Patents by Inventor Nigel DAVID

Nigel DAVID 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).

  • Passive refrigeration system using carbon dioxide snow
    Patent number: 12416440
    Abstract: A passive refrigeration apparatus comprising: (i) a container defining a cargo space; (ii) a liquid carbon dioxide cylinder; (iii) a control valve, in fluid communication with the cylinder; (iv) a controller for activating the control valve to control the flow of liquid CO2; and (v) a heat transfer assembly within the container, in fluid communication with the control valve; wherein the heat transfer assembly has (a) an expansion section for receiving the flow of liquid CO2; and (b) an expansion chamber bounded by a heat transfer surface in thermal contact with the cargo space; wherein the expansion section allows the vaporization of the liquid CO2 into the expansion chamber to create a mixture of carbon dioxide snow and CO2, thereby cooling the cargo space via the heat transfer surface.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: September 16, 2025
    Assignee: CRYOLOGISTICS REFRIGERATION TECHNOLOGIES LTD.
    Inventors: Will Spaulding, Adrian Gunstone, Liam Welgan-Gunn, Eldad Alber, Nigel David
  • PASSIVE REFRIGERATION SYSTEM USING CARBON DIOXIDE SNOW
    Publication number: 20220170684
    Abstract: A passive refrigeration apparatus comprising: (i) a container defining a cargo space; (ii) a liquid carbon dioxide cylinder; (iii) a control valve, in fluid communication with the cylinder; (iv) a controller for activating the control valve to control the flow of liquid CO2; and (v) a heat transfer assembly within the container, in fluid communication with the control valve; wherein the heat transfer assembly has (a) an expansion section for receiving the flow of liquid CO2; and (b) an expansion chamber bounded by a heat transfer surface in thermal contact with the cargo space; wherein the expansion section allows the vaporization of the liquid CO2 into the expansion chamber to create a mixture of carbon dioxide snow and CO2, thereby cooling the cargo space via the heat transfer surface.
    Type: Application
    Filed: March 17, 2020
    Publication date: June 2, 2022
    Inventors: Will SPAULDING, Adrian GUNSTONE, Liam WELGAN-GUNN, Eldad ALBER, Nigel DAVID