Patents by Inventor Henry Quackenbush

Henry Quackenbush 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).

  • Patent number: 4056369
    Abstract: A process and apparatus for recovering gasoline or other solvents from solvent laden air is disclosed. The solvent laden air is contacted at ambient pressure and temperature in a vessel with a mixture of an adsorbent for the desired material, e.g., activated charcoal, and an inert compound possessing a high heat capacity, e.g., aluminum oxide. After the adsorbent is essentially saturated with the solvent, flow of solvent laden air into the vessel is terminated. The mixture of materials in the vessel is then heated by indirect heat exchange (e.g., steam coils buried in the mixture) to a temperature below the vaporization temperature of the solvent thereby indirectly treating the solvent adsorbed on the material. A pump is then operated to draw the air from the vessel at a rate that reduces the pressure in the vessel sufficiently to vaporize the solvent. Thus, substantially all of the solvent is drawn out of the vessel with the air.
    Type: Grant
    Filed: November 25, 1975
    Date of Patent: November 1, 1977
    Inventor: Henry Quackenbush