Stock material or miscellaneous articles – Structurally defined web or sheet – Nonplanar uniform thickness material
Patent
1986-05-22
1988-02-09
Kittle, John E.
Stock material or miscellaneous articles
Structurally defined web or sheet
Nonplanar uniform thickness material
52222, 160379, 160378, D06C 308
Patent
active
047241810
ABSTRACT:
A device is provided for stabilizing a flexible membrane secured within a frame, wherein a plurality of elongated arms are disposed radially from a central hub which penetrates the membrane, said arms imposing alternately against opposite sides of the membrane, thus warping and tensioning the membrane into a condition of improved stability. The membrane may be an opaque or translucent sheet or other material.
REFERENCES:
patent: 3950869 (1976-04-01), Samarin
patent: 3982361 (1976-09-01), Deutch
patent: 4144660 (1979-03-01), Lamb
patent: 4179830 (1979-12-01), Lamb
patent: 4409749 (1983-10-01), Hamu
patent: 4430814 (1984-02-01), Wulc
patent: 4431229 (1984-02-01), Unger
Kittle John E.
Loney Donald J.
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