Exercise apparatus with a magnetic resistance
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United States of America Patent
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Nov 17, 2015
Grant Date -
Jul 9, 2015
app pub date -
Jul 17, 2013
filing date -
Jul 17, 2012
priority date (Note) -
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Abstract
Exercise apparatus (1) in which a person exercising exerts a force against a movable actuator (6) to which is applied an adjustable force by a load system which resists or assists the movement of the actuator and is connected to the actuator by cables (9). The load system comprises a fixed, longitudinally arranged coaxial series of coil units (15), each coil unit being independently connectible to a source of electric current. The series of coils provides an elongate passage (18), and a shuttle (19) of ferromagnetic material is mounted for relative longitudinal movement within the passage, in response to movement of the actuator. Passage of a current through a coil unit exerts a force on the shuttle when in that coil unit, and is controlled by a microprocessor (22).
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