Frictional Coupling

摘要

A coupling between a first surface and a second surface is disclosed. The first surface includes a first shape and has a surface roughness average that is less than or equal to about 500 microinches (13 microns). The second surface includes a second shape and projections, in a preselected pattern, forming at least a portion of the second surface. The first shape of the first surface and the second shape of the second surface are substantially complementary. The projections are configured to produce a friction fit between the first surface and the second surface when the first and the second surfaces are biased against each other. An average elastic compressive range, substantially equal to the surface roughness average of the first surface, is associated with the projections.

主权项

1. A coupling between a first surface and a second surface, wherein:
the first surface includes a first shape and a surface roughness average that is less than or equal to about 500 microinches (13 microns); and the second surface includes:
a second shape, the first shape and the second shape being substantially complementary shapes, andprojections, in a preselected pattern, forming at least a portion of the second surface, the projections having an average elastic compressive range substantially equal to the surface roughness average of the first surface, wherein the projections, in response to a constant force biasing the first surface and the second surface against each other, produce one of a locational interference fit or a shrink fit between the first surface and the second surface: andwherein the force biasing the first surface and the second surface against each other is greater than zero, but is insufficient to exceed the average elastic compressive range of the projections.