Patents by Inventor Halvar Sjunnesson

Halvar Sjunnesson 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).

  • Work machine having a hydraulic liquid cooling and heating system
    Patent number: 6758266
    Abstract: A work machine, such as a wheeled loader or dumper, has a cooling and heating system comprising a main line (2) arranged to contain a fluid, a first heat exchanger (4) which is connected to the main line (2), and a charge-air cooler (8) for cooling compressed charge air for an internal combustion engine (12) arranged in the machine, which charge-air cooler (8) is connected to the main line (2). A second heat exchanger (10) is connected to the main line (2) downstream of the charge-air cooler (8), to which second heat exchanger (10) a hydraulic liquid line (14) is connected, so that heat can be transferred between the fluid in the main line (2) and the hydraulic liquid in the hydraulic liquid line (14).
    Type: Grant
    Filed: December 7, 2000
    Date of Patent: July 6, 2004
    Assignee: Volvo Wheel Loader AB
    Inventor: Halvar Sjunnesson