Patents by Inventor Charles P. Ericson

Charles P. Ericson 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).

  • Patent number: 4551355
    Abstract: A disk is rotated at high speed on a spindle while fluid carrying magnetic medium material is applied to the disk through a dispensing nozzle which starts at the outside diameter of the disk and travels to the inside diameter, pauses momentarily, and then travels back to the outside diameter. As the fluid is applied, a thin film of medium material adheres to the disk while the excess fluid forms a protective coating over this thin film as it flows radially off of the disk due to the centrifugal force generated by the high speed of rotation. The nozzle discharge pressure and the high rotational speed of the disk result in a very thin film of magnetic medium material being applied to the disk. The rate of nozzle travel can be adjusted to vary the medium material film thickness. Immediately following the high speed coating application step the speed of the disk is substantially reduced and the disk is exposed to a magnetic orienting field during an orientation step.
    Type: Grant
    Filed: July 26, 1984
    Date of Patent: November 5, 1985
    Assignee: Magnegic Peripherals
    Inventors: Charles P. Ericson, Bahram Shadzi