Electrical safety device for controlling a printing machine

Details Electrical safety device for controlling a printing machine Electrical safety device for controlling a printing machine

1982-05-03

1984-12-11

Shoop, William M.

Electricity: power supply or regulation systems

External or operator controlled

Using a transformer or inductor as the final control device

H02J 312

Patent

active

044881070

ABSTRACT:
Electrical safety device for controlling a printing machine having a control transformer with a plurality of primary and secondary taps for varying voltage levels including respective control lines connected to the secondary taps, a voltage monitoring device connected in a respective control line of one of the secondary taps, and a voltage changing switching device operatively associated with one of the primary taps, the voltage monitoring device being coupled with the voltage changing switching device.

REFERENCES:
patent: 2680832 (1954-06-01), Schultz
patent: 2721969 (1955-10-01), Van Ryan et al.
patent: 2730671 (1956-01-01), Van Ryan
patent: 2901684 (1959-08-01), Bronikowski
patent: 2927225 (1960-03-01), Phillips
patent: 3081426 (1963-03-01), Bakke
patent: 3818321 (1974-06-01), Willner et al.
patent: 4204147 (1980-05-01), Larrabee

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