Abstract: An electrical motor for a submersible machine, including a stator unit having a stator core and a rotor unit that is rotatably arranged in the stator unit. The rotor unit includes a rotor core and at least one permanent magnet. The rotor core has an outer diameter that is smaller than an inner diameter of the stator core. The rotor unit includes a brake, the radially outer surface of which is inscribed on a circle having a diameter that is greater than the outer diameter of the rotor core. At least a part of the brake is arranged to abut against an inner surface of the stator core upon mutual axial displacement of the rotor unit and the stator unit. The brake is spaced-apart from the stator core when the rotor unit is in the mounted state in the stator unit.

Abstract: A method for securing a motor housing to a motor assembly is provided. One application of the method creates a motor housing to secure and protect a motor assembly. A flat metal sheet is shaped, so that deformable ends of the sheet are incrementally rolled to form a split annulus approximating the outer circumference of a motor assembly. Once the split annulus is formed, the ends are elastically deformed to facilitate inserting the motor into a hollow portion of the split annulus. After the motor is inserted, the ends may be joined by welding one to the other. This type of housing secures the motor assembly through a crimping force applied by the housing. Alternately, the ends may be welded together and to the motor assembly itself, thereby forming a strong support structure between the housing and the motor assembly.

Abstract: An electrical motor for a submersible machine, including a stator unit having a stator core and a rotor unit that is rotatably arranged in the stator unit. The rotor unit includes a rotor core and at least one permanent magnet. The rotor core has an outer diameter that is smaller than an inner diameter of the stator core. The rotor unit includes a brake, the radially outer surface of which is inscribed on a circle having a diameter that is greater than the outer diameter of the rotor core. At least a part of the brake is arranged to abut against an inner surface of the stator core upon mutual axial displacement of the rotor unit and the stator unit. The brake is spaced-apart from the stator core when the rotor unit is in the mounted state in the stator unit.

Abstract: The invention is directed to an efficient cost-effective method for creating a housing. One application of the method creates a motor housing to secure and protect a motor assembly. A flat metal sheet is shaped, so that deformable ends of the sheet are incrementally rolled to form a split annulus approximating the outer circumference of a motor assembly. Once the split annulus is formed, the ends are elastically deformed to facilitate inserting the motor into a hollow portion of the split annulus. After the motor is inserted, the ends may be joined by welding one to the other. This type of housing secures the motor assembly through a crimping force applied by the housing. Alternately, the ends may be welded together and to the motor assembly itself, thereby forming a strong support structure between the housing and the motor assembly.

Abstract: The present invention provides an apparatus that fastens elements of a frame assembly. The frame assembly implements fasteners as independent elements from both a housing and a corresponding housing cover. Exemplary embodiments of such fasteners may include the hook nut fasteners disclosed herein. Generally, such fasteners include a central portion providing a contact area disposed in the plane of a housing fastening aperture, an extension tab providing a contact area on a housing interior wall, and an extension block providing a contact area on a housing exterior wall. The extension block may include a hollow portion configured to receive a securing bolt. One advantageous application of the invention relates to automobile motor assembly housings. Specifically, in that embodiment the hook nut fastening assembly reinforces the motor housing and provides additional support to the assembly by reinforcing the joints between an end-cover and a motor assembly main body.

Abstract: A stator or a rotor for an electrical machine comprises a plurality of circumferentially separated, radially extending teeth, wherein each tooth having a single winding and is provided with an axially and radially extending reluctance barrier to increase the reluctance of each tooth regarding propagation of a magnetic field not interacting with the winding of said tooth.

Abstract: A stator (1) for an electrical induction machine comprises at least two stator sections (2, 3) at two different axial positions, each section having a plurality of circumferentially separated, radially extending teeth (6, 7) and each tooth having a single winding. The stator sections are mutually phase-shifted so as to reduce the effect of other harmonics than the working harmonics. In a stator having two separated stator sections, these are physically phase-shifted by 180° electrical±an angle related to skew, and then have their electrical supplies also shifted by 180° electrical.

Abstract: A stator assembly for an alternating current generator. The stator core is a one-piece molded part that is formed of iron powder having a particle size in a range of about 10 to 250 microns. The powder is bound together by a thermoplastic material which covers the particles and which serves to insulate the particles from each other. The particles may be coated with phosphorus and the phosphorus layer overcoated with the thermoplastic material. A three-phase output stator winding is carried by the core and has conductor portions located in core slots.