Patents by Inventor Leif Gustavsson

Leif Gustavsson 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).

  • Patent number: 10757143
    Abstract: A method of notifying one or more network nodes in a communications network, comprising an Internet Protocol Multimedia Subsystem, IMS, of a change in RAT used by a user equipment for a communications session, the method comprising at a CSCF prior to set-up of the communications session, indicating by the CSCF to a PCRF that the CSCF requires RAT change notifications for the user equipment, providing a capability indication by the CSCF to the one or more network nodes that the CSCF supports RAT change notifications and receiving from at least one of the one or more network nodes a requirement indication, which indicates that the network node requires RAT change notifications. The method further comprises on receipt of a RAT change notification by the CSCF propagating the RAT change notification to each of the nodes from which a requirement indication has been received.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: August 25, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Fredrik Tystad, Jan Dahl, Leif Gustavsson, Jan Holm
  • Publication number: 20190052679
    Abstract: A method of notifying one or more network nodes in a communications network, comprising an Internet Protocol Multimedia Subsystem, IMS, of a change in RAT used by a user equipment for a communications session, the method comprising at a CSCF prior to set-up of the communications session, indicating by the CSCF to a PCRF that the CSCF requires RAT change notifications for the user equipment, providing a capability indication by the CSCF to the one or more network nodes that the CSCF supports RAT change notifications and receiving from at least one of the one or more network nodes a requirement indication, which indicates that the network node requires RAT change notifications. The method further comprises on receipt of a RAT change notification by the CSCF propagating the RAT change notification to each of the nodes from which a requirement indication has been received.
    Type: Application
    Filed: October 8, 2015
    Publication date: February 14, 2019
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Fredrik TYSTAD, Jan DAHL, Leif GUSTAVSSON, Jan HOLM
  • Patent number: 8816841
    Abstract: The present invention relates to a warning system mounted on a vehicle comprising detection means for detecting an object, and signalling means connected to said detection means, wherein said detection means are arranged to remotely detect an object in the vicinity of the vehicle and that said detection means is connected to said signalling means to automatically emit a signal that is detectable from at least one other side of the vehicle than the one where said object is present, and wherein said detection means (4) are arranged to avoid detecting objects lower than 0.5 m, preferably lower than 0.25 m from the ground.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: August 26, 2014
    Assignee: Binar Aktiebolag
    Inventor: Leif Gustavsson
  • Publication number: 20110163868
    Abstract: The present invention relates to a warning system mounted on a vehicle comprising detection means for detecting an object, and signalling means connected to said detection means, wherein said detection means are arranged to remotely detect an object in the vicinity of the vehicle and that said detection means is connected to said signalling means to automatically emit a signal that is detectable from at least one other side of the vehicle than the one where said object is present, and wherein said detection means (4) are arranged to avoid detecting objects lower than 0.5 m, preferably lower than 0.25 m from the ground.
    Type: Application
    Filed: September 25, 2009
    Publication date: July 7, 2011
    Applicant: BINAR AKTIEBOLAG
    Inventor: Leif Gustavsson
  • Publication number: 20080053083
    Abstract: A vehicle (1) utilizes a hydrostatic transmission arrangement (10, 11, 12, 13). This transmits drive force (F) from at least one first wheel (2) to at least one second wheel (3). The arrangement comprises a hydrostatic pump, which can be driven with the first wheel, and a hydrostatic drive assembly, connected to the pump by a hydrostatic line system, for driving the second wheel (3). Additionally included are one or more members (19, 20) which wholly or partially bridge or disconnect the drive assembly. The said members are arranged to directly or indirectly detect or influence driving situations for the vehicle, for example the temperature in the hydrostatic medium, and, if change should occur, to cause or bring about the full or partial bridging or disconnection of the assembly. The functioning of the vehicle, which can thereby be made safer and developed with relatively less complicated means and can utilize, for example, conventional connecting hoses and associated connecting members, is thus improved.
    Type: Application
    Filed: December 2, 2004
    Publication date: March 6, 2008
    Inventor: Leif Gustavsson
  • Patent number: 6277315
    Abstract: A method for manufacturing at leat two different types of sealing rings, each sealing ring comprising at least two annular elements which are bound to each other and with regard their hardness are of different kinds. An annular element (1) of a first kind is manufactured with one and the same design irrespectively of the type of the sealing ring which is to be manufactured and is provided with at least two separate binding surfaces (20, 22) for binding to element or elements (34, 50) of the second kind. The element or elements (34, 50) of the second kind is or are manufactured with a design adapted with regard to the desired type of sealing ring and is or are bound to one of or each one of the binding surfaces (20, 22) provided at the element of the first kind. The invention also relates to an annular element to be used for conducting the method.
    Type: Grant
    Filed: August 4, 1995
    Date of Patent: August 21, 2001
    Inventors: Göran Hållstedt, Leif Gustavsson, Börje Hellström, Johnny Motes