Threaded paper tube

Details Threaded paper tube Threaded paper tube

1996-03-21

1997-06-17

Kim, Harry C.

Joints and connections

Articulated members

Lockable at fixed position

403343, 403404, 411905, 248405, F16B 718

Patent

active

056391757

ABSTRACT:
A threaded paper tube includes a multiple paper tube having an inner tube with spiral ridges on its outer surface, and an outer tube and a tightening robe each having grooves on their inner surfaces which are in the same pitch as the spiral ridges. The total length of the threaded paper tube may be changed by adjusting the screwing extent between the inner and outer tubes, and the total length may then be fixed by tightening the tightening tube against the outer tube. The ridges and grooves are provided as steps formed on the inner tube's outer surface, the outer tube's inner surface and the tightening tube's inner surface using a ribbon-like shaped paper material which is adhered and fixed at the same pitch on the surfaces of the tubes.

REFERENCES:
patent: 1104891 (1914-07-01), Heusser
patent: 2535618 (1950-12-01), Vanderbeek
patent: 3059888 (1962-10-01), Lie
patent: 3104493 (1963-09-01), Nalle
patent: 3150853 (1964-09-01), Lisbin
patent: 4318353 (1982-03-01), Friedman et al.

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