Member for dispensing a two-component mass from a tool separately discharging the components
US5429277A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1993 |
| Grant date | Jul 4, 1995 |
| Priority date | — |
| Expiry date | Jul 14, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F2025/918
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Member for mixing and dispensing a two-component mass from a tool arranged to separately squeeze-out the two components. The member includes a mixing tube (1) enclosing a coaxial tube section (2) connected to the front end (3) of the tool for conveying one of the components from a tool outlet (3b) to the mixing tube (1). Another tool outlet (3a) conveys the other component directly into the mixing tube (1). The tube section (2) has a one-way valve at an outlet opening (2b) into the mixing tube (1). The one-way valve includes an expandable tubular sheath (5) covering the outlet opening (2b) through the tube section (2). The one-way valve prevents any backflow of the mixed components from the mixing tube into the tube section. Mixed components which harden within the mixing tube (1) form a seal or block. Accordingly, when the tool squeezing out the component is operated with a blocked or sealed mixing tube, no backflow into the tool can occur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.