Patents by Inventor Tsu F. Chen

Tsu F. Chen 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).

  • Drilling monitor
    Patent number: 4507834
    Abstract: A drilling monitor employs laser optics and an associated signal processing device to provide intelligent control capable of making the optimum decision to maintain hole quality and maximize drill life during the drilling of via holes in a circuit board. Twist angle, bending and temperature of the drill are monitored and the drill motor and/or the board is controlled accordingly in response to present data being compared to preprogrammed acceptable standardized data.
    Type: Grant
    Filed: May 27, 1983
    Date of Patent: April 2, 1985
    Assignee: Sperry Corporation
    Inventors: Tsu F. Chen, Edwin R. Phillips
  • Apparatus for evaluating slider flying dynamics
    Patent number: 4416144
    Abstract: Apparatus is provided for imposing measurable wear on the surface of a magnetic recording disk and for determining the relationship of read/write characteristics due to such wear. A dynamic air bearing separates the interface between the disk surface and a slider head. The imposed wear changes the relationship between the head and disk and the changes provide measurable data for experimental evaluation of read/write slider flying dynamics.
    Type: Grant
    Filed: April 21, 1982
    Date of Patent: November 22, 1983
    Assignee: Sperry Corporation
    Inventors: Tsu F. Chen, Juan M. Gottschalk