Door operator with detachable electric motor

Details Door operator with detachable electric motor Door operator with detachable electric motor

1997-09-16

2000-05-02

Bucci, David A.

Machine element or mechanism

Alternate manual or power operators

160310, 49140, E06B 974

Patent

active

060558857

ABSTRACT:
A door operator comprising electric actuating motor; a reduction gear; manual transmission mechanism between the electric actuating motor and the reduction gear, the electric actuating motor and the manual transmission mechanism independently actuating the reduction gear; a proximal clutch with a proximal disc, which is mounted on a rotating shift of the manual transmission shaft; an end disc of the proximal clutch secured on the rotating shaft of manual transmission mechanism; and an electromagnet secured on a bearing seat inside a housing of the manual transmission mechanism, which is controllable to produce a magnetic effect for a pull chain disc sleeved on the bearing seat to move axially.

REFERENCES:
patent: 1441229 (1923-01-01), Lacey
patent: 2096251 (1937-10-01), Knight et al.
patent: 2670065 (1954-02-01), Stevens, Jr.
patent: 3853167 (1974-12-01), Wardlaw
patent: 4721146 (1988-01-01), Wardlaw
patent: 5700196 (1997-12-01), Banemann et al.

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