Abstract: The present invention is directed to an adjustable pressure injection device system for delivering an agent into a tree, comprising at least two fill bottles for containing the agent; a cap attached to the open end of the bottles, the cap comprising at least two ports and an on/off valve; a main line connected to the cap through a port, wherein the agent flows out of the bottle and into the main line; a parallel distribution system (PDS) connected to the main line, wherein the PDS comprises multiple ports, each port either being closed or connected to an injection line, and further wherein the PDS is optionally expandable by combining a PDS with additional PDS units; at least 2 injection lines connected to the PDS through the PDS ports, and an injection needle attached to each injection line, wherein the agent flows through the injection needle into the tree.

Abstract: An improved media blasting system that separates the fluid velocity development, the introduction of media and the acceleration of media from each other. The preferred arrangement has a supersonic nozzle that produces supersonic velocity air discharged into a coupled acceleration chamber. No shot travels within the supersonic nozzle, so no wear of the supersonic nozzle interior occurs, thus making the nozzle shorter, of plain metal alloys, less expensive to manufacture and lasting indefinitely. The shot is separately introduced into the acceleration chamber thus avoiding it's otherwise limitation to the air mass flow rate in the air supply hose or pipe. Thus the average velocity used to transfer momentum to the shot is much higher than the lower average velocity currently available within other blasting nozzles, which occurs from throat to exit.

Abstract: The invention provides a hand-held electronic device for injecting an agent into a tree with continuous pressure sensing technology for real-time measurements of the pressure within the tree. The pressure measurement information is conveyed to an onboard central processing unit for data collection, analysis and optimization of the speed of injecting the agent into the tree. By continually monitoring the pressure and injection power, the injection pressure can be modified to adapt to back pressure fluctuations. In one embodiment of the invention the agent is injected into the tree under a preprogrammed pressure profile. In another embodiment of the invention the agent is injected into the tree under a variable pressure profile until the fastest injection time is obtained.