Roller screen unit

Details Roller screen unit Roller screen unit

1990-07-24

1993-01-05

Friedman, Carl D.

Flexible or portable closure, partition, or panel

Roll type

With guides or fabric edge holders

160272, A47G 502

Patent

active

051761947

ABSTRACT:
Bead strings comprising beads connected by means of threadlike cords are provided on both edges of a screen member attached to a roller sleeve of the roller screen unit, and are engaged slidably with guide grooves of a pair of guide groove members arranged on both sides of the screen member. The beads have an aperture through the center thereof, with a string disposed in the apertures. A space portion of the string between each of the beads is attached to the screen member by sewing. This permits very smooth operation of drawing/expanding and winding/housing of the screen member, and facilitates more efficient design and manufacture of the unit.

REFERENCES:
patent: 236126 (1880-12-01), Washburn
patent: 797652 (1905-08-01), Wihon et al.
patent: 1692206 (1928-11-01), Griffiths
patent: 3504728 (1970-04-01), Wardlaw
patent: 4175608 (1979-11-01), Alton
patent: 4345636 (1982-08-01), Fukuchi

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