Multi-wall cylindrical structure, method of making such...

Details Multi-wall cylindrical structure, method of making such... Multi-wall cylindrical structure, method of making such...

2005-10-18

2005-10-18

Eashoo, Mark (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

To form particulate product

C264S209200, C264S209300, C264S210200, C264S295000

Reexamination Certificate

active

06955780

ABSTRACT:
An elongated composite tube made up of an inner tube42and an outer tube44(see FIG.3) with a plurality of elongated helical ribs disposed between the inner tube and the outer tube in a supporting relationship to both. A slinky like toy made from the composite tube is also disclosed, as is a method of making both.

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Commercial A, Pipe product sold by Diamond Incorporated (Photograph).
Commercial A, Pipe product sold by Lamson and Sessions (Photograph).

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