Patents by Inventor David W. Blair

David W. Blair 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: 20240131892
    Abstract: Suspension systems for recreational vehicles are disclosed. The suspension systems may include at least one adjustable member coupling a sway bar to respective suspensions. The suspension systems may include a torque actuator associated with a sway bar.
    Type: Application
    Filed: January 2, 2024
    Publication date: April 25, 2024
    Inventors: Jonathon P. Graus, David D. Helgeson, Kyle W. Olson, Justin T. Anderson, Jacob P. Horky, Kevin P. Blair
  • Patent number: 8308368
    Abstract: A self-lubricating track roller and a method of making the self-lubricating track roller are disclosed. First, an inner ring is provided having a radially outwardly facing surface. A parting agent is applied onto the radially outwardly facing surface. Next, a self-lubricating material is applied over the radially outwardly facing surface. Then, an outer ring is formed around the self-lubricating material such that a radially inwardly facing surface of the outer ring is bonded to the self-lubricating material. A resilient tire is bonded onto the radially outwardly facing surface of the outer ring. In the resulting track roller, the radially outwardly facing surface of the inner ring has a surface profile that corresponds to a mating surface profile of the self-lubricating material that is bonded to the radially inwardly facing surface of the outer ring.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: November 13, 2012
    Assignee: Rexnord Industries, LLC
    Inventors: David W. Blair, Dennis E. Bozych
  • Publication number: 20090016656
    Abstract: The present invention provides a self-lubricating track roller and a method of making the self-lubricating track roller. First, an inner ring is provided having a radially outwardly facing surface. A parting agent is applied onto the radially outwardly facing surface. Next, a self-lubricating material is applied over the radially outwardly facing surface. Then, an outer ring is formed around the self-lubricating material such that a radially inwardly facing surface of the outer ring is bonded to the self-lubricating material. A resilient tire is bonded onto the radially outwardly facing surface of the outer ring. In the resulting track roller, the radially outwardly facing surface of the inner ring has a surface profile that corresponds to a mating surface profile of the the self-lubricating material that is bonded to the radially inwardly facing surface of the outer ring.
    Type: Application
    Filed: July 11, 2008
    Publication date: January 15, 2009
    Inventors: David W. Blair, Dennis E. Bozych
  • Publication number: 20030159546
    Abstract: The present invention provides an anti-tamper nut that has a threaded bore and an angled outer surface. The angled outer surface has a plurality of ribs extending from a first face to a second face of the nut. A wrench adapted to mate with the outer surface of the nut rotationally drives the nut along the threads of a threaded member.
    Type: Application
    Filed: February 28, 2002
    Publication date: August 28, 2003
    Inventor: David W. Blair
  • Patent number: 5463954
    Abstract: A system and method is provided for igniting a propellant with an electrically conductive chemically insensitive polymer. The polymer is an electrical resistance heater to heat the propellant to its ignition temperature. Preferably, the polymer is an organic polymer. Surfaces of the propellant can be coated with the polymer. In the alternative, the polymer can be applied to a hollow bore in the propellant to form a self-pressurizing charge. Advantageously, the present invention controls ignition and prevents unintended ignition of the propellant.
    Type: Grant
    Filed: March 15, 1994
    Date of Patent: November 7, 1995
    Assignee: Princeton Scientific Enterprises, Inc.
    Inventor: David W. Blair
  • Patent number: 4914276
    Abstract: A tubular radiant furnace having multiple radiation shields is capable of producing very high working temperatures in an extremely clean environment. A cool-walled quartz muffle tube surrounded by high temperature electrical heaters in a high temperature cavity defines the work chamber. Concentric radiation shields around the tube and the heaters are supplemented by end shields at both ends to form the high temperature cavity. The shields reduce the radiative loss from the tube and create a uniform high temperature cavity without adding significant thermal inertia to the system. The low thermal inertia leads to a fast response time for the furnace to heat up or cool down. A workpiece located within the working chamber sees the radiant field with a view factor that approaches 100 percent (100%), and this helps make possible the attainment of very high and uniform temperatures. The effect is enhanced by the proximity of the workpiece to the center of the working chamber.
    Type: Grant
    Filed: May 12, 1988
    Date of Patent: April 3, 1990
    Assignee: Princeton Scientific Enterprises, Inc.
    Inventor: David W. Blair
  • Patent number: 4343606
    Abstract: Fuels containing fixed-nitrogen chemical species are combusted in a multi-stage process. The process which converts substantially all of the fixed-nitrogen into molecular nitrogen (and thus avoids the formation of significant amounts of nitrogen oxides from the fixed-nitrogen) consists of four steps: (a) mixing said fuel with at least one first oxidizing agent in amounts such that the equivalence ratio of said fuel to said oxidizing agent is at least about 1.4; (b) partially combusting the mixture resulting from step (a) in at least one first stage at a first temperature of about 1850.degree. to about 2150.degree. K., with a residence time of at least 0.03 second; (c) mixing the combustion products resulting from step (b) with at least one second oxidizing agent in an amount such that the equivalence ratio of combustion products to the total amount of oxidizing agents in the mixture will be about 1.
    Type: Grant
    Filed: February 11, 1980
    Date of Patent: August 10, 1982
    Assignee: Exxon Research & Engineering Co.
    Inventors: David W. Blair, William Bartok, John P. Longwell, Adel F. Sarofim