Patents by Inventor Harri V/a/ h/a/ talo

Harri V/a/ h/a/ talo 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).

  • System for controlling the nip pressure profile in a roll press
    Patent number: 4791863
    Abstract: Method and apparatus for controlling the transverse distribution of pressure applied to a web passing through a nip formed between a pressure zone-adjustable device having a first number (K) of separately adjustable pressure zones, including those for roll loading cylinders, if any, and a counter-member. A desired linear load profile comprising a second number (N) of setting zone set values for a corresponding number (N) of setting zones is provided, the second number (N) of the setting zones being substantially greater than the first number (K) of actual pressure zones. The second number (N) of setting zone set values are input to a zone conversion unit which is programmed with a mathematical model of the nip and are converted to a first number (K) of pressure zone set values so than an actual transverse distribution of pressure applied to the web is obtained having a minimal deviation from the setting zone set value distribution.
    Type: Grant
    Filed: August 14, 1987
    Date of Patent: December 20, 1988
    Assignee: Valmet Paper Machinery Inc.
    Inventor: Harri V/a/ h/a/ talo