Patent ID: 6450422
Filing Date: 2002-09-17
Classification: B05B

Abstract:
A spray gun adapted for applying a texturized coating comprising:a housing having an upper portion terminating at a forward end in a mounting block member and a lower portion forming a pistol grip, the upper portion defining a longitudinal bore therethrough, the lower portion defining a carrier fluid passageway intersecting the longitudinal bore at its upper end and terminating in a carrier fluid inlet port at its lower end; a carrier fluid delivery tube positioned within the longitudinal bore of the housing, the delivery tube having a distal end extending beyond the end of the mounting block member and having an inlet adjacent its proximal end in fluid communication with the carrier fluid passageway in the house lower portion and an outlet orifice at is distal end; a coating material/carrier fluid interface member having a central section defining an axial bore which forms an aspiration chamber at the forward end thereof and a material inlet nipple extending outwardly from the central section and defining a coating material inlet chamber in fluid communication with the aspiration chamber, the interface member being rotatably mounted on the mounting block member with the axial bore aligned with the longitudinal bore in the housing, the distal end of the delivery tube extending into the axial bore with the outlet orifice disposed adjacent the forward end thereof; a nozzle secured to the forward end of the interface member whereby carrier fluid exiting the outlet orifice entrains texture material in a spray pattern; and cooperating means disposed on the rearward end of the interface member and the forward end of the mounting block member to limit the rotational movement of the interface member relative to the mounting block member to an arc of about 180Â°, The cooperating means comprising a protruding pin and a cooperating groove with the pin located on one of the mounting block and interface members and the groove located on the other member.