Locking assembly for automatic doors

Brakes – Operators – Electric

Patent

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Details

188161, B60L 700

Patent

active

060893605

ABSTRACT:
A powered system which would include a motor, a shaft rotated by the electrical motor, and a work piece on the end of the shaft which would impart rotation or movement to a part. There is then provided a bushing, which would rotate in unison with the rotating shaft, and an armature plate engaged around the rotating bushing which would impart rotation to the armature plate in normal working conditions. Secured adjacent the rotating bushing and armature plate, there would be further included a bearing-mounted and field magnet assembly, known in the art, so that when the bearing mounted assembly is electrically engaged, the magnet portion of the magnet assembly would be energized, thus moving the rotating armature plate to engage against the stationary magnet face, which would immediately stop rotation of the armature plate. Because the bushing is engaged in the armature plate, the bushing would likewise be halted in its rotation as would the shaft of the motor. In this fashion, whatever piece is being rotated by the shaft of the motor would immediately cease rotation and the unit would be, in effect, fully stopped.

REFERENCES:
patent: 3863743 (1975-02-01), Rule
patent: 5000018 (1991-03-01), Eisermann
patent: 5030181 (1991-07-01), Keller
patent: 5497860 (1996-03-01), Hendricks

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