Roll-up doors

Details Roll-up doors Roll-up doors

1989-07-11

1990-08-21

Johnson, Blair M.

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

With mounting or supporting means

160205, E06B 392

Patent

active

049497723

ABSTRACT:
A roll-up door for a contained body of a van or the like is provided with a winch which is located in a compartment formed in the header of the door. The winch is connected by flexible winding straps to the upper door panel and the lower door panel so that it is operable to drive the door between the open and closed position. The door panels are hingedly connected by hinges in which the hinge pin is located at the inner face of the door. Flexible sealing members are connected to each jamb and bear against a marginal edge portion of the outer face of the door when the door is in the closed position. A control system for controlling the direction of rotation of the reversible D.C. motor is provided which includes a master control circuit and a slave control circuit which is selectively operable. The control circuit permits the movement of the door to be arrested at any time and to be reversed at any time by operating the master control and allowing similar control by means of the slave control when it is activated.

REFERENCES:
patent: 2311470 (1943-02-01), Ritter
patent: 3347305 (1967-10-01), Urbanick
patent: 3856073 (1974-12-01), Risser
patent: 4532973 (1985-08-01), DeFalco

Affiliated with

Also associated with

Rating

Roll-up doors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Roll-up doors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Roll-up doors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1670443