Air shaft

Details Air shaft Air shaft

1994-06-14

1996-04-23

Darling, John P.

Winding, tensioning, or guiding

Coil holder or support

Radially expansible or contractile

B65H 7524

Patent

active

055096182

ABSTRACT:
An air shaft for gripping cores of rolls of paper and the like has an integral lightweight metal main shaft with axial grooves in its outside surface. Axial single sheet strips of expandable rubber are wedged in the grooves and air pressure is applied to one side. In the groove on the other side of the rubber sheet, are spacers and metal grippers, arranged in alternating fashion. The grippers are movable outwardly in response to the application of air pressure; the spacers are not. The spacers and grippers have coaxial through passages through which a flat steel ribbon extends. The steel ribbon biases the grippers to their retracted position and restricts the outward movement of the grippers to an appropriate range. An insert in the central portion of the air shaft reinforces it.

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Catalog 207-Deublin Company-Deublin Expanding Air Shafts and Mechanical Shafts.
Tidland-Slitting and Winding Equipment.
Nim-Cor-Air Shafts, Bowed Rolls, Air Chucks, Roll Handling Equipment.
Goldenrod Corporation-Go For The Gold . . . Greatest Variety of Customized Roll Handling Tools in the World.
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Converting Magazine, 1990, "They're not heavy-they're lightweight carbon fiber core shafts".
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Converting Magazine, "Composite shafts take the load off".
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Paper, Film, & Foil Converter, Jan. 1993, "Using Composites in Shafts Turning into Weighty Issue".

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