Patent ID: 8726831

Claim:
A powder coating material spray gun, comprising: a barrel, a nozzle mounted to the front end of the barrel, a handle that is manually gripped by an operator during a coating operation, the top of said handle being connected to the rear end of said barrel, a base member connected to the bottom of said handle, a coating material inlet tube that extends through said handle and is connected to said base member of said handle, a hose connector, said coating material inlet tube being connected to a top end of said hose connector, a bottom end of said hose connector being connectable to a first end of a coating material supply hose wherein an annular space is provided between said hose connector and said coating material inlet tube, said first end of said supply hose being below said handle, a purge air inlet provided in said base member, said purge air inlet being connected by one or more passages in said coating material inlet tube to said annular space provided between said hose connector and said coating material inlet tube, a coating material flow path extending from said base member of said handle up through said handle and along said barrel to said nozzle, said coating material inlet tube providing a portion of said coating material flow path, wherein purge air passes through said purge air inlet and then through said one or more passages in said coating material inlet tube to said annular space between said hose connector and said coating material inlet tube to purge said coating material flow path.