Plural component spray gun for fast setting materials

Patent metadata

Field	Value
Publication number	US-RE46002-E
Application number	US-200313446222-A
Country	US
Kind code	E1
Filing date	Oct 22, 2003
Priority date	Oct 22, 2002
Publication date	May 17, 2016
Grant date	May 17, 2016

Abstract

A plural component spray gun ( 1 ) is designed for spraying quick setting materials such as foams, polyurea and the like. Towards this end, the gun ( 1 ) is designed so as to be easily serviceable with a minimum of tools. For example, the side seal cartridges ( 18 ) and ( 20 ) may be installed and removed without tools by removing the retaining ring ( 9 ) and then extracting them from the fluid housing ( 11 ). Those cartridges ( 18 ) and ( 20 ) are easily disassembled and cleaned. Similarly, the fluid housing ( 11 ) may be removed from the handle/body ( 1 ) by unscrewing the lock ring ( 7 ) by hand.

First claim

The invention claimed is:

1. A spray gun for fast setting plural component materials, said spray gun comprising:
a gun body;
an air cap;
a retaining ring;
a fluid housing removably attached to said gun body, said fluid housing having a threaded surface for threadedly receiving said retaining ring and generally opposed first and second radial ports in said threaded surface; and
first and second seal cartridges retained in said ports by friction and said retaining ring.

2. The spray gun of claim 1 wherein said air valve engages said gun body with no more than three seals.

3. The spray gun of claim 1 wherein said air valve is connected to a muffler in said gun body.

4. The spray gun of claim 1 further comprising a fluid manifold removably fastened to said fluid housing, said fluid manifold being sealed thereto by an o-ring.

5. The spray gun of claim 1 further comprising a fluid manifold, said fluid manifold comprising a body and first and second fluid valves for connection to first and second components of a plural component material, each of said first and second valves comprising
a one piece stem having a head thereon to allow manipulation to open or closed positions; and
a seal for sealingly engaging said manifold body.

6. The spray gun of claim 1 further comprising:
a mix chamber located in said fluid housing;
a purge air passage located in said fluid housing;
a zerk fitting in said fluid housing and connected to said purge air passage for receiving protective material.

7. The spray gun for fast setting plural component
materials of claim 1 further comprising a fluid housing having a mix chamber located therein and said first and second seal cartridges sealing against said mix chamber, said cartridges and said mix chamber comprising sealing surfaces comprised of a hardened material.

8. The spray gun for fast setting plural component materials of claim 7 wherein said mix chamber is formed from a hardened material.

9. The spray gun for fast setting plural component materials of claim 8 wherein said hardened material is 440C stainless steel.

10. The spray gun for fast setting plural component materials of claim 1 further comprising a grease fitting in said fluid housing for injection of grease into said spray gun for storage.

11. A spray gun for fast setting plural component materials, said spray gun comprising:
a gun body;
an air cap;
a fluid housing attached to said gun housing body and receiving said air cap and generally;
a mix chamber located in said fluid housing;
a purge air passage located in said fluid housing; and
a zerk grease fitting in said fluid housing and connected to said purge air passage for receiving protective material through which grease is injected into the fluid housing for storage.

12. The spray gun for fast setting plural component materials of claim 6 wherein the fitting is disposed in the fluid housing.

13. The spray gun for fast setting plural component materials of claim 6 wherein the fitting comprises a zerk fitting.

14. The spray gun for fast setting plural component materials of claim 11 wherein the grease fitting is disposed in the fluid housing.

15. The spray gun for fast setting plural component materials of claim 11 wherein the purge air passage extends from the gun body through the fluid housing.

16. The spray gun for fast setting plural component materials of claim 11 further comprising:
first and second seal cartridges sealing against said mix chamber; wherein said cartridges and said mix chamber comprise sealing surfaces comprised of a hardened material.

Assignees

• Zittel Douglas P
• Sebion Michael J
• Anderson Richard D
• Linder Peter L
• Pellin Christopher J
• Weinberger Mark T
• Richter Mark C
• Graco Minnesota Inc

Inventors

• Zittel Douglas P
• Sebion Michael J
• Anderson Richard D
• Linder Peter L
• Pellin Christopher J
• Weinberger Mark T
• Richter Mark C

Classifications

• B01F13/002

  Operations & Transport · mapped topic

• B01F5/0256 Primary

  Operations & Transport · mapped topic

• B05B7/0815

  with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter · CPC title

• B05B15/025

  Operations & Transport · mapped topic

• B05B7/1272

  actuated by gas involved in spraying, i.e. exiting the nozzle, e.g. as a spraying or jet shaping gas · CPC title