Patents Represented by Attorney Robert Hessin

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  • Capsule charge locking device
    Patent number: 4784061
    Abstract: A method and means for sealed joinder of case and cap members of a capsular shaped charge wherein mating grooves are formed in adjacent walls of a case and cap and a resilient O-ring is compressively retained therein to hold the case and cap in operative assembly to seal from external pressures and fluids while allowing relative rotation of case and cap; wherein increasing external pressures, as in the well bore, will increase the sealing effect and strength of joinder of the assembly.
    Type: Grant
    Filed: October 5, 1987
    Date of Patent: November 15, 1988
    Assignee: Halliburton Company
    Inventor: Glenn B. Christopher
  • Phosphorescent tread plate and composition
    Patent number: 4522861
    Abstract: A wear-resistant phosphorescent material consisting of a mixture of a selected ratio of phosphorescent pigment and bleached aluminum oxide as carried by a catalyst-hardened epoxy resin, such phosphorescent material being placeable in selected array on a tread plates or other tread surface.
    Type: Grant
    Filed: August 22, 1983
    Date of Patent: June 11, 1985
    Assignee: Metalines, Inc.
    Inventor: Charles L. Dunsworth