专利名称：Improvements in or relating to electrical
machines
发明人：Gillett, Anthony W.,Motion, William C.申请号：EP96306418.3申请日：19960904公开号：EP0762606A2公开日：19970312
专利附图：
摘要：An electrical machine, such as an electric motor, generator or torquer-generator, includes a relatively rotatable cylindrical armature (46) and magnetic polestructure (39) separated by an annular gap (44) into which a surrounding fluid may flow
during operation of the machine. In order to prevent the build-up of deposited solidmaterial (48) in the gap between the components, one of the components is provided atits surface with a narrow elongate projection (47) which extends helically along andaround the surface. The height of the projection (47) is slightly less than the gap (44)between the components so that it remains out of contact with the surface of the othercomponent so as not to frictionally engage it and interfere with relative rotation betweenthe components.
申请人：CAMCO DRILLING GROUP LIMITED
地址：Hycalog Oldends Lane Industrial Estate Stonehouse, Gloucestershire GL10 3RQGB
国籍：GB
代理机构：Carter, Gerald
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