Injection molding screw
US7172333B2 · kind B2 · utility
16Cited by
14References
41Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 13, 2003 |
| Grant date | Feb 6, 2007 |
| Priority date | — |
| Expiry date | Jan 25, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An injection molding screw for metal injection molding includes a first end, a second end, a longitudinal body with a first stage and a second stage extending axially along a length of the screw between the ends, a pressure retention device, and optionally, a screw tip. The pressure retention element minimizes loss of pressure in the second stage portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.