A powder dispensing device including an inlet, a flow portion for providing a tortuous path and powder anti-back flow, wherein the powder dispensing device does not require restrictive filters, a powder container having concentric ribs and vortex generating vanes to provide vortex generation or agitation for the powder, a cap, and an outlet.

A spreading device, a powder-like mixture composition and a method tor spreading the composition for control or prevent forest pathogens on tree stumps are disclosed.

A silica agent applicator includes a reservoir for containing a silica agent. A hollow, deformable bulb is adapted to be squeezed to force air through a first air tube fluidly connecting the bulb and a bottom of the reservoir. A second tube extends from a top of the reservoir to an exit of the applicator, to convey aerosolized silica agent out of the applicator for application onto a surface or an insect.

An agricultural spreader includes at least one delivery conduit that carries material to be spread from a bin to an exit end of the delivery conduit under the influence of air blown through the delivery conduit by a fan. A deflector is mounted proximate the exit end of the delivery pipe and deflects the material onto agricultural field in a dispersal area. A radio frequency (RF) transmitter is disposed to generate an RF signal that passes through the dispersal area. The RF signal is detectably changed when interacting with the material passing through the dispersal area. An RF receiver is disposed to receive the RF signal after the RF signal passes through the dispersal area and provides an output indicative of the RF signal. A controller is coupled to RF receiver and detects plugging of the delivery conduit based on the output of the RF receiver.

The present invention is directed to a compact robotic device for spraying a biocide powder or liquid to a predetermined area for controlling the infestation by cockroaches and fleas. The compact robotic device comprises a robotic body that can autonomously travel to spray the powder or liquid. The compact robotic device comprises a cartridge containing the biocide powder, a spray head in fluid communication with the cartridge and configured to spray the powder or liquid over a surface and a pump coupled to the cartridge for affecting the flow of powder or liquid from the cartridge to the spray head.

A spreading device, a powder-like mixture composition and a method for spreading the composition for control or prevent forest pathogens on tree stumps are disclosed.

A powder dispensing device including an inlet, a flow portion for providing a tortuous path and powder anti-back flow, wherein the powder dispensing device does not require restrictive filters, a powder container having concentric ribs and vortex generating vanes to provide vortex generation or agitation for the powder, a cap, and an outlet.

The present invention is directed to a compact robotic device for spraying a biocide powder or liquid to a predetermined area for controlling the infestation by cockroaches and fleas. The compact robotic device comprises a robotic body that can autonomously travel to spray the powder or liquid. The compact robotic device comprises a cartridge containing the biocide powder, a spray head in fluid communication with the cartridge and configured to spray the powder or liquid over a surface and a pump coupled to the cartridge for affecting the flow of powder or liquid from the cartridge to the spray head.

A method and apparatus for distributing beneficial arthropods to plants. The method and apparatus include a temperature control system for maintaining the beneficial arthropods at an optimal temperature prior to dispersal and a pneumatic system for conveying the beneficial arthropods.

A method of spraying multiple fluids from an agricultural machine includes supplying a first working fluid from a first source to a first spray nozzle, and supplying a second working fluid from a second source to the first spray nozzle. The method also includes operating at least one valve in the first spray nozzle to control flow of the first working fluid from the first source to one or more outlets of the first spray nozzle, and operating the at least one valve in the first spray nozzle to control flow of the second working fluid from the second source to the one or more outlets of the first spray nozzle. The method further includes selectively spraying the first working fluid through the one or more outlets of the first spray nozzle, and selectively spraying the second working fluid through the one or more outlets of the first spray nozzle.