Patents by Inventor Larry D. Howlett

Larry D. Howlett 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).

  • OSMOTIC ENERGY TRANSFER DEVICES AND METHODS
    Publication number: 20240141877
    Abstract: Osmotic energy transfer systems utilize cyclic electro-chemical stimuli to induce an osmotic gradient and corresponding fluid flows across a semi-permeable membrane. The fluid transfers and osmotic flows are converted into mechanical displacements. By cycling or pulsing the electro-chemical stimuli, fluid transfers across the semi-permeable membrane repeatedly alternatingly change direction over time and correspondingly realizing a cycle of reciprocating mechanical displacements.
    Type: Application
    Filed: January 8, 2024
    Publication date: May 2, 2024
    Inventor: Larry D. Howlett
  • Osmotic energy transfer devices and methods
    Patent number: 11867159
    Abstract: Osmotic energy transfer systems utilize cyclic electro-chemical stimuli to induce an osmotic gradient and corresponding fluid flows across a semi-permeable membrane. The fluid transfers and osmotic flows are converted into mechanical displacements. By cycling or pulsing the electro-chemical stimuli, fluid transfers across the semi-permeable membrane repeatedly alternatingly change direction over time and correspondingly realizing a cycle of reciprocating mechanical displacements.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: January 9, 2024
    Inventor: Larry D. Howlett
  • OSMOTIC ENERGY TRANSFER DEVICES AND METHODS
    Publication number: 20190219038
    Abstract: Osmotic energy transfer systems utilize cyclic electro-chemical stimuli to induce an osmotic gradient and corresponding fluid flows across a semi-permeable membrane. The fluid transfers and osmotic flows are converted into mechanical displacements. By cycling or pulsing the electro-chemical stimuli, fluid transfers across the semi-permeable membrane repeatedly alternatingly change direction over time and correspondingly realizing a cycle of reciprocating mechanical displacements.
    Type: Application
    Filed: December 11, 2018
    Publication date: July 18, 2019
    Inventor: Larry D. Howlett
  • Cooling tower with plume prevention system
    Patent number: 4361524
    Abstract: Plume formation by exhaust air from wet cooling towers during periods when ambient air conditions are conducive to the formation of such plumes is prevented by preheating inlet air and/or precooling influent hot water to reduce the temperature difference between the air and water and consequently the water content of exhaust air to that which can be absorbed by the ambient atmosphere thus avoiding plume formation.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: November 30, 1982
    Inventor: Larry D. Howlett