Hanger for flat film media
US4996785A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 21, 1989 |
| Grant date | Mar 5, 1991 |
| Priority date | — |
| Expiry date | Sep 21, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T24/44769
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Light box assembly (10) has a removably mountable viewing panel (30), a cabinet (20), and a film media hanging means (40). Upon insertion, the viewing panel (30) is maintained in position by pressure applied by a stopping surface (70) a second surface opposite a camming surface (60) of an arm (62), along with a bottom panel positioner (72). Naturally resilient film (52) is inserted into a film receiving means (50). The film is guided along a guide surface (74) such that the leading edge of the film (52) follows the camming surface (60). Upon reaching film receiving bight (66), the operator releases the film. Due to the film's natural resiliency and the relative positions of the film receiving bight (66), the engaging edge (58), and an outer edge of the viewing panels' notch (32), the film is maintained in a secured position without the need of any moving parts. Such a configuration allows films of various thickness is to be secured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.