Releasable attachment for connecting film strip to a film casset

Details Releasable attachment for connecting film strip to a film casset Releasable attachment for connecting film strip to a film casset

1995-08-21

1996-11-12

Darling, John P.

Winding, tensioning, or guiding

Coil holder or support

With material end retainer

2423481, G03B 2302

Patent

active

055732038

ABSTRACT:
Film cassettes normally include a spool on to which a film strip is wound. However, the film strip is normally fixed to the spool and needs to be severed therefrom prior to processing. A releasable attachment connects a film strip to a spool. As film strip (40) is modified to include a cut-out portion (44) spaced from aperture (42) which engages a protrusion (20) in slot 18. The releasable attachment is provided by inserting the film strip (40) into the slot (18) until aperture (42) engages with protrusion (20). Subsequent withdrawal of the film strip (40) is achieved by further inserting the film strip (40) into the slot (18) to disengage the aperture (42) from the protrusion (20), and until the cut-out portion (44) clears shoulder portion (24) of the slot (18). At this point, the film strip (40) flips up out of slot (18) and as the film strip is removed in the direction of arrow `C`, shoulder portion (24) supports it so that aperture (42) and protrusion (20) cannot be re-engaged.

REFERENCES:
patent: 3586258 (1971-06-01), Horlezeder
patent: 3650389 (1972-03-01), Mook
patent: 3705696 (1972-12-01), Edwards
patent: 4334750 (1982-06-01), Fichter
patent: 4338015 (1982-07-01), Holmes
patent: 4808229 (1989-02-01), Arhelger
patent: 4834310 (1989-05-01), Ikariya et al.
patent: 5054710 (1991-10-01), Ikariya et al.

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