Patents by Inventor Uno Roland Sjostrand

Uno Roland Sjostrand 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).

  • Arrangement for the reading of photocell markings on a material web provided with decoration
    Patent number: 4081944
    Abstract: An apparatus for reading photocell markings applied at equal intervals on the decorated side of a material web run through a packing machine for the continuous manufacture of separatable packages provided with transverse crease lines in which a cylindrical monitoring element which contacts and is rotated by the crease lines functions to periodically actuate an electrical switch which in turn activates a photocell located close to the web when a photocell marking is calculated to pass.
    Type: Grant
    Filed: December 3, 1976
    Date of Patent: April 4, 1978
    Assignee: AB Ziristor
    Inventor: Uno Roland Sjostrand
  • Method and an arrangement for the purification of air in packing machines
    Patent number: 4055035
    Abstract: Method and apparatus to extract sterilized air and vapor from a packaging machine and the sterilizing agent is separated from the sterilized air and the sterilized air is recirculated to the packaging machine for further use.
    Type: Grant
    Filed: March 25, 1976
    Date of Patent: October 25, 1977
    Assignee: AB Ziristor
    Inventors: Uno Roland Sjostrand, Goran Karl Nils Johansson