Patents by Inventor Donald G. Cawelti

Donald G. Cawelti 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).

  • Bobbin winding control
    Patent number: 5110065
    Abstract: A laser beam (12) scans a filament (8) being wound onto a bobbin (42) sensing the winding angle of attack .beta. and on determining a variance of the angle from a predetermined desired angle generating a signal in a filament position monitor and control (38) for energizing a bobbin carriage drive (40) to correct the winding angle .beta.. Additionally, the laser beam (12) can scan filament (18) before it becomes the last winding on the bobbin (42) and on a climb-back or gap occurring the filament position monitor and control (38) reverses the spindle drive (41) to remove the climb-back or gap and then reassumes normal carriage drive (40) and spindle drive (41).
    Type: Grant
    Filed: March 14, 1991
    Date of Patent: May 5, 1992
    Assignee: Hughes Aircraft Company
    Inventors: Donald G. Cawelti, Bryan F. Berlin, John T. Kenna
  • Force rate sensor assembly
    Patent number: 4420123
    Abstract: A force rate sensor for providing a signal proportional to the time rate of hange of an applied force.
    Type: Grant
    Filed: October 19, 1981
    Date of Patent: December 13, 1983
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: David S. Fox, Donald G. Cawelti