Borg-Warner Automotive Gmbh

Borgwarner Inc.

Borg-Warner Automotive, K.k.

John C Skurka

Tomonori Okuda

Steven Harold Manning

An inwardly cambered rocker joint for a power transmission chain is disclosed. The rocker joint includes a straight pin that defines a rocking surface and engages a first chain link. The rocker joint also includes an inwardly cambered rocker that engages a second chain link and that defines a rocking surface that contacts the pin rocking surface near the ends of the rocker. The inwardly cambered rocker joint provides a stiff joint that reduces tight strand resonance and chain wash.

Inwardly cambered rocker joint for a power transmission chain

A power transmission chain with a spring link of improved durability. The chain includes a plurality of link plates. Each of the links has a pair of pinholes. The links are interleaved and are connected by rocker joints inserted in the pinholes. Guide links are placed at the outermost sides of the inner links. A spring link with a pair of pinholes formed in it is placed between adjacent link plates. The link plate contacting parts at both ends of spring link are located outside of the link apertures. The spring links may also be placed in the chain in two different orientations.

Power transmission chain having a spring link

A chain and sprocket system includes a plurality of chains and phased or offset sprockets. The transmission system includes a random or hybrid chain with the offset sprockets. The timing system can include single or dual overhead camshafts, with phasing of the crankshaft sprockets and camshaft sprockets. The initial contacts of each chain assembly with the sprockets are phased or offset with respect to one another.

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Brooktondale, NY, United States of America

John C Skurka