Process for the production if transversely ribbed tubes
US6206670A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1999 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Jun 29, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2023/18
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Described is an apparatus for the production of transversely ribbed tubes, having mold jaw halves which bear against each other along a common mold section with front faces and form therebetween a mold passage. Each mold jaw half has vacuum passages which are in flow communication with the mold passage. Each mold jaw half also has a cooling passage (22). The front faces of the mold jaw halves are formed with vacuum communication channels which, along the common mold section, form vacuum communication passages. The vacuum communication passages are in flow communication with a stationary vacuum rail, along the common mold section of the apparatus. Along the common mold section, the cooling passages of the mold jaw halves are in fluid communication with a stationary cooling agent rail which has a cooling agent feed means and a cooling agent discharge means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.