An eddy current resistance generating device includes a magnet base, a plurality of magnets, a conductive member and a friction set. The magnet base has two inner walls. The magnets are disposed on the two inner walls of the magnet base, wherein the magnets on the two inner walls are face to each other. The conductive member is located between the magnets on the two inner walls for generating an eddy current resistance while the magnets are moved relative to the conductive member. The friction set is disposed between each of the magnets and the conductive member, wherein the friction set includes at least one friction matrix.

An eddy current resistance generating device includes a magnet base, a plurality of magnets, a conductive member and a friction set. The magnet base has two inner walls. The magnets are disposed on the two inner walls of the magnet base, wherein the magnets on the two inner walls are face to each other. The conductive member is located between the magnets on the two inner walls for generating an eddy current resistance while the magnets are moved relative to the conductive member. The friction set is disposed between each of the magnets and the conductive member, wherein the friction set includes at least one friction matrix.

The invention relates to a rotary induction heater with direct-current excitation for heating solid or liquid or gaseous substances. The alternating magnetic field required for induction or for generating inductive heat is generated with a direct-current coil having a constant magnetic field. The constant magnetic field is converted into an alternating magnetic field by way of a rotating mechanical component.

A decelerating apparatus includes a brake member, primary and secondary permanent magnets and pole pieces. The primary permanent magnets are arranged in a circumferential direction to face an inner or outer peripheral surface of the brake member with a gap in between. Each of the primary permanent magnets has two opposite magnetic poles arranged in a radial direction. The secondary permanent magnets and the pole pieces are placed in the gap and arranged in the circumferential direction. Each of the secondary permanent magnets has two opposite magnetic poles arranged in the circumferential direction. Each of the pole pieces is positioned between adjacent secondary permanent magnets. Magnetic pole arrangements of adjacent primary permanent magnets are opposite to each other. Magnetic pole arrangements of adjacent secondary permanent magnets are opposite to each other. Each of the secondary permanent magnets has a trapezoidal cross-sectional shape including an upper base and a lower base.

A decelerating apparatus includes a brake member, primary and secondary permanent magnets and pole pieces. The primary permanent magnets are arranged in a circumferential direction to face an inner or outer peripheral surface of the brake member with a gap in between. Each of the primary permanent magnets has two opposite magnetic poles arranged in a radial direction. The secondary permanent magnets and the pole pieces are placed in the gap and arranged in the circumferential direction. Each of the secondary permanent magnets has two opposite magnetic poles arranged in the circumferential direction. Each of the pole pieces is positioned between adjacent secondary permanent magnets. Magnetic pole arrangements of adjacent primary permanent magnets are opposite to each other. Magnetic pole arrangements of adjacent secondary permanent magnets are opposite to each other. Each of the secondary permanent magnets has a trapezoidal cross-sectional shape including an upper base and a lower base.

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.

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.

A damping mechanism may comprise a housing, a shaft, a spring arm assembly including a first spring arm, wherein the spring arm assembly is coupled to the shaft and configured to rotate in response to a rotation of the shaft, wherein the first spring arm extends relatively radially outward of the spring arm assembly toward the housing in response to the rotation of the shaft, and wherein the rotation of the shaft is damped in response to extending the first spring arm.

A damping mechanism may comprise a housing, a shaft, a spring arm assembly including a first spring arm, wherein the spring arm assembly is coupled to the shaft and configured to rotate in response to a rotation of the shaft, wherein the first spring arm extends relatively radially outward of the spring arm assembly toward the housing in response to the rotation of the shaft, and wherein the rotation of the shaft is damped in response to extending the first spring arm.

Described herein is a system, method of use and Self Retracting Lifeline (SRL) apparatus using a system that governs a dynamic response between members causing a halt in relative motion between the members. Magnetic interactions, eddy current drag forces and centrifugal and/or inertial forces may provide various mechanisms of governing movement.