A radial flux electric machine includes a rotor configured to rotate about an axis of rotation, a plurality of electromagnetic coils, and a stator. The stator may have an annular stator ring and a plurality of core tooth-portions extending in a radial direction. The annular stator ring and the plurality of core tooth-portions may be integrally formed of a Soft Magnetic Composite (SMC). The SMC may include one or more isotropic ferromagnetic materials, a magnetic saturation induction of greater than or equal to about 1.6 Tesla, and an electrical resistivity greater than 10 micro-ohm/m.

A motor comprising: (a) one or more motor stators including a plurality of motor windings; (b) a roller shaft connected to the one or more motor stators, the roller shaft extending along a longitudinal axis of the motor and being adapted to span between two frame members; and (c) a motor rotor including: (i) a roller tube including a key, a key recess, or both, and (ii) one or more ring magnets having: (1) a mating surface shaped to substantially mate to a mating surface of the roller tube and (2) a key recess that receives the key of the roller tube, that receives a separate key that extends into the key recess of one of the one or more ring magnets and the key recess, or both; wherein the one or more ring magnets are produced from a rare earth metal; and wherein the motor rotor carries a load of an article so that the article is moved by the motor rotor.

A motor comprising: (a) one or more motor stators including a plurality of motor windings; (b) a roller shaft connected to the one or more motor stators, the roller shaft extending along a longitudinal axis of the motor and being adapted to span between two frame members; and (c) a motor rotor including: (i) a roller tube including a key, a key recess, or both, and (ii) one or more ring magnets having: (1) a mating surface shaped to substantially mate to a mating surface of the roller tube and (2) a key recess that receives the key of the roller tube, that receives a separate key that extends into the key recess of one of the one or more ring magnets and the key recess, or both; wherein the one or more ring magnets are produced from a rare earth metal; and wherein the motor rotor carries a load of an article so that the article is moved by the motor rotor.

A fluid moving apparatus includes an electric motor having a rotor and a stator and a fluid displacement member. The rotor rotates relative to the stator on a common axis to generate a rotational output. The rotational output is provided to the fluid displacement member to power the fluid displacement member to one of move linearly along and rotate about the common axis. The stator includes one or more coils configured to power rotation of the rotor. The one or more coils extend circumferentially around and can be coaxial on the common axis.

One embodiment provides an electric rotary machine unit including: a first electric rotary machine having a first stator; and a second electric rotary machine having a second stator. A coil configured by plural coil segments is disposed in each of the first and second stators. The first and second stators are disposed so that connecting portions of the coil segments or joint portions of leg portions of the coil segments are positioned between the stator cores thereof. First and second feeding portions are interposed between the first and second stators in the axial direction and spaced apart from each other in the circumferential direction.

An electric motor has a first carrier having an array of electromagnetic elements and a second carrier having electromagnetic elements defining magnetic poles. The first and second carriers each define an axis. An airgap is formed between the first and second carriers when in an operational position. An inner thrust bearing connects the first and second carriers and is arranged to allow relative rotary motion of the carriers. An outer thrust bearing connects the first and second carriers and is arranged to allow relative rotary motion of the carriers. The electromagnetic elements of each of the first and second carriers are arranged radially inward of the outer thrust bearing and radially outward of the inner thrust bearing. The inner thrust bearing and the outer thrust bearing are arranged to maintain the airgap against a magnetic attraction of the electromagnetic elements of the first and second carriers.

A linear motor device includes a track member with multiple magnets with alternating N poles and S poles arranged along the moving direction, and a moving body with a configuration which includes an armature which is movably mounted on the track member; and the device generates a driving force in the moving direction between the magnetic flux created armature and the magnets of track member. The armature also includes a heat conduction member arranged in cooling passages formed in cores of the armature. By this, coils on the moving body side are cooled efficiently, and a large driving force can be achieved by passing a large current as well as maintaining a large space for winding the coils in order to increase the winding count.

An induction motor or generator assembly for converting either of an electrical input or rotating work input to a mechanical or electrical output. An outer annular arrayed component is rotatable in a first direction and includes a plurality of magnets. An inner concentrically arrayed and reverse rotating component exhibits a plurality of outwardly facing and circumferentially spaced array of coil-subassemblies opposing the magnetic elements, such that a gap separates the coil-subassemblies from the magnets. The coil sub-assemblies each include a plurality of concentrically arrayed coils configured within a platform support of the inner component. A drive box including a sleeve shaped trunk and a base, a pair of rotatable wheels supported at annular offset locations of said base and receiving looped ends of a belt, said belt also channeling upper and lower pulley rings associated with said inner and outer components.

An induction motor or generator assembly for converting either of an electrical input or rotating work input to a mechanical or electrical output. An outer annular arrayed component is rotatable in a first direction and includes a plurality of magnets. An inner concentrically arrayed and reverse rotating component exhibits a plurality of outwardly facing and circumferentially spaced array of coil-subassemblies opposing the magnetic elements, such that a gap separates the coil-subassemblies from the magnets. The coil sub-assemblies each include a plurality of concentrically arrayed coils configured within a platform support of the inner component. A drive box including a sleeve shaped trunk and a base, a pair of rotatable wheels supported at annular offset locations of said base and receiving looped ends of a belt, said belt also channeling upper and lower pulley rings associated with said inner and outer components.

A generator comprising a series of spaced annular stators sandwiched between a series of rotors, the rotors each being separated by annular collars, the annular collars defining a central cavity; at least one cooling gas source for supplying gas to the central cavity; vents through the annular collars for providing a means of egress for the cooling gas from the central cavity radially outwards over the rotors and the annular stators and the front, rear and side walls of coils embedded in the annular stators.