Patents by Inventor Elvin G. Boice

Elvin G. Boice 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).

  • Torqued drill pipe identification
    Patent number: 4317585
    Abstract: Suitable marks on protected places at opposite ends of a drill pipe make it possible to inspect the pipe after it has been used in a drill string to determine whether it has been subjected to excessive torque in the course of its previous use, so that it should not be used again in a new string. This reduces the risk of any pipe breaking in the new string, which would cause great trouble and expense.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: March 2, 1982
    Assignee: Reynolds Metals Company
    Inventor: Elvin G. Boice
  • Wear resistant drill pipe collar and method of making same
    Patent number: 4060286
    Abstract: A wear-resistant drill pipe collar and method of making same are provided wherein such collar has at least one annular groove defined therein and such groove has cooperating surfaces which hold a plurality of easily installed and removed wear-resistant inserts which protect the collar and its associated pipe structure against excessive wear during rotation and axial movement thereof in an abrasive environment.
    Type: Grant
    Filed: October 1, 1976
    Date of Patent: November 29, 1977
    Assignee: Reynolds Metals Company
    Inventor: Elvin G. Boice