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Power paint sprayer includes a power handle assembly and a separately detachable pump and container assembly. The pump housing has a bail pivotally connected to opposite sides thereof for pivotal movement into and out of locking engagement with a detent on the top of the power handle assembly to det

Power paint sprayer includes a power handle assembly and a separately detachable pump and container assembly. The pump housing has a bail pivotally connected to opposite sides thereof for pivotal movement into and out of locking engagement with a detent on the top of the power handle assembly to detachably hold the pump housing up against the bottom of the power handle assembly. The pump housing may be cast in one piece and has a longitudinal bore extending therethrough in which a pump cylinder is permanently affixed using a suitable adhesive/sealant. The pump piston is driven by an oscillating armature whose movements are limited by a stroke limiting screw thus to limit the stroke of the pump piston. The stroke limiting screw threadedly engages a split nut held together by a pair of O-rings that apply a friction load on the stroke limiting screw to prevent creep thereof due to vibrations and the like. A slot may be provided in the bottom wall of the motor housing adjacent the back edge of the pump housing to prevent any liquid leakage from the pump from flowing down into the sprayer handle. Also, a safety guard having finger grips on opposite sides thereof may be attached to a nozzle nut threadedly connected to the outer end of the pump barrel to facilitate unscrewing of the nozzle nut by hand.

대표청구항 ▼

Sprayer apparatus comprising a pump and container assembly including a pump housing containing a liquid pump and a container for the liquid to be sprayed suspended from said pump housing, a separate power handle assembly including a motor housing containing motor means for driving said pump, said pu

Sprayer apparatus comprising a pump and container assembly including a pump housing containing a liquid pump and a container for the liquid to be sprayed suspended from said pump housing, a separate power handle assembly including a motor housing containing motor means for driving said pump, said pump housing and said power handle assembly having oppositely facing locating surfaces, and mounting means for detachably mounting said pump housing to said motor housing, said mounting means including a bottom recess in said motor housing for receipt of said pump housing, a flange on said pump housing and a notch in said motor housing, said flange and notch being formed to permit said flange to be inserted into said notch with said locating surfaces initially at an angle to each other and thereafter to be pivoted so as to bring said locating surfaces into abutting engagement, and a bail pivotally connected to said pump housing for pivotal movement into locking engagement with a bail retention surface on said power handle assembly thereby to hold said locating surfaces in engagement with each other to limit relative vertical movement between said pump housing and said power handle assembly. Sprayer apparatus comprising a pump and container assembly including a pump housing containing a liquid pump and a container for the liquid to be sprayed suspended from said pump housing, and a power handle assembly including a motor housing containing motor means for driving said pump, said motor means including an electromagnet and associated armature that reciprocates when an alternating current is applied to said electromagnet, and said pump including an axially movable pump piston, and spring means for biasing said pump piston into engagement with one side of said armature, and said power handle assembly including a stroke limiting screw movable toward and away from the opposite side of said armature for limiting the movement of said armature in a direction away from said pump piston, and split nut means biased into frictional engagement with opposite sides of said stroke limiting screw for applying a friction load to said stroke limiting screw preventing creep of said stroke limiting screw due to vibrations and the like.