Patents Represented by Attorney Charles R. Rutherford
  • Patent number: 4106776
    Abstract: A method and apparatus for rotatably supporting and driving phonograph records, memory disks or the like while substantially reducing if not eliminating the undesirable effects of mechanical vibrations and drive speed fluctuations. A support frame houses a tank which holds a quantity of liquid such as a mixture of silicon oil and water. A first generally circular member having a plurality of spaced vanes thereon is mounted within the tank adjacent the bottom thereof so that it can be positively rotatably driven from a drive mechanism external to the tank. A second generally circular member having a plurality of spaced vanes thereon is positioned vertically above the first member so that it is supported solely upon the liquid and so that it is free to rotate with respect thereto without any mechanical interconnection to the first member. At least a portion of the vanes of the second member extend downwardly into the liquid but remain vertically spaced apart from the vanes of the first member.
    Type: Grant
    Filed: April 27, 1977
    Date of Patent: August 15, 1978
    Inventor: David M. Gillespie
  • Patent number: D244628
    Type: Grant
    Filed: October 24, 1975
    Date of Patent: June 7, 1977
    Inventor: Forrest S. Wright
  • Patent number: D244629
    Type: Grant
    Filed: October 24, 1975
    Date of Patent: June 7, 1977
    Inventor: Forrest S. Wright