초록 ▼

An airless spray gun having a gun body and in the gun body a first internal passageway for fluid under pressure to flow to a discharge nozzle, a valve in this passageway for adjusting the flow rate of the fluid and a valve stem for actuating the valve, where the valve stem extends through a second i

An airless spray gun having a gun body and in the gun body a first internal passageway for fluid under pressure to flow to a discharge nozzle, a valve in this passageway for adjusting the flow rate of the fluid and a valve stem for actuating the valve, where the valve stem extends through a second internal passageway, the gun further including a spring biasing the valve stem in a downstream direction to close the valve and a trigger for moving the valve stem in the upstream direction to open the valve, the first passageway intersecting the second passageway downstream of the spring and upstream of the valve.

대표청구항 ▼

[ What is claimed is:] [5.]5. An airless spray gun comprising a gun body which includes a first inlet for receiving fluid under pressure, an outlet for discharge of said fluid, a first internal passage communicating said first inlet with said outlet, and a second inlet and a second internal passage

[ What is claimed is:] [5.]5. An airless spray gun comprising a gun body which includes a first inlet for receiving fluid under pressure, an outlet for discharge of said fluid, a first internal passage communicating said first inlet with said outlet, and a second inlet and a second internal passage extending from said second inlet to said outlet, said spray gun further comprising a valve upstream of said outlet to control flow of said fluid to said outlet, a valve stem for actuating said valve, and a valve stem mounting assembly comprising a housing inserted via said second inlet into said second internal passage and releasably secured therein, said housing having a bore, said valve stem having a tail part, a lead part downstream of said tail part and a spring-engaging part between said tail and lead parts, at least portions of said tail and said lead parts of said valve stem situated in said bore of said housing, a coil spring surrounding a portion of said tail part in said bore of said housing, said coil spring having a tail part coupled to said housing and a lead part coupled to said spring-engaging part of said valve stem for urging same in the downstream direction for biasing said valve to a closed state, an actuator mounted on said housing and coupled to said tail part of said valve stem for moving same in the upstream direction to selectively open said valve, an annular seal slidably mounted on said lead part of said valve stem downstream of said spring-engaging part and establishing a seal between said lead part of said valve stem and said spring wherein length of the valve stem downstream of said annular seal is less than the length of the valve stem upstream of said annular seal, said first internal passage communicating with said second internal passage only downstream of said seal and upstream of said valve.