Air powered door operator

Details Air powered door operator Air powered door operator

1982-02-12

1983-11-29

Downey, Kenneth

Movable or removable closures

Up-and-over type; e.g., moves from vertical to withdrawn...

With operator

160188, 160189, E05F 1100

Patent

active

044174187

ABSTRACT:
For a system in which an overhead door is raised or lowered by a combination of a cable, spring, drum and torsion bar which is rotated by a chain-driven sprocket, a pair of pneumatic cylinders having elongated rods attached to the cylinder pistons are attached to the sprocket chain to drive the chain to raise and lower the door. Braking and safety features are provided.

REFERENCES:
patent: 666170 (1901-01-01), Webster
patent: 3160200 (1964-12-01), McKee et al.
patent: 3940887 (1976-03-01), Slaybangh
patent: 4102382 (1978-07-01), Vesbach

Affiliated with

Also associated with

Rating

Air powered door operator does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-603391