ALTERNATIVE PISTON PUMP FOR MACHINES DISPENSING DYES, PAINTS OR SIMILAR PRODUCTS

• US 20100209269A1
• Filed: 06/26/2008
• Published: 08/19/2010
• Est. Priority Date: 06/29/2007
• Status: Abandoned Application

• Current Assignee: CPS Color Equipment SpA Con Unico Socio
• Original Assignee: CPS Color Equipment SpA Con Unico Socio
• Inventors: Solera, Giuliano
• Application Number:
  US12/667,113
• Publication Number:
  US 20100209269A1
• Time in Patent Office: Days
• US Class Current: 417/415
• CPC Class Codes: F04B 43/0072 of tubular flexible members
• CPC Class Codes: F04B 43/084 the tubular member being deformed by stretching or distortion
• CPC Class Codes: F04B 53/143 Sealing provided on the piston
• CPC Class Codes: F05C 2225/00 Synthetic polymers, e.g. plastics; Rubber

Abstract

An alternative piston pump, able to take in and dispense a determinate quantity of a dye, paint or similar product, comprising a container having a cylindrical cavity inside which a piston is able to slide axially, and a sleeve extendible axially and rigid radially, inserted into said cylindrical cavity and having a first end connected to said piston. The sleeve extendible axially and rigid radially has a second end connected through a flange to a closing plate, able to close one end of the cylindrical cavity, and the piston and the sleeve extendible axially and rigid radially are made in a single piece.

Claims

1. An alternative piston pump, able to take in and dispense a determinate quantity of a dye, paint or similar product, comprising a container having a cylindrical cavity inside which a piston is able to slide axially, and a sleeve extendible axially and rigid radially, inserted into said cylindrical cavity and having a first end connected to said piston, wherein said sleeve extendible axially and rigid radially has a second end connected through a flange to a closing plate, able to close one end of said cylindrical cavity, and in that wherein at least said piston and said sleeve extendible axially and rigid radially are made in a single piece.

2. The alternative piston pump as in claim 1, wherein said closing plate is also made in a single piece with said sleeve extendible axially and rigid radially and said piston.

3. The alternative piston pump as in claim 1, wherein said container, said sleeve extendible axially and rigid radially, said piston and said closing plate are made of plastics of the technical type.

4. The alternative piston pump as in claim 3 wherein said plastics of the technical type are techno-polymers.

5. The alternative piston pump as in claim 1, wherein said sleeve extendible axially and rigid radially is coaxial with said cylindrical cavity and forms, with the wall of said cylindrical cavity, an annular chamber.

6. The alternative piston pump as in claim 1, wherein external linear actuation means is able to compress and expand said sleeve extendible axially and rigid radially.

7. The alternative piston pump as in claim 1, further comprising a tube disposed inside said sleeve extendible axially and rigid radially and fixed to said piston.

8. The alternative piston pump as in claim 6, wherein a tube is connected to said linear actuation means by means of connection means.

9. The alternative piston pump as in claim 8, wherein said communication means comprises a shaft.

10. The alternative piston pump as in claim 9, wherein said shaft is fixed in an axial cavity of said tube.

11. The alternative piston pump as in claim 6, wherein said external linear actuation means comprises a motor of the step-by-step type.

12. The alternative piston pump as in claim 7, wherein said tube is made in a single piece with a plate provided with at least two guide hollows, slidingly cooperating with corresponding fixed guide rods.

13. The alternative piston pump as in claim 1, wherein said container also comprises first conveyor means able to convey said quantity of dye inside said cylindrical cavity, when said sleeve extendible axially and rigid radially is compressed.

14. The alternative piston pump as in claim 13, further comprising second conveyor means able to convey said quantity of dye outside said cylindrical cavity, when said sleeve extendible axially and rigid radially expands.