Universal film thrusting cartridge and method

Details Universal film thrusting cartridge and method Universal film thrusting cartridge and method

1995-02-10

1996-07-30

Jillions, John M.

Winding, tensioning, or guiding

Unwinding and rewinding a machine convertible information...

Cartridge system

2425321, 242357, 354275, G03B 1726

Patent

active

055404006

ABSTRACT:
A universal film thrusting cartridge includes a tab connected to a fixed diameter spool core and connectable with a filmstrip of optional length, the tab being sized for use with the shortest filmstrip and trimable to fit longer filmstrips so that when wound within the cartridge the film roll has a prescribed outer diameter at the leading outer end. The trimable tab avoids different core sizes for each filmstrip length in order to obtain the prescribed outer roll diameter needed to match the cartridge wall and allow thrusting of the film out of the cartridge on reverse winding of the spool.

REFERENCES:
patent: 3756528 (1973-09-01), Ohmura
patent: 4173315 (1979-11-01), Clausser
patent: 4951893 (1990-08-01), Yuito
patent: 5015089 (1991-05-01), Radov
patent: 5031852 (1991-07-01), Dowling et al.

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