Abstract: To prevent lateral slip of core metals and vertical vibration of track rollers and improve bendability of a crawler main body between core metals.

Abstract: An endless track for traction of an off-road vehicle, such as an agricultural vehicle, an industrial vehicle (e.g., a construction vehicle) or a military vehicle, is provided. The endless track a plurality of elastomeric lugs, such as drive/guide lugs projecting from the inner surface and/or traction lugs projecting from the ground-engaging outer surface. An elastomeric lug may have a material composition defining an arrangement of zones of different materials which comprises a plurality of zones of different elastomeric materials, may exhibit a desired variation of a material property (e.g., across the arrangement of zones of different materials. A zone of the elastomeric lug may have a dedicated function, such as a sacrificial zone or a wear indicator zone. An elastomeric drive lug may comprise an uneven drive surface, such as an angled or curved surface, for engaging a drive member of a drive wheel of the vehicle.

Abstract: An endless rubber elastic body 1; a plurality of cores 2 arranged at predetermined pitches and extending in a width direction of the rubber elastic body; a steel cord reinforcing layer surrounding the cores; and a lug 4 formed on an outer peripheral surface of the rubber elastic body 1 at predetermined intervals. Thicknesses of respective end portions of each core 2 are gradually decreased or made constant toward respective end edges. A covering thickness t1, t2 of rubber elastic body 1 is thicker at a portion between lugs on each of an inner and outer peripheral surface side than covering thickness T1, T2 of the rubber elastic body. Covering surfaces on both inner and outer peripheral surface sides are flat.

Abstract: A crawler track for a crawler tracked vehicle is configured for running via a drive wheel and via bogie wheels. The crawler track has an outer ground contact side and an inner wheel contact side. The inner wheel contact side is formed with a flat surface from which a plurality of guide horns project to guide the crawler track during the movement of the crawler tracked vehicle. At least parts of the flat surface serve as the running surface for the bogie wheels. Cavities are formed in the flat surface for the engagement of drive pegs of the drive wheel.

Abstract: A rubber track having: an endless rubber elastic body 1; a plurality of cores 2 arranged at predetermined pitches in the rubber elastic body so as to extend in a width direction of the rubber elastic body; a reinforcing layer extending in the rubber elastic body so as to surround the cores 2; and a plurality of lugs 4 formed on an outer peripheral surface of the rubber elastic body 1 at predetermined intervals and acting on a road surface, the rubber track comprising; a thick wall rubber portion, located between the lugs on the outer peripheral surface of the rubber elastic body, that covers an end portion of each of the cores and communicates with lugs located therebefore and thereafter, wherein an inclined plane of the thick wall rubber portion facing obliquely outward whose thickness gradually decreases toward a side edge side of the rubber elastic body is coplanar with an inclined plane of each of the lugs on the side edge side of the rubber elastic body.

Abstract: An endless track for traction of a work vehicle. The endless track comprises a body of elastomeric material and a plurality of cores at least partially embedded in the elastomeric material. Each core comprises a pair of wings extending transversally to a longitudinal axis of the endless track, and a wheel guide comprising at least one guide projection projecting on an inner side of the endless track. Each guide projection comprises a top end and a wheel-facing side for facing wheels of the work vehicle, such as roller wheels that roll on the inner side of the endless track. The wheel-facing side comprises a recess to impede passage of grit between the wheel-facing side and a portion of the elastomeric material in the recess. This can enhance a wear resistance of the endless track.

Abstract: A core bar for a rubber crawler capable of enhancing the durability of the rubber crawler by preventing an end-cutting phenomenon in which cracking is generated at the end of the core bar in a crawler lateral direction of the core bar embedded in the rubber crawler when the rubber crawler rides over a curbstone at the road shoulder of a paved road, stones and obstacles on irregular ground, and is pressed in a lateral direction. In the core bar (1) constituting the rubber crawler (3) and embedded in a rubber crawler body (3a), an enlarged width part (2) is formed by elongating the longitudinal end part of the core bar (1) beyond the width dimension of the core bar.

Abstract: A rubber track (1) has formed in it simple means that can carry a part of abnormal tensile force acting on substantially the entire length in the circumferential direction of the rubber track (1). The construction secures smooth operation of the rubber track and reliably prevents cutting of a steel cord (s1) due to such abnormal tensile force. A core (3) has an engagement section (3b) located in the center region in the longitudinal direction of the core, guide projections (3a) on the outer sides of the guide projections (3a). The core (3) further has tensile force carrying sections (4a, 4b) arranged at positions that are located in the thickness direction of the core and are closer to the outer periphery of the rubber track than the outer peripheral-side d-surfaces of the wing sections (3c). The tensile force carrying sections (4a, 4b) carry tensile force acting in the lateral direction of the core and also carry pressing force acting in the thickness direction of the core.

Abstract: This invention relates to an endless elastomeric traction band that is used to propel tracked vehicles. The traction band generally comprises a main body defining an outer ground-engaging surface and an inner wheel-engaging surface. The outer surface is generally provided with ground-engaging traction lugs. The inner surface of the traction band is preferably provided with one or more row of longitudinally aligned guide lugs and one or more rows of longitudinally aligned drive lugs. Additionally, guide lug reinforcements are inserted into said guide lugs and said band body to laterally reinforce the guide lugs and minimize de-tracking occurrences.

Abstract: Disclosed is an elastic crawler formed with an elastic material in the shape of an endless track, and used as the wheel for the work vehicle with enhanced reliability and durability. The elastic crawler includes a crawler body formed with an elastic material and having lugs protruded at the ground contact side thereof, and cores having wings extended left and right to the center of the crawler body in the width direction thereof, and arranged parallel to each other in the longitudinal track direction of the crawler body such that the wings face the lugs formed at the crawler body. The crawler body has first and second lug units alternately arranged parallel to each other in the longitudinal track direction thereof. The first lug unit has left lugs facing each other over two wings, and right lugs arranged right to the center of the crawler body while proceeding symmetrical to the left lugs around the center.

Abstract: An endless track for traction of a work vehicle. The endless track comprises a body of elastomeric material and a plurality of cores at least partially embedded in the elastomeric material. Each core comprises a pair of wings extending transversally to a longitudinal axis of the endless track, and a wheel guide comprising at least one guide projection projecting on an inner side of the endless track. Each guide projection comprises a top end and a wheel-facing side for facing wheels of the work vehicle, such as roller wheels that roll on the inner side of the endless track. The wheel-facing side comprises a recess to impede passage of grit between the wheel-facing side and a portion of the elastomeric material in the recess. This can enhance a wear resistance of the endless track.

Abstract: A rubber crawler (1) has a plurality of parallel metal links (11) embedded at regular distances from each other in circumferential direction of a rubber belt (22) and extending in the lateral direction of the rubber belt (22), each metal link (11) including a first (3) and second (13) protrusion at opposing sides (6, 16) of a sprocket (15) provided with an upper surface (7, 17) for guiding supporting rollers, extending in a height direction of the metal link (11) with respect to a base (5), each protrusion (3, 13) including a first (4) and a second (14) running surface element which extends in the longitudinal direction of the crawler (1), in which the second running surface element (14) is positioned shifted in longitudinal and the lateral direction of the belt (22) with respect to the first running surface element (4), in which the first (4) and the second (14) running surface of adjacent metal links (11) are positioned at least partially adjacent with respect to each other in the longitudinal direction, wh

Abstract: A rubber track (1) has formed in it simple means that can carry a part of abnormal tensile force acting on substantially the entire length in the circumferential direction of the rubber track (1). The construction secures smooth operation of the rubber track and reliably prevents cutting of a steel cord (s1) due to such abnormal tensile force. A core (3) has an engagement section (3b) located in the center region in the longitudinal direction of the core, guide projections (3a) on the outer sides of the guide projections (3a). The core (3) further has tensile force carrying sections (4a, 4b) arranged at positions that are located in the thickness direction of the core and are closer to the outer periphery of the rubber track than the outer peripheral-side d-surfaces of the wing sections (3c). The tensile force carrying sections (4a, 4b) carry tensile force acting in the lateral direction of the core and also carry pressing force acting in the thickness direction of the core.

Abstract: A core bar for a rubber crawler capable of enhancing the durability of the rubber crawler by preventing an end-cutting phenomenon in which cracking is generated at the end of the core bar in a crawler lateral direction of the core bar embedded in the rubber crawler when the rubber crawler rides over a curbstone at the road shoulder of a paved road, stones and obstacles on irregular ground, and is pressed in a lateral direction. In the core bar (1) constituting the rubber crawler (3) and embedded in a rubber crawler body (3a), an enlarged width part (2) is formed by elongating the longitudinal end part of the core bar (1) beyond the width dimension of the core bar.

Abstract: An offset track forms a pattern perpendicular to the centerline of the track which enables tracks to be formed with even or odd number of metal inserts and thus accommodate virtually any tracked vehicle. The offset track uses variations in body thickness and lug width to provide a high performance offset track with improved ride, minimum vibration and longer wear. Use of full size and mini-inserts in a single track minimizes the weight and further enhances the performance of an offset track.

Abstract: A rubber crawler which reduces all conventionally occurring drawbacks by forming rubber lugs to the outer peripheral surface so as to correspond to protrusion meshing positions that are susceptible to external flaws or cracking, with significantly enhanced durability of the rubber crawler. In a rubber crawler with metal cores provided at front and rear with protrusions for wheel fall-off prevention, in which the metal cores are buried at a fixed pitch along the longitudinal direction of a rubber elastic body and the wheel fall-off prevention protrusions of adjoining metal cores mesh with each other, rubber lugs are formed to the outer peripheral surface so as to correspond to the meshing portions of the wheel fall-off prevention protrusions. 1—metal core, 2,3—protrusions, 5a, 5b rubber lugs, 6—sprocket engagement hole.

Abstract: Disclosed is an elastic crawler formed with an elastic material in the shape of an endless track, and used as the wheel for the work vehicle with enhanced reliability and durability. The elastic crawler includes a crawler body 2A formed with an elastic material and having lugs 4L, 4R, 5L and 5R protruded at the ground contact side thereof, and cores 3 having wings 3L and 3R extended left and right to the center of the crawler body in the width direction thereof, and arranged parallel to each other in the longitudinal track direction of the crawler body such that the wings face the lugs formed at the crawler body. The crawler body has first and second lug units alternately arranged parallel to each other in the longitudinal tract direction thereof (in the direction of Y1 and Y2). The first lug unit has left lugs 4L facing each other over two wings, and rights lugs 4R arranged right to the center of the crawler body while proceeding symmetrical to the left lugs around the center.

Abstract: A rubber crawler has a structure in which connecting members are sequentially fitted onto wing portions adjacent to each other without using steel cords for resisting tensile force applied to the rubber crawler. Accordingly, the rubber crawler of the present invention has excellent characteristics in that breakage of steel cords due to the tensile force can be prevented, and torsion of the rubber crawler can be reduced.

Abstract: Disclosed is an elastic crawler formed with an elastic material in the shape of an endless track, and used as the wheel for the work vehicle with enhanced reliability and durability. The elastic crawler includes a crawler body formed with an elastic material and having lugs protruded at the ground contact side thereof, and cores having wings extended left and right to the center of the crawler body in the width direction thereof, and arranged parallel to each other in the longitudinal track direction of the crawler body such that the wings face the lugs formed at the crawler body. The crawler body has first and second lug units alternately arranged parallel to each other in the longitudinal track direction thereof. The first lug unit has left lugs facing each other over two wings, and right lugs arranged right to the center of the crawler body while proceeding symmetrical to the left lugs around the center.

Abstract: The object of the present invention is to provide a rubber crawler in which a shape of the central lug viewed from a lateral side of the rubber crawler is approximately in the form an arc. Therefore, at a time of driving of the rubber crawler repeating back and forth movement, even if a large resisting force from the road surface due to an impediment, such as gravel, is subjected to the central lug particularly disposed close to a sprocket engagement section, the resisting force can be parried for dispersion to a suitable degree by such arrangement, so that there is no possibility of early peel occurring in the central lug or such peeling is prevented from extending to tread members connected thereto; thus, the life is prolonged.

Abstract: A tread pattern for a vehicle track, such as an endless track for earth moving equipment, comprises a plurality of groups of tread lugs. Each group of tread lugs may comprise one or more tread lugs defining a generally “S” shape or a variation thereof. A vehicle track comprising the tread pattern may also comprise a support core that is substantially centered with a center of a group of tread lugs.

Abstract: A rubber crawler track in which a local side displacement is more effectively prevented to effectively prevent wheel run-off, which can reduce traveling vibration, and in which separation of metal cores is prevented for improved durability of the rubber crawler track and for reduced costs. The expression of ?r?r?2?r is satisfied, with “r” being the distance, in the circumferential direction of the rubber crawler track, between ends of horizontal protrusions (6) facing each other between adjacent metal cores (3) embedded in a rubber crawler body in a horizontal state of the rubber crawler track, “h” being the distance from a steel cord (5) layer embedded in the rubber crawler body to the core metal horizontal protrusions (6), and ?r being a value obtained by ?r=2?h/n where “n” is the number of sprocket teeth of a traveling device.

Abstract: Even if track rollers roll both on the left and right of rubber protrusions, bias cords are not broken, whereby cracking or chipping of rubber and rusting or cutting of the main cords resulting from cracking or chipping of the rubber are prevented.

Abstract: The present invention relates to a rubber crawler including: a joint formed by joining together opposite ends of a crawler body comprising an elastic member shaped like a belt having the opposite ends; and lugs projected at predetermined space intervals along a longitudinal direction of the belt and arranged on an outer circumferential surface of the crawler body. The joint is disposed on the outer circumferential surface of the crawler body, as located in a ground non-engaging portion and at different positions with respect to the longitudinal direction of the belt, the ground non-engaging portion defining an area excluding the lugs. In this way, stress acting on the joint is distributed or reduced.

Abstract: A rubber crawler track (1) has an endless rubber belt-shaped rubber crawler track main body (2) formed of a rubber elastic body and core metal pieces (3) embedded in the rubber crawler track main body (2) at predetermined intervals in a circumferential direction of the rubber crawler track, wherein a high hardness intermediate rubber layer track main body (2) is provided from below at least the ground contacting surface side of an end portion in a length direction (rubber crawler track width direction) of the core metal pieces (3) toward outside the end portion in a width direction of the rubber crawler track. The rubber elastic body of the rubber crawler track main body (2) is formed in a multiply layered structure with at least two or more layers.

Abstract: A core bar for a rubber crawler includes: right and left wing parts; an engaging part for connecting the wing parts; right and left protrusions to guide a rolling wheel; and right and left outside rails that are formed on outer sides of the right and left protrusions, respectively, and have overhanging parts extending in the widthwise direction of the wing part. The overhanging part is formed on an edge portion thereof with a surface that slants downward from a top surface of the outside rail.

Abstract: The present invention is an elastic flat tread which can prevent an elastic solid from cracking even if the vehicle runs on a protruding object during traveling. For this purpose, the elastic flat tread is provided with any core (1, 11, 115) of a core (1, 11) attached to a link (6) and a core (115) attached to a metal plate (9A) which is attached to a link (8), and end portions (1a, 1b; 11a, 11h; 115a, 115b) in a longitudinal direction of the aforesaid any core (1, 11, 115) are bent toward the side not in contact with the around.

Abstract: The present invention is an elastic flat tread which can prevent an elastic solid from cracking even if the vehicle runs on a protruding object during traveling. For this purpose, the elastic flat tread is provided with any core (1, 11, 115) of a core (1, 11) attached to a link (6) and a core (115) attached to a metal plate (9A) which is attached to a link (8), and end portions (1a, 1b; 11a, 11h; 115a, 115b) in a longitudinal direction of the aforesaid any core (1, 11, 115) are bent toward the side not in contact with the ground.

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 urethane rubber belt covering and being attached to a ground opposing surface of each of the core metal plates. The urethane rubber belt extends continuously over all of the core metal plates. The urethane 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 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: It is possible to achieve a light structure by making a part of a core bar thin and to prevent an elastic body from strain deforming by a smooth rib reinforcing portion from which an edge portion of the core bar does not protrude. It is possible to achieve a strength even when piercing a hole in the core bar and to prevent the elastic body from being cut by an edge portion of a hole. Accordingly, in a core bar (10) of an elastic body track shoe fastened to each pair of joint links of a crawler by bolts, recess portions (1a, 1b) formed in a substantially inverse-trapezoidal shape or recess portions (10a, 10b) formed in a substantially inverse-trapezoidal shape toward front end portions are formed in non-grounded surface sides of right and left wing portions in a direction of a crawler width. A recess portion (1e) formed in a substantially inverse-trapezoidal shape or a through hole (1f) may be formed in a center portion.

Abstract: A core bar for a rubber crawler includes: right and left wing parts; an engaging part for connecting the wing parts; right and left protrusions to guide a rolling wheel; and right and left outside rails that are formed on outer sides of the right and left protrusions, respectively, and have overhanging parts extending in the widthwise direction of the wing part. The overhanging part is formed on an edge portion thereof with a surface that slants downward from a top surface of the outside rail.

Abstract: It is possible to achieve a light structure by making a part of a core bar thin and to prevent an elastic body from strain deforming by a smooth rib reinforcing portion from which an edge portion of the core bar does not protrude. It is possible to secure a strength even when piercing a hole in the core bar and to prevent the elastic body from being cut by an edge portion of a hole. Accordingly, in a core bar (10) of an elastic body track shoe fastened to each pair of joint links of a crawler by bolts, recess portions (1a, 1b) formed in a substantially inverse-trapezoidal shape or recess portions (10a, 10b) formed in a substantially inverse-trapezoidal shape toward front end portions are formed in non-grounded surface sides of right and left wing portions in a direction of a crawler width. A recess portion (1e) formed in a substantially inverse-trapezoidal shape or a through hole (1f) may be formed in a center portion.

Abstract: It is possible to achieve a light structure by making a part of a core bar thin and to prevent an elastic body from strain deforming by a smooth rib reinforcing portion from which an edge portion of the core bar does not protrude. It is possible to secure a strength even when piercing a hole in the core bar and to prevent the elastic body from being cut by an edge portion of a hole. Accordingly, in a core bar (10) of an elastic body track shoe fastened to each pair of joint links of a crawler by bolts, recess portions (1a, 1b) formed in a substantially inverse-trapezoidal shape or recess portions (10a, 10b) formed in a substantially inverse-trapezoidal shape toward front end portions are formed in non-grounded surface sides of right and left wing portions in a direction of a crawler width. A recess portion (1e) formed in a substantially inverse-trapezoidal shape or a through hole (1f) may be formed in a center portion.

Abstract: A rubber crawler has a core of generally parallelepiped blocks (5) each having two longitudinally spaced through holes (9) in the lower surface region and bars (4) inserted in the through holes (9), the generally parallelepiped blocks (5) being arranged in two series, with the blocks of one of the series laterally overlapping the blocks of the other series, and with sprocket engaging holes (2) disposed therebetween, and the bars (4) being inserted in alternately corresponding through holes (9) in adjacent generally parallelepiped blocks (5), the bars (4) being connected within the generally parallelepiped blocks (5), the bars (4) being connected within the generally parallelepiped blocks (5) and embedded in the rubber crawler.

Abstract: This invention relates to a molded crawler track comprising metallic core bars set in an endless rubber belt. The core bars comprise first and second wings (2, 4) extending in a transverse direction to the axis of the track and, between the wings, a sprocket part (3) which is engaged by a drive sprocket. A protrusion (5, 15) is provided on either side of the sprocket part, i.e. protruding out of the plane of the wings towards the guide wheel for the track. The protrusions serve to guide the track over the guide wheels. The protrusions are inclined; one forward, one towards the rear; The relative dimensions of the elements of the core bars, are given. This combination of features reduces the occurrence of fatigue fractures and cracks in the belt.

Abstract: The present invention is an elastic flat tread which can prevent an elastic solid from cracking even if the vehicle runs on a protruding object during traveling. For this purpose, the elastic flat tread is provided with any core (1, 11, 115) of a core (1, 11) attached to a link (6) and a core (115) attached to a metal plate (9A) which is attached to a link (8), and end portions (1a, 1b; 11a, 11h; 115a, 115b) in a longitudinal direction of the aforesaid any core (1, 11, 115) are bent toward the side not in contact with the ground.

Abstract: The present invention is an elastic flat tread which can prevent an elastic solid from cracking even if the vehicle runs on a protruding object during traveling. For this purpose, the elastic flat tread is provided with any core (1, 11, 115) of a core (1, 11) attached to a link (6) and a core (115) attached to a metal plate (9A) which is attached to a link (8), and end portions (1a, 1b; 11a, 11h; 115a, 115b) in a longitudinal direction of the aforesaid any core (1, 11, 115) are bent toward the side not in contact with the around.

Abstract: With the objective of providing an elastic crawler shoe capable of securing desired ground contact pressure on an icy road or a pressed snow road, thereby preventing a skid, a ground contact face of an elastic body which is bonded to a core bar so as to cover the core bar has grooves, and a central ground contact face in a longitudinal direction of the elastic crawler shoe is provided with stepped parts relative to end portions thereof so as to be protrusively stepped.

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: A rubber crawler includes an endless rubber belt directed around two toothed wheels, whereby in the circumferentrial direction of the rubber belt parallel metal core elements are embedded in the rubber belt and extend in cross direction of the rubber belt and are provided for guiding supporting rolls provided between the toothed wheels, each metal core element includes a guiding for guiding the supporting rolls and a carrier for receiving the guiding, and the carrier and the guiding are made as separate parts and are connected to each other.

Abstract: With the objective of providing an elastic crawler shoe which is capable of discharging snow which gets into a space between crawler belt links before a packing phenomenon occurs, a projection which is made of an elastic material is provided so as to protrude into the space which is enclosed by the right and left crawler belt links and front and rear connecting pins.

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 first and second longitudinal faces. A guiding brace is provided adjacent at least one of the associated first and second longitudinal faces of at least one of the drive lugs. The guiding brace 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 also include a reinforcing brace having flanges that further protect the longitudinal faces.

Abstract: It is possible to achieve a light structure by making a part of a core bar thin and to prevent an elastic body from strain deforming by a smooth rib reinforcing portion from which an edge portion of the core bar does not protrude. It, is possible to secure a strength even when piercing a hole in the core bar and to prevent the elastic body from being cut by an edge portion of a hole. Accordingly, in a core bar (10) of an elastic body track shoe fastened to each pair of joint links of a crawler by bolts, recess portions (1a, 1b) formed in a substantially inverse-trapezoidal shape or recess portions (10a, 10b) formed in a substantially inverse-trapezoidal shape toward front end portions are formed in non-grounded surface sides of right and left wing portions in a direction of a crawler width. A recess portion (1e) formed in a substantially inverse-trapezoidal shape or a through hole (1f) may be formed in a center portion.

Abstract: An inner periphery driving type rubber crawler comprises: a plurality of core metals buried in series in the rubber crawler along the longitudinal direction thereof such that the longer sides of each core metal are in parallel with the transverse direction of the crawler; a plurality of steel cords buried in the rubber crawler such that they surround the outer periphery of the core metals; a pair of horns which protrude from each core metal toward the inner side of the rubber crawler and which have a shape longer in said transverse direction than said longitudinal direction; and rubber members which cover sides of said horn in said longitudinal direction. The paired horns and the associated rubber members form a pair of driving protrusions. A sprocket of a driving wheel is inserted between the driving protrusions and is engaged with the protrusions via driving pins for transferring driving force to the rubber crawler.

Abstract: A rubber crawler has a rubber elastomer constituting a main body of the crawler, at least one metal core buried in the rubber elastomer and extending in a widthwise direction perpendicular to a running direction of the crawler, and at least one rubber lug formed on an outer peripheral face of the rubber elastomer. An element is applied to each widthwise end of the metal core to improve the durable life of the crawler.

Abstract: A rubber crawler has a rubbery elastomer constituting a main body of the crawler. At least one metal core is buried in the rubbery elastomer and extending in a widthwise direction perpendicular to a running direction of the crawler. At least one rubber lug is formed on an outer peripheral face of the rubber elastomer. A specified configuration is applied to each widthwise end of the metal core to improve the durable life of the crawler.

Abstract: A connecting link type rubber crawler mounted to the traveling unit of a mobile construction machine, wherein fallout of the crawler and sinking of turning wheels hardly occur.

Abstract: The present invention relates to a highly elastic rubber crawler mounted on a mobile working machine, the crawler having improved durability, easily passing around a drive wheel and inflicting no damage on a paved road surface. Specifically, a highly elastic rubber crawler defines engageable holes in the main body of the crawler into which the tops of teeth of a drive wheel are fitted, engageable portions between engageable holes for meshing with the roots of the teeth of the drive wheel, projections at both sides of the engageable portion for preventing the drive wheel from falling off the crawler, and lugs projecting from an outer peripheral surface.