1
Perry W Thomas, Rex O Bare, Earl F Robinson, Wayne Hayob: Tire pressure warning system. Jack Taylor, Knobbe Martens Olson & Bear, March 29, 1988: US04734674 (75 worldwide citation)

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 ...


2
Trevor O Jones: Tire pressure warning system. TRW, Yount & Tarolli, March 4, 1986: US04574267 (75 worldwide citation)

A tire inflation pressure detector which senses changes in tire pressure by detecting the changes in the spring rate of the tire which result from changes in tire pressure. An accelerometer (40) is mounted on a vehicle suspension component adjacent the tire. The accelerometer is sensitive to vertica ...


3
Victor Mendez, Todd D Eberwine: Method of learning tire pressure transmitter ID. Delco Electronics, Mark A Navarre, March 18, 1997: US05612671 (64 worldwide citation)

A low tire pressure warning system has a pressure sender and a radio transmitter in each tire, and a vehicle mounted receiver includes a microprocessor controller programmed to automatically learn the IDs of the tire senders. An ID message and pressure report is transmitted from each sender and reco ...


4
Harry J Shumway: Low tire pressure warning device. DeLio and Montgomery, September 13, 1977: US04048614 (49 worldwide citation)

A pressure detector and radio transmitter component of a tire pressure warning system for a wheeled vehicle, with the component being associated with a tubeless vehicle tire by being mounted on the wheel rim on which the tire is mounted so that the component is wholly located in the sealed space for ...


5
William A Barabino: Tire pressure warning system. Safety Research & Engineering Corporation, Morse Altman Oates & Bello, January 10, 1978: US04067376 (24 worldwide citation)

Excessively high or low tire pressure is detected automatically with a warning signal generated for the operator. A device is attached to each wheel and includes a spring-loaded piston mounted for reciprocation in a cylinder formed in the device. The cylinder is provided with a porting arrangement w ...


6
Ben M Schiavone: Strapping, seal and counterweight device for mounting tire pressure warning system sensors on tire rims. Sharon Steel Corporation, Frease & Bishop, November 25, 1980: US04235184 (23 worldwide citation)

A mounting device is provided for mounting a low tire pressure sensor of known type, which may include a deflectable finger and a self-contained and powered ratio transmitter, on the tire rim of a vehicle wheel. The mounting device consists of three simple coordinated metal strapping, strapping seal ...


7
Gregory H Piesinger: Low tire pressure warning system. January 16, 2001: US06175301 (22 worldwide citation)

A low tire pressure warning system includes a tire pressure sensor constructed to be mounted within each of the tires on the wheels of a vehicle. Each tire pressure sensor includes a pressure switch coupled to a transmitter and a battery, with the pressure switch being constructed to connect the bat ...


8
Enabnit Robert S: Signalling system for low tire condition on a vehicle. The Goodyear Tire & Rubber Company, May 23, 1972: US3665387 (20 worldwide citation)

A fail-safe low tire pressure warning system adaptable for any number of wheels of a vehicle and providing dashboard indications of system operation and low pressure conditions while the vehicle is in motion. A pair of coils mounted on each wheel are interconnected under normal conditions by a switc ...


9
Jan Ballyns: Pressure alarm system for motor vehicle tires. Fetherstonhaugh & Co, December 26, 1989: US04890090 (18 worldwide citation)

A pressure sensitive electrical switch consists of a housing in which two pressure chambers are formed. The pressure chambers are separated by a flexible diaphragm. The flexible diaphragm is made from electrical conductive material. Conductors extend into the housing to provide terminals which are s ...


10
Akira Suzuki: Tire pressure warning system. Fuji Jukogyo Kabushiki Kaisha, McGinn IP Law Group PLLC, November 7, 2006: US07132938 (18 worldwide citation)

A tire pressure warning system has an air pressure detecting device 3, a low pressure warning display unit 5 and a fuel consumption deterioration warning display unit 4. The air pressure detecting device 3 detects an air pressure of each tire 2 of a vehicle. The low pressure warning display unit 5 w ...