Winding – tensioning – or guiding – Unwinding and rewinding a machine convertible information... – Cartridge system
Patent
1994-01-18
1996-01-09
Jillions, John M.
Winding, tensioning, or guiding
Unwinding and rewinding a machine convertible information...
Cartridge system
2425886, 2425983, 220326, B65H 1602, G03B 1726
Patent
active
054822238
ABSTRACT:
A reusable film canister for receiving and holding film spirally wound on a spool and method for reusing a film canister. The core of the spool extends further on one axial direction from the roll of film than the other axial direction. First and second partial shells are adapted to be mated together to form a cavity receiving the film. The first and second partial shells have at least one projecting tab. The tab and second partial shell having a mating peg and opening adapted to releasably engage with each other and adapted to secure the first and second shells together when so engaged. The tab is flexible to allow the tab to slide over the peg. The mating surfaces of the tab and the peg are angled with respect to each in order to facilitate mating of the tab with the peg. The mating surface of the tab and the mating surface of the peg are both sloped relative to the orientation of mating. The tab is disengaged from the peg. The film canister is opened by separating the first partial shell from the second partial shell. The empty or partially used spool is removed from the cavity. Fresh film on a spool is inserted into the cavity. The tab slide over peg or may be flexed to allow engagement of the tab with the peg. The tab is engaged with the peg to secure the first partial shell with the second partial shell to form a closed film canister.
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Bresina Timothy B.
Peterson Virgil L.
Bauer William D.
Griswold Gary L.
Jillions John M.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
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