Patents by Inventor Andy R. Dodson

Andy R. Dodson 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).

  • Mechanically-bonded, monolithic sealing ring for stuffing box including axially central portion made of compressed flexible foamed graphite tape
    Patent number: 5135240
    Abstract: A mechanically-bonded, monolithic sealing ring is provided for a stuffing box of a high temperature, high pressure valve or pump. In this ring, the components are pre-united by axially squeezing together originally separate center and end rings in a die assembly of a hydraulic press. By preference, the two axially extreme portions of the monolithic ring are made of braided graphite and the axially central portion of the monolithic ring is made from spirally-wrapped foamed flexible graphite tape which, in the course of die-forming the monolithic ring, is axially compressed thereby densifying it and mechanically bonding it with the end rings. The monolithic ring is easily installed in a stuffing box in one piece.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: August 4, 1992
    Assignee: Sealing Equipment Products Company
    Inventor: Andy R. Dodson
  • Method of manufacturing a mechanically-bonded, monolithic sealing ring for stuffing box including axially central portion made of compressed flexible foamed graphite tape
    Patent number: 5050298
    Abstract: A mechanically-bonded, monolithic sealing ring is provided for a stuffing box of a high temperature, high pressure valve or pump. In this ring, the components are pre-united by axially squeezing together originally separate center and end rings in a die assembly of a hydraulic press. By preference, the two axially extreme portions of the monolithic ring are made of braided graphite and the axially central portion of the monolithic ring is made from spirally-wrapped foamed flexible graphite tape which, in the course of die-foaming the monolithic ring, is axially compressed thereby densifying it and mechanically bonding it with the end rings. The monolithic ring is easily installed in a stuffing box in one piece.
    Type: Grant
    Filed: June 12, 1990
    Date of Patent: September 24, 1991
    Assignee: Sealing Equipment Products Co.
    Inventor: Andy R. Dodson