Patent ID: 6082637
Filing Date: 2000-07-04
Classification: B05B,B05C

Abstract:
A nozzle device for simultaneously discharging a gas and a viscous material, comprising(a) a front end, a rear end and a longitudinal axis;(b) an axially extending tubular, cylindrical outside part having(1) an inner wall;(2) an inner thread segment at said rear end; and(3) a shoulder;(c) a cap threaded on said outside part at said front end and having a discharge bore coaxial with said longitudinal axis; said discharge bore being composed of(1) a rearward cylindrical portion having a first diameter;(2) a frontal cylindrical portion having a second diameter less than said first diameter; and(3) a frustoconical portion connecting said rearward and frontal cylindrical portions with one another;(d) an axially extending inside part coaxially received in said outside part and having(1) an outer wall defining, with said inner wall of said outside part, an annular space for guiding the gas therethrough; said annular space being axially adjoined by said discharge bore of said cap;(2) a forwardly conically tapering end portion projecting into said frontal cylindrical portion of said discharge bore of said cap;(3) an axial bore for guiding the viscous material therethrough;(4) a nozzle bore axially adjoining said axial bore and having an outlet opening for discharging the viscous material; said outlet opening of said nozzle bore being situated within said frontal cylindrical portion of said discharge bore of said cap; and(5) two axially consecutive first and second stepped length portions at said rear end; said shoulder of said outside part supporting said first stepped length portion of said inside part; said first stepped length portion having an outer thread segment and said second stepped length portion adjoining said first stepped length portion and constituting a terminal portion; said inner thread segment of said outside part threadedly engaging said outer thread segment of said inside part; said second stepped length portion having an outer diameter greater than an outer diameter of said first stepped length portion;(e) a port provided in said outside part for introducing the gas into said annular space; and(f) at least three support lugs positioned in said annular space in engagement with said inner wall of said outside part and said outer wall of said inside part for coaxially positioning said inside part relative to said outside part.