Signals and indicators – Vehicle – Tire inflation or deflation
Patent
1981-01-26
1983-03-08
Ruehl, Charles A.
Signals and indicators
Vehicle
Tire inflation or deflation
116271, 731468, B60C 2304
Patent
active
043757880
ABSTRACT:
A pressure equalizing valve for pneumatic tires including a visual display is described which is ideally suited for use with dual tires. A cylindrical housing accommodates a spring biased diaphragm mounted in a first chamber. The diaphragm carries a valve member thereon and acts as a sealing member or element to close two air passageways which are in communication with the dual tires in a conventional dual tire installation. The valve member closes the air passageways when a pre-adjusted and calibrated value of air pressure is lost by the dual tires involved. Changes in the air pressures acting on the spring biased diaphragm are communicated to a diaphragm follower on the atmospheric side of the diaphragm. A visual display is operated with the diaphragm follower and responds at an eight to one ratio to the movement of the diaphragm and follower when air pressure changes occur and a resultant movement of the diaphragm and follower occurs.
REFERENCES:
patent: 1229860 (1917-06-01), Ashelman
patent: 2325415 (1943-07-01), McKinley
patent: 2505118 (1950-04-01), Holmes
patent: 2800795 (1957-07-01), Trinca
patent: 3357240 (1967-12-01), Bordwick
patent: 3977355 (1976-08-01), Lorenz
Allied Transportation Specialties, Inc.
Corr Denis E.
Ruehl Charles A.
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