Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Tire pressure indicator
 A pressure gauge of a tire pressure indicator for a set of pneumatic tires of a vehicle includes a casing having a hollow adaptor to be attached to the pneumatic tire, an inlet and a finger piece for opening an inflating valve of the tire, and a signal generating device disposed in the casing. The signal generating device includes a pressure sensing unit which generates an analog voltage signal that varies in accordance with pressure imposed on the inlet, a signal converting unit for converting the analog voltage signal into a digital output signal, and an encoder unit for comparing the digital output signal of the signal converting unit with high pressure and low pressure limits of a predetermined normal operating pressure range, and for generating a coded signal which includes the digital output signal when the digital output signal is not within the operating pressure range. 
B B B B
B60C B60C B60C B60C
inventional inventional inventional inventional
Tien-Tsai
Huang