Patent ID: 8820192
Filing Date: 2014-09-02
Classification: B29C,B29L,B62K,B62M,Y10T

Abstract:
1. A crank arm for a bicycle, the crank arm comprising: a body extending along a body axis and having a first body end and a second body end axially spaced apart from the first body end along the body axis, the body comprising a recess having a throat region and being formed from a body material having a first coefficient of thermal expansion; an insert provided within the body and disposed toward the first body end, the insert comprising a base portion extending along an insert axis and defining a radial direction orthogonal to the insert axis, the base portion having a radially outer surface and an aperture extending axially through the base portion, the aperture configured to receive a fastener for connecting the crank arm to another component of the bicycle, the insert being formed from an insert material having a second coefficient of thermal expansion that is greater than the first coefficient of thermal expansion; at least one extension extending outwardly from the radially outer surface of the base portion and being encased within the recess in the body, the at least one extension comprising; the neck extending through the throat region of the recess, the throat region having a throat width measured in the first direction and a throat depth measured in the second direction, the throat width being equal to or greater than the neck width and less than the retaining width and the throat depth being equal to or greater than the neck depth and being less than the retaining depth wherein the at least one extension is wedged within the recess thereby inhibiting relative radial movement between the at least one extension and the recess and preventing radial extraction of the at least one extension from the corresponding recess, and wherein relative planar movement between the body and the at least one extension in a first plane orthogonal to the radial direction is restrained.