Pressure switch for monitoring tire pressure, particularly of mo

Details Pressure switch for monitoring tire pressure, particularly of mo Pressure switch for monitoring tire pressure, particularly of mo

1989-03-24

1990-01-16

Crosland, Donnie L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340442, 200 6122, 200 80R, 200 83B, 200 83N, 116 34R, 731465, B60C 2300

Patent

active

048946397

ABSTRACT:
A pressure switch for monitoring a tire pressure of a motor vehicle tire is fastened to a wheel rim and is actuated by the inflating pressure in the tire. The pressure switch comprises a reference pressure chamber which is sealed off by an electrically conductive switching diaphragm in the direction of the tire, and carries a contact pin interacting with this diaphragm. The switching diaphragm has a mass which is controlled as a function of centrifugal force in response to tire rotation such that the switching point of the pressure switch can be changed automatically as a function of vehicle speed.

REFERENCES:
patent: 3760350 (1973-09-01), Johnson
patent: 4229728 (1980-10-01), Tremba

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