One-time-use camera with motion-restraint for rotatable frame counter
US5864723A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1997 |
| Grant date | Jan 26, 1999 |
| Priority date | — |
| Expiry date | Apr 8, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2219/045
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera comprising a film frame counter rotatable at a central hub to successive numbered settings, and a metering cam rotatable in response to film advancement and having at least one tooth for intermittently engaging the frame counter to rotate the frame counter to its next numbered setting when the metering cam is rotated, characterized in that a cantilevered flexible beam has two ends, and is supported at one end to permit the beam to be bent at the other end for the beam to forcibly press between the two ends against the central hub of the frame counter to prevent an unintended rotation of the frame counter, and the metering cam has a cam lobe arranged to bend the beam at its other end for the beam to forcibly press between its two ends against the frame counter when the tooth is not engaged with the frame counter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.