Photographic film spool having an arrangement for receiving and

Details Photographic film spool having an arrangement for receiving and Photographic film spool having an arrangement for receiving and

1993-02-23

1994-10-04

Stodola, Daniel P.

Winding, tensioning, or guiding

Coil holder or support

With material end retainer

B65H 7528

Patent

active

053519043

ABSTRACT:
A photographic film spool is comprised of a spool core which includes a pair of flanges, a slot for film insertion, and a pair of walls. The walls face each other and form the slot for film insertion. One of the walls of the spool is provided with a ramp portion which is formed so as to approach the other wall gradually in the direction of film insertion, a retention hook which is provided at the top of the ramp portion and which engages an aperture of the trailing end of the photographic film, and penetrated portions which are formed on both sides of the retention hook and which penetrate the one wall in the direction perpendicular to the direction of film insertion. The other wall has a hold-down projection which inhibits the photographic film from becoming detached from the retention hook. The spool allows easy removal of the trailing end of the photographic film from the spool core without damage after use.

REFERENCES:
patent: 4834310 (1989-05-01), Ikariya et al.
patent: 4955555 (1990-09-01), Pierson et al.

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