Expansible chuck assembly

Details Expansible chuck assembly Expansible chuck assembly

1980-09-17

1983-07-05

Garrett, Robert E.

Chucks or sockets

Expanding

Collet type

279 4, B23B 3140, B23B 534, B23B 3110

Patent

active

043914519

ABSTRACT:
An air-mechanical expanding chuck for supporting a core for winding webs. A cylindrical chuck body defines a chamber which contains a piston with its piston rod extending out of the chamber for insertion into the core. The piston rod forms a tapered arbor at its end. Three gripping elements bear against flat surfaces formed on the tapered arbor. By applying air to one side of the piston, the arbor is moved inboard relative to the core and the gripping elements are thereby expanded to engage the core's interior. The chuck body's inward face is provided with radially extending T-grooves to receive corresponding T-formed outer ends of the gripping elements which are movable radially in the T-grooves. The gripping elements are readily removable from the grooves and replaceable by elements of other sizes for different diameter cores. To disengage the gripping elements, compressed air is applied to the inboard side of the piston thereby moving the piston, piston rod and arbor outboard relative to the core whereby the gripping elements are released from the core.

REFERENCES:
patent: 1420682 (1922-06-01), Bright
patent: 1509997 (1924-09-01), Fry
patent: 1600367 (1926-09-01), Sczawinski
patent: 2480762 (1949-08-01), Parker
patent: 2626811 (1953-01-01), Hohwart et al.
patent: 2675241 (1954-04-01), Petit
patent: 2942892 (1960-06-01), Nelson
patent: 2949313 (1960-08-01), Moser et al.
patent: 3369464 (1968-02-01), Blattry
patent: 3641875 (1972-02-01), Kodalle
patent: 3972488 (1976-08-01), Lee et al.
patent: 4093137 (1978-06-01), Briar et al.
patent: 4147312 (1979-04-01), Secor et al.

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