Abstract: A rotor or stator hub for an electric machine includes a plurality of magnets arranged in a predetermined same pattern on a plurality of uniformly sized carrier plates. A plurality of permanent magnets are uniformly mounted on each of the carrier plates proximate a first edge of the carrier plate and spaced away from a second edge of the carrier plate. The carrier plates may be mounted on a rotor or stator hub in a predetermined configuration to create a plurality of axial array groups.

Abstract: An electric machine includes a plurality of teeth separated by a plurality of slots positioned on an armature of the electric machine. Each of the teeth may include at least one bifurcation. A plurality of magnets may be arranged on a main field of the electric machine to form an axial array group. The magnets in the axial array group may be arranged in the main field with respect to each other to create a multi-stepped arrangement having a predetermined step angle. The step angle is determined based on the positioning of the bifurcations and the slots.

Abstract: A cooling system for an electric machine is provided. The cooling system includes an airflow restriction feature configured to provide airflow to a radial air channel of the electric machine.

Abstract: A rotor structure is provided to block direct axis flux from a stator armature without reducing the main magnetizing flux from permanent magnet inside the rotor. For example, a rotor may be provided including a magnet and a non-magnetic region located radially between the magnet and an edge of the rotor.

Abstract: A transmission mechanism having a deceleration function includes a guide screw, a worm wheel set, an intermediary ring, an isolator and a passive sleeve. The worm wheel set is fitted onto the guide screw and includes worm wheel and plural claw arms. A spacing slot is formed between any two adjacent claw arms. The intermediary ring is fitted onto a peripheral edge of each claw arm. The isolator surrounds a peripheral edge of the intermediary ring with one side fixed to an actuator. With plural grooves arranged on a peripheral edge thereof, the passive sleeve is fitted onto the guide screw. An accommodation space is formed among the groove, spacing slot and intermediary ring. Each needle roller is accommodated in the accommodation space and inter-contacted with the claw arm, the intermediary ring and the passive sleeve.

Abstract: The present invention provides a method and machine for producing a slotted wound core (50). The machine includes a punch arrangement (16) arranged to punch apertures in a length of material (12a), a mandrel (22) for receiving the punched material, a control means and a mandrel indexing means. The positioning of the punch arrangement (16) and the mandrel (22) is fixed and the mandrel (22) is arranged to be rotated by the mandrel indexing means after each operation of the punch arrangement so that a roll of punched material is formed on the mandrel (22). The mandrel (22) is rotated by an amount (&ggr;) determined by the control means. The control means determines the indexed amount so that selected apertures punched in the length of material align with one another when the material (12a) is rolled onto the mandrel (22) so that the aligned apertures form respective slots (52) of a desired configuration in the core (50).

Abstract: A connecting assembly for an electric cylinder and a control box includes an electric cylinder, an electric control box and a sheathing ring. The electric cylinder includes an actuator and a contractible pipe module perpendicularly connected to an end of the actuator. The electric control box is disposed on an internal side at a right-angled position with respect to the actuator and the contractible pipe module and slidably connected to a side of the actuator. The sheathing ring is sheathed onto a contractible pipe module and slidably connected to a side of the electric control box. The connecting assembly of the invention not only achieves a screwless application, but also provides a quick, simple, convenient and stable assembling process.

Abstract: A method for assembling a direct drive generator assembly includes the steps of placing a rotor over a stator, leaving a gap therebetween. A magnetic hub is assembled using adjacent columns of magnets having opposed orientation, and placed in the air gap. Application of an input torque to generate cogging torque in first direction that offsets coggery torque in second direction.

Abstract: A stator winding for a slotless motor is parallel with the longitudinal axis of the motor except at the end turns of the coil windings. The coils have concentrated windings with a pair of coils wired in series to form one phase of the stator windings. Each of the pair of coils are wound such that the magnetic flux produced by a dc current through the coils produces magnetic flux of opposite directions with respect to the rotor of the motor.

Abstract: A system and method for lumbar arthroplasty in a spinal segment is provided having first and second vertebral bodies, where a intervertebral disc prosthesis may be positioned between the first and second vertebral bodies such that a center of rotation of movement of the vertebral bodies about the prosthesis is located substantially proximate to the upper endplate of the second vertebral body and substantially proximate to the posterior one-third portion of the second vertebral body. In addition, a stabilization element may be affixed to the first and second vertebral bodies such that a range of motion of the stabilization device defines a center of rotation substantially proximate to that of the intervertebral disc prosthesis.

Abstract: A linear actuator includes a base having a positioning post and a motor fixed on one side of the base. A spindle positioning means includes a spindle, a seat and a fixing element. The spindle protrudes from the motor and penetrates the base. One side of the spindle away from the motor is formed with a free end. The seat includes a cylinder and an extension plate protruding outwards from the periphery of the cylinder. The extension plate is provided with a trough. The cylinder is connected to the free end of the spindle. The trough of the extension plate is located to correspond to the positioning post. The fixing element passes through the trough to fix the seat on the positioning post. Via this arrangement, the breakage of the spindle caused by a lateral force can be prevented efficiently.

Abstract: A method for assembling a direct drive generator assembly includes the steps of placing a rotor over a stator, leaving a gap therebetween. A magnetic hub is assembled using adjacent columns of magnets having opposed orientation, and placed in the air gap. Application of an input torque to generate cogging torque in first direction that offsets coggery torque in second direction.

Abstract: A direct-drive generator and assembly procedure for that generator include a permanent magnet assembly that is partitioned and assembled piece-by-piece after the rotor and stator have been attached. The magnets are attached to a plate in columns, and adjacent columns have a N-S orientation. The air gap between the rotor and stator is variable, and application of an input torque produces a first cogging torque in a first direction due to the variable air gap that offsets a second cogging torque in a second opposite direction.

Abstract: Embodiments of the invention provide a control system for a garage door. The control system can include a motor, a pulley, a synchronous drive member, a carriage, and an operator. The pulley can be coupled to and driven by the motor. The synchronous drive member can be coupled to the pulley and driven by the pulley. The carriage can be coupled to the synchronous drive member and to a bottom edge of a garage door. The operator can be coupled to the motor and can control the motor. The operator can be mounted vertically adjacent to the garage door when the garage door is in a closed position.

Abstract: A slide mechanism of a linear transmission apparatus includes an actuating mechanism, a guide screw and a slide mechanism. The slide mechanism includes a fixing base, a primary guide rail, left and right secondary guide rails and a slide element. The fixing base has a through hole for passing the guide screw. The primary guide rail and each secondary guide rail are engaged to the guide screw and connected to the fixing base. The primary guide rail has a top panel and two side panels. Each secondary guide rail has an extended panel protruded from a side proximate to the primary guide rail. The top of each extended panel is not lower than the bottom of the side panel, and the slide element is sheathed onto the exterior of the guide rail, and a nut secured to the guide screw is formed in each guide rail.