Control device for electric motor-reducing unit

Details Control device for electric motor-reducing unit Control device for electric motor-reducing unit

1980-04-30

1983-10-25

Bonck, Rodney H.

192 clutches and power-stop control

Stop mechanism

Limit stop

74435, 160310, 200 38R, 200 47, 318470, F16D 7100

Patent

active

044113480

ABSTRACT:
This control device for an electric motor-reduction unit is designed to permit the accurate adjustment of the point at which it is desired to stop the rotation of the unit. For this purpose, it comprises a slide controlling during its movement in one direction and during a first time period the movement of beaks of a rocker in a direction in order to open the motor control switch when said beaks are engaged in notches of cam means. In a second time period, the slide causes a two-armed sliding lever supporting the notched-cam shaft to pivot in a direction, each notched cam being rigidly associated with a heart-shaped cam and with a toothed wheel adapted, when inoperative, to mesh with toothed drive pinions. In a third time period, the slide causes the beaks of the aligning lever to bear against the heart-shaped cams in order to align the notches with the beaks. The pinions remain radially fixed. This device is particularly suited for controlling electric motor-reduction units for driving rolling shutters, roller-blinds and the like.

REFERENCES:
patent: 1386894 (1921-08-01), Rockwell et al.
patent: 2937732 (1960-05-01), Brady
patent: 3213715 (1965-10-01), Arenson
patent: 3814309 (1974-06-01), Ramstetter
patent: 3862385 (1975-01-01), Johnson
patent: 3884088 (1975-05-01), Bertozzi et al.

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