Rocker joint chain with crescent shaped aperture

Endless belt power transmission systems or components – Positive drive belt – Belt formed of rigid links

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Details

474230, F16G 1302

Patent

active

055625592

ABSTRACT:
A rocker joint for a power transmission chain constructed of an assembly of links and pivot members including a chain assembly having a plurality of sets of links interleaved with other sets of links. Each link has end portions and a central body portion and a pair of spaced apertures each spaced aperture defining a boundary. The pivot members include a pair of pins, each pin having a circular arc rocker surface, a circular arc seat surface opposite to the rocker surface and concentric with the rocker surface and a pair of side surfaces connecting the rocker surface and the seat surface. The pin side surface includes a circular arc having its center located outside the pin. Each aperture has a circular arc support surface located toward the end portion of the link. The aperture circular arc support surface engages the seat surface of one of the pins. The aperture has a retention surface connected to the circular arc support surface and facing toward the side surface of one of the pins, the retention surface has a center of curvature located outside the boundary defined by the aperture. The aperture also has a curved surface connected to the aperture retention surface.

REFERENCES:
patent: 5176587 (1993-01-01), Mott
patent: 5372554 (1994-12-01), Okuda

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