Dispenser for pasty compositions
US4903867A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1988 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Jul 15, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/028
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Dispensers for pasty compositions having a housing (1) with a piston (2) which is displaceable only in the emptying direction and an actuating handle (H) which is developed on a head piece (5) which can be pressed bellows-like in the direction towards the piston (2) and has a dispenser outlet opening (O) from which there extends, directed inwards, a tube (7) whose inner mouth-end (7") dips freely into the pasty composition in every position of the bellows (B). A structural shape which is simple to manufacture and nevertheless dependable in operation, comprises a flap valve (9) with passage opening lying in the direction of the tube (7) (arrow z), below the inner mouth-end (7") of the tube (7), in the cover (8) of the housing (1) from which a mounting collar (6) for the bellows (B) extends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.