Patents by Inventor Lennart F. Olsson

Lennart F. Olsson 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).

  • Apparatus for treatment of solid material
    Patent number: 5515775
    Abstract: An apparatus is provided that comprises a self-stacking spiral conveyor that traverses through a circulating atmosphere. The atmosphere is manipulated by one or more chambers having an open side adjacent to the perforated sides of the spiral conveyor. Additional control over the circulating atmosphere may be achieved by injection or ejection of gas into one or more chambers.
    Type: Grant
    Filed: May 25, 1994
    Date of Patent: May 14, 1996
    Assignee: Philip Morris Incorporated
    Inventors: John C. Crump, III, Eugene B. Fischer, Robert C. Wilson, Warren D. Winterson, Leif E. B. Jaxmar, Gustav M. Norberg, Lennart F. Olsson
  • Conveyor belt for treatment of particulate solid material
    Patent number: 5346057
    Abstract: An improved endless conveyer belt is provided which can carry minute particles of conveyed product such as are found in packed bed applications, without limiting the ability of the conveyor belt to articulate into a spiraling conveyor stack. The perforations in the foraminous bottom member of the conveyor belt can be dimensioned according to the size of conveyed products. The number and placement of the perforations can be chosen to alter gas flow characteristics of the belt.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: September 13, 1994
    Assignee: Philip Morris Incorporated
    Inventors: Eugene B. Fisher, Mark St. John North, Warren D. Winterson, Leif E. B. Jaxmar, Lennart F. Olsson, Nils S. Selander
  • Apparatus for treatment of solid material
    Patent number: 5335590
    Abstract: An apparatus is provided that comprises a self-stacking spiral conveyor that traverses through a circulating atmosphere. The atmosphere is manipulated by one or more chambers having an open side adjacent to the perforated sides of the spiral conveyor. Additional control over the circulating atmosphere may be achieved by injection or ejection of gas into one or more chambers.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: August 9, 1994
    Assignee: Philip Morris Incorporated
    Inventors: John C. Crump, III, Eugene B. Fischer, Robert C. Wilson, Warren D. Winterson, Leif E. B. Jaxmar, Gustav M. Norberg, Lennart F. Olsson
  • Belt conveyor system
    Patent number: 5183149
    Abstract: An endless conveyor belt of a belt conveyor system in a plant for air treatment of food products follows a helical path section preceded by a straight path section and followed by another straight path section. In the preceding straight path section, the conveyor belt remains collapsed and in the following straight path section, the conveyor belt remains expanded. At the transition between the preceding straight path section and the helical path section, the conveyor belt is expanded along the outer lateral edge of the belt. At the transition between the helical path section and the following straight path section, the conveyor belt is expanded along the inner lateral edge of the belt.
    Type: Grant
    Filed: September 11, 1991
    Date of Patent: February 2, 1993
    Assignee: Frigoscandia Food Process Systems AB
    Inventors: Michael J. Wierman, Lennart F. Olsson