Communications: electrical – Selective – Having indication or alarm
Patent
1979-04-19
1981-08-11
Caldwell, Sr., John W.
Communications: electrical
Selective
Having indication or alarm
200 6125, 200 83L, 200 83P, 335205, B60C 2304, H01H 3534, H01H 3600
Patent
active
042837065
ABSTRACT:
A tire puncture detecting device having a pressure chamber defined by a flexible diaphragm and held in communication with the interior of the tire, an atmospheric chamber communicating with the atmosphere, and a spring plate member disposed in the pressure chamber and supporting on the front face thereof a magnet and on the rear face thereof a central portion of the flexible diaphragm. The spring plate member is normally maintained in a retracted position under the air pressure in the pressure chamber against the bias of a resilient member disposed rearwardly of the spring plate member. When a reduction in the air pressure in the pressure chamber exceeds a predetermined degree, the spring plate member buckles so as to quickly project forwardly under the force of the resilient member. In this manner, the magnet supported on the spring plate member is moved closer to an alarm circuit switch located in front of the device and energizable by magnetic force, thereby actuating the switch. Puncturing of the tire is thus detected rapidly and reliably.
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Hayashi Kiyotaka
Kamiya Tadashi
Kimura Shigeo
Burt Pamela S.
Caldwell Sr. John W.
Honda Giken Kogyo Kabushiki Kaisha
Nowicki Joseph E.
Shortley John L.
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