Ribbed core dual wall structure

Details Ribbed core dual wall structure Ribbed core dual wall structure

2007-03-20

2007-03-20

Matecki, Kathy (Department: 3654)

Winding, tensioning, or guiding

Coil holder or support

Spool or core

C242S610500, C242S610600, C242S613500, C138S148000, C428S036900, C425S321000, C264S171290, C264S209200, C264S209300

Reissue Patent

active

10366652

ABSTRACT:
An elongated composite tube made up of an inner tube42and an outer tube44(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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