Coated rotor for eddy current type retarder

Details Coated rotor for eddy current type retarder Coated rotor for eddy current type retarder

1990-06-19

1991-09-03

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

188159, 188218R, 427431, 310 45, H02K 712, H02K 4904, B32B 1501

Patent

active

050457390

ABSTRACT:
A rotor for an eddy current type retarder produces a brake force by producing eddy current using magnets mounted on a stationary member of the retarder. The rotor is mounted on a rotatable shaft and faces the magnets. The base member is made from a material containing steel. A thin film is formed on that face of the base member which faces the magnets. The film is made from a material containing rust-preventative material. A plurality of fins are formed on the base member by casting, using a material of good castability, with the base member as an insert. The rotor can be manufactured inexpensively and has the same characteristics as a rotor made from low-carbon-made steel.

REFERENCES:
patent: 3583533 (1971-06-01), Jones, Jr.
patent: 3749955 (1973-07-01), Fetzer
patent: 4545117 (1985-10-01), Okamoto
patent: 4624895 (1986-11-01), Nickola
patent: 4876471 (1989-10-01), Lacour
patent: 4937483 (1990-06-01), Matsui et al.
patent: 4943748 (1990-07-01), Shiozawa

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