Apparatus for forming a parison
US7713051B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Dec 21, 2007 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Dec 21, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7158
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for forming a parison is described. The apparatus has a mandrel housing. The housing has an axially aligned hollow mandrel channel therein and a side channel substantially transverse to the mandrel channel. A mandrel is also provided. The mandrel has an axially oriented notch in an exterior surface. The notch is in fluid communication with two fluid channels that extend continuously downwardly around the mandrel to meet one another on an opposite side of the mandrel from the notch. When the mandrel is installed within the mandrel channel, a first radial gap and a second radial gap, both between the mandrel and the mandrel housing, are formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.