Winding – tensioning – or guiding – Unwinding and rewinding a machine convertible information... – Cartridge system
Patent
1994-03-10
1996-10-15
Stodola, Daniel P.
Winding, tensioning, or guiding
Unwinding and rewinding a machine convertible information...
Cartridge system
2425841, B65H 7528, G03B 1726
Patent
active
055646433
ABSTRACT:
A photo film cassette contains a spool, on which the photo film is wound as a roll. A cassette shell rotatably contains the spool and the roll of the photo film. Two retaining holes are formed in a trailer of the photo film. A slot is formed in the spool, is extended in an axial direction of the core, receives the trailer, and has a first rigid wall and a second flexible wall. Two retaining hooks are projected from the rigid wall, and are fitted in the respective retaining holes to retain the trailer in the slot. Two preventive ridges are projected from the flexible wall, and avoid disengagement of the retaining holes from the retaining hooks. The trailer is thus firmly secured on the core. The preventive ridges are formed to be retractable away from the rigid wall. The flexible wall has a gap, and defines two flap portions such that an original form is recoverable resiliently. The preventive ridges are disposed on the respective flap portions.
REFERENCES:
patent: 3910516 (1975-10-01), Hoffacker et al.
patent: 4614019 (1986-09-01), Shimizu et al.
patent: 4834306 (1989-05-01), Robertson et al.
patent: 4846418 (1989-07-01), Fairman
patent: 5054710 (1991-10-01), Ikariya et al.
Fuji Photo Film Co. , Ltd.
Rivera William A.
Stodola Daniel P.
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