Patents Examined by M. Kevin Boyer
  • Patent number: 4490870
    Abstract: A roller having a core of natural rubber and an electrostatically activatable, mechanically chargeable outer surface is secured to a handle for rotation about its axis. The outer tacky surface is composed of a soft, flexible, open-air cured silicone polymer having a Shore A durometer hardness of approximately 30. The tacky outer surface is not caused by sticky adhesive but is permanent and formed during the curing process. The outer surface is mechanically chargeable and cleanable by rolling the surface over a second surface covered with a pressure sensitive adhesive. The second surface in one embodiment is the outer surface of a second roller which is biased into contact with the outer surface of the first roller as the first roller is rolled over the surface of a disk to be cleaned.
    Type: Grant
    Filed: November 8, 1982
    Date of Patent: January 1, 1985
    Inventor: Stanley Taub