Controllable spray nozzle assembly
US5707010A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1995 |
| Grant date | Jan 13, 1998 |
| Priority date | — |
| Expiry date | Sep 29, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B15/5225
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A controllable spray nozzle assembly with an elongated discharge passageway is provided with a short discharge orifice and valve seat insert element that is made separately for ease and accuracy of providing its orifice and valve seat and is mounted in sliding sealing relation with the outlet end of the passageway. A valve needle extends into the passageway and is selectively movable along the passageway for shut-off and/or flow rate control of the spray flow by the related axial positioning of its seat end relative to the separate discharge orifice and valve seat element that is inserted at the outlet end of the passageway. The separate discharge element has an external configuration that conforms to a portion of the nozzle body adjacent the outlet end for such seating thereon. The element's internal configuration defines a small discharge orifice through the element and a valve seat around the inner end of that orifice in opposed relation to the seat on the valve needle. The configuration and seating relation of the discharge element on the nozzle body assure that the orifice and the valve seat of the element are coaxially aligned with the adjacent end of the valve needle. The ne…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.