Patents by Inventor Michael Charles Martin

Michael Charles Martin 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).

  • Sensor assembly for tank cars
    Patent number: 7498530
    Abstract: A sensor assembly, system and method for using a sensor assembly is disclosed making use of a sealed switch and an actuator that converts linear motion in a plane to linear motion in a perpendicular plane. The motion of the actuator in the perpendicular plane actuates the switch which signals that hatch is in an open position.
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: March 3, 2009
    Assignee: General Electric Company
    Inventors: Michael Charles Martin, Roger Pittman Hawkins
  • Frequency response testing apparatus
    Patent number: 4095057
    Abstract: Frequency response testing apparatus, developed for use with hearing aids, comprises a generator providing a predetermined varying-frequency input for the device under test, and a discriminator which applies incremental output level signals from the device to a display matrix of LED's under the control of timing signals derived from the generator, the overall arrangement providing a display in the form of a linear graphical plot.
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: June 13, 1978
    Assignee: National Research Development Corporation
    Inventors: Ronald Frederick Power, Alan Anthony Barker, Michael Charles Martin, Brian Clifford Grover