Dispensing apparatus with improved fluid valve and air knife and method
US5735434A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1997 |
| Grant date | Apr 7, 1998 |
| Priority date | — |
| Expiry date | Feb 24, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67C3/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A dispensing apparatus for dispensing a material including a valve assembly comprising: a valve member movable in a reciprocating fashion along an axis, where the valve member includes a stem having at least one material transfer recess provided on the stem and a tapered dispensing end having an angle of taper. The valve member is movable between a first position where a discrete toroidal mass of material to be dispensed is formed at the dispensing end and a second position where a discrete toroidal mass of material to be dispensed is not formed at the dispensing end. The dispensing apparatus also includes a material dispensing assembly comprising having a fluid knife for moving the discrete toroidal mass to be dispensed from the dispensing end away from the dispensing end when the valve member is in the first position. The fluid knife is supplied substantially parallel to the angle of taper of the dispensing end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.