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US 6,271,741 B1Granted
Rotary inductive coupling
AssigneeEaton Corporation
InventorJeffrey L. Sajna
Life of this patent
Estimating the term…
Abstract
A rotary transformer having a stator and rotor each formed by winding a coil on a non-magnetic bobbin and overmolding the bobbin and coil with magnetically permeable particulate material dispersed in a non-magnetic medium preferably selected from the group consisting of thermoplastic, thermosetting plastic and thermoplastic elastomer.
Claims8
A rotary inductive electrical coupling comprising:
- (a) a first bobbin formed of non-magnetic material;
- (b) a first coil of electrically conductive material wound on said first bobbin;
- (c) a stator formed of magnetically permeable material dispersed in a non-magnetic medium molded over said first bobbin and first coil;
- (d) a second bobbin formed of non-magnetic material having a second coil of electrically conductive material wound thereon;
- and,
- (e) a rotor formed of magnetically permeable material dispersed in a non-magnetic medium molded over said second bobbin and second coil, wherein said rotor and stator have an annular configuration and are disposed in axially spaced side-by-side arrangement with respect to the axis of said first and second coil with the rotor rotatable with respect to the stator.
3 more elements
Dependencies are inferred from the claim text.