Patents by Inventor John Louis Bellis

John Louis Bellis 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).

  • Automatic splice relief control
    Patent number: 4080888
    Abstract: A calender roll is arranged to automatically have the pressure relieved between a pair of pressure rolls when a splice is detected in a moving web. The splice in the web is detected a known distance upstream of the pressure rolls. A counter, related to web travel distance, is activated to cause the temporary relief in the pressure between the rolls as the splice travels therebetween, preventing any damage that would otherwise occur to the moving web and avoiding any production slowdown.
    Type: Grant
    Filed: September 1, 1976
    Date of Patent: March 28, 1978
    Assignee: USM Corporation
    Inventor: John Louis Bellis