Tire pressure communication devices

Details Tire pressure communication devices Tire pressure communication devices

B - Operations, Transporting

60

C

73/129, 340/145.

B60C 23/04 (2006.01)

Patent

CA 1179039

TIRE PRESSURE COMMUNICATION DEVICES ABSTRACT OF THE DISCLOSURE Disclosed are devices for transmitting signals from a rotatable tire to a stationary recei- ver which correspond to the internal pressure of the tire. In one embodiment, a Bourdon tube communicates with internal tire pressure to regulate the magnetic gap of an electromagnetic induction configuration. Changes in the magnetic gap result in corresponding changes in an output signal strength. In another embodiment of the invention, a bellows is provided in communication with tire pressure for regulating the position of the core of an LVDT. The core position and, accordingly, the output of the LVDT corresponds to tire pressure. In yet another embodiment, strain gauges or other appropriate electrical signal genera tors are connected to the tire and interconnected with a rotating race. A plurality of ball bearings are maintained in a preloaded condition between the rotating race and a stationary race, the latter race communicating signals to a tire pressure meter or the like.

440135

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