Abstract: The trigger operated pumping mechanism for a fluid dispensing device comprises a body extending rearwardly from a discharge end of the fluid dispensing device toward a hand gripping formation of the fluid dispensing device. The body has a hollow cylinder therein extending to a rear wall. A piston is received in the cylinder. A trigger is movably mounted to the body, has a front side and a back side, and is coupled to the piston. A biasing mechanism for biasing the trigger away from the body to bias the piston coupled to the trigger out of the cylinder is positioned between the body and the trigger. The biasing mechanism includes non-metal, non-coiled, elongate spring structure having opposite ends, extending rearwardly from the trigger toward the hand gripping formation, having one end positioned adjacent to and acting against the trigger and having another end positioned rearwardly of the trigger adjacent the body at a location which is closer to the rear wall of the cylinder than to the trigger.
Type:
Grant
Filed:
July 14, 1993
Date of Patent:
August 30, 1994
Assignee:
AFA Products
Inventors:
Wilhelmus J. J. Maas, Petrus L. W. Hurkmans
Abstract: An improved miniature watering unit is disclosed, which has a cylindrical body attached to a source of pressurized water, having one or more water discharge openings and a rotatable cap. As the cap is rotated, a stem is raised or lowered to form an arcuate orifice of variable circumferential width between the stem and the interior of the body. The adjustment in width of the orifice in turn adjusts the rate of water from the discharge openings.