Injection nozzle for mixing heads of reaction casting machines
US6840757B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 2002 |
| Grant date | Jan 11, 2005 |
| Priority date | — |
| Expiry date | Jul 19, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29B7/801
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An injection nozzle for mixing heads of reaction molding machines is disclosed which comprises a housing in which a adjustment assembly is provided for slidably moving between two adjustable stops, wherein the adjustment assembly is configured as a control sleeve which includes a pressure chamber with a movable control piston disposed therein and the pressure chamber can be impinged upon by a pressure medium, for example hydraulic fluid and wherein a first stop is provided for the control sleeve and a second stop is provided for the control plunger thereby permitting an adjustment of two operating points that are exactly reproducible, so as to prevent disturbances during operation of the molding process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.