초록

A method and apparatus for extruding the first fluid capable of foaming through a porous member to produce a first foamed extrudate while simultaneously dispensing a second flowable material preferably containing particulate matter adjacent the first extrudate.

대표청구항 ▼

We claim: 1. A dispensing pump comprising: a first reservoir with a first fluid; a second reservoir with a dry particulate solid flowable material capable of flowing under gravity, a vertical fluid dispensing tube having a lower end for dispensing the fluid downwardly, and a flowable material outle

We claim: 1. A dispensing pump comprising: a first reservoir with a first fluid; a second reservoir with a dry particulate solid flowable material capable of flowing under gravity, a vertical fluid dispensing tube having a lower end for dispensing the fluid downwardly, and a flowable material outlet disposed about the fluid dispensing tube adjacent thereto at a height above the lower end of the fluid dispensing tube for simultaneously dispensing the flowable material downwardly therefrom, a single piston member within a piston chamber-forming element defining therebetween a first fluid chamber having an inlet in communication with the first reservoir and the fluid dispensing tube as an outlet and a flowable material chamber having an inlet in communication with the second reservoir and an outlet in communication with the flowable material outlet, the piston member reciprocally movable in the piston chamber-forming element and in movement in a first direction, the first fluid is drawn into the first fluid chamber and the inlet to the flowable material chamber is opened and in movement in the opposite direction, the first fluid is expelled from the fluid dispensing tube and the inlet to the flowable material chamber is closed, reciprocal movement of the piston member in the piston chamber-forming element simultaneously extruding the first fluid from the lower end of the fluid dispensing tube and the flowable material from the solid material outlet. 2. A pump as claimed in claim 1 wherein the flowable material outlet is annular about the fluid dispensing tube. 3. A pump as claimed in claim 1 wherein: the first fluid is capable of foaming; and the pump further including: a porous member between the first reservoir and the lower end of the fluid dispensing tube, and an air pump to pressurize atmosphere air and simultaneously pass air and the first fluid through the porous member to produce an intermediate product to be dispensed out the lower end of the fluid dispensing tube. 4. A pump as claimed in claim 1 wherein flowable material is selected from the group comprising grit, pumice, plastic synthetic resin scrubber particles, wood powder, ground sponge, ground cork and finely divided silica. 5. A pump as claimed in claim 2 wherein the flowable material is selected from the group comprising grit, pumice, plastic synthetic resin scrubber particles, wood powder, ground sponge, ground cork and finely divided silica. 6. A pump as claimed in claim 3 wherein the flowable material outlet is annular about the fluid dispensing tube. 7. A pump as claimed in claim 3 wherein the second fluid is a fluid comprising solid particulate material which will not pass through the porous member and the solid particulate material is selected from the group comprising grit, pumice, plastic synthetic resin scrubber particles, wood powder, ground sponge, ground cork and finely divided silica. 8. A dispensing pump comprising: a first reservoir with a first fluid; a second reservoir with a flowable material comprising a second fluid capable of flowing under gravity, a vertical fluid dispensing tube having a lower end for dispensing the first fluid downwardly, and a flowable material outlet disposed about the fluid dispensing tube adjacent thereto at a height above the lower end of the fluid dispensing tube for simultaneously dispensing the flowable material downwardly therefrom, the first fluid is a liquid capable of foaming; a porous member between the first reservoir and the lower end of the fluid dispensing tube, a single piston member within a piston chamber-forming element defining therebetween an air chamber having an air inlet and an air outlet, a first fluid chamber having an inlet in communication with the first reservoir and an outlet, and a second fluid chamber having an inlet in communication with the second reservoir and wherein the piston member is reciprocally movable in the piston chamber forming element and in movement in a first direction, air is drawn into the air chamber, the first fluid is drawn into the first fluid chamber and the second fluid is drawn into the second fluid chamber and in movement in the opposite direction, air expelled from the air outlet of the air chamber, the first fluid is expelled from the outlet of the first fluid chamber and the second fluid is expelled from the outlet of the second fluid chamber, wherein the first fluid and air are pressurized and simultaneously passed through the porous member to produce an intermediate product including foam which is extruded out the lower end of the fluid dispensing tube, and the second fluid is simultaneously extruded out the flowable material outlet by the movement of the single piston member. 9. A pump as claimed in claim 8 wherein the second fluid is selected from a fluid comprising solid particulate material which will not pass through the porous member and a fluid having sufficiently high viscosity that it will not pass through the porous member. 10. A pump as claimed in claim 8 wherein the flowable material outlet is annular about the fluid dispensing tube. 11. A pump as claimed in claim 8 wherein the second fluid is a fluid comprising solid particulate material which will not pass through the porous member and the solid particulate material is selected from the group comprising grit, pumice, plastic synthetic resin scrubber particles, wood powder, ground sponge, ground cork and finely divided silica. 12. A pump as claimed in claim 11 wherein the flowable material outlet is annular about the fluid dispensing tube. 13. A dispensing pump comprising: a first reservoir with a first fluid; a second reservoir with a flowable material capable of flowing under gravity, a vertical fluid dispensing tube having a lower end for dispensing the first fluid downwardly, and a flowable material outlet disposed about the fluid dispensing tube adjacent thereto at a height above the lower end of the fluid dispensing tube for simultaneously dispensing the flowable material downwardly therefrom, the first fluid is a liquid capable of foaming; a porous member between the first reservoir and the lower end of the fluid dispensing tube, the flowable material is selected from the group consisting of dry, solid particulate material, a fluid comprising solid particulate material which will not pass through the porous member and a fluid having sufficiently high viscosity that it will not pass through the porous member, a single piston member within a piston chamber-forming element defining therebetween an air chamber having an air inlet and an air outlet, a first liquid chamber having an inlet in communication with the first reservoir and an outlet, and a second fluid chamber having an inlet in communication with the second reservoir and wherein the piston member is reciprocally movable in the piston chamber forming element and in movement in a first direction, air is drawn into the air chamber, the first fluid is drawn into the first fluid chamber and the flowable material flows under gravity into the second fluid chamber and in movement in the opposite direction, air expelled from the air outlet of the air chamber, the first fluid is expelled from the outlet of the first fluid chamber and the flowable material is expelled from the outlet of the second fluid chamber, wherein the first fluid and air are pressurized and simultaneously passed through the porous member to produce an intermediate product including foam which is extruded out the lower end of the fluid dispensing tube, and the flowable material is simultaneously expelled out the flowable material outlet by the movement of the single piston member. 14. A pump as claimed in claim 13 wherein the solid particulate material is selected from the group comprising grit, pumice, plastic synthetic resin scrubber particles, wood powder, ground sponge, ground cork and finely divided silica. 15. A pump as claimed in claim 13 wherein the flowable material outlet is annular about the fluid dispensing tube. 16. A pump as claimed in claim 14 wherein the flowable material outlet is annular about the fluid dispensing tube.