| 主权项 |
1. A sprayer, comprising:
a container of liquid; a body provided with a base that can be applied to the mouth of the container of liquid and a delivery nozzle from which the liquid is sprayed, a pumping chamber in the body and in communication with the interior of the container through an inlet hole and a dipper tube and with said delivery nozzle through an outlet hole and an outlet duct having a first section in communication with said outlet hole of the pumping chamber and a second section in communication with said delivery nozzle and positioned at an angle with respect to said first section; a trigger lever hinged to the body and to the stem of a plunger movable in the pumping chamber; a one-way suction and delivery valve co-operating with said inlet hole and said outlet hole to control, following actuation of said trigger lever, the suction of the liquid from the container and the delivery of the liquid towards the delivery nozzle: a system of precompression seated in said outlet duct, suitable for increasing the speed or the acceleration of the liquid in output from said nozzle, the system of precompression comprising a piston housed in a seat formed in a widening and extension of said first section of the outlet duct and normally held in occlusion of said first section by a spring, the force of which is overcome by the pressure of the fluid acting on the base of the piston via said first section following the actuation of the pump with consequent displacement of the piston and exiting of the fluid via said second section of the outlet duct. |
