Flexible or portable closure – partition – or panel – Roll type – With brake or stop
Patent
1994-06-14
1996-02-27
Purol, David M.
Flexible or portable closure, partition, or panel
Roll type
With brake or stop
49322, E06B 956
Patent
active
054940931
ABSTRACT:
A stop mechanism (40) for a rolling door system (10) having a drive shaft (16) connecting a roll cylinder (15) carrying door slats (12) and a power system (20), including a stator ring assembly (45) mounted coaxially of the drive shaft, a plurality of circumferentially-spaced slots (48) positioned on the radially inner surface (47) of the stator ring assembly, a generally cylindrical rotor (56) mounted within the stator ring assembly for rotation with the drive shaft, a cutout 65 in the rotor, a pivot 70 on the rotor, a stop dog (81) mounted on the pivot for rotation thereon responsive to centrifugal force created by rotation of the rotor, an axial projection (90) on the stop dog configured to engage the cutout at one rotational limit of the stop dog where the stop dog effects locking engagement with a slot, whereby the stop dog transmits stopping forces from the stator ring assembly to the rotor.
REFERENCES:
patent: 2869183 (1959-01-01), Smith
patent: 3842892 (1974-10-01), Stieler
patent: 4112996 (1978-09-01), Fohl
patent: 4125142 (1978-11-01), Fohl
patent: 4604828 (1986-08-01), Baarse
patent: 4704914 (1987-11-01), Horng
patent: 4848522 (1989-07-01), Wolf
N F B Getriebe-Und Tortechnik GmbH Publication.
Purol David M.
Wayne-Dalton Corp.
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