Magnetic field generator for MRI, method for assembling the same, and method for assembling a magnet unit for the same
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United States of America Patent
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Nov 18, 2003
Grant Date -
Aug 9, 2001
app pub date -
Mar 23, 2001
filing date -
Aug 6, 1998
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A plate yoke has an upper surface formed with a projection and a guiding rail. A new magnet block is transported by sliding on the upper surface of the plate yoke, and is bonded side by side with the projection or a magnet block which is already fixed. During the above operation, a magnetic member is held above the plate yoke. Preferably, the new magnet block is transported toward a corner portion, with side surfaces of the magnet block held parallel to a side surface of the projection and a side surface of the guiding rail respectively. When the magnet unit and the column yoke is connected, the column yoke or the magnet unit is lowered so that a guiding rod attached to an end face of the column yoke is inserted into a hole formed in the magnetic unit. Further, the column yoke is guided by a guiding member disposed between a permanent magnet on the plate yoke and a position where the column yoke is to be connected on the plate yoke.
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