Rotary signal generator
AssigneeFuji Electric Co., Ltd.
InventorsKeiichi Onodera, Hiroshi Yamaura
Life of this patent
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Abstract
A non-contact signal generator which is adapted for the conduction signal source for the semi-conductor ignition system of so-called current-breaking type or induced-energy accumulating type and which is of the permanent-magnet-energization, variable magnetic reluctance type with one or more than two stationary pole number for generating one conduction signal for each pole in each rotation is disclosed.
Claims4
A rotary signal generator comprising a rotary magnetic pole member which is provided with a single protruded end located at the longest radial distance and with a single minimum radius portion located at the minimum radial distance and a plurality of stationary magnetic pole members uniformly spaced about said rotary magnetic pole member said protruded end and minimum radius portion being connected with a curved surface, each of said stationary magnetic pole members being energized by a permanent magnet and provided with a pick-up coil which generates an output signal when the protruded end of the rotary magnetic pole member traverses the end of the stationary pole, the angle formed by the protruded end and the minimum radius portion in the direction of rotation being not more than 120.degree..
Dependencies are inferred from the claim text.