Patent ID: 6960846
Filing Date: 2005-11-01
Classification: G03F,H02K

Abstract:
1. A linear pulse motor comprising a primary member obtained by winding a coil on a primary magnetic portion that connects a plurality of projecting primary pole teeth lined up in one direction, and a secondary member obtained by connecting a plurality of projecting secondary pole teeth lined up in one direction at an air gap from said primary pole teeth with a secondary magnetic portion, said coil being energized to move said primary and secondary members relative to each other in one direction, wherein a first primary pole tooth, a second primary pole tooth located to be relatively displaced from said first primary pole tooth by a pitch P in one direction, a first primary magnetic portion for connecting said first and second primary pole teeth to each other, and a coil wound on said first primary magnetic portion make up an excitation unit, said primary member having a group of excitation units including n excitation units arranged to be relatively displaced from each other by P/n in one direction where n is an integer of not less than 3, said primary and secondary members are supported to be movable relative to each other in one direction, and said n excitation units are connected to each other with nonmagnetic portions.