Flexible or portable closure – partition – or panel – Roll type – With brake or stop
Patent
1993-10-26
1995-08-22
Purol, David M.
Flexible or portable closure, partition, or panel
Roll type
With brake or stop
160319, E06B 956
Patent
active
054431093
ABSTRACT:
The present invention pertains to a window shade drive with an automatically acting coupling, which has friction surfaces and is arranged between a stationary component (9) and a driving member (3) connected to the winding shaft, wherein two coupling elements are movable axially and in the direction of rotation in relation to one another to operate the coupling by rotating the drive member. In such a drive, one of the coupling members is connected to the drive member (8) by a member (7, 18), which generates a torque between this coupling element (disk 5) and the drive member (8) within a range, and the other coupling element is provided at an end disk of an assembly of a plurality of brake disks (1, 2), wherein the end disk is coupled nonrotatably, but axially displaceably with the driving member. The brake disks (1, 2) are alternatingly connected rotatably to the driving member (3) and to a stationary component (9). The assembly of brake disks (1, 2) is supported by a stationary axial bearing (14) on a stationary component, and structure, by which axial forces are applied to the assembly of brake disks (1, 2) during a rotary movement of the two coupling elements in relation to one another, are provided between the two coupling elements.
REFERENCES:
patent: 4433765 (1984-02-01), Rude et al.
patent: 4519487 (1985-05-01), Florin
patent: 4534396 (1985-08-01), Jung
Benthin AG
Purol David M.
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