Drive unit for a vertical blind or the like and vertical blind u

Details Drive unit for a vertical blind or the like and vertical blind u Drive unit for a vertical blind or the like and vertical blind u

1988-06-14

1990-01-30

Johnson, Blair M.

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Venetian blind type

160321, E06B 930

Patent

active

048967130

ABSTRACT:
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.

REFERENCES:
patent: 2029143 (1936-01-01), Wicks
patent: 2788481 (1957-04-01), Lui et al.
patent: 4031944 (1977-06-01), Morrison et al.
patent: 4350197 (1982-09-01), Haller
patent: 4621673 (1986-11-01), Georgopoulos et al.
patent: 4712104 (1987-12-01), Kobayashi

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