US Patent 7303495 Continuously variable transmission case cover

A case cover for a continuously variable transmission includes a wall having a plurality of fastening elements thereon and at which a sheave assembly is rotatably mountable. The wall forms at least a portion of a cavity for containing at least a portion of the sheave assembly. Two surfaces define a slot that is configured to position and positively locate a portion of the bearing retainer to result in coarse alignment of bearing retainer fastening elements with the case cover fastening elements. The bearing retainer fastening elements are preferably protruding nuts, and the case cover fastening elements are preferably tapered holes configured to further align the nuts for engagement with threaded fasteners.