Speedometer and ratio testing apparatus

Details Speedometer and ratio testing apparatus Speedometer and ratio testing apparatus

1976-06-22

1978-01-31

Gill, James J.

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

G01P 2102

Patent

active

040709019

ABSTRACT:
Testing apparatus for speedometers is disclosed including variable speed control driving means coupled to a flexible drive connection assembly that is adapted for connection with the speedometer. The drive connection assembly includes impulse generating means connected with a digital indicator for indicating the rotational rate of the cable assembly and for providing comparative readings of the indicator and the instrument being tested. The flexible drive assembly is adapted for connection with the flexible drive or the gear box coupling of the speedometer for checking the drive ratio upon rotation of the vehicle traction wheels when moving the vehicle a predetermined distance to determine the number of turns per unit of distance of the speedometer drive cable.

REFERENCES:
patent: 3363446 (1968-01-01), Kaley
patent: 3962912 (1976-06-01), Borie

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