Patent ID: 8677683

Claim:
In combination: an injector for injecting liquid chemicals directly into the trunk of a tree; said injector having forward and rearward ends; said injector having a quick coupler at its forward end which has a first liquid passageway formed therein; said injector having a second liquid passageway formed therein which communicates with said first liquid passageway and which extends therefrom; said second liquid passageway being in communication with the liquid chemical to be injected into the tree; an injection tip including a body portion having forward and rearward ends; said rearward end of said body portion of said injection tip being adapted to be received by said quick coupler of said injector; said body portion of said injection tip having a third liquid passageway formed therein extending therethrough which has forward and rearward ends; a normally closed, spring loaded valve assembly selectively removably secured in said rearward end of said third liquid passageway; said valve assembly including a valve seat, having a rearward liquid intake side and a forward liquid discharge side, a movable valve member positioned forwardly of said valve seat which is movable between open and closed positions with respect to said liquid discharge side of said valve seat, a spring associated with said valve member which yieldably maintains said valve member in its said closed position, and an elongated valve actuator having forward and rearward ends; said forward end of said valve actuator being operatively secured to said valve member; said valve actuator extending rearwardly from said valve member; said rearward end of said valve actuator being positioned rearwardly of said rearward end of said body portion of said injection tip so that said valve actuator may be manually moved forwardly to move said valve member to its said open position; said valve member being in said open position when said injection tip is coupled to said injection device; and an injection needle having forward and rearward ends; said rearward end of said injection needle being secured to said forward end of said body portion of said injection tip; said injection needle having a fourth liquid passageway formed therein with forward and rearward ends; said rearward end of said fourth liquid passageway in said injection needle being in communication with said forward end of said third liquid passageway of said body portion of said injection tip; said injection needle having a wedge shape at its forward end; said injection needle having a liquid discharge opening formed therein adjacent its said forward end which is in communication with said fourth liquid passageway in said injection needle.