Spool drive for film cartridge in single-use camera
AssigneeEastman Kodak Company
InventorEdward N. Balling
Life of this patent
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Abstract
A single-use camera comprises a film cartridge including a cartridge shell and a film spool rotatably supported inside the shell with a cylindrical drive hub end axially protruding from the shell, and a manually rotatable film advance thumbwheel with an axially depending drive spindle engaging the drive hub end to rotate the spool. The cylindrical drive hub end has a pair of adjoining semi-cylindrical wall portions, one of which protrudes farther from the shell than the other. The drive spindle has a single semi-cylindrical wall portion matingly shaped to engage the cylindrical drive hub end at its pair of adjoining semi-cylindrical wall portions.
Claims5
A film cartridge comprising a cartridge shell and a film spool rotatably supported inside said shell with a cylindrical drive hub end protruding from said shell, is characterized in that:
- said cylindrical drive hub end has a pair of adjoining semi-cylindrical wall portions, one of which protrudes farther from said shell than the other to be engaged to rotate said film spool.
A single-use camera comprising a film cartridge including a cartridge shell and a film spool rotatably supported inside said shell with a cylindrical drive hub end axially protruding from said shell, and a manually rotatable film advance thumbwheel with an axially depending drive spindle engaging said drive hub end to rotate said spool, is characterized in that:
- said cylindrical drive hub end has a pair of adjoining semi-cylindrical wall portions, one of which protrudes farther from said shell than the other;
- and
- said drive spindle has a single semi-cylindrical wall portion matingly shaped to engage said cylindrical drive hub end at its pair of adjoining semi-cylindrical wall portions.
Dependencies are inferred from the claim text.