Core chuck

Details Core chuck Core chuck

2006-07-18

2006-07-18

Matecki, Kathy (Department: 3654)

Winding, tensioning, or guiding

Coil holder or support

Radially expansible or contractile

C242S575400

Reexamination Certificate

active

07077356

ABSTRACT:
A core chuck includes “lock and key” or “key and keyhole” interfaces between the central cam and the mounting plate and the central cam and the end cap. The central cam includes central region having a multi-faceted camming surface adapted to expand and retract a plurality of jaws as is well known. Unlike known core chucks, the first end of the central core has a non-circular perimeter and the mounting plate includes a cavity sized and shaped to substantially correspond to the non-circular perimeter of the central and form a “lock and key” or “key and keyhole” arrangement. A plurality of fasteners secure the central cam to the mounting plate with their heads disposed proximate the second end region of the central cam. The end cap includes a second cavity sized and shaped to form a “lock and key” or “key and keyhole” arrangement with the heads of the fasteners.

REFERENCES:
patent: 566368 (1896-08-01), Wuelfing
patent: 3695561 (1972-10-01), Pitts
patent: 3792868 (1974-02-01), Flag
patent: 3963250 (1976-06-01), Flag
patent: 3993317 (1976-11-01), Flagg
patent: 4193633 (1980-03-01), Potter
patent: 4339094 (1982-07-01), Thievessen et al.
patent: 5490640 (1996-02-01), Miller et al.

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