Sprayer for liquids with precompression chamber
AssigneeSilgan Dispensing Systems Vicenza, S.R.L.
InventorGilberto Rech
Life of this patent
Estimating the term…
Abstract
A sprayer of liquids with trigger-operated pump includes a body which can be attached to the mouth of a container and a nozzle for delivery of the liquid. In the body is formed a pumping chamber in communication with the interior of the container and with the delivery nozzle. A one-way valve of suction and of delivery is located in the outlet duct of the liquid a system of precompression comprising a piston pushed with constant force by a spring in occlusion of the outlet duct such as to increase the pressure of the liquid in the outlet duct during the pumping, and also thereby increase the speed or the acceleration of the liquid in output from the nozzle.
Claims20
A trigger sprayer, comprising:
- a body, comprising:
- a base;
- a delivery nozzle;
- a pumping chamber;
- an inlet hole in communication with the pumping chamber;
- an outlet hole in communication with the pumping chamber;
- an outlet duct, comprising:
- a first vertical section in communication with the outlet hole;
- a second vertical section in communication with the first vertical section;
- and
- a horizontal section in communication with the delivery nozzle;
- wherein the first vertical section is disposed below the second vertical section, and the first vertical section has a smaller diameter than the diameter of the second vertical section;
- a plunger positioned in the pumping chamber;
- a trigger lever hinged to the body and to the plunger;
- a precompression system seated in the outlet duct, the precompression system comprising:
- a piston housed in the second vertical section;
- and
- a spring holding the piston in the second vertical section,
- wherein, the piston of the system of precompression is configured and arranged to permit a fluid to pass around an exterior surface of the piston upon actuation of the trigger sprayer.
A sprayer, comprising:
- a body, comprising:
- a base;
- a delivery nozzle;
- a pumping chamber;
- an inlet hole in communication with the pumping chamber;
- an outlet hole in communication with the pumping chamber;
- an outlet duct, comprising:
- a first vertical section in communication with the outlet hole;
- a second vertical section in communication with the first vertical section;
- and
- a horizontal section in communication with the delivery nozzle;
- wherein the first vertical section is disposed below the second vertical section, and the first vertical section has a smaller diameter than the diameter of the second vertical section;
- a plunger positioned in the pumping chamber;
- a precompression system seated in the outlet duct, the precompression system comprising:
- a piston housed in the second vertical section;
- and
- a spring holding the piston in the second vertical section,
- wherein, the piston of the system of precompression is configured and arranged to permit a fluid to pass around an exterior surface of the piston upon actuation of the trigger sprayer.
Dependencies are inferred from the claim text.