Nozzle for delivering a conic spray pattern

Claim 2

A fluid discharge nozzle for delivery of a conically shaped spray consisting of an outer hollow body having a fluid emission orifice opening from one end, a plurality of raised lands spaced about the hollow body interior adjacent said emission orifice, said lands defining grooves therebetween and said grooves having portions directed generally tangentially toward said emission orifice, a thimble body disposed within said hollow body and having a transverse wall spaced from said emission orifice to form a fluid swirl chamber for the fluid, said thimble body having a side wall spaced from the interior of said hollow body by engaging on said lands thereby forming an annular chamber for reception of the fluid, means to supply fluid into said annular chamber through said hollow body, and means retaining said thimble body within said hollow body against displacement by the fluid pressure.

Claim 3

The fluid discharge nozzle set forth in claim 1 wherein said thimble transverse wall is dome shaped upwardly away from said emission orifice.

Claim 4

The fluid discharge nozzle set forth in claim 1 wherein said thimble transverse wall is conically shaped with its conic wall directed away from said emission orifice at an angle of from 20* to 25*.

Claim 5

The fluid discharge nozzle set forth in claim 1 wherein said raised lands have portions defining a generally cylindrical seat, and said thimble body having a generally cylindrical side wall slidably engaged on said cylindrical land portions to maintain said annular chamber.

Claim 6

The fluid discharge nozzle set forth in claim 1 wherein said retaining means for said thimble body consists in a stepped flange on said hollow body providing an annular seat surface, an annular rib formed within said stepped flange in spaced relation from said seat surface, and a flange on said thimble body sized to snap past said annular rib and be retained by said rib on said annular seat surface.

Claim 7

A fluid discharge nozzle for delivery of a conically shaped spray consisting of an outer hollow body having a generally cylindrical side wall open at one end and having a floor at the opposite end, a fluid emission orifice opening outwardly through said floor, a plurality of circumferentially spaced land surfaces formed on the interior of said hollow body and having portions parallel with said cylindrical wall and portions slanted inwardly tangentially toward said emission orifice, said lands defining a plurality of grooves for the flow of the fluid over said floor in a swirling pattern, a thimble body having a generally cylindrical side wall slidably received adjacent said parallel land surface portions and maintained thereby spaced from said hollow body side wall, said thimble body having an end wall formed with slanted surfaces substantially matching said slanted land portions and a dome-shaped wall portion directed away from said hollow body floor to form with said floor a fluid swirl chamber adjacent said emission orifice, an annular lip on said thimble body seated within said open end of said hollow body, means on said open end of said hollow body retaining said thimble body within said hollow body against the pressure of the fluid, and fluid supply means on said hollow body opening through said side wall into the space between said hollow body and thimble body.

Claim 8

A fluid discharge nozzle for delivery of a conically shaped spray consisting of an outer hollow body having a generally cylindrical side wall open at one end and having a floor at the opposite end, a fluid emission orifice opening outwardly through said floor, a plurality of circumferentially spaced land surfaces formed on the interior of said hollow body and having portions parallel with said cylindrical wall and portions slanted inwardly tangentially toward said emission orifice, said lands defining a plurality of grooves for the flow of the fluid over said floor in a swirling pattern, a thimble body having a generally cylindrical side wall slidably received adjacent said parallel land surface portions and maintained thereby spaced from said hollow body side wall, said thimble body having an end wall formed with slanted surfaces substantially matching said slanted land portions and a dome-shaped wall portion directed away from said hollow body floor to form with said floor a fluid swirl chamber adjacent said emission orifice, an annular lip on said thimble body seated within said open end of said hollow body, means on said open end of said hollow body retaining said thimble body within said hollow body against the pressure of the fluid, and fluid supply means on said hollow body opening through said side wall into the space between said hollow body and thimble body.

Claim 9

The fluid discharge nozzle set forth in claim 3 wherein said thimble transverse wall is conically shaped with its conic wall directed away from said emission orifice at an angle of from 20* to 25*.

Claim 10

The fluid discharge nozzle set forth in claim 6 wherein said means retainiNg said thimble body in said hollow body consists of lugs on the exterior of said hollow body and cap means removably engaged with said lugs, said cap means having an axially directed rib projecting into said hollow body to engage on said thimble body adjacent said annular lip.

Claim 11

The fluid discharge nozzle set forth in claim 6 wherein said fluid supply means consists of a tubular portion on said outer hollow body having an interior wall formed with at least one circumferential bead extending radially inwardly, and a fluid conducting means pressed into said tubular portion passed said circumferential bead.

Claim 12

The fluid discharge nozzle set forth in claim 6 wherein said thimble dome-shaped wall is provided with fin means to disturb the fluid swirl and cause issue of a full body of spray.