Patents by Inventor Wendell C. Hull

Wendell C. Hull 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).

  • Combination valve and regulation for use with pressurized gas cylinders, particularly oxygen cylinders
    Patent number: 7114699
    Abstract: A valve apparatus, and combined valve-regulator apparatus, for safely regulating the flow of combustible gases such as oxygen.
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: October 3, 2006
    Inventors: Wendell C. Hull, Barry E. Newton
  • Combination valve and regulator for use with pressurized gas cylinders, particularly oxygen cylinders
    Publication number: 20040036046
    Abstract: A valve apparatus, and combined valve-regulator apparatus, for safely regulating the flow of combustible gases such as oxygen.
    Type: Application
    Filed: August 19, 2003
    Publication date: February 26, 2004
    Inventors: Wendell C. Hull, Barry E. Newton
  • Cylinder valve and bayonet check-filter with excess-flow protection feature
    Patent number: 6607007
    Abstract: A valve apparatus especially well-suited for use in gaseous oxygen delivery systems. A valve apparatus is provided that substantially reduces the risk of fire in high-pressure oxygen systems. The apparatus is particularly well-suited for use as a plug valve on ordinary cylinder containers, but may be beneficially used in any pressurized gas system, particularly oxygen systems such as those encountered in many industrial facilities. The wetted portion of the valve is isolated from threaded portions to prevent particulate contamination of the gas stream. The valve seat is located to protect it from direct impact of high-velocity gas streams. The inventive valve, and its associated inventive check-filter and excess-flow prevention features, reduces the potential for hazardous combustion at valve points within oxygen delivery systems.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: August 19, 2003
    Inventors: Wendell C. Hull, Barry E. Newton
  • Omni-directional compound paraboloid-hyperboloid radiation device
    Patent number: 4270844
    Abstract: The invention is a device which receives radiation from a point source, from the sun, or from other means, said radiation being received on the surface of a mirrored paraboloid of revolution which is tracking the point source, though the source may be stationary, and reflects the radiation to the mirrored surface of a confocal hyperboloid of revolution whose shape is dependent on the distance to the desired second focus. The hyperboloid reflects radiation of high intensity to the second focus, where the flux is intensified, using a conical mirrored surface or a compound parabolic concentrator, to a flux intensity approaching the surface flux intensity of the sun. The radiation input to the device may also be from an array of point or distributed sources, such as from an array of lasers.
    Type: Grant
    Filed: October 9, 1979
    Date of Patent: June 2, 1981
    Inventors: Milan H. Cobble, Wendell C. Hull, Richard A. Hays