Abstract: A stator coil assembly comprising a stator coil and a mounting platform for the stator coil. The coil has an earth wrap and is bonded to the mounting platform by a resiliently deformable bonding layer. The bonding layer is an electrical insulator formed from silicone rubber and has a thermal conductivity of at least 0.1 W/mK and an electrical resistivity which is at least equal to that of the earth wrap.

Abstract: A stator coil assembly comprises a stator coil and a mounting platform (4) for the stator coil. The coil has an earth wrap (2) and is bonded to the mounting platform (4) by a resiliently deformable bonding layer (5). The bonding layer (5) has a thermal conductivity of at least 0.1 W/mK and an electrical resistivity which is at least equal to that of the earth wrap (2).

Abstract: A rotor disc (14), for use in an electrical machine (10), has at least one circumferential rotor rim (16) mounted thereon. The rotor rim (16) comprises at least one row of alternate magnets (20) and laminated pole pieces (18). The laminations in each pole piece (18) are mounted concentrically on a bolt (22) that extends through the rotor disc (14). A clearance (23) is provided between the laminations in each pole piece (18) and the bolt (22). The clearance (23) insulates the bolt (22) from the laminated pole pieces (18), which are made from a ferromagnetic material such as silicon-iron alloy, to minimize power losses due to eddy currents.

Abstract: A rotor disc (14), for use in an electrical machine (10), has at least one circumferential rotor rim (16) mounted thereon. The rotor rim (16) comprises at least one row of alternate magnets (20) and laminated pole pieces (18). The laminations in each pole piece (18) are mounted concentrically on a bolt (22) that extends through the rotor disc (14). A clearance (23) is provided between the laminations in each pole piece (18) and the bolt (22). The clearance (23) insulates the bolt (22) from the laminated pole pieces (18), which are made from a ferromagnetic material such as silicon—iron alloy, to minimize power losses due to eddy currents.

Abstract: A vehicle having a base structure with bodywork and a fuel tank assembly mounted on the base structure is disclosed wherein the fuel tank assembly includes a fuel tank having a filler neck, access to the inlet of which is gained through an aperture in a panel forming part of the bodywork. A grommet, fitted to the filler neck, has a skirt portion at one end, adapted to encircle the filler neck, at least one flange at the other end, adapted to engage the edge portion of the aperture in the panel, and an overflow channel disposed between the flange and the skirt. The overflow channel is provided with an outlet adapted for connection to a drain pipe. The filler neck is also provided with an outer portion of a first cross-sectional area and an adjacent inner portion of a second cross-sectional area which is smaller than the first cross-sectional area.

Abstract: Hardness testing apparatus, for use in assessing dimensions, from which a hardness value can be determined, of an indentation formed under controlled conditions in a surface of a specimen, having a photosensitive detector for sensing brightness over an image in which the indentation differs in brightness from the rest of the image. The detector produces electrical signals representative of sensed brightness. Discrimination circuitry discriminates signals representative of brightness within the indentation from signals representative of brightness outside the indentation. Correlation of discrimination results provides an assessment of indentation dimensions. Preferably oblique lighting is used to provide enhanced brightness differentation between a multifaceted indentation and other specimen surface features. The oblique light is directed so as to be specularly reflected from a facet of the indentation vertically with respect to the general specimen surface.

Abstract: Hardness testing apparatus, for use in assessing dimensions, from which a hardness value can be determined, of an indentation formed under controlled conditions in a surface of a specimen, having a photosensitive detector for sensing brightness over an image in which the indentation differs in brightness from the rest of the image. The detector produces electrical signals representative of sensed brightness. Discrimination circuitry discriminates signals representative of brightness within the indentation from signals representative of brightness outside the indentation. Correlation of discrimination results provides an assessment of indentation dimensions. Preferably oblique lighting is used to provide enhanced brightness differentation between a multifaceted indentation and other specimen surface features. The oblique light is directed so as to be specularly reflected from a facet of the indentation vertically with respect to the general specimen surface.