Test apparatus for mixing apparatuses for multicomponent plastics, in particular polyurethane
US4774846A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 22, 1987 |
| Grant date | Oct 4, 1988 |
| Priority date | — |
| Expiry date | Jan 22, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86558
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The test apparatus is equipped with two valves, of which the valve arranged in the test line 3 which branches off from the return line 1 is a seat valve 7 whose outlet aperture 13 forms the end of the test line, so that the amount of component emerging through the outlet aperture passes directly into the test beaker 6. The other valve, which is preferably a sliding valve 9, is designed and arranged so that one valve opens only when the other valve is closed, so that undefined flow through both lines 1 and 3 is avoided. The test apparatus permits error-free determination of the test amount per unit time. No residues remain in the apparatus, and the individual parameters which are important for the test result can be determined exactly and simply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.