Vehicle wheel alignment transducer, system and method

Details Vehicle wheel alignment transducer, system and method Vehicle wheel alignment transducer, system and method

1987-11-02

1989-11-07

Lall, Parshotam S.

Boots, shoes, and leggings

36442403, 33336, 33365, 3320318, G01B 700

Patent

active

048796700

ABSTRACT:
A measuring apparatus for measuring a vehicle wheel alignment characteristic, such as camber, includes a transducer mountable with respect to a vehicle wheel. The transducer has a movable arm repetitively driven along its path of travel to and away from a first predetermined position. Its presence is sensed only at the first predetermined position, the alignment characteristic of the wheel being a function of the time the arm is present there. The transducer generates a digital signal having a duty cycle characteristic of the value of the alignment characteristic being measured. The amount of time the digital signal is in a first state is digitally recorded, as is the amount of time the digital signal is in the opposite state. The value of the alignment characteristic is digitally determined as a function of the two digitally recorded times.

REFERENCES:
patent: 3758958 (1978-09-01), Jordan
patent: 3892042 (1975-07-01), Senften
patent: 4180915 (1980-01-01), Lill
patent: 4192074 (1980-03-01), Chang
patent: 4261108 (1981-04-01), Davis
patent: 4389793 (1983-06-01), Butler
patent: 4574490 (1986-03-01), Curchod
patent: 4640015 (1987-02-01), Mason

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