Tuesday, July 03, 2007

US Patent 7238425 - Multiwall nanotube bearing


Some of the early speculation about nanotechnology included forming mechanical components such as gears and drive shafts from molecular materials. This patent from the University of California proposes such a molecular mechanical component in the form of a multiwall nanotube that acts as a translational or rotational bearing. Claim 1 reads:

1. A device comprising a telescoped multiwall nanotube comprised of: (a) an outer shell having a cylindrical wall, a closed end, and an interior cavity defined by the cylindrical wall and the closed end; and (b) a telescoped segment partially housed within the interior cavity of the outer shell and partially extending from the outermost shell, wherein said telescoped segment has a cylindrical segment wall, a closed segment end, and a segment cavity.

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