Patent ID: 9422834
Filing Date: 2016-08-23
CPC Classification: F01L,F02M

Claim Text:
1. A roller lifter for internal combustion engines, comprising: a cylindrical lifter body including a sliding surface on an outer circumferential surface thereof that slides on an inner wall of a cylinder; and a roller rotatably attached to the lifter body via an axial support pin and making contact with a rotating cam lobe; the lifter body further including a pair of support portions supporting the axial support pin, the axial support pin being mechanically fastened to the pair of support portions, with both ends thereof inserted in support holes formed in the pair of support portions, and a first anti-rotation retainer extending radially outward from the sliding surface, wherein the sliding surface is formed on both front and rear sides in a sliding direction of the first anti-rotation retainer, wherein the first anti-rotation retainer includes a first flat surface parallel to the sliding direction and extending radially outward from the sliding surface at a position between the front and rear sides of the sliding surface, wherein the sliding surface is split into a front sliding surface formed a front side of the first anti-rotation retainer and a rear sliding surface formed on a rear side of the first anti-rotation retainer, and wherein a small diameter part having a surface recessed radially inward from the sliding surface is formed between the front sliding surface and the rear sliding surface, the first anti-rotation retainer extending from this small diameter a so as to form an angle with the recessed surface.