COMPACT BRAKE
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United States of America Patent
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N/A
Issued Date -
Feb 11, 2010
app pub date -
May 31, 2007
filing date -
May 31, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An electrically controlled brake or clutch includes a rotatable first mechanical system (101, 108) and a second mechanical system that is stationary for the case of a brake but rotatable for the clutch case. In the second system windings are wound around two soft magnetic parts (102, 103) so that electric current flowing in the windings affects magnetic fluxes through the soft magnetic parts to move them in a direction that affects the effective length of an air gap in the closed main magnetic path. A spring (401) creates a force acting in a direction opposite that of the attraction force. The soft magnetic parts are arranged so that the main magnetic flux path passes along a closed loop about the rotational axis of the first mechanical system, this giving a compact design of the brake or clutch.
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