Self-adjustment hook and sling suspension for rolled sheet mater

Details Self-adjustment hook and sling suspension for rolled sheet mater Self-adjustment hook and sling suspension for rolled sheet mater

1990-11-02

1992-03-24

Chin-Shue, Alvin C.

Supports

Suspended supports

242 552, B65H 1900

Patent

active

050980556

ABSTRACT:
A compact, highly-portable hook and sling suspension assembly for rolled sheet materials (including partially or substantially unrolled sheet materials) such as background paper rolls commonly used in photography. The assembly includes a suspension cable with a pair of generally C-shaped hooks at its opposite ends. Each hook has an upper shank portion, a vertical back portion, and a horizontal insert portion. A linear relationship between the merger point of the back and insert portions, the hook's point of attachment to the cable, and the cable's central suspension point, results in a self-adjusting assembly which is highly effective in suspending a roll of sheet material and in permitting that material to be unrolled (and re-rolled) without damaging the ends of the roll or the side edges of the sheet material.

REFERENCES:
patent: 182317 (1876-09-01), Johnson
patent: 833238 (1906-10-01), Pitschke
patent: 1375224 (1921-04-01), MacLewee
patent: 4226380 (1980-10-01), Gay
patent: 4294425 (1981-10-01), Weber
patent: 4858840 (1989-08-01), Kidman

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