Patents by Inventor Nils Ivar Landgren

Nils Ivar Landgren 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).

  • Rotating electric machine with coil supports
    Patent number: 6646363
    Abstract: The invention relates to a rotating electric machine comprising a stator (4) provided with windings drawn through slots in the stator, and a rotor (1) having a central axis (2) and poles (5, 6) in the form of pole pieces (8, 9) provided with windings and forming solenoids, pole gaps (13) being arranged between the poles. The machine also comprises coil supports (15, 16) in said pole gaps in order to support the solenoid windings (10, 11). It is characterized in that the coil supports (15, 16) are arranged in pairs and that each coil supports (15, 16) is shaped so that it supports only a part of the solenoid windings (10, 11) of the two adjacent poles (5, 6).
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: November 11, 2003
    Assignee: ABB AB
    Inventors: Gunnar Kylander, Arne Edman, Mats Leijon, Nils-Ivar Landgren
  • ROTATING ELECTRIC MACHINE WITH COIL SUPPORTS
    Publication number: 20020125785
    Abstract: The invention relates to a rotating electric machine comprising a stator (4) provided with windings drawn through slots in the stator, and a rotor (1) having a central axis (2) and poles (5, 6) in the form of pole pieces (8, 9) provided with windings and forming solenoids, pole gaps (13) being arranged between the poles. The machine also comprises coil supports (15, 16) in said pole gaps in order to support the solenoid windings (10, 11). It is characterized in that the coil supports (15, 16) are arranged in pairs and that each coil support (15, 16) is shaped so that it supports only a part of the solenoid windings (10, 11) of the two adjacent poles (5, 6).
    Type: Application
    Filed: October 4, 1999
    Publication date: September 12, 2002
    Inventors: GUNNAR KYLANDER, ARNE EDMAN, MATS LEIJON, NILS-IVAR LANDGREN
  • Method of manufacturing bodies by pressure sintering of powder
    Patent number: 3986870
    Abstract: In manufacturing products by enclosing a body of powder in a capsule and compacting it into a solid body by subjecting it to high temperature and high all-sided pressure, a capsule is used which has a connection sleeve in one wall with a through opening for connection of a capsule to the vacuum pump. An arrangement is provided for exerting an external outward pressure on this sleeve, so as to lift the wall away from the surface of the powder within the container, so that a large surface area is provided to permit easier release of gases when the capsule is subjected to vacuum. Thereafter, a plug is inserted in the opening of the connection sleeve, so as to seal the opening.
    Type: Grant
    Filed: December 3, 1973
    Date of Patent: October 19, 1976
    Assignee: Allmanna Svenska Elektriska Aktiebolaget
    Inventors: Sten Henrik Danieli, Nils Ivar Landgren, Arne Sundstrand