Coupling device

Details Coupling device Coupling device

1986-07-22

1987-04-28

Little, Willis

Geometrical instruments

Miscellaneous

Light direction

33 1PT, 33125C, 33 1N, G01B 1100

Patent

active

046602887

ABSTRACT:
A coupling device for connecting a standard incremental angular motion transducer with two objects to be measured wherein the transducer is of the type comprising a measuring scale with at least one reference mark and a scanning unit operative to scan the measuring scale. The coupling device enables the transducer to be calibrated while the two objects are stationary. The calibration process is performed using a motor which engages and rotates a gear wheel connected to the measuring scale. The rotation of the measuring scale is conducted against the force of a spiral spring until the reference mark is scanned by the scanning unit and a reference pulse generated. The measuring scale is then returned to its momentary position under the influence of the spiral spring and the motor disengaged.

REFERENCES:
patent: 4495700 (1985-01-01), Ernst
patent: 4530155 (1985-07-01), Burkhardt et al.

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