Door operator

Details Door operator Door operator

1984-03-15

1985-12-24

Krizmanich, George H.

192 clutches and power-stop control

Clutch and brake

Sliding operation

56 116, 474115, F16D 1376, A01D 6910, F16H 5710

Patent

active

045600465

ABSTRACT:
A door operator mechanism which has a motive power source and drive and a manual drive for use with a manual source of power. A mechanism is included which by the simple expedient of pulling a chain or cable disconnects the power source and associated driver and connects the manual drive for use of a manual source of power. Release of the cable causes the reverse.

REFERENCES:
patent: 3636786 (1972-01-01), Buck
patent: 4068452 (1978-01-01), Schaefer et al.
patent: 4409779 (1983-10-01), Bent

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