Borg-warner Automotive Gmbh

Borgwarner Inc.

Paul M Bateman

Philip J Mott

John Saxon Ivey

Edward H Cole, Jr

Julius A Clauss

John Craig Warner

A power transmission (10) chain-belt (32) is disclosed that is especially adaptable for connecting the pulleys or sheaves (12, 14) of a pulley transmission (10). The chain-belt (32) has a plurality of interleaved sets (34) of transversely arranged links (36). Pivot means (40) joined interleaved sets (34) of links (36) to form an endless loop. At least one toe (42a, 42b) extends from each link (36) in at least some sets (34) of links (36). The toes (42a, 42b) are in opposed relationship and define a passageway (80). A plurality of struts (50) are connected to the links (36) and are positioned in the passageway (80). Each strut (50) has edge surfaces (88) for contacting the pulleys (12, 14) of the transmission (10). Each strut further includes at least one notch (52) proximate the centerline of the strut (50). Retaining links (90 ) are supported by the pivot means (40) for engaging the notch (52) and limiting the lateral motion of the strut (50) with respect to the set (34) of links (36).

Chain-belt

A chain-belt for engagement with the pulleys of a continuously variable transmission consists of interleaved sets of chain links joined for articulation by a joint which has a rocking action. The joint includes a pair of pins. A small camber is introduced into one or both of the pins to create a spring load between the pins and the links to retain the pins in the chain during handling and assembly. Each chain link includes a pair of spaced apertures adjacent the opposite ends; each aperture has a generally hour-glass shape with the enlarged ends receiving the pins. Also, each chain link has a pair of oppositely disposed tabs adjacent one end with the location of the tabs on the links alternating on adjacent links of each set. In addition the outermost two links of each set of links had a width substantially less than the width of the inner links in that same set.

CVT chain-belt

A chain-belt for engagement with the pulleys of a continuously variable transmission consists of interleaved sets of chain links joined for articulation by a joint which has a rocking action. The joint includes a pair of pins. A small camber is introduced into one or both of the pins to create a spring load between the pins and the links to retain the pins in the chain during handling and assembly. Each chain link includes a pair of spaced apertures adjacent the opposite ends; each aperture has a generally hour-glass shape with the enlarged ends receiving the pins. Also, each chain link has a pair of oppositely disposed tabs adjacent one end with the location of the tabs on the links alternating on adjacent links of each set. In addition the outermost two links of each set of links has a width substantially less than the width of the inner links in that same set.

Cambered pin CVT chain belt

A flexible power transmission means comprising an assembly of a pair of spaced, generally parallel chains, each constructed of a plurality of sets of interleaved links. Each set is joined to its next adjacent set by a pin, each pin serving both chains. Generally trapezoidal-shaped load blocks are located between the chains and having cut-outs in the sides locating the chains. The load blocks are generally contoured at their edges to fit into the V of a pulley and are disposed between the chains. The load is carried by the chains and its pins. The load blocks are longitudinally positioned with respect to the chains by the chains' pins.

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Freeville, NY, United States of America

Paul M Bateman