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US 4,896,713 AGranted
Drive unit for a vertical blind or the like and vertical blind utilizing same
OwnerWilhelm Rademacherinventor
Life of this patent
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OwnerWilhelm Rademacherinventor
Estimating the term…
Drive unit for a vertical blind or the like, where the slats of the vertial blinds can be moved by an endless pull element, such as a pull chain. The drive unit has a housing (5) formed, for example, of plastic, an electric drive motor (6) placed in the housing (5), and a drive pinion or the like coupled to the drive motor, optionally by an inserted reduction gear. By enclosing of the drive components within the housing, a safe and unobtrusive drive unit is created. Preferred embodiments of the unit are constructed to enable the pull element to enter the housing through openings therein and be hung on the drive pinion. By this construction and the provision of control switches on the housing for operation of the electric drive motor, the drive unit is inexpensive and able to be retrofitted simply and versatily. Additionally, in an emergency, easy hand operation of the vertical blinds is still possible. Still further, the drive unit is designed to enable mounting of it in each of two positions that are displaced 180.degree. relative to each other by the provision of openings for the pull element at each of opposite sides of the housing and by enabling the mounting position of the switch controls to be inverted relative to the remainder of the housing.
A drive unit, for a vertical blind or the like having a plurality of slats that are movable by an endless pull element, of the type comprising a drive motor, said drive motor being coupled to a drive pinion that is constructed for drivingly engaging the pull element, and switch control means for operating the drive motor, the improvement comprising a housing enclosing said drive motor and drive pinion, and having means for enabling said drive unit to be installed onto a portion of the pull element, without separation and rejoining thereof, in each of two orientations of the housing that are offset 180.degree. relative to each other about an axis extending normal to the plane of a rear wall of the housing so as to be inverted;
A vertical blind or the like comprising a plurality of slats that are movable by an endless pull element, and a drive unit of the type comprising a drive motor, said drive motor being coupled to a first and a second drive pinion that are constructed for drivingly engaging the pull element, and switch control means for operating the drive motor, the improvement comprising a housing enclosing said drive motor and said drive pinions, and having means for enabling the pull element to enter into said housing and be hung on one of said drive pinions;
A drive unit, for a vertical blind or the like having a plurality of slats that are movable by an endless pull element, of the type comprising a drive motor, said drive motor being coupled to a drive pinion that is constructed for drivingly engaging the pull element, and switch control means for operating the drive motor, the improvement comprising a housing enclosing said drive motor and drive pinion, and having means for enabling said pull element to enter into said housing, and wherein the drive pinion, the drive motor, and a reduction gear are placed in a support, said support being pivotally mounted to the housing in a manner permitting it to be swung out of the housing as a means for providing access to said drive pinion and for enabling the pull element to be freely inserted onto the drive pinion.
Dependencies are inferred from the claim text.