ROTOR
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Issued Date -
Jan 23, 2014
app pub date -
Mar 29, 2012
filing date -
Apr 8, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A rotor (2), for an electric motor, includes a plurality of laminated rotor sheets (4) arranged in layers and each provided with slots (6, 10), a number of permanent magnets (8) arranged within magnet slots (10) in the laminated rotor sheets (4). An end area (16) of each magnet slot (10) is a magnet free area. The rotor (2) includes a plurality of rotor bars (14) arranged in rotor bar slots (6) and a rotor sheet band (22) provided between the end area (16) and the adjacent rotor bar slot (6). For each rotor sheet (4) the part of the end area (16) that faces an adjacent rotor bar slot (6) and/or the part of a rotor bar slot (6) that faces an adjacent end area (16) includes a side (18, 20) or a section of the side (18, 20) where the distance to the center of the rotor sheet (4) is essentially constant.
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