Eddy current braking system

Details Eddy current braking system Eddy current braking system

1992-08-19

1993-10-19

Crow, Stephen R.

Exercise devices

Involving user translation or physical simulation thereof

Bicycling

482 5, 482903, A63B 2206, A63B 21005

Patent

active

052540618

ABSTRACT:
An improved eddy current braking system for fly wheel braked exercise equipment includes the use of a flat aluminum disc and electromagnets to either side of the disc adjacent to the periphery thereof, with the electromagnets containing multiple pole pieces to multiply the torque so as to reduce heating and power consumption. The utilization of aluminum achieves a flat torque versus speed characteristic vis-a-vis copper discs over the normal operating speed range. Additionally, the utilization of aluminum prevents the warpage associated with copper.

REFERENCES:
patent: 2208415 (1940-07-01), Franck et al.
patent: 4084810 (1978-04-01), Forsman
patent: 4470597 (1984-09-01), McFee
patent: 4495560 (1985-01-01), Sugimoto
patent: 4752066 (1988-06-01), Honsayama
patent: 4775145 (1988-10-01), Tsuyama
patent: 4826150 (1989-05-01), Minoura
patent: 4838544 (1989-06-01), Sasakawa et al.
patent: 5031900 (1991-07-01), Leask

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