Metering device for an injection molding unit
US7014454B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 9, 2004 |
| Grant date | Mar 21, 2006 |
| Priority date | — |
| Expiry date | Nov 9, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2017/005
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A metering device for an injection molding unit includes a base body having an antechamber in fluid communication with a feed channel for introduction of plastic material, and a metering chamber in fluid communication with a injection channel. The antechamber and the metering chamber are connectable with one another by a closeable passageway. Movably arranged in the base body between the antechamber and the metering chamber is a displacement member in the form of a piston to separate the antechamber and the metering chamber. The piston has a first end face which demarcates the antechamber and a second end face which demarcates the metering chamber, with the first end face defining an effective area which is smaller than an effective area of the second end face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.