Film spool with axially flexible core to engage and release film

Details Film spool with axially flexible core to engage and release film Film spool with axially flexible core to engage and release film

1994-01-14

1996-03-19

Nguyen, John Q.

Winding, tensioning, or guiding

Coil holder or support

With material end retainer

2425871, 2425873, 354275, B65H 1928, B65H 7528, G03B 1726

Patent

active

054997810

ABSTRACT:
A film spool comprises a spool core having first and second external core portions movable away from each other to further open a film receiving slot between them to facilitate insertion of a film end into the slot and removal of the film end from the slot, a film engagement protrusion projecting from the first core portion into the slot to engage a film end within the slot and secure the film end to the spool core, and a film stripper protrusion projecting from the second core portion into the slot to disengage a film end from the film engagement protrusion when the core portions are moved away from each other to further open the slot. The film stripper protrusion includes an integral anti-slippage element for holding a film end in engagement with the film engagement protrusion to prevent the film end from slipping off the film engagement protrusion, but is adapted to allow the film end to be disengaged from the film engagement protrusion when the first and second core portions are moved away from each other.

REFERENCES:
patent: 2917251 (1959-12-01), Newburger
patent: 4334750 (1982-06-01), Fichter
patent: 4834310 (1989-05-01), Ikariya et al.
patent: 4984751 (1991-01-01), Hoffacker et al.
patent: 5360183 (1994-11-01), Takahashi et al.

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