A linear motor is provided which includes members for engaging a magnet rail to prevent bending of the magnet rail. Such members may include a wheel or sliding block, for example. The members exert a force proximate an upper edge of the magnet rail to counter potential bending of the magnet rail during...http://www.google.ca/patents/US6891285?utm_source=gb-gplus-sharePatent US6891285 - Linear motor with magnet rail support, end effect cogging reduction, and segmented armature
