Patents by Inventor Robert Murphey

Robert Murphey 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).

  • Patent number: 6672329
    Abstract: An in-wall retractable water hose assembly for retracting and storing a water hose, having a housing located within a dwelling and an insulated front access door for providing access to the hose from outside the dwelling. A reel assembly is mounted within the housing on which the water hose is spooled, and a motor connected to the reel assembly effects rotation of the reel. A power box is positioned within the housing and has a power switch in communication with the motor. A movable casing is mounted on the reel assembly, the casing having a channel for accommodating the water hose. Movement of the casing along the reel assembly determines the positioning of the hose and maintains an even distribution of the hose along the reel. A stabilizing bar prevents wobbling of the casing during retraction of the water hose.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: January 6, 2004
    Inventors: Rodney Brooks, Robert Murphey
  • Patent number: 6131661
    Abstract: A method for removing filtercake from a subterranean borehole comprising drilling the borehole with a drilling fluid that includes additives to form a filtercake having an oxidation-degradable component, preferably a polymer. The filtercake is contacted with a precursor that forms an oxidizing agent at downhole temperatures to degrade the polymers within the filtercake. Alternatively one or more catalysts for activating the precursor of an oxidizing agent is embedded within the filtercake. The catalyst activates the precursor as the precursor is flushed over the filtercake and remains in contact with the filtercake to form an oxidizing agent to degrade the oxidation-degradable agent and decompose the filtercake. The remaining particles of decomposed filtercake are then flushed away.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: October 17, 2000
    Assignee: Tetra Technologies Inc.
    Inventors: Richard Paul Conner, Joseph Robert Murphey
  • Patent number: 6124244
    Abstract: A drilling fluid comprising a blend of brine and additives for maintaining rheological properties in a neutral or slightly acidic brine and a method for using the drilling fluid to drill into a producing formation are disclosed. The drilling fluid comprises viscosifying polymer and fluid loss polymer that function in the brine without substantially adversely affecting their properties. The brine is substantially free of insoluble solids. The viscosifying polymer and/or the fluid loss control polymer can be acid soluble. Zinc salts in the form of zinc bromide alone or in a mixture of zinc bromide and calcium bromide are added to increase the density of the brine solution. The viscosifying polymer has pendant amide and sulfonic acid or sulfonate groups. Alternatively or additionally, the viscosifying polymer comprises a polysaccharide. The fluid loss control polymer can comprise a cross-linked, cationic or amphoteric starch. Soluble solids are dispersed in the brine.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: September 26, 2000
    Assignee: Tetra Technologies Inc
    Inventor: Joseph Robert Murphey
  • Patent number: 5155493
    Abstract: Single or multiple players of electrically insulating tape have adhesive applied to one surface for the dielectric of the patch antenna. Electrically conductive foil tape with adhesive applied to one surface is used to create the radiating element and the ground plane. The antenna structure can then be mounted to the desired surface by means of structural tape adhesives. The resultant sandwich structure forms a highly flexible, low profile, low cost, rugged conformal antenna for radiating radio frequency energy. Modification and control of the electrical and performance characteristics of the antenna can be accomplished by non-uniform thickness of the dielectric, using insulating tape sections which differ in dielectric constant, incorporating PIN diodes with optical of electrical control, etc.
    Type: Grant
    Filed: August 28, 1990
    Date of Patent: October 13, 1992
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Michael H. Thursby, Barry G. Grossman, Wesley W. Shleton, Robert A. Murphey, G. Edward Keller, Jr.