Aerosol spray gun

An aerosol spray gun having a handle held by an operator, a barrel extending forward from the handle, and a trigger manipulated by the operator to regulate a volume of paint to spray, including

• an internal air duct created in the barrel and extending along the barrel for supplying pressurized air to an outlet through which air is jetted to hit and atomize paint ejected out of the tip of the barrel, and for supplying pressurized air to an outlet through which patterning air is jetted to hit and shape a paint spray stream developed by the atomizing air,
• a throttle valve mechanism provided in the internal air duct and having a movable valve shaft which is urged by spring to close the valve and is configured to extend through the inside of the internal air duct and protrude from a rear end of the barrel, and
• an elongated hole receiving a coupling pin operative between the coupling link and the trigger and/or a coupling pin operative between the coupling link and the movable valve shaft, and extending along an extension of the coupling link,
• the elongated hole is dimensioned to disconnect the trigger from the movable valve shaft without cooperative relation between them from an initial stage where an operator begins to squeeze the trigger to an intermediate stage before the operator fully squeezes the trigger.