Automatic door with automatic lock system

Details Automatic door with automatic lock system Automatic door with automatic lock system

1987-03-23

1988-04-19

Aschenbrenner, Peter A.

Movable or removable closures

Condition responsive control

49360, E05F 1520

Patent

active

047380527

ABSTRACT:
An automatic door including a door body connected to a chain or belt extending between and wound around a drive pulley disposed on one side of a door opening and a driven pulley disposed on the other side thereof in which the door body is actuated to open and close by allowing the drive pulley to be rotated forwardly or reversely by an electric motor connected through a main switch and a controller to a main electric power supply source, comprises an apparatus for automatically moving the door body to its closing-stop point when the supply of electric power to the motor is interrupted by the OFF operation of the main switch, and a locking apparatus for automatically locking the door body in its closing-stop position at that time.

REFERENCES:
patent: 2217852 (1940-10-01), Anderson
patent: 2989302 (1921-06-01), Clark
patent: 4152870 (1979-05-01), Knap
patent: 4213379 (1980-07-01), Cromley
patent: 4330960 (1982-05-01), Hasemann et al.
patent: 4375019 (1983-02-01), Yoshida

Affiliated with

Also associated with

Rating

Automatic door with automatic lock system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic door with automatic lock system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic door with automatic lock system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2168414