One-time-use camera with deflector for preventing anti-backup pawl from engaging film winder during camera assembly
US5956526A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 8, 1999 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | Jan 8, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2219/045
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A one-time-use camera which comprises a first part including a film winding thumbwheel rotatably supported for winding and unwinding rotation, and a second part assembled to the first part and including a resilient anti-backup pawl for engaging the thumbwheel to prevent unwinding rotation of the thumbwheel, is characterized in that the first part has a deflector arranged to deflect the anti-backup pawl to prevent the anti-backup pawl from engaging the thumbwheel during assembly of the first part to the second part and to allow the anti-backup pawl to engage the thumbwheel when the first part is assembled to the second part. Preferably, the deflector has an inclined portion that flexes the anti-backup pawl out of reach of the film winding thumbwheel to prevent engagement of the anti-backup pawl with the thumbwheel during assembly of the first part to the second part and an undercut that receives the anti-backup pawl to permit return of the anti-backup to within reach of the thumbwheel to allow the anti-backup pawl to engage the thumbwheel when the first part is assembled to the second part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.