Device for operating a pocket door

Details Device for operating a pocket door Device for operating a pocket door

1975-09-04

1977-09-27

Downey, Kenneth

Movable or removable closures

Safety means responsive to obstruction to closure

49139, 49360, 318285, E05F 1514

Patent

active

040501892

ABSTRACT:
A pocket door is moved between open and closed positions by an electric motor unit mounted on the studs framing the rough opening in which the door is installed. The rotary motion of the motor is translated into linear motion by a cable and pulley arrangement with one of the pulleys being a drive pulley on the shaft of the motor unit and the other being an idler pulley mounted on the track on which the door slides. The cable is attached to the door through a coil-type tension spring. Hence, the door will move when the motor is energized and should the door encounter an impediment upon closing the spring will expand and permit the pulley to slip within the loop of the cable. The motor is controlled by a timer which when activated causes the motor to run for sufficient time to open the door, then hold to enable one to pass through the door opening, and then run in the opposite direction for sufficient time to close the door.

REFERENCES:
patent: 3223402 (1965-12-01), Glenn
patent: 3247615 (1966-04-01), Kalog
patent: 3429073 (1969-02-01), Tucker, Jr.

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