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US 2008/0185926 A1Published application
Self-Disengaging Fan For an Elecromagnetic Retarder
AssigneeTelma
InventorsBruno Dessirier, Stephane Hailly
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AssigneeTelma
InventorsBruno Dessirier, Stephane Hailly
Estimating the term…
The invention relates to a self-disengaging embodiment for a fan in an electromagnetic retarder. The retarder comprises a rotating shaft, a rotor rotationally fixed to the rotating shaft, induction coils, arranged in a crown on the rotor, a generator with a rotor mounted on one end of the rotating shaft and supplying the induction coils and a fan to circulate a cooling gas around the induction coils. The fan is fitted to freely rotate about the rotating shaft and is provided with means forming an armature which may be exposed to an electromagnetic field created by the induction coils and causing the fan to rotate.
A disengageable arrangement of a fan in an electromagnetic retarder, the retarder comprising a rotating shaft, a rotor rotationally integral with the rotating shaft, induction coils disposed in a ring on the rotor, a generator with a rotor mounted on one end of the rotating shaft and supplying the induction coils, and a fan for circulating a gaseous cooling fluid on the induction coils, the arrangement wherein the fan is mounted so as to rotate freely on the rotating shaft and is provided with means forming an armature able to be exposed to an electromagnetic field generated by the induction coils and driving the fan in rotation.
An electromagnetic retarder comprising:
A retarder for use on a vehicle, the retarder comprising:
Dependencies are inferred from the claim text.