Dual shape assembly

Details Dual shape assembly Dual shape assembly

1995-06-06

1997-07-15

Dorner, Kenneth J.

Flexible or portable closure, partition, or panel

Plural and/or with rigid closure

Roll type

160 231, 160241, 160291, A47H 100

Patent

active

056474210

ABSTRACT:
A double panel window shade is formed by shade panels wound on inner and outer coaxial rollers. The inner roller includes a shaft secured at each end and journaled in mounting brackets at each end of the inner roller. The outer roller includes end plates journaled on the inner roller shafts. The outer roller defines a slot for receiving and passing the inner shade when said outer shade is fully unrolled from the outer roller. Each shade panel includes a bottom rail. A pull cord is provided for raising and lowering the shades by rotating the rollers. The pull cord is operatively connected to the inner roller by a dual direction spring clutch. The rollers are formed by a pair of roller tubes aligned one inside the other and each having a central axis, the axis of rotation of each tube being the central axis of the inner tube, and the central axis of the outer tube being spaced from its axis of rotation.

REFERENCES:
patent: 824930 (1906-07-01), Hopkins
patent: 2503101 (1950-04-01), Drury
patent: 3007342 (1961-11-01), Wardlaw
patent: 3063495 (1962-11-01), Petrick
patent: 4020889 (1977-05-01), Karoll
patent: 4237956 (1980-12-01), Sivin et al.
patent: 4372432 (1983-02-01), Waine et al.
patent: 4433765 (1984-02-01), Rude et al.
patent: 4610293 (1986-09-01), Weiblen

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