Door member opening and closing apparatus

Details Door member opening and closing apparatus Door member opening and closing apparatus

1978-05-08

1981-01-20

Krizmanich, George H.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

192 12R, F16D 6700

Patent

active

042457289

ABSTRACT:
An improved apparatus for opening and closing door members wherein the door member is connected to an output shaft, the rotation of the output shaft opening and closing the door member. A brake drive assembly is connected to the output shaft and constructed such that a torque applied at the output shaft causes the brake drive assembly to be conditioned in the braking mode. A ball drive assembly is connected to the output shaft and constructed such that the output shaft is rotated in response to the rotation of a portion of the ball drive assembly.

REFERENCES:
patent: 1575038 (1926-03-01), Clas
patent: 1613093 (1927-01-01), Gessler
patent: 1946048 (1934-02-01), Verderber
patent: 2307549 (1943-01-01), Thompson
patent: 2617506 (1952-11-01), Kuntz
patent: 3000626 (1961-09-01), Darney
patent: 3051282 (1962-08-01), Greene
patent: 3335831 (1967-08-01), Kalns
patent: 3955661 (1976-05-01), Popper et al.

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