Non-aerosol liquid spray device with continuous spray

摘要

Aerosol-free spray devices are provided. According to some embodiments, a spray device includes a piston operable within a piston chamber and coupled to a vacuum plunger operable within a vacuum chamber. A charger is operable to move the piston and the vacuum plunger in a first direction to generate a vacuum in the piston chamber and the vacuum chamber, thereby drawing liquid into the piston chamber. The vacuum in the vacuum chamber acts on the piston to pressurize the liquid in the piston chamber. A spray actuator is operable to open a spray valve, thereby causing the vacuum in the vacuum chamber to force the plunger and the piston to move opposite the first direction, and forcing the liquid in the piston chamber through a spray nozzle as a liquid spray. According to other embodiments, a spring replaces the vacuum chamber and vacuum plunger.

主权项

1. A spray device comprising:
a body defining a reservoir for holding content; a first chamber in selective communication with the reservoir; a piston slidably positioned in the first chamber; a first valve configured to control flow of the content from the reservoir into the first chamber; a second chamber; a vacuum plunger slidably positioned in the second chamber; a charger connected to the piston and the vacuum plunger and operable to displace the piston and the plunger to create a vacuum in the second chamber that imposes a force on the vacuum plunger and the piston, thereby pressurizing a quantity of the content in the first chamber; a spray nozzle in selective communication with the first chamber; a second valve configured to control flow of the quantity of the content in the first chamber out of the first chamber to the nozzle; and a spray actuator operable to generate a spray of the content from the nozzle by opening the second valve.