Patent ID: 8950942
Filing Date: 2015-02-10
Classification: F04B,F16C

Abstract:
1. An eccentric bearing for converting a rotary motion into a reciprocating motion, comprising: a shaft configured to be driven rotationally; a bearing ring, which eccentrically surrounds the shaft; a plurality of rolling elements arranged around the shaft in a gap defined between the shaft and the bearing ring, wherein each of the rolling elements has one of a variety of diameters according to a variable width of the gap; and a rolling element cage configured to hold the plurality of rolling elements at relative spacings with respect to one another, wherein the variable width of the gap includes a maximum gap width and a minimum gap width located opposite the shaft from the maximum gap width, and wherein the rolling element cage exerts a spring action on the rolling elements in a narrowing direction of the gap defined circumferentially from the maximum gap width toward the minimum gap width.