Curtain hoisting clutch apparatus

Details Curtain hoisting clutch apparatus Curtain hoisting clutch apparatus

2007-02-13

2007-02-13

Purol, David (Department: 3634)

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Venetian blind type

Reexamination Certificate

active

10995250

ABSTRACT:
An improved curtain hoisting apparatus is wedged to a left end of a track and mainly includes a gear located on the bottom of an anchor body. The gear has a spindle pin movable in an m-shaped channel formed on an inner side of a wedge plate. The spindle pin is allowed to move and anchor in a first channel of the m-shaped channel to loosen a curtain cord for hoisting the curtain panel to a selected elevation. Pulling the curtain cord one more time allows the spindle pin moving from the first channel towards a second channel until anchoring at an outer rim at the left side of the m-shaped channel to brake the curtain cord thereby to halt the curtain panel at the selected elevation. Pulling the curtain cord repeatedly, the curtain panel may be hoisted and halted alternately and easily at selected elevations.

REFERENCES:
patent: 4955420 (1990-09-01), Marinescu et al.
patent: 4957152 (1990-09-01), Knight et al.
patent: 5109908 (1992-05-01), Chen
patent: 5156196 (1992-10-01), Corey et al.
patent: 5263528 (1993-11-01), Patel
patent: 5472036 (1995-12-01), Judkins

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