Patent ID: 9027858
Filing Date: 2015-05-12
Classification: B05B,B29B,G01P

Abstract:
1. A spray gun for spraying a coating composition having a first component and a second component, said spray gun comprising: (A) a spray gun body comprising a carrier inlet, a first inlet connected to a first connection path; (B) a tubular nozzle casing having a nozzle, said tubular nozzle casing being housed within said spray gun body; (C) a hollow spray needle having a longitudinal channel therein, a channel opening at one end of said hollow spray needle, and a second inlet at the other end of said hollow spray needle distal to said channel opening, wherein said hollow spray needle is partially positioned and is slidable in said tubular nozzle casing between a spray position and a closed position; (D) an inlet valve for controlling said second inlet; and (E) a detachable coupling assembly affixed externally to said spray gun body distal to said nozzle; wherein said second inlet, said inlet valve and said detachable coupling assembly are configured so that said second inlet is open at said spray position and is closed at said closed position; wherein: said first component and said second component are maintained separated in said spray gun such that said first component and said second component remain separated until sprayed out of said nozzle; said first inlet is configured to receive said first component by gravity and connected to said first connection path that is further connected to a spray passage defined by said tubular nozzle casing and said hollow spray needle for conveying said first component to said nozzle; and said second inlet is configured to receive said second component by gravity and connected to said longitudinal channel for conveying said second component to said nozzle when said hollow spray needle is at said spray position.