Patents by Inventor J. Thomas Light

J. Thomas Light 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: 10280828
    Abstract: A very low water (VLW) heat transfer fluid, having an atmospheric boiling point of about 148° C. (about 300° F.) and a low temperature operating limit (LTOL) of ?40° C., or below, comprised of one or more polyhydric alcohols, one or more corrosion inhibitors, and between 5% and 10% water. The heat transfer fluid retains many of the features of a non-aqueous heat transfer fluid, while providing a substantially lower viscosity. The heat transfer fluid is suitable for use in internal combustion engines as an engine coolant and in other heat transfer applications.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: May 7, 2019
    Assignee: EVANS COOLING SYSTEMS, INC.
    Inventor: J Thomas Light
  • Publication number: 20160326940
    Abstract: A very low water (VLW) heat transfer fluid, having an atmospheric boiling point of about 148° C. (about 300° F.) and a low temperature operating limit (LTOL) of ?40° C. or below, comprised of one or more polyhydric alcohols, one or more corrosion inhibitors, and between 5% and 10% water. The heat transfer fluid retains many of the features of a non-aqueous heat transfer fluid, while providing a substantially lower viscosity. The heat transfer fluid is suitable for use in internal combustion engines as an engine coolant and in other heat transfer applications.
    Type: Application
    Filed: May 6, 2016
    Publication date: November 10, 2016
    Inventor: J. Thomas Light
  • Publication number: 20150284617
    Abstract: Non-aqueous heat transfer fluids or engine coolants for internal combustion engines comprised primarily of ethylene glycol, a glycol that exhibits supercooling. The fluids are further comprised of 1,3 propanediol and/or diethylene glycol which also exhibit supercooling. The combinations expand the Low Temperature Operating Limit of the ethylene glycol, while avoiding the extent of the viscosity increase imposed by the use of 1,2 propanediol for the same purpose.
    Type: Application
    Filed: March 31, 2015
    Publication date: October 8, 2015
    Inventor: J. Thomas Light
  • Patent number: 8431038
    Abstract: A reduced toxicity ethylene glycol-based antifreeze/heat transfer fluid concentrate is provided comprised of ethylene glycol, a polyhydric alcohol having a boiling point above about 150° C. and that acts as an alcohol dehydrogenase inhibitor, such as propylene glycol or glycerol, and selected additives. The antifreeze/heat transfer fluid concentrate may be combined with water to form a coolant solution for use in internal combustion engines.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: April 30, 2013
    Assignee: Evans Cooling Systems, Inc.
    Inventors: John W. Evans, J. Thomas Light
  • Patent number: 8394287
    Abstract: A non-aqueous, reduced toxicity polyhydric alcohol based heat transfer fluid is provided comprised of at least one polyhydric alcohol that acts as an ADH enzyme inhibitor, such as for example propylene glycol, thereby reducing the toxicity of ethylene glycol if ethylene glycol. The heat transfer fluid may also include corrosion inhibitors that are soluble in the polyhydric alcohols used for the heat transfer fluid. The heat transfer fluid may be used as a coolant in internal combustion engines such as automobile engines, a coolant for cooling electrical or electronic components, as a heat transfer fluid for solar energy heating systems, or a heat transfer fluid for maintaining temperatures in industrial processes. A low toxicity preparation fluid for absorbing water from heat exchange systems prior to installation of the heat transfer fluid is also provided that is comprised of ethylene glycol and at least one polyhydric alcohol, preferably propylene glycol, that acts as an ADH enzyme inhibitor.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: March 12, 2013
    Assignee: Evans Cooling Systems, Inc.
    Inventors: John W. Evans, J. Thomas Light
  • Publication number: 20120211694
    Abstract: A reduced toxicity ethylene glycol-based antifreeze/heat transfer fluid concentrate is provided comprised of ethylene glycol, a polyhydric alcohol having a boiling point above about 150° C. and that acts as an alcohol dehydrogenase inhibitor, such as propylene glycol or glycerol, and selected additives. The antifreeze/heat transfer fluid concentrate may be combined with water to form a coolant solution for use in internal combustion engines.
    Type: Application
    Filed: February 14, 2012
    Publication date: August 23, 2012
    Inventors: John W. Evans, J. Thomas Light
  • Patent number: 8206607
    Abstract: A method for cooling an internal combustion engine using a reduced toxicity, ethylene glycol and water based heat transfer fluid is provided. A heat transfer fluid is formulated comprising water and a glycol component consisting of ethylene glycol and either propylene glycol or glycerol. Propylene glycol may be provided in an amount between 5% to less than 30% of the total weight of the glycol component. Glycerol may be provided in an amount between 5% to 20% of the total weight of the glycol component. The glycol component is less toxic than 10,000 mg/kg on an acute LD50(rat) oral toxicity basis. The water comprises between 40% and 70% by weight of the total weight of the heat transfer fluid. The cooling system of the internal combustion engine is substantially filled with the heat transfer fluid such that the heat transfer fluid absorbs heat that is produced by the internal combustion engine and releases the absorbed heat to the atmosphere.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: June 26, 2012
    Assignee: Evans Cooling Systems, Inc.
    Inventors: John W. Evans, J. Thomas Light
  • Publication number: 20100176334
    Abstract: A non-aqueous, reduced toxicity diol based heat transfer fluid is provided comprised of at least one diol that acts as an antidote for ethylene glycol poisoning, such as for example propylene glycol. The heat transfer fluid may also include corrosion inhibitors that are soluble in the diols used for the heat transfer fluid. The heat transfer fluid may be used as a coolant in internal combustion engines such as automobile engines.
    Type: Application
    Filed: February 1, 2010
    Publication date: July 15, 2010
    Inventors: John W. Evans, J. Thomas Light
  • Patent number: 7655154
    Abstract: A non-aqueous, reduced toxicity diol based heat transfer fluid is provided comprised of at least one diol that acts as an antidote for ethylene glycol poisoning, such as propylene glycol. The heat transfer fluid may also include corrosion inhibitors that are soluble in the diols used for the heat transfer fluid. The heat transfer fluid may be used as a coolant in internal combustion engines such as automobile engines.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: February 2, 2010
    Assignee: Evans Cooling Systems, Inc.
    Inventors: John W. Evans, J. Thomas Light
  • Publication number: 20090057607
    Abstract: A reduced toxicity ethylene glycol-based antifreeze/heat transfer fluid concentrate is provided comprised of ethylene glycol, a polyhydric alcohol having a boiling point above about 150° C. and that acts as an alcohol dehydrogenase inhibitor, such as propylene glycol or glycerol, and selected additives. The antifreeze/heat transfer fluid concentrate may be combined with water to form a coolant solution for use in internal combustion engines.
    Type: Application
    Filed: June 29, 2007
    Publication date: March 5, 2009
    Inventors: John W. Evans, J. Thomas Light
  • Patent number: 7040042
    Abstract: An alpine ski boot is provided that consists of a rigid sole and a shell-less substantially flexible upper portion that is attached to the sole. The boot is secured to the wearer's foot by laces or buckles. The boot is further secured to the wearer's mid-foot area by semi-rigid securing ears closed by a lever actuated ribbed nylon strap. The sole is comprised of rigid plastic and the heel and toe portions of the sole may conform to the requirements of ISO 5355 for ski boots. The ski boot has a plastic cuff that surrounds the upper portion of the ski boot that follows the movement of the lower leg and provides lateral support to the ankle while introducing minimal or no restriction to the fore and aft flexion of the ankle.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: May 9, 2006
    Inventor: J. Thomas Light
  • Publication number: 20030136809
    Abstract: A non-aqueous, reduced toxicity diol based heat transfer fluid is provided comprised of at least one diol that acts as an antidote for ethylene glycol poisoning, such as for example propylene glycol. The heat transfer fluid may also include corrosion inhibitors that are soluble in the diols used for the heat transfer fluid. The heat transfer fluid may be used as a coolant in internal combustion engines such as automobile engines.
    Type: Application
    Filed: January 20, 2003
    Publication date: July 24, 2003
    Inventors: John W. Evans, J. Thomas Light
  • Publication number: 20030071242
    Abstract: A non-aqueous, reduced toxicity polyhydric alcohol based heat transfer fluid is provided comprised of at least one polyhydric alcohol that acts as an ADH enzyme inhibitor, such as for example propylene glycol, thereby reducing the toxicity of ethylene glycol if ethylene glycol. The heat transfer fluid may also include corrosion inhibitors that are soluble in the polyhydric alcohols used for the heat transfer fluid. The heat transfer fluid may be used as a coolant in internal combustion engines such as automobile engines, a coolant for cooling electrical or electronic components, as a heat transfer fluid for solar energy heating systems, or a heat transfer fluid for maintaining temperatures in industrial processes. A low toxicity preparation fluid for absorbing water from heat exchange systems prior to installation of the heat transfer fluid is also provided that is comprised of ethylene glycol and at least one polyhydric alcohol, preferably propylene glycol, that acts as an ADH enzyme inhibitor.
    Type: Application
    Filed: August 23, 2001
    Publication date: April 17, 2003
    Inventors: John W. Evans, J. Thomas Light
  • Publication number: 20030038276
    Abstract: A non-hazardous, reduced toxicity ethylene glycol-based antifreeze/heat transfer fluid concentrate is provided comprised of ethylene glycol, an antidote for ethylene glycol poisoning, such as propylene glycol, and selected additives. The antifreeze/heat transfer fluid concentrate may be combined with water to form a coolant solution for use in internal combustion engines.
    Type: Application
    Filed: October 3, 2002
    Publication date: February 27, 2003
    Inventors: John W. Evans, J. Thomas Light
  • Publication number: 20020171063
    Abstract: A reduced toxicity ethylene glycol-based antifreeze/heat transfer fluid concentrate is provided comprised of ethylene glycol, a polyhydric alcohol having a boiling point above about 150° C. and that acts as an alcohol dehydrogenase inhibitor, such as propylene glycol or glycerol, and selected additives. The antifreeze/heat transfer fluid concentrate may be combined with water to form a coolant solution for use in internal combustion engines. A method is also provided for reducing the toxicity of fluids containing ethylene glycol by addition to the fluid of a polyhydric alcohol having a boiling point above about 150° C. and that acts as an alcohol dehydrogenase inhibitor, such as propylene glycol or glycerol.
    Type: Application
    Filed: August 23, 2001
    Publication date: November 21, 2002
    Inventors: John W. Evans, J. Thomas Light
  • Publication number: 20020033470
    Abstract: A non-aqueous, reduced toxicity diol based heat transfer fluid is provided comprised of at least one diol that acts as an antidote for ethylene glycol poisoning, such as for example propylene glycol. The heat transfer fluid may also include corrosion inhibitors that are soluble in the diols used for the heat transfer fluid. The heat transfer fluid may be used as a coolant in internal combustion engines such as automobile engines.
    Type: Application
    Filed: July 19, 2001
    Publication date: March 21, 2002
    Inventors: John W. Evans, J. Thomas Light
  • Publication number: 20020020828
    Abstract: A non-hazardous, reduced toxicity ethylene glycol-based antifreeze/heat transfer fluid concentrate is provided comprised of ethylene glycol, an antidote for ethylene glycol poisoning, such as propylene glycol, and selected additives. The antifreeze/heat transfer fluid concentrate may be combined with water to form a coolant solution for use in internal combustion engines.
    Type: Application
    Filed: June 8, 2001
    Publication date: February 21, 2002
    Inventors: John W. Evans, J. Thomas Light