Patents by Inventor John A. Slotten

John A. Slotten 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).

  • Patent number: 5662574
    Abstract: A resilient pressure roller of the large type that is of unitary construction with a rigid core, a central body of rubber or synthetic rubber of one durometer and a thin outer shell of another durometer. The body is given a nonlinear longitudinal profile and the shell is given a profile different from that of the body. The differences in profiles of the body and shell, along with their different durometers sum to develop approximately uniform nip profiles along the nip so as to minimize hysteresis heating and degradation in the roller and thereby provide a roller of greatly extended life expectancy.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: September 2, 1997
    Inventor: John A. Slotten