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US 4,232,922 AGranted
Signal power coupling to rotary shaft
OwnerHorace A. Teass, Jr.inventor
Life of this patent
Estimating the term…
Abstract
A system for coupling electrical power to a rotary shaft without mechanically contacting the shaft includes a stationary transformer primary core positioned adjacent but spaced from the shaft so that the shaft forms part of a complete magnetic flex path for the core, and an insulated conductor mounted directly upon the shaft in the form of a winding which is positioned to be inductively associated with the transformer primary.
Claims3
A system for coupling electrical power to a load mounted on a rotary shaft without mechanically contacting the shaft comprising:
- a rotary shaft;
- a transformer primary having a core positioned adjacent but spaced apart from said shaft by air gaps whereby said core, said shaft and said air gaps form a complete magnetic circuit;
- and
- an insulated conductor abutting and wrapped around said shaft to form a winding thereon whereby said winding rotates with said shaft and is positioned to be inductively associated with said transformer primary.
1 more element
Dependencies are inferred from the claim text.