Patents Assigned to John P. Murphy
  • Compact disc playback enhancer
    Patent number: 5590114
    Abstract: The playback of a compact disc is enhanced by adhering to the compact disc an annular ring to increase the frictional engagement between the disc and the spindle upon which it turns. The playback is further enhanced by adhering a layer of soft, flexible material to dampen vibrations caused by the variations in speed by which the compact disc turns.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: December 31, 1996
    Assignee: John P. Murphy
    Inventor: John P. Murphy