Patent ID: 8672785
Filing Date: 2014-03-18
Classification: F16H,Y10T

Abstract:
1. A blade-type chain tensioner comprising: a bracket comprising a main wall, a ramp projecting from said main wall, and a pivot pocket comprising an internal concave pivot surface, wherein said internal pivot surface of said pivot pocket extends a maximum circumferential extent that is less than 360 degrees between first and second opposite ends of said internal pivot surface such that an open mouth of width “d” is defined between said first and second opposite ends of said internal pivot surface; a tensioner blade assembly operatively connected to said bracket, said tensioner blade assembly comprising a polymeric shoe and a spring connected to the shoe, said shoe comprising a free end supported on said ramp, a pivot end engaged with said pivot pocket, and a central body that extends between said free end and said pivot end; said pivot end of said shoe comprising a pivot barrel including an external convex pivot surface, wherein said pivot barrel is engaged with said pivot pocket and said external pivot surface of said pivot barrel is slidably abutted with said internal pivot surface of said pivot pocket such that said pivot barrel is reciprocally angularly movable in said pivot pocket, said external pivot surface of said pivot barrel comprising an outside diameter “D” and said width “d” of said open mouth being less than said outside diameter “D” of said external pivot surface, wherein a portion of the second end of said internal pivot surface of said pivot pocket is removed to define an install notch.