Portable pressurized sprayer

摘要

A tank holding a quantity of liquid releasably connects to an electric pump module through a connector to provide a portable sprayer. The tank connects to a feed line that supplies spray nozzle with the liquid. The connector combines a quick disconnect connector with a pressure relief valve. The electric pump module includes an electric pump, a switch assembly, and a check valve. The electric pump module directs gas through the check valve into the connector to increase the gas pressure in the tank and force the liquid in the tank to flow through the feed line and out the spray nozzle. The switch assembly turns off the electric pump when the gas pressure in the tank exceeds a predetermined limit while maintaining the flow of liquid through the spray nozzle.

主权项

1. A portable, hand held pressurized sprayer comprising:
a tank configured to hold a quantity of liquid and including:
a tank connector integrally connected to an exterior of a side of the tank, said tank connector having at least one plunger mechanism,a spray nozzle,a feed line connecting said spray nozzle to said tank,an opening to facilitate connection of said feed line to said tank, anda hand pump for manually supplying a flow of said liquid from the tank, said hand pump connected to a top surface of the tank; an electric pump module comprising an integrally connected pump connector, said pump connector having at least one key that is received by at least one slot of the tank connector on said tank, wherein said electric pump module is quickly and releasably connected to the tank by inserting said pump connector into said tank connector and then rotating said pump connector from an unlocked position into a locked position, and said electric pump module is quickly and releasably disconnected from the tank by rotating said pump connector from said tank connector from said locked position to said unlocked position and then removing said electric pump module, said electric pump module having an electric pump, a switch assembly, and a check valve; and a locking mechanism to limit rotation of said electric pump module on said tank, wherein said hand pump supplies the flow of said liquid from said tank when said electric pump module is disconnected from said tank, wherein said electric pump module directs a gas through said check valve into said tank connector to increase a gas pressure in said tank and force the liquid in said tank to flow through the feed line and out the spray nozzle, wherein said tank connector transports said gas into and out of said tank and enables said tank to remain pressurized after said electric pump module is disconnected from said tank connector, and wherein said switch assembly automatically turns off said electric pump when the gas pressure in said tank exceeds a predetermined limit while maintaining the flow of said liquid through the spray nozzle.