초록 ▼

A pesticide spraying unit is pressurized with compressed air through an air filler one way check valve of the type having a non-puncturing depressible stem. The check valve is preferably affixed to an adapter which can be inserted between the cap and tank of the spraying unit. A pressure relief valv

A pesticide spraying unit is pressurized with compressed air through an air filler one way check valve of the type having a non-puncturing depressible stem. The check valve is preferably affixed to an adapter which can be inserted between the cap and tank of the spraying unit. A pressure relief valve and a pressure gauge may also be affixed to the adapter. Optionally, a puncturing type of gas cartridge charging device may be affixed to the adapter. The spray unit includes a manual pump, and the air filler check valve and the gas cartridge charging device provide alternatives for charging the tank of the spray unit with compressed gas.

대표청구항 ▼

A tank pressurizing adapter in combination with a spray unit including: a tank for containing fluid to be sprayed, said tank having a threaded top; a manually actuated pump for the tank having a threaded cap and an actuator and piston and cylinder assembly for pressurizing fluid in the tank, said ac

A tank pressurizing adapter in combination with a spray unit including: a tank for containing fluid to be sprayed, said tank having a threaded top; a manually actuated pump for the tank having a threaded cap and an actuator and piston and cylinder assembly for pressurizing fluid in the tank, said actuator projecting above said cap and reciprocating in operation to operate said pump to pressurize air in the tank; and a spray nozzle assembly communicating with said tank for spraying pressurized fluid from said tank; said adapter providing an alternative means for pressurizing fluid in said tank and comprising: an adapter cylinder having a threaded bottom screwed on to said threaded top of said tank and a threaded top screwed on to said threaded cap so as to position said adapter cylinder between said tank and said cap in communication with said tank; said piston and cylinder assembly extending downward from said cap inside said adapter cylinder and spaced radially from the interior thereof; and air filler check valve means affixed to the outside oF said adapter cylinder and communicating with the interior space thereof outside said piston and cylinder assembly for introducing pressurized air into said adapter cylinder and said tank, thus providing an alternative to said pump for pressurizing said tank; said air filler check valve means including a nonpuncturing depressible stem for opening said valve means to admit pressurized air.