Patents by Inventor DAVID BIRDWELL

DAVID BIRDWELL 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).

  • Publication number: 20210024106
    Abstract: A friction control composition having high and positive frictional properties for sliding steel surfaces includes a water insoluble hydrocarbon that enables a reduced water content, a rheological additive, a freezing point depressant, a friction modifier, and a lubricant.
    Type: Application
    Filed: October 8, 2020
    Publication date: January 28, 2021
    Inventors: KELVIN CHIDDICK, ALEJANDRO MEDRANO, RANDALL KRINKER, KYLE WILSON, DAVID BIRDWELL
  • Patent number: 10814890
    Abstract: A friction control composition having high and positive frictional properties for sliding steel surfaces includes a water insoluble hydrocarbon that enables a reduced water content, a rheological additive, a freezing point depressant, a friction modifier, and a lubricant.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: October 27, 2020
    Assignee: Whitmore Manufacturing, LLC
    Inventors: Kelvin Chiddick, Alejandro Medrano, Randall Krinker, Kyle Wilson, David Birdwell
  • Publication number: 20190176858
    Abstract: A friction control composition having high and positive frictional properties for sliding steel surfaces includes a water insoluble hydrocarbon that enables a reduced water content, a rheological additive, a freezing point depressant, a friction modifier, and a lubricant.
    Type: Application
    Filed: February 19, 2019
    Publication date: June 13, 2019
    Inventors: KELVIN CHIDDICK, ALEJANDRO MEDRANO, RANDALL KRINKER, KYLE WILSON, DAVID BIRDWELL
  • Patent number: 10214225
    Abstract: A friction control composition having high and positive frictional properties for sliding steel surfaces includes a water insoluble hydrocarbon that enables a reduced water content, a rheological additive, a freezing point depressant, a friction modifier, and a lubricant.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: February 26, 2019
    Assignee: Whitmore Manufacturing, LLC
    Inventors: Kelvin Chiddick, Alejandro Medrano, Randall Krinker, Kyle Wilson, David Birdwell
  • Patent number: 10173700
    Abstract: A top of rail (TOR) applicator has a bar positioned in a housing and an exit orifice on the upper portion of the bar for delivering a friction control composition to the crown of a railhead. The upper portion of the bar slopes away from the friction control composition exit orifice. The bar may be composed of an elastomer such as polyurethane. A passageway may extend from an inlet port to the exit orifice. The friction reduction composition is pumped into the inlet port, through the passageway to the exit orifice and then onto the crown of the railhead. The friction reduction composition may be thixotropic.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: January 8, 2019
    Assignee: Whitmore Manufacturing, LLC
    Inventors: Dalton Lee Graham, Bruce Robert Wise, Kevin Ray Adkins, Alejandro Medrano, Randall Krinker, Kelvin Chiddick, Kyle Wilson, David Birdwell
  • Publication number: 20170210400
    Abstract: A friction control composition having high and positive frictional properties for sliding steel surfaces includes a water insoluble hydrocarbon that enables a reduced water content, a rheological additive, a freezing point depressant, a friction modifier, and a lubricant.
    Type: Application
    Filed: April 7, 2017
    Publication date: July 27, 2017
    Inventors: KELVIN CHIDDICK, ALEJANDRO MEDRANO, RANDALL KRINKER, KYLE WILSON, DAVID BIRDWELL
  • Patent number: 9617498
    Abstract: A friction control composition having high and positive factional properties for sliding steel surfaces includes a water insoluble hydrocarbon that enables a reduced water content, a rheological additive, a freezing point depressant, a friction modifier, and a lubricant.
    Type: Grant
    Filed: January 3, 2014
    Date of Patent: April 11, 2017
    Assignee: Whitmore Manufacturing, LLC
    Inventors: Kelvin Chiddick, Alejandro Medrano, Randall Krinker, Kyle Wilson, David Birdwell
  • Publication number: 20160264159
    Abstract: A top of rail (TOR) applicator has a bar positioned in a housing and an exit orifice on the upper portion of the bar for delivering a friction control composition to the crown of a railhead. The upper portion of the bar slopes away from the friction control composition exit orifice. The bar may be composed of an elastomer such as polyurethane. A passageway may extend from an inlet port to the exit orifice. The friction reduction composition is pumped into the inlet port, through the passageway to the exit orifice and then onto the crown of the railhead. The friction reduction composition may be thixotropic.
    Type: Application
    Filed: December 11, 2015
    Publication date: September 15, 2016
    Inventors: Dalton Lee Graham, Bruce Robert Wise, Kelvin Ray Adkins, Alejandro Medrano, Randall Krinker, Kelvin Chiddick, Kyle Wilson, David Birdwell
  • Publication number: 20150344802
    Abstract: A friction control composition having high and positive factional properties for sliding steel surfaces includes a water insoluble hydrocarbon that enables a reduced water content, a rheological additive, a freezing point depressant, a friction modifier, and a lubricant.
    Type: Application
    Filed: January 3, 2014
    Publication date: December 3, 2015
    Applicant: THE WHITMORE MANUFACTURING COMPANY
    Inventors: KELVIN CHIDDICK, ALEJANDRO MEDRANO, RANDALL KRINKER, KYLE WILSON, DAVID BIRDWELL
  • Patent number: 5939591
    Abstract: Disclosed is an apparatus and process for producing a tripropylene glycol in which alkylene oxide, water, an acid catalyst and a dipropylene glycol are contacted together under conditions suitable to form the tripropylene glycol. Water is present in the reaction mixture in the range of about 1 to about 50 weight percent of the reaction mixture. The ratio of water to alkylene oxide is less than about 9. The tripropylene glycol thus produced exhibits a higher primary hydroxyl group content generally exceeding 36 percent. Such tripropylene glycols find utility in the production of acrylics. Also disclosed is a process for making esters from such glycols.
    Type: Grant
    Filed: December 1, 1997
    Date of Patent: August 17, 1999
    Assignee: The Dow Chemical Company
    Inventors: Jeffrey David Birdwell, Micheal L. Chappell, Philip Jay Carlberg, Frank Harold Murphy, Robert Page Shirtum, Walter L. Wernli
  • Patent number: 5693870
    Abstract: Disclosed is an apparatus and process for producing a tripropylene glycol in which alkylene oxide, water, an acid catalyst and a dipropylene glycol are contacted together under conditions suitable to form the tripropylene glycol. Water is present in the reaction mixture in the range of about 1 to about 50 weight percent of the reaction mixture. The ratio of water to alkylene oxide is less than about 9. The tripropylene glycol thus produced exhibits a higher primary hydroxyl group content generally exceeding 36 percent. Such tripropylene glycols find utility in the production of acrylics. Also disclosed is a process for making esters from such glycols.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: December 2, 1997
    Assignee: The Dow Chemical Company
    Inventors: Jeffrey David Birdwell, Philip Jay Carlberg, Micheal L. Chappell, Frank Harold Murphy, Robert Page Shirtum, Walter L. Wernli