(under subclass 28) Devices include means for giving warning when the pressure within the pneumatic tire of an automobile or other vehicle is either raised above or reduced below the normal pressure, either by puncture, leakage, or otherwise.
SEE OR SEARCH THIS CLASS, SUBCLASS:
24, and 137+, for signaling devices, per se.
SEE OR SEARCH CLASS
73, Measuring and Testing,
146.2+, for a fluid pressure gauge combined with a vehicle, tire or tire stem. 200, Electricity: Circuit Makers and Breakers,
61.22+, for mere circuit-controllers associated with a tire.
340, Communications: Electrical,
442+, for electrically operated tire deflation alarms.
