초록 ▼

A pneumatically operated spray gun for dispensing fluid materials, and having a disposable supply hose for eliminating dean up problems common when using more expensive hoses and fittings. As a result, the spray gun is easy to dean and maintain since no spray material is introduced through internal

A pneumatically operated spray gun for dispensing fluid materials, and having a disposable supply hose for eliminating dean up problems common when using more expensive hoses and fittings. As a result, the spray gun is easy to dean and maintain since no spray material is introduced through internal parts of the spray gun. such as valves, passages, and inlet and outlet ports. The spray gun includes a gun housing having an air inlet port, an air outlet port, and a spring biased air valve disposed between the inlet and the outlet ports. The air valve is biased in a closed position. A trigger is pivotally attached to the gun housing and engages the air valve. The trigger is also attached to one end of a spring biased pinch valve mounted in the housing. Another end of the pinch valve is biased against one end of a material disposable supply hose for pinching off the supply of material therethrough. An end of the disposable supply hose is attached to the housing and disposed adjacent an end of the air outlet port. When the trigger is squeezed the air valve is moved to an open position allowing pressurized air to flow from the air inlet port to the air outlet port. Simultaneously, the trigger moves the pinch valve releasing it from the side of the disposable supply hose, thereby allowing material to flow through the hose and engage an air stream emitted from the end of the air outlet port.

대표청구항 ▼

A pneumatically operated, easily cleaned spray device for spraying fluid materials, said spray device being connected to a pressurized gas source and being connected to a source of material to be sprayed, said spray device including a housing having a gas inlet port for receiving pressurized gas and

A pneumatically operated, easily cleaned spray device for spraying fluid materials, said spray device being connected to a pressurized gas source and being connected to a source of material to be sprayed, said spray device including a housing having a gas inlet port for receiving pressurized gas and a coupled gas outlet port for passing the pressurized gas externally outwardly from said housing, and actuating means operatively attached to the device housing, wherein the improvement includes, in combination: fluid outlet means carried by said device and locked external to said housing and downstream from said gas outlet port in a manner such that pressurized gas passing outwardly from said gas outlet port intersects with any fluid which is released from said external fluid outlet means to produce an external spray; and means carried by said device, and external to said housing, for removably receiving and connecting a removable fluid supply line which is to be connected to an external supply of fluid to said fluid outlet means, said actuating means setting to selectively open and close such a fluid supply line.