Electromagnetic brake device for a sports training apparatus

Details Electromagnetic brake device for a sports training apparatus Electromagnetic brake device for a sports training apparatus

1986-09-26

1987-12-15

Wong, Peter S.

Electrical generator or motor structure

Dynamoelectric

Rotary

272 73, 310 67R, 310 93, 310211, 188164, A63B 6916

Patent

active

047135670

ABSTRACT:
An electromagnetic brake device for a sports training apparatus, especially an ergometer, includes a stator, and a rotor rotatable in relation to the stator about a rotation axis. The stator and the rotor each have multi-pole iron circuits which together form a magnetic flux circuit, one of the iron circuits having magnetic remanence properties. With the iron circuits, there are associated windings of which the winding allocated to the magnetically remanent iron circuit is formed as field winding and the other winding is formed as generator winding. The field winding is connected through a slip ring arrangement with the generator winding. With the iron circuit of the generator winding, there is associated a short-circuit winding. The size amplitude of the current fed to the field winding from the generator winding is adjustable by a control circuit. In this way, the electromagnetic brake moment of the brake device can be adjusted without wear.

REFERENCES:
patent: 994381 (1911-06-01), Fynn
patent: 1400047 (1921-12-01), Garcelon
patent: 2784591 (1985-07-01), Shoor
patent: 3164736 (1965-01-01), Sleeter
patent: 3256454 (1966-06-01), Redwood, Sr.
patent: 3375713 (1965-06-01), Impellizzeri
patent: 3445694 (1969-05-01), Campbell et al.
patent: 3511097 (1970-05-01), Corwin
patent: 4084810 (1978-04-01), Forsman
patent: 4546280 (1985-10-01), Pfluger

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