Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – Venetian blind type
Patent
1996-01-29
1997-08-19
Johnson, Blair
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
Venetian blind type
160173, 160177, 16122, E06B 936
Patent
active
056578075
ABSTRACT:
An operating structure for a vertical blind, including an operative pulley seat, a guide cord, a shaft wheel, a pressing wheel, a hollow pull rod, a stepped fixing block, a stopper block, a rotary bar and a distance-adjusting strip. A pair of shaft wheel holes and a pair of pressing wheel holes are respectively disposed on two sides of the operative pulley seat. Two corner holes are formed on two corners contained by front side and bottom side of the operative pulley seat. The shaft wheel is formed with spaced axial frictional ribs on its surface and a central rotary bar hole. The rotary bar has a shape corresponding to that of the rotary shaft hole and is passed therethrough. The pressing wheel has a large diameter middle section and two small diameter end sections. The pull rod is a hollow cylindrical column with a certain length. The stepped fixing block has a small diameter upper section and a large diameter lower section. Two through holes extend from top face of the upper section to bottom face of the lower section. The stopper block is a hollow trapezoidal block having a close top end formed with a cord hole and an open bottom end. The slats of the blind can be easily collected without being damaged even in the case that the slats are not face-to-face positioned. In addition, the angle of the slats can be easily adjusted to open or close the blind.
REFERENCES:
patent: 4291738 (1981-09-01), Grenga et al.
patent: 4844139 (1989-07-01), John
patent: 4936369 (1990-06-01), Darner
patent: 5038843 (1991-08-01), Sommerfeld
patent: 5095966 (1992-03-01), Rogers
patent: 5103889 (1992-04-01), Ford
Ching Feng /Blinds Ind. Co., Ltd.
Johnson Blair
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