Postal meter actuator

Details Postal meter actuator Postal meter actuator

1976-09-10

1978-12-12

Dobeck, B.

Electricity: motive power systems

Positional servo systems

Digital or numerical systems

318666, 318 15, 198502, G05B 1928

Patent

active

041298152

ABSTRACT:
Actuator for operating the arcuately moving levers of a postal meter in accordance with output signals from a computing postal scale. The actuator includes drive shoes which engage the levers and are driven along a linear path generally parallel to the arcuate path of the levers. The drive shoes are advanced and retracted by lead screws driven by stepping motors to move the levers in incremental steps. Position encoders provide signals indicative of the positions of the levers, and these signals are combined with the signals from the scale to control the operation of the actuator.

REFERENCES:
patent: 2870288 (1959-01-01), Schmidt
patent: 3307083 (1967-02-01), Pegard
patent: 3402836 (1968-09-01), Debrey et al.
patent: 3659174 (1972-04-01), Bodin
Control Systems, Sep. 1971, "Stepping Motor Survey," pp. 87-88.

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