Expandable shaft

Details Expandable shaft Expandable shaft

1993-09-10

1994-12-06

Jillions, John M.

Winding, tensioning, or guiding

Coil holder or support

Radially expansible or contractile

B65H 7524

Patent

active

053703375

ABSTRACT:
An expandable shaft for mounting of a hollow core having an internal surface including an elongated polygonal base member having an axis of rotation, outer surfaces on the member defining a circumference having a diameter which is slightly less than the diameter of the internal surface of a core which is to be mounted on the expandable shaft, a selectively inflatable elongated expandable bladder extending longitudinally on the elongated base member in circumferentially spaced relationship to the outer surfaces for engaging the inside surface of the core and drawing it into engagement with the plurality of surfaces when the elongated expandable bladder is inflated.

REFERENCES:
patent: 2062421 (1936-12-01), Lindbom
patent: 3096949 (1963-07-01), Huffman
patent: 3388916 (1968-06-01), Winnen et al.
patent: 3834257 (1974-09-01), Ganser
patent: 4099732 (1978-07-01), Threatt
patent: 4828198 (1989-05-01), Kann et al.
Converting Magazine, Apr. 1994 Issue, advertisement on rear of p. 8 (3 sheets).

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