Expandable mandrel

Details Expandable mandrel Expandable mandrel

1991-08-12

1994-05-24

Stodola, Daniel P.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

269 481, B65H 7518

Patent

active

053141350

ABSTRACT:
An expandable mandrel for mounting a core for winding, in which inner elements are moved inwardly by a floating screw to cam outer elements outwardly to grip the core. The screw is not fixed in the axial direction. Each of the inner elements has a tapered surface slidably positioned in operative relationship with an opposed tapered surface on each of the outer elements. As the inner elements move inwardly the sliding contact of these tapered surfaces cam the outer elements into gripping contact with the inner surface of the core.

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patent: 4436574 (1984-03-01), Long et al.
patent: 4492346 (1985-01-01), Young
patent: 4600334 (1986-07-01), Sousloff
patent: 4694559 (1987-09-01), Lundy et al.
patent: 4715551 (1987-12-01), Besemann
patent: 4867671 (1989-09-01), Nagayoshi et al.

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