Patents by Inventor David O. Richards

David O. Richards 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: 20200005783
    Abstract: A location monitoring system tracks a location of a user within a healthcare facility. When the user is detected in a patient room an electronic controller activates a voice command database having a plurality of voice commands specific to the user. A microphone located in the patient room receives one of the plurality of voice commands. The electronic controller transmits the one of the plurality of voice commands to a remote device positioned outside of the patient room.
    Type: Application
    Filed: June 11, 2019
    Publication date: January 2, 2020
    Inventors: Jerald W. Judy, Bita Akhlaghi, David O. Melgar, Daniel Sampson, Edwin N. Swift, Jennifer A. Gunn, Darren S. Hudgins, Patrick D. Harrison, William B. Richard
  • Patent number: 4358370
    Abstract: A backwashable filter comprises a generally cylindrical housing with an inlet and an outlet, a cylindrical filter basket located within the housing between the inlet and the outlet, and a backwashing arm bearing against the inside face of the filter basket and arranged to rotate about the axis of the filter basket. The filter basket is formed by an inner and outer perforated cage with a filter medium interposed between them. The outer surface of the inner cage is configured to provide channelling between the inner cage and the filter medium to allow liquid to be filtered to contact substantially all of the inner surface of the filter medium. Direct flow of liquid to be filtered from the inside of the inner cage into the backwashing arm along the channelling is prevented by arranging the channelling axially or by arranging the channelling in the circumferential direction and then providing a wide shoe on the backwashing arm.
    Type: Grant
    Filed: April 7, 1981
    Date of Patent: November 9, 1982
    Assignee: British Sidac Limited
    Inventors: Dennis E. Jameson, David O. Richards
  • Patent number: 4358371
    Abstract: A backwashable filter includes a generally cylindrical housing, an inlet opening into the housing and an outlet opening from the housing, a cylindrical filter basket within the housing and arranged between the inlet and the outlet openings, and a backwashing arm bearing against the inside of the filter basket and being rotatable around the inside face of the filter basket. The filter basket comprises a perforated core a filter medium wrapped around the perforated core and a perforated flexible outer clamping band wrapped around the outside of the filter medium with tensioning means to apply tension to the clamping band to clamp the filter medium tightly against the perforated core. This clamping band constrains the filter medium and so prevents it flexing with rotation of the backwashing arm and this enhances its life.
    Type: Grant
    Filed: April 7, 1981
    Date of Patent: November 9, 1982
    Assignee: British Sidac Limited
    Inventors: Dennis E. Jameson, David O. Richards
  • Patent number: 4073997
    Abstract: A composite panel is provided which comprises an organic foam core with layers of inorganic fibers on opposite major surfaces of the core. The fibrous layers are affixed to the core in a manner such that they are functionally integral therewith, thereby providing dimensional stability for the core. In a preferred embodiment, the panel is embodied in roof insulation which consists of a core of organic foam with a mat of inorganic fibers located on an upper surface of the foam core and a layer of inorganic fibers located on a lower surface of the core. The lower surface of the insulation is affixed to an underlying roof structure by a layer of adhesive and specifically asphalt. Alternate layers of asphalt and fibrous mats are applied over the upper mat of the inorganic fibers to complete the roof insulation system.
    Type: Grant
    Filed: September 17, 1976
    Date of Patent: February 14, 1978
    Assignee: Owens-Corning Fiberglas Corporation
    Inventors: David O. Richards, Isaac P. Jones, Homer W. Duffee, Charles E. Nutter