Patents by Inventor Robert Nelson Eakin

Robert Nelson Eakin 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).

  • Method of and apparatus for feeding and inserting bolts in a mine roof
    Patent number: 4079592
    Abstract: In an apparatus for installing resin anchored roof bolts in a mine roof, continuous bolt material is stored on a spool rotatably mounted on a mobile roof bolter frame. As the apparatus advances along the mine passageway, the bolt material is uncoiled from the spool and guided upwardly into spaced apart, resin filled holes that are preformed in the mine roof. The bolt material is severed just beneath the roof at each hole to form a unitary roof bolt. A stop is formed in the unitary bolt with a hydraulically operated head and mandrel mechanism that makes a right angle bend in the bolt just beneath the mine roof.
    Type: Grant
    Filed: March 4, 1977
    Date of Patent: March 21, 1978
    Assignee: The United States of America as represented by the Secretary of the Interior
    Inventor: Robert Nelson Eakin