Apparatus to move negatives
US4840415A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 29, 1988 |
| Grant date | Jun 20, 1989 |
| Priority date | — |
| Expiry date | Feb 29, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03D15/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An apparatus for moving a longitudinal film strip carrying positive or negative images and having spaced perforations along parallel longitudinal edges of the strip in a longitudinal pocket, and comprising a longitudinal planar member having first and second parallel longitudinal edges and a plurality of spaced, flexible gripping members extending out of the plane of the longitudinal member. The gripping members engage in the spaced perforations along parallel edges of the film strip when the planar member is positioned adjacent the strip in an overlying manner within a longitudinal pocket holding the strip. In a preferred embodiment, the gripping members are triangular and are arranged in spaced parallel row adjacent the first and second edges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.