B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
340/145.1
B60C 23/04 (2006.01) B29C 73/22 (2006.01) B60C 17/10 (2006.01) B60C 23/06 (2006.01) G01B 7/16 (2006.01) G01L 17/00 (2006.01)
Patent
CA 1106028
PROFILE SENSING DEVICE AND METHOD FOR BODIES (Abstract of the Disclosure) Apparatus and method particularly adapted for detecting the profile deflection condition in a wheel struc- ture of the type comprised of a pneumatic tire mounted on a wheel rim and which deflection may be caused by tire under inflation or overloading. A sensing and actuating structure constructed from flexible material having high flex fatigue characteristics to include a body portion and a profile sensor is conveniently mounted to the drop center portion of the rim such that the profile sensor extends into the tire cavity. The dimensioning of the profile sensor is such that it is positively engaged by the inside of the tire wall when tire profile deflection reaches an amount greater than a predetermined maximum amount due to overloading or under inflation, to thereby cause flexure in the profile sensor generally inwardly toward the rim. This flexure causes a flexure reaction in the sensing and actuating structure body portion also generally inwardly toward the rim and the body portion houses a small radio transmitter and a piezoelectric device or generator. The piezoelectric device is configured and disposed such that the flexure reaction of the body portion in response to flexure of the profile sensor causes an electrical discharge therefrom. This electrical discharge is electrically interconnected to the radio transmitter for selectively causing energization thereof. The radio signal thus selectively transmitted is received by a receiving unit spaced remote from the wheel to cause energization of con- venient indicating means located within the vehicle itself for showing that tire deflection greater than a predetermined maximum amount has been detected.
300258
Luzsicza Steven O.
Pauer Lyle A.
Snyder Daniel S.
Gould Inc.
Sherman
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