04734674 is referenced by 75 patents and cites 38 patents.

A tire pressure warning system, including a valve stem-mounted tire pressure detector, including means for sensing the tire pressure and means for transmitting an encoded signal when the tire pressure drops below a predetermined level, and a receiver that can receive and recognize the encoded signal, differentiate between various encoded signals, and provide a warning signal to the vehicle operator. The inside of the tire pressure detector is hermetically sealed; inside the sealed portion is a unique on/off switch that can be externally actuated without compromising the seal.

Title
Tire pressure warning system
Application Number
6/720709
Publication Number
4734674
Application Date
April 8, 1985
Publication Date
March 29, 1988
Inventor
Wayne Hayob
Lenexa
KS, US
Earl F Robinson
El Toro
CA, US
Rex O Bare
Irvine
CA, US
Perry W Thomas
Grandview
MO, US
Agent
Knobbe Martens Olson & Bear
Assignee
Jack Taylor
AL, US
IPC
H01H 35/24
B60C 23/00
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