Patents by Inventor Merle R. Mullet

Merle R. Mullet 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).

  • Mining machine with moveable cutting assembly and method of using the same
    Patent number: 6270163
    Abstract: A mining machine (20) for combined entry and retreat cutting of material located in underground seams including, a movable mainframe (21), a wing (50, 51) extending ahead of the movable mainframe, a cutter assembly (100) positionable proximate the end of the wing for entry cutting a hole in the material when the wing is aligned with the direction of movement of the mainframe, a pivotal connection (130) between the mainframe and the wing for orienting the wing at an angle to the direction of the movement of the mainframe, and a carriage mechanism (80) for moving the cutter assembly along the wing for cutting of the material in proximity to the wing during retreat cutting of the material.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: August 7, 2001
    Assignee: Holmes Limestone Co.
    Inventors: Merle R. Mullet, Rex A. Hummel