Pulse generator with asymmetrical multi-pole magnet
AssigneeVeeder Industries Inc.
InventorWalter J. Nowak
Life of this patent
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Abstract
A pulse generator is comprised of an asymmetrical magnet assembly and a Hall sensor operative for generating an electrical signal upon the application of a magnetic field thereto. The Hall sensor and magnet assembly are mounted for relative movement for the generation of a train of electrical signals in response to relative displacement therebetween. The asymmetrical multi-pole magnets in the magnet assembly have a plurality of symmetrically spaced pole pairs with each pole pair including a magnetic pole of predominant polarity occupying a substantially greater area than the pole of opposite polarity. The predominant pole is sufficiently strong to provide a salient magnetic field of essentially single polarity. a magnetizing head also is provided for producing the asymmetrical pole character of the magnet.
Claims8
An asymmetrical magnet well suited for use in a rotary pulse generator comprising a multi-pole magnetic disc wherein the magnetic poles of the disc consist essentially of a plurality of pole pairs symmetrically spaced about the circumference of the disc with each pole pair including a predominant magnetic pole of one polarity and a subservient magnetic pole of the opposite polarity, the magnetic poles being oriented parallel to the axis of the disc.
A multi-pole magnet comprising a planar member having magnetic poles consisting essentially of a plurality of symmetrically spaced pole pairs, each pole pair including a predominant magnetic pole of one polarity and a subservient magnetic pole of the opposite polarity to thereby provide an asymmetrical relationship between the poles of opposite polarity and a salient magnetic field having an effective single polarity, the magnetic poles being oriented perpendicular to the plane of the magnet.
Dependencies are inferred from the claim text.