Adhesive foam generating nozzle
US4632314A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1985 |
| Grant date | Dec 30, 1986 |
| Priority date | — |
| Expiry date | Jun 5, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/26
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A nozzle assembly adapted with an adhesive spray gun for forming a liquid adhesive/gas solution into a foam includes a nozzle formed with a chamber having a rearward end and a forward discharge orifice which is maintained at a pressure less than that required to maintain the gas in solution in the liquid. A turbulence plate having a front surface formed with a notch is mounted to the spray gun such that the notch extends within the rearward end of the chamber. The notch is formed with at least two input ends and a turbulence zone therebetween. The liquid/gas solution is conveyed to each input end of the notch where a separate stream of solution is formed. The streams move along the notch from each input end toward the turbulence zone of the notch where they impact one another within the chamber. Agitation of the liquid/gas solution caused by impacting of the separate streams, in the presence of the reduced pressure within the chamber, results in the partial or initial formation of a homogeneous, closed cell solid foam within the chamber prior to emission from the discharge orifice.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.