Anti-backup pawl for manual film winder reinforced when film win

Details Anti-backup pawl for manual film winder reinforced when film win Anti-backup pawl for manual film winder reinforced when film win

1999-04-01

2000-05-30

Gray, David M.

Photography

Disposable or recyclable camera

396396, G03B 1724

Patent

active

060700149

ABSTRACT:
A camera comprising a rotatably supported film winding wheel that has a series of teeth and is manually rotated in a film winding direction, and an anti-backup pawl that is resiliently supported for successive ones of the teeth to deflect the anti-backup pawl out of engagement with the respective teeth when the film winding wheel is manually rotated in the film winding direction and that continuously engages any one of the teeth to substantially prevent rotation of the film winding wheel in a reverse direction when it is attempted to manually rotate the film winding wheel in the reverse direction, is characterized in that the anti-backup pawl is connected with a catch and is resiliently supported for any one tooth that is engaging the anti-back up pawl to push the anti-backup pawl when it is attempted to manually rotate the film winding wheel in the reverse direction, and a fixed reinforcing stop is spaced from the catch to allow the anti-backup pawl to be deflected out of engagement with the respective teeth when the film winding wheel is manually rotated in the film winding direction and which is positioned to engage the catch to prevent the anti-backup pawl from being pushed when it is attempted to manually rotate the film winding wheel in the reverse direction.

REFERENCES:
patent: 5752086 (1998-05-01), Negishi et al.
patent: 5956526 (1999-09-01), DiRisio

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