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US 5,494,093 AGranted
Rolling door stop apparatus
AssigneeWayne-Dalton Corp.
InventorAlvin R. Eiterman
Life of this patent
Estimating the term…
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AssigneeWayne-Dalton Corp.
InventorAlvin R. Eiterman
Estimating the term…
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.
A stop mechanism for a rolling door system having a drive shaft connecting a roll cylinder carrying door slats and a power system comprising, stator ring means mounted coaxially of the drive shaft, a plurality of circumferentially-spaced slot means positioned on the radially inner surface of said stator ring means, generally cylindrical rotor means mounted within said stator ring means for rotation with the drive shaft, cutout means in said rotor means, pivot means on said rotor means, stop dog means mounted on said pivot means for rotation thereon responsive to centrifugal force created by rotation of said rotor means, axial projection means on said stop dog means configured to engage said cutout means at one rotational limit of said stop dog means where said stop dog means effects locking engagement with said slot means, whereby said stop dog means transmits stopping forces from said stator ring means to said rotor means.
Dependencies are inferred from the claim text.