Mould carrier and stretching carriage valve
US8858862B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 21, 2011 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Jun 7, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2949/0715
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A stretch blow molding machine may include a blow molding unit, having at least a first and a second mold carrier for receiving at least one mold part, which can be moved relative to one another, connected to one another to form a first working space for receiving the containers, and detached from one another to release the containers. A second working space may be formed between at least one mold part and at least the first mold carrier. A fluid communication system can feed a working fluid to the first and second spaces. At least one valve device for intermittent complete disconnection of fluid communication between at least one of the working spaces and the fluid system is arranged such that pressure of the working fluid within the fluid system is independent of changes in the state of the second space when the fluid communication is disconnected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.