Alessio G. Pretto - Pawling NY Louis J. Keester - Lincoln NE Richard S. Hansen - Lincoln NE
Assignee:
Addax, Inc. - Lincoln NE Goldenrod, Inc. - Prospect CT
International Classification:
B65H 7524
US Classification:
2425712
Abstract:
An expandable shaft of the slotted type made of a fiber and resin composite material. The shaft is fabricated by first forming the central cylindrical core and then forming the rails by pultrusion. The rails are then bonded to the outer surface of the core.
Alessio G. Pretto - Pawling NY John A. Pretto - Prospect CT
International Classification:
B65H 7524 B65H 7508
US Classification:
2425712
Abstract:
An expandable shaft of the slotted type made of metal and a fiber and resin composite material. The shaft is formed of an elongated shell having hollow portions filled with a fiber/resin material.
According to the invention a winding head (1,40) is realized with expanding sectors (15,41) for the rotation of a tubular center (23,44) around which a tape (26) is wound. The sectors (15,41) are radially forced against the internal surface (22,43) of the tubular center (23,44) by means of the radial movement of splines (9) and of rolling elements (17) placed on horizontal surfaces (11) of the splines (9). Said rotation is caused by the rotation of the sectors (15,41) to which said rolling element belong, caused by the tension (27) of the tape (26) being wound around the tubular center (23,44).
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