Patents by Inventor Davey Mitchell

Davey Mitchell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Spraying apparatus for applying friction modifying material to railroad rail
    Patent number: 12060089
    Abstract: A spraying apparatus for applying a friction modifying fluid to a railroad rail, comprising: a nozzle body disposed in a housing; a fluid inlet conduit in fluid communication with an opening in housing; a fluid inlet disposed in the housing in fluid communication with a first fluid conduit defined by or disposed in the nozzle body; wherein the first fluid conduit runs from fluid inlet to a hollow nozzle tip body disposed on and protruding through a bottom of housing and wherein fluid inlet is also disposed below, and in fluid communication with, the fluid inlet conduit; a control fluid supply line and an atomizing fluid supply line each partially disposed in the housing and each having respective portions external of the housing for connecting with the same fluid supply or respective fluid supplies; wherein the control fluid supply line injects a pressurized control fluid against a piston assembly disposed in a piston cavity; wherein the piston assembly carries stopper needle which is biased towards hollow no
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: August 13, 2024
    Assignee: L. B. Foster Company
    Inventors: Davey Mitchell, David Elvidge, Darren Loo, Doug McKay, Joel Vandermarel, Nigel Davis, Sze Kei Luk
  • SPRAYING APPARATUS FOR APPLYING FRICTION MODIFYING MATERIAL TO RAILROAD RAIL
    Publication number: 20210253140
    Abstract: A spraying apparatus for applying a friction modifying fluid to a railroad rail, comprising: a nozzle body disposed in a housing; a fluid inlet conduit in fluid communication with an opening in housing; a fluid inlet disposed in the housing in fluid communication with a first fluid conduit defined by or disposed in the nozzle body; wherein the first fluid conduit runs from fluid inlet to a hollow nozzle tip body disposed on and protruding through a bottom of housing and wherein fluid inlet is also disposed below, and in fluid communication with, the fluid inlet conduit; a control fluid supply line and an atomizing fluid supply line each partially disposed in the housing and each having respective portions external of the housing for connecting with the same fluid supply or respective fluid supplies; wherein the control fluid supply line injects a pressurized control fluid against a piston assembly disposed in a piston cavity; wherein the piston assembly carries stopper needle which is biased towards hollow no
    Type: Application
    Filed: December 23, 2020
    Publication date: August 19, 2021
    Inventors: Davey Mitchell, David Elvidge, Darren Loo, Doug McKay, Joel Vandermarel, Nigel Davis, Sze Kei Luk