Cylindrical capacitive tachogenerator
AssigneeU.S. Philips Corporation
InventorGunter Marsoner
Life of this patent
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Abstract
A cylindrical capacitive tachometer generator having a rotor and a stator, and a cylindrical air gap between facing cylindrical surfaces of the rotor and stator, each provided with equal numbers of teeth uniformly distributed over the circumference and spaced from each other by tooth gaps, the effective capacitive width of a tooth on one cylinder surface being smaller than the effective capacitive width of a tooth or of a tooth gap on the other cylinder surface.
Claims4
A cylindrical capacitive tachogenerator comprising a rotor part and a stator part, one of said parts being arranged as an inner cylinder and the other part being a hollow outer cylinder coaxially disposed about the one part and defining an air gap between the cylindrical surfaces of said cylinders, said cylinders each having an equal number of respective teeth spaced from each other by tooth gaps and uniformly distributed around the circumference, the ratio of the effective capacitive width of a tooth at its free end to the effective capacitive width of an adjacent tooth gap at the same circumferential level having a predetermined value, characterized in that the effective capacitive width of a tooth on one cylindrical surface is smaller than each of the effective capacitive widths of a tooth and of a tooth gap on the other cylinder surface.
Dependencies are inferred from the claim text.