Alessio G Pretto

US Patent:

53799640, Jan 10, 1995

Filed:

Aug 10, 1993

Appl. No.:

8/103900

Inventors:

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.

US Patent:

57463875, May 5, 1998

Filed:

Feb 20, 1996

Appl. No.:

8/604152

Inventors:

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.

US Patent:

51709600, Dec 15, 1992

Filed:

Jun 13, 1991

Appl. No.:

7/714707

Inventors:

Alessio G. Pretto - Pawling NY

International Classification:

B65H 7524

US Classification:

242 721

Abstract:

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).