Patents by Inventor Gunnar Malmberg

Gunnar Malmberg 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: 8861200
    Abstract: A module for a telecommunications subrack as well as a telecommunication subrack are disclosed. The module is a horizontal plug in unit including a power part that includes power filtering functions for securing power feed to a backplane of the subrack as well as to a number of fans also arranged on the module for cooling of the subrack. The module also includes connectors arranged in the rear of the module for connecting the module to the backplane as well as connectors arranged in the front of the module for accommodating power cables. The telecommunications subrack includes a cage configured to accommodate cards, an air intake with filter and two or more removably mounted modules. Each of these modules includes a power part that includes power filtering functions for securing power feed for the subrack, input connectors arranged in the front of the module for accommodating power cables, fans for cooling of the subrack, and output connectors for connecting the module to a backplane of the subrack.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: October 14, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventor: Gunnar Malmberg
  • Publication number: 20110286176
    Abstract: A module for a telecommunications subrack as well as a telecommunication subrack are disclosed. The module is a horizontal plug in unit including a power part that includes power filtering functions for securing power feed to a backplane of the subrack as well as to a number of fans also arranged on the module for cooling of the subrack. The module also includes connectors arranged in the rear of the module for connecting the module to the backplane as well as connectors arranged in the front of the module for accommodating power cables. The telecommunications subrack includes a cage configured to accommodate cards, an air intake with filter and two or more removably mounted modules. Each of these modules includes a power part that includes power filtering functions for securing power feed for the subrack, input connectors arranged in the front of the module for accommodating power cables, fans for cooling of the subrack, and output connectors for connecting the module to a backplane of the subrack.
    Type: Application
    Filed: December 23, 2008
    Publication date: November 24, 2011
    Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventor: Gunnar Malmberg
  • Patent number: 7583504
    Abstract: A method and apparatus for cooling an electronic application having at least one heat-generating electronic component mounted on a circuit board. A heat transferring heat sink is attached to the circuit board in thermal contact with one heat generating electronic component by first being statically fixed to the circuit board in a stationary position at a specified height above the circuit board, and then by resiliently biasing the component against the heat sink.
    Type: Grant
    Filed: November 11, 2005
    Date of Patent: September 1, 2009
    Assignee: Telefonaktiebolaget L M Ericsson (PUBL)
    Inventors: Goran Aberg, Karl Gunnar Malmberg
  • Publication number: 20080266808
    Abstract: A method and apparatus for cooling an electronic application having at least one heat-generating electronic component mounted on a circuit board. A heat transferring heat sink is attached to the circuit board in thermal contact with one heat generating electronic component by first being statically fixed to the circuit board in a stationary position at a specified height above the circuit board, and then by resiliently biasing the component against the heat sink.
    Type: Application
    Filed: November 11, 2005
    Publication date: October 30, 2008
    Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Goren Aberg, Karl Gunnar Malmberg
  • Patent number: 6780043
    Abstract: The invention relates to a guide and support structure (1) that in addition to providing a secure and stable guide support for the plug-in unit and good electric contact properties enhances the removal of heat from the plug-in unit. This is achieved by means of a guide and support structure having an upper web forming a guide channel for a plug-in unit and being connected to a base of the structure through side walls of the structure. The base is at least partially open in order to allow air flow through the interior of the elongated profile. By virtue of such a configuration blockage of a cooling-air flow will be significantly reduced. Such a reduced blockage of cooling-air flow will in turn enhance the cooling of plug-in units and will require less powerful fans for producing the cooling-air flow.
    Type: Grant
    Filed: June 11, 2003
    Date of Patent: August 24, 2004
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Karl Gunnar Malmberg
  • Publication number: 20040048517
    Abstract: The invention relates to a guide and support structure (1) that in addition to providing a secure and stable guide support for the plug-in unit and good electric contact properties enhances the removal of heat from the plug-in unit. This is achieved by means of a guide and support structure having an upper web forming a guide channel for a plug-in unit and being connected to a base of the structure through side walls of the structure. The base is at least partially open in order to allow air flow through the interior of the elongated profile. By virtue of such a configuration blockage of a cooling-air flow will be significantly reduced. Such a reduced blockage of cooling-air flow will in turn enhance the cooling of plug-in units and will require less powerful fans for producing the cooling-air flow.
    Type: Application
    Filed: June 11, 2003
    Publication date: March 11, 2004
    Inventor: Karl Gunnar Malmberg
  • Patent number: 4317324
    Abstract: The invention relates to a system for motor-driven ride-on lawn mowers of the type where the cutting assembly is placed in front of the front axle, in which the front wheels are adapted as driving and braking wheels and the rear wheels as steering wheels. The new feature is that the brake mechanism acting upon the front wheels is provided with a modulation apparatus which, independently of the power exerted by the driver on the brake pedal or the like, prevents the braking power acting upon the wheels from reaching the amount where the wheels would be locked.
    Type: Grant
    Filed: June 27, 1980
    Date of Patent: March 2, 1982
    Assignee: Stiga AB
    Inventors: Gunnar Malmberg, Roger Andersson, Kjell Pettersson
  • Patent number: D271020
    Type: Grant
    Filed: December 19, 1979
    Date of Patent: October 18, 1983
    Assignee: Stiga AB
    Inventors: Gunnar A. Malmberg, Roger S. I. Andersson, Kjell A. Pettersson