Plural component dispensing device and method

Claim 3

The apparatus for dispensing plural component material as claimed in claim 1, wherein the means including each of the spaced-apart apertures directly adjoins a separate source of each of the components, said apertures having a short length tangential to the mixing chamber.

Claim 4

The apparatus for dispensing plural component material as claimed in claim 2, wherein the one aperture is spaced on the periphery of the mixing chamber walls about 180* from another aperture.

Claim 5

The apparatus for dispensing plural component material as claimed in claim 3, wherein the cross sectional area of the orifice is substantially the same as the cross sectional area of the mixing chamber.

Claim 6

The apparatus for dispensing plural component material as claimed in claim 1, wherein the air is used to assist in atomizing the material upon ejection from the orifice.

Claim 7

Apparatus for mixing the plural components of a multicomponent material and dispensing or spraying the mixed material comprising a housing including an opening in its forwardmost end, said housing being adapted to connect the opening to a source of air, and being adapted at its forward end to carry connections to separate means to supply the components of the multicomponent material; movable means carried by the housing, said movable means including a mixing chamber for the components and an orifice connected with the mixing chamber to dispense the mixed material, and separate apertures for each of the components of material opening into the mixing chamber; and an actuator to move said movable means with respect to the housing between a first position where each of the separate apertures directly adjoins each of the connections to the separate component-supply means and permits flow of the components through the apertures to the mixing chamber, said orifice from which mixed material is dispensed being located at said first position so that a flow of air can act on the mixed multicomponent material, and a second position where said movable means blocks each of the separate component-supply means and terminates the flow of mixed material, and where the apertures are positioned in communication with the source of air to direct a flow of air through the apertures, the mixing chamber and the orifice for purging and cleaning.

Claim 8

Apparatus for mixing the plural components of a multicomponent material and dispensing or spraying the mixed material comprising a housing including an opening in its forwardmost end, said housing being adapted to connect the opening to a source of air, and being adapted at its forward end to carry connections to separate means to supply the components of the multicomponent material; movable means carried by the housing, said movable means including a mixing chamber for the components and an orifice connected with the mixing chamber to dispense the mixed material, and separate apertures for each of the components of material opening into the mixing chamber; and an actuator to move said movable means with respect to the housing between a first position where each of the separate apertures directly adjoins each of the connections to the separate component-supply means and permits flow of the components through the apertures to the mixing chamber, said orifice from which mixed material is dispensed being located at said first position so that a flow of air can act on the mixed multicomponent material, and a second position where said movable means blocks each of the separate component-supply means and terminates the flow of mixed material, and where the apertures are positioned in communication with the source of air to direct a flow of air through the apertures, the mixing chamber and the orifice for purging and cleaning.

Claim 9

The apparatus as set forth in claim 6, wherein the movable means is slidably carried within the housing behind the opening and includes a forwardmost portion of reduced size capable of extending through the opening, said forwardmost part of the movable means and the housing forming an air chamber adjacent the opening, wherein the movable member carries a seal on the forwardmost part adapted to cooperate with a portion of the housing rearwardly of the opening to seal this opening, and wherein at the second position the apertures are positioned in the air chamber and the seal on the movable means is seated on the housing to close the opening.

Claim 10

The apparatus as set forth in claim 7, wherein the forwardmost part of the movable means moves through said opening and air is permitted to flow through said opening as said movable means slides from said first position to said second position.

Claim 11

The apparatus as set forth in claim 6, wherein said housing includes first means to supply air at high pressure to said movable means and second means to supply air at controlled pressure to said movable means, and at said first position the movable means blocks flow from said first means and directs a flow of air at controlled pressure from said second means through said opening for atomization of the mixed material, and at said second position said movable means directs a flow of air at high pressure from said first means to clean said spaced-apart apertures, the mixing chamBer and the orifice.

Claim 12

The apparatus as set forth in claim 6, wherein said housing includes a handle, and said actuator is operated by a trigger attached to said housing and includes an energy storage means to automatically slide said movable means from said first position to said second position upon release of said trigger.

Claim 13

Apparatus for mixing the plural components of a multicomponent material and dispensing the mixed material, comprising a housing including an opening in its forwardmost end, said housing being adapted to connect the opening to a source of air, and being adapted to carry connections to separate means to supply the components of the multicomponent material; movable means slidably carried within the housing, said movable means being adapted to seal the connections to the separate component supply means and to the air opening of the housing and including a mixing chamber for the components and an orifice connected with the mixing chamber to dispense the mixed material, and separate apertures for each of the components of material opening into the mixing chamber; and an actuator to slide said movable means with respect to the housing between a first position where each of the separate apertures are positioned in communication with each of the connections to the separate component-supply means and permits flow of the components through the apertures to the mixing chamber, and a second position where said movable means seals each of the separate component-supply means and the air opening of the housing and terminates the flow of mixed material, and where the apertures are positioned in communication with the source of air to direct a flow of air through the apertures, the mixing chamber and the orifice for purging and cleaning.

Claim 14

Apparatus for mixing the plural components of a multicomponent material and dispensing the mixed material, comprising a housing including an opening in its forwardmost end, said housing being adapted to connect the opening to a source of air, and being adapted to carry connections to separate means to supply the components of the multicomponent material; movable means slidably carried within the housing, said movable means being adapted to seal the connections to the separate component supply means and to the air opening of the housing and including a mixing chamber for the components and an orifice connected with the mixing chamber to dispense the mixed material, and separate apertures for each of the components of material opening into the mixing chamber; and an actuator to slide said movable means with respect to the housing between a first position where each of the separate apertures are positioned in communication with each of the connections to the separate component-supply means and permits flow of the components through the apertures to the mixing chamber, and a second position where said movable means seals each of the separate component-supply means and the air opening of the housing and terminates the flow of mixed material, and where the apertures are positioned in communication with the source of air to direct a flow of air through the apertures, the mixing chamber and the orifice for purging and cleaning.

Claim 15

The apparatus as set forth in claim 11, wherein said housing includes first means to supply air at high pressure to said movable means and second means to supply air at controlled pressure to said movable means, and wherein at said first position the movable means seals said first means and directs a flow of air at controlled pressure from said second means through said opening for atomization of the mixed material, said orifice from which mixed material is dispensed being located at said first position in said opening, and wherein at said second position, said movable means directs a flow of air at high pressure from said first means to clean said separate apertures, the mixing chamber and the orifice.

Claim 16

A gun for mixing and spraying the plural components of a multicomponent material comprising a housing including an air chamber with an opening at its forwardmost end, said housing being adapted to connect the air chamber with a source of air, and being adapted to carry connections to separate means to supply the components of the multi-component material; a movable valve-forming means slidably carried within the housing, said movable valve-forming means including a portion including a mixing chamber for the components with a dispensing orifice and including outer surfaces adapted to seal the connections to the separate component supply means but having apertures connected with the mixing chamber, and a seal to cooperate with the housing in the air chamber to close the opening; and actuator means to slide said movable valving means within the housing between a first position where the apertures of the outer surfaces are positioned in communication with the separate component supply means to permit flow of the components through the apertures to the mixing chamber, said dispensing orifice for mixing material being located at said first position in the housing opening so that a flow of air can break up the mixed multicomponent material, and a second position where the outer surfaces block the separate component supply means and terminate the flow of mixed material, the apertures are positioned in the air chamber, and the seal on said movable means is seated on the housing to close the oPening and direct a flow of air through the apertures, the mixing chamber and the orifice for purging and cleaning.

Claim 17

A gun for mixing and spraying the plural components of a multicomponent material comprising a housing including an air chamber with an opening at its forwardmost end, said housing being adapted to connect the air chamber with a source of air, and being adapted to carry connections to separate means to supply the components of the multi-component material; a movable valve-forming means slidably carried within the housing, said movable valve-forming means including a portion including a mixing chamber for the components with a dispensing orifice and including outer surfaces adapted to seal the connections to the separate component supply means but having apertures connected with the mixing chamber, and a seal to cooperate with the housing in the air chamber to close the opening; and actuator means to slide said movable valving means within the housing between a first position where the apertures of the outer surfaces are positioned in communication with the separate component supply means to permit flow of the components through the apertures to the mixing chamber, said dispensing orifice for mixing material being located at said first position in the housing opening so that a flow of air can break up the mixed multicomponent material, and a second position where the outer surfaces block the separate component supply means and terminate the flow of mixed material, the apertures are positioned in the air chamber, and the seal on said movable means is seated on the housing to close the oPening and direct a flow of air through the apertures, the mixing chamber and the orifice for purging and cleaning.

Claim 18

The apparatus as set forth in claim 13, wherein said movable valve-forming means includes an air-passing portion between the air chamber and air source carrying a seal, wherein said housing includes first means to supply air at high pressure to said air-passing portion of the movable valve-forming means and second means to supply air at controlled pressure to said air-passing portion of the movable valve-forming means, and wherein at said first position the seal carried by the air-passing portion blocks air flow from said first means and permits a flow of air at controlled pressure through said air-passing portion to said air chamber in said housing and through said opening for atomization, and at said second position, said air-passing portion permits a flow of air at high pressure through the air-passing portion to the air chamber to clean the apertures, the mixing chamber and the orifice.

Claim 19

The apparatus as set forth in claim 14, wherein high pressure air is permitted to flow through said opening as said movable valve-forming means slides from said first position to said second position.

Claim 20

The apparatus as set forth in claim 13, wherein the portion of the movable valve-forming means defining the dispensing orifice is of reduced size capable of extending through the opening of the housing and the actuator means slides the movable valve-forming means forwardly within the housing moving the dispensing orifice forwardly through the opening at the second position.

Claim 23

The method of claim 17 including the step of terminating the dispensing of mixed components by moving the mixing means and dispensing orifice to a cleansing position thereby blocking the flow of the components into the mixing means and directing a flow of air through the mixing means and dispensing orifice for purging and cleansing the mixing means and dispensing orifice.

Claim 24

The method set forth in claim 17, including blocking the flow of air while said mixing means and orifice are in the dispensing position to permit pouring of mixed material.

Claim 25

A hand gun for mixing and dispensing the components of a plural component material capable of connection to separate component supply sources and to a source of compressed air comprising a gun housing forming a handle and a barrel and carrying an actuator controlled by trigger means adjacent the handle, said housing having means adapted for connection to the source of compressed air; means for connecting said housing to each of the separate component supply sources; and means forming a mixing chamber for the components, including separate apertures for introducing each of the components into the mixing chamber and an orifice to dispense the mixed plural component materials, said means forming the mixing chamber and said means for connecting said housing to each of the separate component supply sources being carried at the forward portion of the barrel to permit movement relative to each other, and said actuator being connected at the front of the barrel to cause, upon actuation of said trigger means, relative movement of said means between a first position where each of the separate apertures directly adjoins each of the connecting means and permits flow of the components through the apertures to the mixing chamber, and a second position where the means forming the mixing chamber blocks each of the connecting means and terminates the flow of mixed material, and where the apertures are positioned in communication with the source of air to direct a flow of air through the apertures, the mixing chamber and the orifice for purging and cleaning.

Claim 26

A hand gun for mixing and dispensing the components of a plural component material capable of connection to separate component supply sources and to a source of compressed air comprising a gun housing forming a handle and a barrel and carrying an actuator controlled by trigger means adjacent the handle, said housing having means adapted for connection to the source of compressed air; means for connecting said housing to each of the separate component supply sources; and means forming a mixing chamber for the components, including separate apertures for introducing each of the components into the mixing chamber and an orifice to dispense the mixed plural component materials, said means forming the mixing chamber and said means for connecting said housing to each of the separate component supply sources being carried at the forward portion of the barrel to permit movement relative to each other, and said actuator being connected at the front of the barrel to cause, upon actuation of said trigger means, relative movement of said means between a first position where each of the separate apertures directly adjoins each of the connecting means and permits flow of the components through the apertures to the mixing chamber, and a second position where the means forming the mixing chamber blocks each of the connecting means and terminates the flow of mixed material, and where the apertures are positioned in communication with the source of air to direct a flow of air through the apertures, the mixing chamber and the orifice for purging and cleaning.

Claim 27

The hand gun of claim 20 wherein the housing includes a plurality of passageways connected with the source of compressed air, one passageway intersecting a bore formed within the housing in which the means forming the mixing chamber moves and a second passageway including an adjustable valve and intersecting the bore, the bore including an air-passing portion between the intersection of the first and second passageways, the means forming the mixing chamber being connected to the actuator by a rod operating a seal wherein at the first position the seal blocks the air-passing portion of the bore so that the bore is connected to the source of compressed air through the second passageway and the adjustable valve, and at the second position the air-passing portion is open so that the bore is connected to the source of compressed air by both the first and second passageways.

Claim 28

The hand gun of claim 20 wherein the actuator is air-operated and the trigger means operates a four-way valve to direct a flow of compressed air to the actuator to effect its operation and to move the means forming a mixing chamber between the first and second positions.

Claim 29

The hand gun of claim 20 wherein the means forming the mixing chamber includes flat and smooth sides having said separate apertures, and means for being connected to each of the separate component supply means are removably carried by the housing and include seals cooperating with the flat and smooth sides of the means forming the mixing chamber.