A high torque reluctance brake device for fitness equipment, comprising: an external rotor including a flywheel and an outer ring body; at least two magnetic resistance mechanisms, each of them has a brake field core, a magnetic coil; a support frame for arranging magnetic resistance mechanisms to form an angle larger than 30 degree and to make between the outer periphery of the brake field core and the outer ring body has a gap; the control circuit unit transmits suitable current to the magnetic coil, then between the brake field core and the magnetic ring produced a eddy current magnetic resistance and forms a reverse resistance to the external rotor. By choosing different resistance setting can increase the variability of exercise and improve the comfort of exercise.

A high torque reluctance brake device for fitness equipment, comprising: an external rotor including a flywheel and an outer ring body; at least two magnetic resistance mechanisms, each of them has a brake field core, a magnetic coil; a support frame for arranging magnetic resistance mechanisms to form an angle larger than 30 degree and to make between the outer periphery of the brake field core and the outer ring body has a gap; the control circuit unit transmits suitable current to the magnetic coil, then between the brake field core and the magnetic ring produced a eddy current magnetic resistance and forms a reverse resistance to the external rotor. By choosing different resistance setting can increase the variability of exercise and improve the comfort of exercise.

An eddy-current braking mechanism including a rotor, rotatable about a rotor axis; at least one electrically conductive member coupled to the rotor for rotation therewith; at least one magnet configured to apply a magnetic field extending at least partially orthogonal to the plane of rotation of the conductive member, and characterised in that upon rotation of the rotor, the conductive member is configured to move at least partially radially from the rotor axis into the applied magnetic field.

Described herein is a device comprising members in a kinematic relationship. The kinematic relationship is at least partially governed by at least one magnetically induced force that introduces a force threshold that, in effect, provides a threshold to part movement and confers a degree of hysteresis, preventing movement until a sufficiently large energizing force is applied. The effect may be further altered by use of an additional magnetically induced force interaction with at least one further member to urge or slow movement once started and/or to prevent movement once a new position is reached.

Described herein is a device comprising members in a kinematic relationship. The kinematic relationship is at least partially governed by at least one magnetically induced force that introduces a force threshold that, in effect, provides a threshold to part movement and confers a degree of hysteresis, preventing movement until a sufficiently large energizing force is applied. The effect may be further altered by use of an additional magnetically induced force interaction with at least one further member to urge or slow movement once started and/or to prevent movement once a new position is reached.

A machine tool deceleration device, in particular a hand-held machine tool deceleration device, for a portable machine tool, includes at least one magnetic deceleration unit. The magnetic deceleration unit includes at least one movably mounted claw segment element that is configured to change at least one parameter of a magnetic field of the magnetic deceleration unit.

A machine tool deceleration device, in particular a hand-held machine tool deceleration device, for a portable machine tool, includes at least one magnetic deceleration unit. The magnetic deceleration unit includes at least one movably mounted claw segment element that is configured to change at least one parameter of a magnetic field of the magnetic deceleration unit.

Described herein is a device comprising members in a kinematic relationship. The kinematic relationship is at least partially governed by at least one magnetically induced force that introduces a force threshold that, in effect, provides a threshold to part movement and confers a degree of hysteresis, preventing movement until a sufficiently large energizing force is applied. The effect may be further altered by use of an additional magnetically induced force interaction with at least one further member to urge or slow movement once started and/or to prevent movement once a new position is reached.

Described herein is a device comprising members in a kinematic relationship. The kinematic relationship is at least partially governed by at least one magnetically induced force that introduces a force threshold that, in effect, provides a threshold to part movement and confers a degree of hysteresis, preventing movement until a sufficiently large energizing force is applied. The effect may be further altered by use of an additional magnetically induced force interaction with at least one further member to urge or slow movement once started and/or to prevent movement once a new position is reached.

Described herein are braking mechanisms and related methods of using eddy current interactions to resist relative movement between members, the magnetic flux about an eddy current region being modified beyond an inherent drag effect resulting from a simple magnetic pole arrangement.