Spray gun assembly with an air-operated paint agitation including a metal bellows

摘要

A hand-held spray gun assembly (10) for spraying paints and other suspensions has a container (12) with a cover (14) sealingly covering the container (12). A motor (70) is attached to the cover (14) and has a piston rod (48) that reciprocates inside a piston assembly (68). A metal bellows (56) has a first end (62) coupled to the piston assembly (68) to form a seal. A shaft assembly (40) has a first end (46) extending through the metal bellows (56) and attached to the piston rod (68). The shaft assembly (40) has a circular flange (52) coupled to a second end (58) of the metal bellows (56) to form a second seal. A second end (39) of the shaft assembly (40) is attached to the paddle (38).