Patents by Inventor Kraig M. Lujan

Kraig M. Lujan 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).

  • Electronic method and apparatus for detecting and reporting dislocation of heavy mining equipment
    Patent number: 6870485
    Abstract: A method and apparatus for preventing the unexpected loss of heavy mining equipment by detecting the separation of heavy metal parts at an early stage in the separation process, and providing a warning signal in response to which the particular machine that is having the difficulty may then be shut down in a timely manner. A spring-loaded switch is sandwiched between the heavy metal parts, which upon partial separation of the parts then expands and turns on an electrical switch to activate a radio transmitter, sending an alarm signal to a receiver at a remote location.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: March 22, 2005
    Inventors: Kraig M. Lujan, Lex Lujan
  • Break-away motion detector and signal transmitter
    Publication number: 20040227645
    Abstract: A motion detector and signal transmitter for use in an apparatus for detecting and reporting dislocation of heavy mining equipment. The motion detector has an electromagnetic transducer that detects relative motion between two metal parts that are normally held together in surface engagement.
    Type: Application
    Filed: May 16, 2003
    Publication date: November 18, 2004
    Inventors: Kraig M. Lujan, Lex Lujan
  • Electronic method and apparatus for detecting and reporting dislocation of heavy mining equipment
    Publication number: 20030112153
    Abstract: A method and apparatus for preventing the unexpected loss of heavy mining equipment by detecting the separation of heavy metal parts at an early stage in the separation process, and providing a warning signal in response to which the particular machine that is having the difficulty may then be shut down in a timely manner. A spring-loaded switch is sandwiched between the heavy metal parts, which upon partial separation of the parts then expands and turns on an electrical switch to activate a radio transmitter, sending an alarm signal to a receiver at a remote location.
    Type: Application
    Filed: January 18, 2002
    Publication date: June 19, 2003
    Inventors: Kraig M. Lujan, Lex Lujan