Device for injecting a pressurized liquid in order to shape a container, comprising a work chamber arranged downstream from pumping means
US9079676B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 2012 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | Jul 19, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2949/0715
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A device (31) for injecting an incompressible, pressurized liquid into a container (18) made of a thermoplastic material so as to shape the container (18), includes: a pipe (30) for supplying the liquid, which is to connect a liquid source (40) to the container (18); pumping elements (42) for causing the liquid to flow in the supply pipe (30) toward the container (18) at a first pressure (P1); and compression elements (44) for temporarily raising the pressure of the liquid contained in the container (18) to a second pressure (P2) that is greater than the first pressure (P1), wherein the compression elements (44) are formed by a work chamber (48), whose volume is variable, and which is connected only to the supply pipe (30) between the pumping elements (42) and the container (18).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.