Electric window blind

Details Electric window blind Electric window blind

1995-12-12

1997-03-18

Johnson, Blair

Flexible or portable closure, partition, or panel

Hanging or drape type

With fabric operating means

160321, 1601681P, 160170R, 160331, 74606R, A47H 500

Patent

active

056113862

ABSTRACT:
An electric window blind comprises a driving member capable of being actuated by an action rod to cause the rotary wheels to engage the transmission wheels at the time when the power outage takes place. The rotary wheels can be therefore actuated manually so as to keep to electric window blind in an operating condition in the event of a power interruption.

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patent: 5270629 (1993-12-01), Hsieh
patent: 5353690 (1994-10-01), Shin
patent: 5483426 (1996-01-01), Lewis et al.

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