Rectangular parallelepipedic case and method of producing the same
US5855334A · kind A · utility
15Cited by
12References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1997 |
| Grant date | Jan 5, 1999 |
| Priority date | — |
| Expiry date | Jun 13, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S229/93
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A rectangular parallelepipedic case includes four or more walls formed by bending a single plate. To produce the case, a double plate is used. The double plate is formed from plastic by extrusion, and first and second plate elements confronted with each other. Partition portions interconnect the first and second plate elements, and extend in the direction of the extrusion, to define plural hollow chambers between the first and second plate elements. The double plate is bent along bend lines substantially at a right angle. At least one of the bend lines is at least partially curved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.