Method of making a multiple chamber tube
US6994818B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 2001 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Sep 3, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D81/3288
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention relates to a multi-chamber tube with at least two chambers and a tube head, with closable withdrawal apertures corresponding to the number of chambers and consisting of an accumulation of at least two separately produced tubular pipes arranged parallel to one another with a rounded external periphery common to all tubular pipes. According to the invention it comprises an integral tube head produced by pressed molten portions and common to all tubular pipes and containing the partition walls corresponding to the number of tubular pipes and connected thereto, molten material simultaneously flowing around the edge ends of the tubular members which are rigidly connected to one another after curing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.