Patents by Inventor Rolf Jonsson

Rolf Jonsson 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).

  • Publication number: 20090314447
    Abstract: A papermaking machine is provided for manufacturing a paper web, comprising a forming section having two clothings, a dewatering section comprising at least one paper manufacturing clothing, and a plurality of rotary rolls comprising guide rolls, each guide roll having two opposing flanges interconnected by a shell, each clothing running about some of the rotary rolls in a loop, wherein said papermaking machine is a tissue papermaking machine, at least one of the guide rolls is a lightweight guide roll supporting at least one of the clothings, and at least one of the shell and the flanges of said lightweight guide roll comprises a material with a density less than steel, wherein a weight of the lightweight guide roll is at least 10% less than a weight of a steel guide roll having the same dimensions and mechanical parameters. Associated devices and methods are also provided.
    Type: Application
    Filed: November 16, 2006
    Publication date: December 24, 2009
    Inventors: Krister Aspegren, Rune Skogsberg, Rolf Jonsson
  • Patent number: 7207920
    Abstract: A control device for controlling a V-belt CVT (Continuously Variable Transmission) which is connectible to a vehicle engine and comprises a primary variator and a secondary variator. The control device has a plurality of sensors which generate electronic measured values, comprising an engine speed sensor which generates a first measured value, and a power sensor which generates a second measured value which is related to the torque of an output drive shaft connected to the secondary variator. The control device further comprises an electronic control unit which is adapted to control the V-belt CVT based on said measured values. A V-belt CVT having a control device as stated above, and a method for controlling such a V-belt CVT are also provided.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: April 24, 2007
    Assignee: Pivario AB
    Inventors: John Jonsson, Rolf Jonsson
  • Publication number: 20050090367
    Abstract: A control device for controlling a V-belt CVT (Continuously Variable Transmission) which is connectible to a vehicle engine and comprises a primary variator and a secondary variator. The control device has a plurality of sensors which generate electronic measured values, comprising an engine speed sensor which generates a first measured value, and a power sensor which generates a second measured value which is related to the torque of an output drive shaft connected to the secondary variator. The control device further comprises an electronic control unit which is adapted to control the V-belt CVT based on said measured values. A V-belt CVT having a control device as stated above, and a method for controlling such a V-belt CVT are also provided.
    Type: Application
    Filed: October 1, 2004
    Publication date: April 28, 2005
    Inventors: John Jonsson, Rolf Jonsson
  • Patent number: 5630362
    Abstract: A refuse compacting device has dewatering capability and in some cases refuse transporting capability wherein refuse is fed into an outer cylinder in which an axially elongate piston is arranged. The piston is capable of reciprocating motion by a drive motor and threadable piston rod and nut arrangement, whereby refuse is forced towards an outlet of the cylinder. The cylinder is provided with apertures for allowing water to escape from the wet refuse as it is compacted against a conically shaped throttling member at the outlet of the cylinder.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: May 20, 1997
    Assignee: Roto-Sieve AB
    Inventor: Rolf Jonsson