中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

42 records (took 0.021 seconds)

    ROLL ARRANGEMENT
    23.
    发明专利
    ROLL ARRANGEMENT 未知

    公开(公告)号：CA2815715A1

    公开(公告)日：2012-05-03

    申请号：CA2815715

    申请日：2011-10-24

    Applicant: ABB AB

    Inventor： INGVARSSON KJELL ,  LIFVENBORG ULF ,  JONSSON LARS ,  KIERSGAARD JESPER ,  GREFVE KENNETH ,  JOHANSSON JOAR

    IPC: B65H23/04

    Abstract: It is presented a roll arrangement (1) for determining a web tension profile of a web (W). The roll arrangement (1) comprises a roll (2) having a peripheral surface (3) for guiding the web (W), which peripheral surface (3) is provided with a plurality of openings (7), and a plurality of sensor arrangements (8; 8'). Each of the plurality of openings (7) are arranged to receive one sensor arrangement (8; 8') of the plurality of sensor arrangements (8; 8') to thereby sense forces applied by the web (W) to the roll (2). The roll arrangement (1) is adapted to suspend the sensor arrangements (6) in the respective opening (7).

    24.
    发明专利
    未知

    公开(公告)号：AT518235T

    公开(公告)日：2011-08-15

    申请号：AT01938906

    申请日：2001-06-07

    Applicant: ABB AB

    Inventor： LARSSON PER ,  BACKMAN MAGNUS ,  JONSSON LARS

    IPC: H01H9/56 ,  H01H33/59 ,  H01H33/00

    Abstract: An apparatus ( 14 ) for detecting a zero-crossing of an alternating current after occurrence of a fault in a current path ( 2 ) for determining a suitable time for opening an electric switching device ( 2 ) arranged in the current path for breaking the current in the current path comprises members ( 15 ) adapted to detect the current in the current path. An arrangement ( 19 ) is adapted to calculate the dc-level of the current and the decay of the dc-level with time on the basis of values of the alternating current detected and also predict the time for a future zero-crossing of the alternating current on the basis of at least current values obtained through said current detection, the dc-level calculated, the dc-decay calculated and information about the period time of the alternating current.

    29.
    发明专利
    未知

    公开(公告)号：SE516437C2

    公开(公告)日：2002-01-15

    申请号：SE0002125

    申请日：2000-06-07

    Applicant: ABB AB

    Inventor： LARSSON PER ,  BACKMAN MAGNUS ,  JONSSON LARS

    IPC: H01H33/59 ,  H01H9/56 ,  H01H33/00

    Abstract: An apparatus ( 14 ) for detecting a zero-crossing of an alternating current after occurrence of a fault in a current path ( 2 ) for determining a suitable time for opening an electric switching device ( 2 ) arranged in the current path for breaking the current in the current path comprises members ( 15 ) adapted to detect the current in the current path. An arrangement ( 19 ) is adapted to calculate the dc-level of the current and the decay of the dc-level with time on the basis of values of the alternating current detected and also predict the time for a future zero-crossing of the alternating current on the basis of at least current values obtained through said current detection, the dc-level calculated, the dc-decay calculated and information about the period time of the alternating current.

Patent Agency Ranking