Abstract: In the present invention, cord protruding portions at each of ends of a crawler body are divided into groups such that each group has a protruding length different from those of other groups. The entire cord protruding portions at one end of the crawler body when seen from a direction perpendicular to a belt surface are disposed so as to present a male configuration, and the entire cord protruding portions at the other end of the crawler body are disposed so as to present a female configuration. The lines each connecting ends of cord protruding portions at the ends of the crawler body can be disposed so as to form a configuration that is one of terraced, tiered, and crenellated when seen from a direction perpendicular to a belt surface. When seen from the direction perpendicular to the belt surface, an overlapping portion of steel cords includes two outlines separated from each other in a longitudinal direction of the belt, and each outline includes a bent line.

Abstract: The crawler belt 20 is structured of a plurality of inner shoes 21; a plurality of outer shoes 30 arranged to oppose each of the inner shoes; an endless ring-shaped rubber belt member 26 retained between the inner shoes and outer shoes respectively opposing each other; and an endless ring-shaped steel wire 27 embedded in the belt member extending in the longitudinal direction. The inner shoes 21 are arranged side by side along the inner periphery of the belt member, the outer shoes are arranged side by side along the outer periphery of the belt member, and concave portions are arranged in the longitudinal direction between the inner shoes and formed openly toward the inner periphery for receiving the sprocket teeth. Thereby, it is possible to reduce the travel noise while maintaining the advantages of the strength, durability and repairability of steel crawler belts.

Abstract: The invention relates to a snowmobile endless track belt of the type having a body made of an elastomeric material, an outer surface for contact with the ground and an inner surface provided with lugs for engagement with the snowmobile driving system and with at least one endless pathway that contacts a corresponding slide rail of the snowmobile suspension. The elastomeric material, in at least the area which is contacted by the slide rail, is composed of rubber and of a lubricating material so that friction generated between the slide rail and a driven belt is greatly reduced by the presence of such lubricating material in the elastomeric material.

Abstract: An elastic endless crawler according to the present invention comprises an annular belt-shaped elastic crawler body and a plurality of cords with ends, said cords being disposed substantially parallel with one another at predetermined intervals and embedded in the crawler body, wherein one end and the other end of each cord are overlapped, as seen from the belt side. Further, at at least one of a crawler inner peripheral side and a crawler outer peripheral side, there are provided a plurality of members for holding the cord ends within the crawler body. As a result, a chance of free ends of embedded steel cords protruding out from the rubber body during use of the rubber crawler and a chance of the rubber crawler running off of a unit for driving for rotation thereof can be eliminated.

Abstract: An endless track includes an iron link belt, a continuous pad, and a connecting device. The iron link belt includes a link unit assembly constructed of a plurality of link units connected to each other. Each link unit includes a pair of links. The iron link belt may include a plate welded to the pair of links and extending perpendicularly to a direction in which the link unit assembly extends. The continuous pad includes the same number of core metal plates as that of the link units, and a single rubber belt covering and being vulcanization-adhered to a ground opposing surface of each of the core metal plates. The rubber belt extends continuously over all of the core metal plates. The rubber belt may include a small thickness portion positioned between two adjacent core metal plates. The connecting device connects the iron link belt and the continuous pad.

Abstract: The crawler belt 20 is structured of a plurality of inner shoes 21; a plurality of outer shoes 30 arranged to oppose each of the inner shoes; an endless ring-shaped rubber belt member 26 retained between the inner shoes and outer shoes respectively opposing each other; and an endless ring-shaped steel wire 27 embedded in the belt member extending in the longitudinal direction. The inner shoes 21 are arranged side by side along the inner periphery of the belt member, the outer shoes are arranged side by side along the outer periphery of the belt member, and concave portions are arranged in the longitudinal direction between the inner shoes and formed openly toward the inner periphery for receiving the sprocket teeth. Thereby, it is possible to reduce the travel noise while maintaining the advantages of the strength, durability and repairability of steel crawler belts.

Abstract: The present invention concerns the provision of metallic clips mounted on the endless track of a snowmobile equipped with one or more elongated slide runners forming part of its suspension system. The clips are so formed that a first portion thereof is slidably and frictionally contacted by the slide runners during rotation of the track with a second portion thereof extending slightly above profiles integrally formed on the outer surface of the track so that the heat generated by the sliding friction of the slide runners on the clips is transferred directly to the ground, such as snow or ice, over which the snowmobile travels.

Abstract: The invention relates to an improvement in a snowmobile endless track belt of the type comprising a body made of an elastomeric material, an outer surface for contact with the ground and an inner surface provided with lugs for engagement with the snowmobile driving system and with at least one endless pathway that contacts a corresponding slide rail of the snowmobile suspension. The improvement is characterized in that the elastomeric material, in at least the area which is contacted by the slide rail, is composed of rubber and of a lubricating material so that friction generated between the slide rail and a driven belt is greatly reduced by the presence of such lubricating material in the elastomeric material.

Abstract: An endless track includes an iron link belt, a continuous pad, and a connecting device. The iron link belt includes a link unit assembly constructed of a plurality of link units connected to each other. Each link unit includes a pair of links. The iron link belt may include a plate welded to the pair of links and extending perpendicularly to a direction in which the link unit assembly extends. The continuous pad includes the same number of core metal plates as that of the link units, and a single rubber belt covering and being vulcanization-adhered to a ground opposing surface of each of the core metal plates. The rubber belt extends continuously over all of the core metal plates. The rubber belt may include a small thickness portion positioned between two adjacent core metal plates. The connecting device connects the iron link belt and the continuous pad.

Abstract: An endless drive track system for use with a tracked vehicle. The endless drive track system includes a planetary drive system having drive rollers, a plurality of roller wheels, and an endless track with a reinforcing brace embedded within the endless track for at least one of a plurality of drive beads extending from an interior surface of the endless track. The reinforcement brace is made of wear-resistant material. Each drive bead has at least one drive face that is engaged by the drive rollers of the planetary drive system. The roller wheels frictionally engage at least one, if not both, friction faces of each drive bead. Each reinforcing brace includes a horizontal section having first and second ends. A first flange extends from the horizontal section near a first friction face of each drive bead while a second flange extends from the horizontal section near a second drive friction face of each drive bead. The first and second flanges extend from a horizontal section of the reinforcing brace.

Abstract: An endless drive track system for use with a tracked vehicle includes a planetary drive system having drive rollers, a plurality of roller wheels, an endless track having an interior surface and a plurality of drive lugs attached to the interior surface. Each drive lug includes at least one drive face that is positively engaged by the drive rollers of the planetary drive system, and longitudinal faces that are engageable with the sides of the roller wheels. Each longitudinal face has an angled shape defined by upper and lower portions. The lower portion is substantially perpendicular to the interior surface while the upper portion is angled between about 5° and 60° with respect to the lower portion. This arrangement promotes lateral guidance of the endless track and reduces the potential of damaging contact between the longitudinal faces and the roller wheels. The endless track may include a reinforcing brace having flanges that protect the longitudinal faces.

Abstract: A track wheel having a self supporting track (1) mounted on a pair of load bearing rollers (2, 3). The track (1) comprises a continuous resilient band having a preformed transverse and longitudinal curvature for resisting flattening to a larger radius under load but substantially free to bend to a smaller radius of curvature for passage around the rollers. The radius (8) of transverse curvature is made approximately equal to the radius (7) of said rollers, and the radius (15) of longitudinal curvature is made not greater than 20 times the radius (8) of the transverse curvature to provide a short track wheel having a high load capacity and large surface contacting area or footprint.

Abstract: A rubber track assembly comprising a driving wheel, an idler wheel, an endless rubber track extending around the driving wheel and the idler wheel and having a plurality of rubber lugs formed on its outer circumference and a plurality of rubber guide projections formed on its inner surface, and a plurality of roller wheels arranged in contact with inner surface of the rubber track in a ground contact region thereof, each of the wheels has a pair of wheel portions formed at its opposite sides and spaced apart to be disposed at opposite sides of the guide projection for engaging the inner surface of the rubber track at the opposite sides of the guide projection. The rubber guide projection is provided with at least one low friction surface having a coefficient of friction lower than that of the rubber material of the rubber guide projection.

Abstract: The present invention relates to a rubber crawler wherein a core bar having an engaging part at the central position along its length is provided with at least one horizontal projection to each of widthwise side faces of the engaging part at the almost same level as wing portions of the core bar, said horizontal projections projecting in a direction normal to the side faces of the core bar, said core bars are embedded in the crawler main body at equal intervals in a circumferential direction of the crawler so that confronting horizontal projections overlap each other in a widthwise direction of the core bar 1, and tips of the confronting horizontal projections between the embedded core bars are in a three-dimensionally overlapped state in which they overlap each other over a certain length thereof in left and right directions as well as upward and downward directions.

Abstract: A core bar of a rubber crawler has right and left wing portions, an engaging part at the longitudinal center thereof, protruding parts to prevent disengagements of a wheel, the protruding parts projecting upwardly from the wing portions with a fixed height on both ends of the engaging part, and at least one horizontal projection provided within a width of the protruding part on respective widthwise side faces of a core bar, the horizontal projection protruding at almost the same level as the wing portions in a direction perpendicular to the widthwise side faces of the core bar.