Plural component dispensing device

Claim 2

A liquid spray nozzle for receiving at least two liquid components for mixing and dispensing, comprising (a) a nozzle housing having inlets for separately receiving said liquid components, and having an internal passage therethrough along an axis, and having passages respectively coupling each of said inlets to axially spaced openings into said internal passage; (b) a mixing chamber member axially positioned in said nozzle housing internal passage, said member having axially spaced raised flanges sealably isolating respective axially spaced openings to create axially positioned circumferential passages, said mixing chamber member having an axial bore therethrough and having internal passages communicating between said axial bore and respective ones of said axially positioned circumferential passages; and (c) a retractable plunger sealably fitted in said mixing chamber member axial bore.

Claim 3

The apparatus of claim 1, wherein said mixing chamber internal passages further comprise a first set of passages at a first axial position radially directed from said axial bore to one of said circumferential passages, and a second set of passages at a second axial position non-radially directed from said axial bore to a second of said circumferential passages.

Claim 4

The apparatus of claim 2, wherein said axially spaced raised flanges further comprise three flanges of successively increasing size along said axis.

Claim 5

The apparatus of claim 3, wherein said flanges each have edge surfaces tapered along a common solid angle.

Claim 6

The apparatus of claim 4, wherein said mixing chamber first and second internal sets of passages are respectively located adjacent opposite sides of the central of said three flanges.

Claim 7

The apparatus of claim 5, wherein said retractable plunger is movable from a first position totally closing said axial bore to a second position opening all of said mixing chamber internal passages.

Claim 8

The apparatus of claim 1, wherein said axially spaced raised flanges further comprise three flanges of successively increasing size along said axis.

Claim 9

The apparatus of claim 7, wherein said flanges each have edge surfaces tapered along a common solid angle.

Claim 10

The apparatus of claim 8, wherein said mixing chamber internal passages further comprise a first set of passages at a first axial position radially directed from said axial bore to one of said circumferential passages, and a second set of passages at a second axial position tangentially directed from said axial bore to a second of said circumferential passages.

Claim 11

The apparatus of claim 9, wherein said mixing chamber first and second internal sets of passages are respectively located adjacent opposite sides of the central of said three flanges.

Claim 12

The apparatus of claim 1, wherein said retractable plunger is movable from a first position totally closing said axial bore to a second position opening all of said mixing chamber internal passages.

Claim 13

The apparatus of claim 11, wherein said axially spaced raised flanges further comprise three flanges of successively increasing size along said axis.

Claim 14

The apparatus of claim 12, wherein said flanges each have edge surfaces tapered along a common solid angle.

Claim 15

The apparatus of claim 13, wherein said mixing chamber internal passages further comprise a first set of passages at a first axial position radially directed from said axial bore to one of said circumferential passages, and a second set of passages at a second axial position tangentially directed from said axial bore to a second of said circumferential passages.

Claim 16

The apparatus of claim 14, wherein said mixing chamber first and second internal sets of passages are respectively located adjacent opposite sides of the central of said three flanges.

Claim 17

The apparatus of claim 1, wherein said mixing chamber member further comprises a single material construction.

Claim 18

The apparatus of claim 1, wherein said molded material further comprises plastic.

Claim 19

The apparatus of claim 16, wherein said axially spaced raised flanges further comprise three flanges of successively increasing size along said axis.

Claim 20

The apparatus of claim 18, wherein said flanges each have edge surfaces tapered along a common solid angle.

Claim 21

The apparatus of claim 19, wherein said mixing chamber internal passages further comprise a first set of passages at a first axial position radially directed from said axial bore to one of said circumferential passages, and a second set of passages at a second axial position tangentially directed from said axial bore to a second of said circumferential passages.

Claim 22

The apparatus of claim 20, wherein said mixing chamber first and second internal sets of passages are respectively located adjacent opposite sides of the central of said three flanges.

Claim 23

A mixing chamber and nozzle assembly for mixing and dispensing at least two liquid components, comprising: (a) a nozzle housing having an internal opening therethrough symmetrically displaced about an axis, and having means for separately coupling to respective different liquid components and internal nozzle passages for delivering said liquid components to said internal opening at respective different axial positions; (b) a mixing chamber member axially positioned in said housing internal opening, said member having circumferential raised flanges sealably contacting said nozzle housing at respective different axial positions bracketing said internal nozzle passages opening into said housing, thereby forming circumferential passages between said mixing chamber and said housing, said mixing chamber having an axial bore therethrough and at least one passage communicating between said axial bore and each of said circumferential passages; and (c) a retractable plunger sealably fitted in said mixing chamber axial bore.

Claim 24

A mixing chamber and nozzle assembly for mixing and dispensing at least two liquid components, comprising: (a) a nozzle housing having an internal opening therethrough symmetrically displaced about an axis, and having means for separately coupling to respective different liquid components and internal nozzle passages for delivering said liquid components to said internal opening at respective different axial positions; (b) a mixing chamber member axially positioned in said housing internal opening, said member having circumferential raised flanges sealably contacting said nozzle housing at respective different axial positions bracketing said internal nozzle passages opening into said housing, thereby forming circumferential passages between said mixing chamber and said housing, said mixing chamber having an axial bore therethrough and at least one passage communicating between said axial bore and each of said circumferential passages; and (c) a retractable plunger sealably fitted in said mixing chamber axial bore.

Claim 25

The apparatus of claim 22, wherein said circumferential flanges each further comprise a conical edge surface engageable against said housing.

Claim 26

The apparatus of claim 23, wherein said flanges further comprise three flanges of successively increasing size along said axis.

Claim 27

The apparatus of claim 24, wherein all of said flanges have respective conical edge surfaces aligned along a common solid angle.

Claim 28

The apparatus of claim 25, wherein said solid angle is approximately thirty degrees.

Claim 29

The apparatus of claim 24, wherein said mixing chamber passages communicating between said axial bore and said circumferential passages further comprise a first set of radial passages from said axial bore to one of said circumferential passages and opening into said circumferential passage adjacent a first side of the middle of said three flanges; and a second set of tangential passages from said axial bore to another of said circumferential passages and opening into said other circumferential passage adjacent a second side of the middle of said three flanges.

Claim 30

The apparatus of claim 27, wherein all of said flanges have respective conical edge surfaces aligned along a common solid angle.

Claim 31

The apparatus of claim 28, wherein said solid angle is approximately thirty degrees.

Claim 32

The apparatus of claim 29, wherein said first set of radial passages further comprise four equally spaced passages.

Claim 33

The apparatus of claim 30, wherein said second set of tangential passages further comprise four equally spaced passages.

Claim 34

The apparatus of claim 22, wherein said mixing chamber passages communicating between said axial bore and said circumferential passages further comprise a first set of radial passages from said axial bore to one of said circumferential passages, and a second set of non-radial passages from said axial bore to another of said circumferential passages.

Claim 35

The apparatus of claim 32, wherein said first set of radial passages further comprise four equally spaced passages.

Claim 36

The apparatus of claim 33, wherein said second set of tangential passages further comprise four equally spaced passages.

Claim 37

The apparatus of claim 32, wherein said circumferential flanges each further comprise a conical edge surface engageable against said housing.

Claim 38

The apparatus of claim 35, wherein said flanges further comprise three flanges of successively increasing size along said axis.

Claim 39

The apparatus of claim 36, wherein all of said flanges have respective conical edge surfaces aligned along a common solid angle.

Claim 40

The apparatus of claim 37, wherein said solid angle is approximately thirty degrees.