Device for applying free-flowing material to a substrate moveable with respect thereto
US7147136B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2002 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | Jan 29, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05C5/0225
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A device for dispensing fluid material onto a substrate including a base body with a flow channel for receiving the fluid material and a movable valve body positioned in the flow channel. The valve body is movable in a downstream direction into an open position to release a flow of the fluid material into the flow channel and is movable in an upstream direction into a closed position to interrupt the flow of the fluid material into the flow channel. A drive device moves the valve body between the open position and the closed position. A cylindrical chamber is positioned in the flow channel and the valve body includes a piston movable within the cylindrical chamber. The piston is sealed within the cylindrical chamber in such a way that when the piston moves in a first direction within the cylindrical chamber, the fluid material is displaced from the flow channel and when the piston is moved in a second direction opposite to the first direction, the fluid material is drawn into the flow channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.