Abstract:
Permanent magnet rotor (10) with air gap sleeve (18) being crimped into clearances between the magnets (20a-f) to fix them. Six magnets (20a-f) are directly attached to the shaft (40) having a hexagonal receiving surface (22). The rotor is separated into three axial sections which magnets of one section are shifted in circumferential direction from the magnets of another section.
Abstract:
A physical therapy device comprising a supporting column (12), an arm (26), means (18) for rotatably and pivotally mounting the arm from the column, a harness (60), means (50) for suspending the harness from the arm and a walkway (66,70) extending around the supporting column and defined generally beneath the harness as the arm moves about its rotational mounting to the supporting column (12).
Abstract:
Permanent magnet rotor (10) with air gap sleeve (18) being crimped into clearances between the magnets (20a-f) to fix them. Six magnets (20a-f) are directly attached to the shaft (40) having a hexagonal receiving surface (22). The rotor is separated into three axial sections which magnets of one section are shifted in circumferential direction from the magnets of another section.
Abstract:
A brushless, liquid or air cooled, direct current motor formed from a three stack stator and three section rotor assembly using an integrated water cooled or air cooled housing and over-molding techniques.
Abstract:
A stator assembly for an electric motor, comprising: a cylindrical stator comprising a plurality of stator slots on an interior periphery of the cylindrical stator; at least one wire winding that is wound around the plurality of stator slots; and an overmold configured to cover the wire winding and at least a portion of the cylindrical stator.
Abstract:
A rotor having a substantially cylindrical configuration for use in a brushless direct current electric motor having a high torque to size ratio. The rotor has an outer peripheral surface. The rotor also has a central rotor shaft and a first and second retaining ends mounted on the central rotor shaft and spaced from one another. The rotor also has a plurality of magnets configured to provide a magnetic flux with a stator disposed around the central rotor shaft. The magnets are radially disposed on the shaft and the rotor also has a sheath. The sheath is crimped around the radially disposed permanent magnets, and holds the magnets around the shaft. The sheath is lightweight and minimizes a gap between the permanent magnets and the stator to provide for an electromagnetic flux between the magnets and the stator windings, and for rotation of the central rotor shaft.
Abstract:
An apparatus for manufacturing an internal wound stator includes a winding arbor configured to receive a conductive wire. The apparatus also has a stator loader, and receives a stator having a generally cylindrical shape with an interior opening and having a plurality of axial slots formed therein. The interior dimension of the stator is larger than the exterior dimension of the winding arbor such that the winding arbor and stator may traverse with respect to one another. The apparatus also has a first movable member configured for moving at least one of the winding arbor and the stator. The apparatus also has a second rotating member configured to rotate at least one of the stator and the winding arbor. The conductive wire is introduced through an interior of the winding arbor. The first movable member is configured to move at least one of the winding arbor and the stator relative to one another to wind the conductive wire in a first longitudinal manner and into a first of the plurality of axial slots. The second rotating member is configured to rotate at least one of the first winding arbor or the stator relative to one another to align the wire relative to a second axial slot of the plurality of axial slots. The first movable member is configured to move at least one of the winding arbor and the stator relative to one another to wind the conductive wire in a second opposite longitudinal manner and into the second axial slot.