Bubbler tube with integral inlet pipe and bimetal core for injection molding tools and method of making the bubbler tube
US6425752B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Mar 16, 2000 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | Mar 16, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49728
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A mold assembly including moveable mold parts, one of which includes a plurality of hollow cavities. Each hollow cavity forms an outer wall of an elongated, generally annular portion of a molded part and the other mold part includes a corresponding plurality of core elements, which form an inner wall of the same portion of the molded part. Each core is disposed within a corresponding cavity to define a generally annular mold chamber portion for receiving molten material to be molded to form the shape of the portion of the molded part. Each core element includes a cooling apparatus and each cavity includes an outside cavity-cooling device. Each core element includes a first portion made of high strength material and a tip portion made of material having a greater heat diffusivity and heat transfer coefficient than said first portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.