Light lock for roll dispensing container
US4239164A · kind A · utility
39Cited by
14References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1978 |
| Grant date | Dec 16, 1980 |
| Priority date | — |
| Expiry date | Dec 18, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T225/253
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A container is disclosed for dispensing strip material having a light-sensitive layer on one side. A slot through which the strip material can be pulled from a roll of such material within the container has a first lip and a second lip spring resiliently urged toward the first lip. The lips are shaped so that tension in the strip material therebetween produces a resultant force which opposes the resilient force to reduce or eliminate pressure between the light-sensistive layer and the first lip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.