Flexible or portable closure – partition – or panel – Hanging or drape type – Motor operating means or electric or fluid pressure control
Patent
1975-08-11
1977-06-28
Kannan, Philip C.
Flexible or portable closure, partition, or panel
Hanging or drape type
Motor operating means or electric or fluid pressure control
226 50, 226186, 254186R, A47H 502, B66D 176
Patent
active
040319440
ABSTRACT:
A device for the opening and closing of cord operated closures, including a unidirectional electric drive motor and a pair of movable idler pulleys. The drive motor drives a frictional drive roller. A pair of flexible cords from the closure are singularly held against the drive roller by moving one or the other of the idler pulleys against the drive roller sandwiching a cord therebetween, one idler pulley causing one cord to move in one direction and the other idler pulley causing the cord to move in the other direction. An automatic shutoff mechanism is incorporated to shut off the drive motor and release the cord when sufficient tension is present on the cord, for instance, at the end of closure travel. The shutoff mechanism causes the drive roller and associated mechanism to travel along the cord a short distance thereby triggering a latch release mechanism.
REFERENCES:
patent: 2468453 (1949-04-01), Mallentjer
patent: 2798194 (1957-07-01), Cantin
patent: 3155778 (1964-11-01), Meyer
patent: 3269454 (1966-08-01), Gill et al.
patent: 3438423 (1969-04-01), Melull et al.
patent: 3561520 (1971-02-01), Gill
Brand Derek A.
Morrison Howard J.
Kannan Philip C.
Marvin Glass & Associates
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