Patents by Inventor David Hellstedt

David Hellstedt 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).

  • System for ventilating a vehicle cab and closet, further including closet drying means
    Patent number: 7410415
    Abstract: System for ventilating a vehicle cab (1) and a closet (3) for the drying, airing and storage of work clothing. The system is constituted by a fan in the closet (3) and the fan (9) extracts air from the cab (1) through the closet (3). Excess heat from the coolant circuit of the drive engine is utilized as a heat source in the drying of work clothing. Also, the invention can be advantageously used when the cab is occupied overnight.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: August 12, 2008
    Assignee: Volvo Lastvagnar AB
    Inventors: Matts Ronnlund, David Hellstedt
  • VENTILATED VEHICLE CAB
    Publication number: 20060113061
    Abstract: System for ventilating a vehicle cab (1) and a closet (3) for the drying, airing and storage of work clothing. The system is constituted by a fan in the closet (3) and the fan (9) extracts air from the cab (1) through the closet (3). Excess heat from the coolant circuit of the drive engine is utilized as a heat source in the drying of work clothing. Also, the invention can be advantageously used when the cab is occupied overnight.
    Type: Application
    Filed: August 17, 2005
    Publication date: June 1, 2006
    Applicant: VOLVO LASTVAGNAR AB
    Inventors: Mats RONNLUND, David Hellstedt