| 主权项 |
1. In combination:
an airless paint spray gun including a gun housing with an internally threaded discharge opening; a first thread base having rearward and forward ends; said first thread base having an externally threaded rearward end which is threadably secured to said internally threaded discharge opening of said gun housing; said first thread base having external threads at said forward end thereof; said first thread base having a bore extending between said rearward and forward ends thereof; a mounting nut having rearward and forward ends; said forward end of said mounting nut having a forwardly extending reduced diameter portion; said mounting nut having a bore extending between said rearward and forward ends; said rearward end of said mounting nut being threadably secured to said forward end of said first thread base; said mounting nut having a flat annular surface at said forward end thereof; said flat annular surface of said mounting nut having first, second, third and fourth indentations formed therein which are radially spaced-apart 90° from one another; an elongated central shaft including a tubular body portion having rearward and forward ends with a bore extending between said rearward and forward ends thereof; said rearward end of said tubular body portion of said central shaft having external threads; said central shaft having an annular shoulder extending transversely outwardly from said tubular body portion intermediate said rearward and forward ends thereof to define a first bearing surface at the outer end thereof; said rearward end of said tubular body portion being threadably secured to said forward end of said mounting nut; a central body having rearward and forward ends; said central body including a hub portion, with rearward and forward ends, and an actuator ring extending transversely outwardly from said hub portion; a disc-like detent spring having a rearward side, a forward side, and a central opening; said detent spring being rotatably mounted on said tubular body portion of said central shaft rearwardly of said annular shoulder of said central shaft; said detent spring having first and second spring arms having free ends which protrude rearwardly of said rearward side of said detent spring; each of said free ends of said first and second spring arms having a protrusion thereon which is adapted to be yieldably received by one of said indentations in said flat annular surface of said mounting nut; said detent spring being positioned in said hub portion of said central body at the rearward end thereof for rotation with said central body; said rearward end of said hub portion of said central body being rotatably mounted on said reduced diameter portion of said mounting nut; said central body having a second bearing surface inwardly of said forward end thereof which receives said first bearing surface of said center shaft; said hub portion of said central body having internal threads at said forward end thereof; a second thread base having rearward and forward ends; said second thread base having a bore extending therethrough; the rearward end of said base of said second thread base receiving said forward end of said central shaft; said rearward end of said second thread base being threadably secured to said internal threads at said forward end of said hub portion of said central body for rotation therewith; a tip guard assembly having rearward and forward ends; said tip guard assembly including a base having rearward and forward ends; said base having a central axial opening; a pair of diverging tip guard members extending forwardly from said base; said tip guard assembly including a retaining nut rotatably secured to said rearward end of said base; said retaining nut being threadably secured to said externally threaded forward end of said second thread base; said base and said diverging tip guard members being fixed against rotation with respect to said second thread base when said retaining nut is tightened onto said second thread base; said base and said diverging tip guard members being rotatable with said second thread base when said actuator ring is rotated under said retaining nut and has been threadably tightened onto said second thread base; said tip guard assembly including a spray tip which sprays paint therefrom in a generally fan shape generally transverse to said diverging tip guard members; said base and said diverging tip guard members being selectively rotatable in 90° increments by the selective rotation of said actuator ring, said central body and said detent spring without said retaining nut being loosened with respect to said second thread base. |
