Trigger actuated air pressure dispensing gun

Air compression means to apply air under pressure from a source thereof to a container of flowable material which container has a nozzle through which said material may be discharged, comprising

• a valve assembly with an inlet port connectable to an air source, said valve assembly incorporating a three-way valve, an actuator extending from said three-way valve for controlling the flow of air passing therethrough;
• a spring-biased pivoted lever for biasing said actuator to a normal position;
• a gun unit including a handle, trigger means including a trigger arm pivoted in said handle;
• a flexible tension control cable connecting said trigger arm and said pivoted lever for activating said actuator away from the normal position and into the actuated position when tension is applied to the said control cable;
• a holder fixed to the upper part of said handle;
• holding means for a said container adjustably and slidably mounted on said holder;
• a coupler on said holding means communicating with said container in the installed position of the container;
• a flexible air line connecting said three-way valve to said coupler;
• such that
• the gun unit may be held in a hand of the user and controlled by pressure of a finger of said hand against said trigger means and with the valve assembly mounted at a remote location from the gun, in which
• said three-way valve in the normal biased condition blocks the inlet port and connects the flexible air line to an exhaust outlet of the valve that leads to ambient air outside the valve under atmospheric pressure, and in which said three-way valve in the actuated condition blocks the said exhaust outlet and connects the inlet port to the flexible air line.