Door actuating system

Details Door actuating system Door actuating system

1977-03-28

1978-08-08

Downey, Kenneth

Movable or removable closures

With operator for movably mounted closure

Operator drives closure along guide

49138, E05F 1100

Patent

active

041048261

ABSTRACT:
A door actuating system for reversibly displacing a door in a longitudinal direction. Energization of a motor causes frictional engagement of a drive bar which is secured to the door. The drive bar is frictionally driven in a first longitudinal direction to correspondingly displace the door into an open condition. Upon opening of a doorway, the motor is de-energized and a counter-weight drive mechanism is actuated for frictionally driving the drive bar in a second longitudinal direction for closing the doorway.

REFERENCES:
patent: 3039573 (1962-06-01), Gerhardt
patent: 3043584 (1962-07-01), Xielhorn
patent: 3284952 (1966-11-01), Lodge
patent: 3533188 (1970-10-01), Jones et al.
patent: 3834081 (1974-09-01), Catlett

Affiliated with

Also associated with

Rating

Door actuating 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 Door actuating system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Door actuating system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-911638