Three-dimensional articles of indeterminate axial length
US6740281B2 · kind B2 · utility
8Cited by
20References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2002 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | Aug 23, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/44
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An integral three-dimensional article having interstitials therethrough, the three-dimensional article comprises an unconstrained number of axially successive stages. An apparatus and process for molding such a three-dimensional article are also disclosed. The apparatus has members extending into a mold cavity, each member having access to the periphery of the mold cavity. Each stage may nest within an adjacent stage. The nesting may be accomplished by having the end of one stage be convex, while the mating end of an adjacent stage is complementary and concave. The article may be useful as a static mixer, heat exchanger, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.