Rotary transformer

Electrical generator or motor structure – Dynamoelectric – Rotary

Reexamination Certificate

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Details

C310S112000, C310S114000

Reexamination Certificate

active

06995485

ABSTRACT:
A rotation transmitter for rotor-excited electrical machines, in particular for synchronous generators in motor vehicles, is disclosed, which has a primary part (14) with a primary core (17) comprised of a magnetically conductive material and a primary winding (18) inserted into it, and has a coaxial secondary part (15) that can rotate in relation to the primary part (14) and has a secondary core (20) comprised of magnetically conductive material and a secondary winding (21). In order to achieve a small diameter design and in order to control the radial forces produced in the rotating secondary core (20), the primary and secondary parts (14, 15) are disposed next to each other in the axial direction and the primary and secondary cores (17, 20) have flat end faces (171, 201) oriented toward each other, which enclose an axial working air gap (23) between them

REFERENCES:
patent: 4612486 (1986-09-01), Ban et al.
patent: 5519275 (1996-05-01), Scott et al.
patent: 5572178 (1996-11-01), Becker et al.
patent: 5770909 (1998-06-01), Rosen et al.
patent: 2 122 520 (1971-11-01), None
patent: 23 47 656 (1974-04-01), None
patent: 100 20 949 (2001-02-01), None
patent: 0 688 028 (1995-12-01), None
patent: 0 860 936 (1998-08-01), None
patent: 2 775 383 (1999-08-01), None
Patent Abstracts of Japan vol. 010, No. 306 (E-446) Oct. 17, 1986 & JP 61 120409 A Jun. 7, 1986.

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