Patents Examined by Xigo Wu
  • Point and select device
    Patent number: 4939508
    Abstract: A point and select device is disclosed in which a sphere protruding from one major surface of a housing can serve as either a trackball or the moving element in a mouse. Actuators on either side of the device are selected according to the use of the device. The sense of motion for up/down is reversed between the two modes of operation.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: July 3, 1990
    Assignee: Emtek Health Care Systems, Inc.
    Inventors: James G. Lawrence, Oscar R. Diaz, Robert E. Erdmann, Jr.