Patents by Inventor Bengt Derehag

Bengt Derehag 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).

  • METHOD OF PRODUCING A ROTOR COMPONENT OR A STATOR COMPONENT
    Publication number: 20110056078
    Abstract: A method of producing a rotor component or a stator component includes the steps of providing a disc-shaped element with a plurality of radially projecting and circumferentially spaced blades, an intermediate ring with an inner surface adapted for contacting tips of the blades, and an external ring with an inner surface adapted for contacting an outer surface of the intermediate ring, moving the intermediate ring co-axially in relation to the disc-shaped element to an operative position in which it is located radially outside the blades, and moving the external ring co-axially in relation to the intermediate ring to an operative position in which it is located radially outside the intermediate ring.
    Type: Application
    Filed: September 12, 2007
    Publication date: March 10, 2011
    Inventors: Bengt Derehag, Staffan Brodin
  • Method and a device for manufacturing a stator component or rotor component
    Patent number: 6797912
    Abstract: Method and arrangement for manufacturing a disk-shaped or annular stator component or rotor component with a plurality of blades arranged one after another in a path extending around the component and a cover (15) arranged outside the blades in the radial direction and in contact therewith. According to the method, at least a portion (11) of a first set of channels (12) is spark-eroded simultaneously out of a disk-shaped or annular workpiece (2) intended for forming the component at a distance from the edge (14) of the workpiece in the radial direction, which channels (12) are intended to delimit the blades in the circumferential direction of the workpiece.
    Type: Grant
    Filed: September 12, 2003
    Date of Patent: September 28, 2004
    Assignee: Volvo Aero Corporation
    Inventors: Bengt Derehag, Alf Petersson
  • METHOD AND A DEVICE FOR MANUFACTURING A STATOR COMPONENT OR ROTOR COMPONENT
    Publication number: 20040112871
    Abstract: Method and arrangement for manufacturing a disk-shaped or annular stator component or rotor component with a plurality of blades arranged one after another in a path extending around the component and a cover (15) arranged outside the blades in the radial direction and in contact therewith. According to the method, at least a portion (11) of a first set of channels (12) is spark-eroded simultaneously out of a disk-shaped or annular workpiece (2) intended for forming the component at a distance from the edge (14) of the workpiece in the radial direction, which channels (12) are intended to delimit the blades in the circumferential direction of the workpiece.
    Type: Application
    Filed: September 12, 2003
    Publication date: June 17, 2004
    Applicant: VOLVO AERO CORPORATION
    Inventors: Bengt DEREHAG, Alf PETERSSON