Patents by Inventor Lawrence D. Hopkins

Lawrence D. Hopkins 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).

  • Inlet air flow conditioning for centrifugal fans
    Patent number: 5088886
    Abstract: A grate of rigid intersecting strips is positioned across the inlet cone of a fan for diffusing the vortex of inlet air to the fan and to induce a uniform velocity gradient at the fan blades. This conditioning of the inlet air reduces turbulence during operation of the fan and, therefore, noise and vibration.
    Type: Grant
    Filed: August 28, 1990
    Date of Patent: February 18, 1992
    Assignee: Sinko Kogyo Co., Ltd.
    Inventor: Lawrence D. Hopkins