Puncture alarm device for a tire

Details Puncture alarm device for a tire Puncture alarm device for a tire

1975-12-15

1977-06-21

Waring, Alvin H.

Communications: electrical

Selective

Having indication or alarm

340224, 200 6109, B60C 2300

Patent

active

040315088

ABSTRACT:
In an automobile which uses a pneumatic tire, a puncture alarm device for one or more tires wherein a switching unit comprising conductive films formed on both the surfaces of an insulating material is disposed at the outer periphery of an air receiving portion of the tire, and when a metal piece or metal pile, such as a nail, sticks into the tire it penetrates through the switching unit and short-circuits the conductive films on both the surfaces thereof so that an alarm is issued.

REFERENCES:
patent: 1096526 (1914-05-01), Brunig
patent: 2738495 (1956-03-01), Hoff

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