Over inflation and under inflation indicator for tires

Details Over inflation and under inflation indicator for tires Over inflation and under inflation indicator for tires

1976-05-21

1978-01-03

Yasich, Daniel M.

Signals and indicators

Vehicle

Tire inflation or deflation

137227, B60C 2304

Patent

active

040660338

ABSTRACT:
A device for indicating when the air within a tire is above or below an optimum pressure range, comprising a housing having a bore therein in which a piston is movable. The piston is spring biased toward one end of the bore and is normally held in a medial sealing position by air pressure from within the tire. In such sealing position, a sealing ring on the piston engages a sealing section of the bore to prevent movement of air along the bore; when the air pressure exceeds or falls below the optimum range, the sealing ring moves over a relieved portion of the bore and allows air to move along the latter to actuate a whistle carried by the piston. An electronic device senses the whistle and signals the operator.

REFERENCES:
patent: 1417168 (1922-05-01), Harris
patent: 2794343 (1957-06-01), Lagrange
patent: 3224409 (1965-12-01), Fenger et al.
patent: 3738308 (1973-06-01), Barabino
patent: 3739637 (1973-06-01), Novak

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