Nominal value pick up for drive controls

Details Nominal value pick up for drive controls Nominal value pick up for drive controls

1981-01-22

1983-09-20

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250239, G01D 534

Patent

active

044058594

ABSTRACT:
A drive control, for example for a sewing machine, for controlling speeds and positioning of of a drive shaft driven by a drive motor includes a control box accommodating a speed control circuit and a positioning control circuit and a nominal value pick up which is releasably attachable with respect to the control box. The nominal value pick up can be fixedly adjusted on the control box.

REFERENCES:
patent: 3564376 (1971-02-01), Mais et al.
patent: 3946225 (1976-03-01), Beeck
patent: 4033273 (1977-07-01), Kasuga
patent: 4047025 (1977-09-01), Lemelson

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