Patent ID: 7753059

Claim:
A fluid ejection gun for ejecting a fluid in an ejection direction, the fluid ejection gun comprising: a flexible ejection tube for ejecting the fluid, the fluid being supplied to the inside of the ejection tube, the fluid being ejected from the tip of the ejection tube; a guide disposed to surround the ejection tube and introduce the ejection tube along the inner surface of the guide, the ejection tube being moved by the fluid ejected from the tip of the ejection tube; a casing disposed to surround the guide, the casing having an opening section forward in the ejection direction of the fluid ejected from the tip of the ejection tube; and a suction unit provided to the casing for sucking the fluid ejected from the ejection tube; wherein the suction unit comprises an exhaust tube communicating to the casing, the exhaust tube extending from the casing and bending to extend backward relative to the ejection direction.