Patent ID: 8807462
Filing Date: 2014-08-19
Classification: B05B

Abstract:
1. A plural component air purge spray gun having fluid ports, the plural component air purge spray gun comprising: a pneumatic piston positioned to selectively cover said fluid ports and moveable between a closed position preventing flow through said ports, a partially open position allowing a limited amount of flow through said ports and a fully open position allowing full flow through said ports; a mechanical stop plunger selectively positionable to limit travel of said piston to one of said positions; a stop bar configured to rest within and movable between variable depth notches to position said mechanical stop plunger according to said positions, each of said variable depth notches corresponding to one of said closed position, said partially open position, and said fully open position; and an operator positionable knob connected to said stop bar to selectively position said stop bar according to said positions.