Control system for door opener

Details Control system for door opener Control system for door opener

2006-06-06

2006-06-06

Redman, Jerry (Department: 3634)

Movable or removable closures

Optionally moved, manually, or by motor

C074S625000, C160S188000, C192S01200R

Reexamination Certificate

active

07055283

ABSTRACT:
A control system for switching an electric operation to a manual operation of a door opener comprises: a housing11, including a power unit12driving a shaft120electrically and transmitting the power to an output shaft16; a braking device13, used for braking the shaft120and releasing the shaft120; a pull-chain disk device15allowed for exerting an external force via a pull chain152to rotate the shaft120; a clutch device18, disposed between the shaft120and the pull-chain disk device15, used for unidirectionally rotating the shaft120controllably when the pull-chain disk device is rotated by the external force; a protective device17used for cutting off a circuit of a door opener10′ in an abnormal mode; and a driven disk158interlocked with the clutch device18so as to swing by an angle for actuating the protective device17to switch. As such, the circuit of the door opener10′ is cut off and the brake is released jointly to automatically switch to a safe manual mode in any situation, once the pull chain152is pulled.

REFERENCES:
patent: 3853167 (1974-12-01), Wardlaw
patent: 5839555 (1998-11-01), Hsieh
patent: 6055885 (2000-05-01), Shea
patent: 6092582 (2000-07-01), Liu
patent: 2002/0111242 (2002-08-01), Balli et al.

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