating rod support member and tightened by a strap on a side of the base plate opposite the switch; said actuating rod extending downward to a predetermined point proximate the ground surface under the tow trailer; and a warning device connected to said switch and operable when said switch is in said closed position; wherein when said actuating rod engages the surface under the tow trailer when the tire pressure of the tow trailer drops to a determined level said actuating rod switches said switch to said closed position.