Apparatus for automatically controlling the operation of automat

Details Apparatus for automatically controlling the operation of automat Apparatus for automatically controlling the operation of automat

1976-08-30

1978-05-30

Schaefer, Robert K.

Electricity: motive power systems

Motor-reversing

Periodic- or intermittent-reversing

318286, G05D 300

Patent

active

040925757

ABSTRACT:
Apparatus for automatically controlling the operation of a reciprocable door between its closed and opened positions. A position sensing means is provided for sensing the position of the door during its opening and closing strokes to decelerate the speed of the door at a final portion of the door stroke, thereby preventing the door from striking an outer door frame.

REFERENCES:
patent: 3039764 (1962-06-01), Heinsman et al.
patent: 3180635 (1965-04-01), Miller
patent: 3886425 (1975-05-01), Weiss
patent: 3891909 (1975-06-01), Newson

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