B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
152/178, 325/44,
B60C 23/04 (2006.01) B60C 23/00 (2006.01)
Patent
CA 2024821
A tire valve including means for generating a wireless transmittable pressure drop indicating signal is provided. The valve comprises a valve foot attachable to a tire rim and a valve shaft extending from said valve foot. A signal generating means is mounted on said valve foot at a valve foot side remote from said valve shaft. Said signal generating means comprises a reference pressure chamber which is pressurized with a desired pressure. A diaphragm defines one end of said reference pressure chamber and is in communication with the tire pressure to be controlled. Further, said signal generating means includes a transmitter means, a power supply means, and switching means which is regularly held in an opened position, but which is closed with a diaphragm deflection, whereupon the transmitter means is activated. The transmitter circuit comprises a sequence control which terminates a signal transmission after a short duration thereof and resets the transmitter means in a state such that it is ready to become activated again upon opening and reclosing of said switching means.
Achterholt Rainer
Alpha-Beta Electronics Ag
Smart & Biggar
LandOfFree
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