Abstract: The object of the present invention is to provide a rubber crawler having reduced vibration during running and further good soil-grasping property and soil-discharging property as well as improved durability.

Abstract: The object of the present invention is to provide a rubber crawler having high traction force and excellent straight-ahead driving property and further improved durability by ensuring good soil-grasping property and soil-discharging property of the crawler body. The rubber crawler 1 has a crawler body 10 and a plurality of metal cores 30 buried in the crawler body and lugs 13 provided on an outer periphery side with they being divided into left and right sides across the central portion, the lugs divided into left and right sides being arranged in zigzag alignment with shifting of phase in a circumferential direction of the crawler body, wherein a contact area of the each lug 13 is divided into a central lug portion 20 and an outer lug portion 22.

Abstract: A gasoline engine powered snowboard having an endless track trained about a support frame containing driven and idler wheels. Engine operation is directed from an upright operator support column. A molded chassis is hinge coupled to pivot about alternative contoured track support pan assemblies. The pan support assemblies cooperate with flexible track surfaces (e.g. fringe or pleat members) and foot supports to enable steering with foot and body movements. A lower support pan exhibits convex edge surfaces that contact track pleats or fringe pieces and includes an elliptic longitudinal channel. Alternative upper support pans provide a reciprocating wheeled steering plate, longitudinal drive lug channels and contoured snow diversion surfaces and/or an agitator. Internal track surfaces include UHMW pieces at or aligned to the drive lugs. Ground contact lugs exhibit traction promoting and snow clearing contoured profiles, shapes and recesses.

Abstract: The object of the present invention is to provide a rubber crawler having reduced vibration during running and further good soil-grasping property and soil-discharging property as well as improved durability.

Abstract: The object of the present invention is to provide a rubber crawler having high traction force and excellent straight-ahead driving property and further improved durability by ensuring good soil-grasping property and soil-discharging property of the crawler body. The rubber crawler 1 has a crawler body 10 and a plurality of metal cores 30 buried in the crawler body and lugs 13 provided on an outer periphery side with they being divided into left and right sides across the central portion, the lugs divided into left and right sides being arranged in zigzag alignment with shifting of phase in a circumferential direction of the crawler body, wherein a contact area of the each lug 13 is divided into a central lug portion 20 and an outer lug portion 22.

Abstract: A coreless rubber crawler has a tension body embedded in an endless rubber elastic body in the longitudinal direction thereof, lugs (7) formed at the outer peripheral surface of the elastic body, central projections (2) formed at the center in a width direction of the inner peripheral surface of the elastic body at regular intervals in a longitudinal direction of the elastic body, and drive projections (5, 6) engaging with sprockets and formed at both outer sides in a width direction of the inner peripheral surface of the elastic body at the same intervals as the central projections. Elongated detachment preventing projections (2A) that engage with rolling wheels (20) are formed such that the pitch between the central projections (2) is larger than the pitch between the drive projections (5, 6).

Abstract: An individual replacement drive or guide lug for missing or worn lugs located on an inner circumference of various endless rubber tracks used on multi-surface vehicles. The lug comprises a body and a fastening including a bolt and washer. To install the drive lug properly, an inner surface of the track where the original vulcanized rubber drive lug was located must be prepared. When the original drive lug fails, it leaves an irregular surface and must be ground flat with the inner track belt substrate. The bolts are then secured through the track and the lug so as to removably secure the lug to the inner surface of the track.

Abstract: An individual replacement drive or guide lug for missing or worn lugs located on an inner circumference of various endless rubber tracks used on multi-surface vehicles. The lug comprises a body and a fastening including a bolt and washer. To install the drive lug properly, an inner surface of the track where the original vulcanized rubber drive lug was located must be prepared. When the original drive lug fails, it leaves an irregular surface and must be ground flat with the inner track belt substrate. The bolts are then secured through the track and the lug so as to removably secure the lug to the inner surface of the track.

Abstract: An endless belt body for a track assembly, comprising through holes, between traction lugs of the ground-engaging surface thereof, along a length thereof, located in at least one of: i) the central region of a width of the endless belt body, and ii) on the lateral parts of the width of the endless belt body.

Abstract: A gasoline engine powered snowboard having an endless track trained about a support frame containing driven and idler wheels. A molded chassis having alternative contoured track support pans cooperate with flexible track surfaces (e.g. fringe or pleat members) and forward and rear foot supports to enable steering with foot and body movements. Engine operation is directed from an upright operator support column and directed servos coupled to the engine. One support pan exhibits a beveled contour and includes a recessed elliptic channel; another supports a reciprocating plate and steering wheels. Slit fringe members and pleats along right and left peripheral track edges cooperate with the pan contours and/or wheels to steer the vehicle. UHMW covered drive lugs and formed UHMW stiffener surfaces project from internal track surfaces. Ground contact lugs exhibit contoured thickness profiles, elongated, inverted V-shapes and include recesses.

Abstract: A rubber track has lugs (12A, 12B) formed on its outer peripheral surface in two rows of a first row and a second row that are arranged with the same pitch in the circumferential direction, and the rubber track also has guide juts formed on its inner peripheral surface at the equal intervals. Ends (13A, 13B), located in the center part in the lateral direction of the track, of the lugs (12A, 12B) are superposed on a projection area of a guide jut (16). Because the ends (13A, 13B) are superposed on the projection area of the guide jut (16) having high rigidity, the ends bend less than other portions when the track is wrapped around a sprocket etc. This prevents concentration of strain at the ends (13A, 13B), and as a result, cracks in the ends (13A, 13B) of the lugs (12A, 12B) are prevented.

Abstract: An individual replacement drive or guide lug for missing or worn lugs located on an inner circumference of various endless rubber tracks used on multi-surface vehicles. The lug comprises a body and a fastening including a bolt and washer. To install the drive lug properly, an inner surface of the track where the original vulcanized rubber drive lug was located must be prepared. When the original drive lug fails, it leaves an irregular surface and must be ground flat with the inner track belt substrate. The bolts are then secured through the track and the as to removably secure the lug to the inner surface of the track.

Abstract: A coreless rubber crawler has a tension body embedded in an endless rubber elastic body in the longitudinal direction thereof, lugs (7) formed at the outer peripheral surface of the elastic body, central projections (2) formed at the center in a width direction of the inner peripheral surface of the elastic body at regular intervals in a longitudinal direction of the elastic body, and drive projections (5, 6) engaging with sprockets and formed at both outer sides in a width direction of the inner peripheral surface of the elastic body at the same intervals as the central projections. Elongated detachment preventing projections (2A) that engage with rolling wheels (20) are formed such that the pitch between the central projections (2) is larger than the pitch between the drive projections (5, 6).

Abstract: A crawler belt is disclosed herein having an endless steel belt (high-tensile-strength belt) and a belt main body made of rubber and attached around an outer periphery of the steel belt. The steel belt has engagement holes arranged at even intervals in a circumferential direction thereof. The belt main body has escape recesses formed therein. A wheel has projections arranged at even intervals in a circumferential direction on an outer peripheral surface thereof. The projections are adapted to be engaged with the engagement holes of the steel belt and at the same time to enter the escape recesses of the belt main body.

Abstract: The present invention relates to a crawler without steel cores (hereinafter referred to as “coreless crawler”), which is used for transporting means of caterpillar vehicles for construction, civil engineering, agricultural use or the like. More particularly, this invention relates to a coreless crawler, in which a first and second separation preventing cables, having the same but opposite directional oblique angle, form a unitary layer by being woven, thereby improving the flexibility and increasing binding forces between the cables, so that separation of the crawler can be effectively prevented.

Abstract: A coreless rubber crawler track has an endless rubber elastic body (1), steel cords (3) embedded in the longitudinal direction of the elastic body, rubber protrusions (2) formed at a constant interval from the inner peripheral surface toward the longitudinal direction of the elastic body, and rubber lugs formed on the outer peripheral surface. Bias cords (5, 6) are arranged on the outer peripheral side of the steel cords (3) so as to extend to the lateral right and left in the directions opposite from each other. Both bias cords (5, 6) are overlapped on each other over a width of 10 mm or more directly under the rubber protrusions. With such an arrangement, torsional rigidity and lateral rigidity of the rubber crawler track are improved and, even when the rubber crawler track is passed over sprockets etc., bending rigidity is not high and a tooth skip phenomenon is suppressed.

Abstract: The present invention provides a rubber crawler in which tooth skipping does not occur even if a large load acts on a rubber protrusion (5), and in which surface pressure on the rubber protrusion (5) is reduced. The coreless rubber crawler includes an endless rubber elastic body, a tensile material (3) buried in the longitudinal direction thereof, a rubber lug (4) formed at an outer circumferential surface of the rubber elastic body, and rubber protrusions (5) further formed at an inner circumferential surface of the rubber elastic body at a constant pitch in the longitudinal direction thereof, wherein raised step portions (6a) are formed to the right and left of the rubber protrusions (5) in the width direction of the rubber crawler, and a linear groove (7a) is formed between raised step portions that are adjacent to each other in the longitudinal direction of the rubber crawler so as to be continuous to base portions of the rubber protrusions when the rubber elastic body is seen in side view.

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: The invention is a conversion kit for converting a conventional two-wheeled vehicle, such as a bicycle or motorcycle, into a tracked vehicle for use on snow, mud and sand. The kit converts the vehicle without major modifications to the vehicle, and the vehicle may be converted back to two-wheeled use easily. The tracked version is powered by the original vehicle drive system, and uses the vehicles braking and suspension system.

Abstract: This invention relates to an endless traction band that is used to propel band laying vehicles [i.e., vehicles which use endless traction bands rather than tires to contact the terrain over which they are driven, e.g., tractors, tanks, bulldozers, etc.]. A novel sprocket wheel having a plurality of radially extending and offset teeth cooperates with an endless traction band having a plurality of holes. Longitudinally consecutive holes define either meshing areas or clip areas. The meshing areas are adapted to be engaged by the sprocket wheel and the clip areas are adapted to support clips.

Abstract: A track assembly for moving a vehicle which includes a track having lugs including both drive and guide portions on its inner surface. The guide portions substantially abut against the track rollers of the assembly. Such abutment maintains alignment of the track between those rollers so as to prevent it from moving from side to side and interfering with feeding of the drive portions onto the assembly drive sprocket. Further, the guide portions grab against the drive sprocket to maintain contact of the drive portions therewith. Each of the above functions permits uninterrupted movement of the vehicle since the track is enabled to move in a continued path.

Abstract: A track drive system for a mobile irrigation system adapts to either centrally pivoted circular or linear mobile systems, as desired. A first embodiment has a single drive wheel with opposed first and second end guide wheels, surrounded by a single narrow track. A single drive motor and gear reduction drive, drives the central wheel. The central wheel is of considerably larger diameter than the two end guide wheels, and simultaneously contacts the track with both its upper and lower peripheries at all times. The mechanism is articulated to allow independent wheel movement relative to one another, thus providing better traction over uneven surfaces. The central drive wheel is always in contact with both the upper and lower track portion to provide continuous drive traction for the device. A second embodiment includes additional idler wheels between the two end wheels and the central drive wheel.

Abstract: In an elastic endless crawler comprising an annular belt-shaped elastic crawler body, according to the present invention, the crawler body comprises a series of driven elements for operation of the crawler and a reference plane, which reference plane passes through respective centers of the drive elements and extends in a longitudinal direction of the crawler, and a thickness of one side relative to the reference plane and a thickness of the other side relative to the reference plane are different from one another. Preferably, lengths between respective crawler body end surfaces facing in a crawler widthwise direction, and the reference plane are different from one another. Further, preferably, a thickness of one side, which is shorter in length, of the crawler body is greater than that of the other side, which is longer in length, of the crawler body.

Abstract: An endless belt for use with a heavy duty track vehicle comprises a body made of polymeric material wherein a series of longitudinally spaced guide members are integrally formed to the inner surface thereof while two rows of longitudinally spaced tread members are integrally formed to the outer surface thereof. Each tread member in each row has an outer edge area adjacent the outer edge of the body and an inner edge area terminating substantially at mid-section of the body. Each tread member of the first row is longitudinally offset relative to an adjacent tread member of the second row. Each inner edge area of the tread members is in vertical alignment with a corresponding one of the guide members of the inner surface of the body. This particular geometry of tread members and drive members is such as to reduce slitting damages to the track when driven.

Abstract: In a rubber crawler, lags are generally are formed on the outer surface of an endless belt-like elastomer, and rubber projections for transmission of driving force and prevention of the rubber crawler from coming of off from a wheel are formed on the inner surface of the elastomer at regular pitches. Rein forcing cord layers are embedded in the elastomer along its longitudinal direction. An abrasion resistant member is embedded in the rubber projection along the width direction of the rubber crawler. Its both end portions are exposed at the sides of the rubber projection. The abrasion-resistant member has a central portion having a small diameter and a pair of end portions connected to the ends of the central portion and having a large diameter. In the exposed portion of the end portion which is exposed at the side surface of the rubber projection, its most interior portion in the radial direction is positioned above the base portion of the rubber projection.

Abstract: An improved system in an endless track unit of an all-terrain vehicle. A track is driven with a drive wheel that has sprocket disks drivingly engaging the track with more than two teeth from those disks drivingly engaging the track at any given time. The track is trained around the drive wheel and a plurality of undriven guide wheels. A damper wheel may sit downstream of the drive wheel between the drive wheel and the first guide wheel and supports the underside of the track. A preferred embodiment has a sprocket disk with thirteen cogs that have a generally tear-shaped cross section forming teeth of the sprocket, more than two of which drivingly engage a stretch-resistant track at any given time. The track a continuous belt formed of molded rubber with stretch-resistant chords imbedded therein.

Abstract: A metal core for a rubber crawler, wherein an engaging part with a sprocket is provided at the center thereof, wherein horn members are provided at the outsides of the engaging part, wherein right and left wing parts are provided at the outsides of the horn members, wherein concave parts are formed by intercepting the engaging part lengthwise and crosswise by a rib, and wherein inner surfaces of the right and left horn members are inclined at a fixed angle to the wing portion of the metal core in a top view.

Abstract: There is provided a rubber track used for an undercarriage of a vehicle, and particularly an improvement in a guide lug which protrudes from an inner peripheral surface of the rubber track. In the rubber track in which a plurality of rubber lugs are formed on an outer peripheral surface of an endless rubber elastic body and a plurality of guide lugs are formed on an inner peripheral surface of the elastic body, the guide lugs being used for transmission of driving force or prevention of detracking between the guide lugs, and track rollers, idlers or sprockets, a heat-resisting thermoplastic resin member having low friction properties, a heat-resisting thermosetting resin member having low friction properties, or a resin member having a Barcol hardness (A type) of 40 degrees or less is exposed at one or more surfaces of each of the guide lugs, the surface or surfaces contacting other member.

Abstract: A bearing for use with a snowmobile track is disclosed. The bearing includes an axle surrounded by a sleeve which is free to rotate when the snowmobile track is driven by the machine. The rails of the suspension systems of the snowmobile ride on the rolling surface resulting in reduced friction. The bearing can be used in a clip on the track or can be included in the track itself.

Abstract: The noise generated by a snowmobile track in operation can be reduced and attenuated by arranging for the track elements such as the drive lugs and ground-engaging lugs to have a degree of non-uniformity in their repeating pattern and thus to avoid the generation of peak noise levels at particular frequencies.

Abstract: Prestressed compressible drive blocks are positioned on an endless belt of a track machine. The blocks are mateable with openings in drive wheel and function for driving the track and for guiding the track. Drive bars are associated with the drive wheel openings for exerting pressure on the drive/guide bars while maintaining the drive/guide bars against excessive wear.

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.

Abstract: A remote-control apparatus for operating a plurality of audio visual apparatuses. On a display screen a plurality of icons showing functions and operation modes of audio visual apparatuses are displayed. An audio visual apparatus is selected and operated by pointing out an icon with a cursor. The cursor is shifted to predetermined positions on the display screen by manipulating one of several switches on the remote control apparatus. The shiftable destination of the cursor with respect to a switch is determined by a set of predetermined rules in which the relation between the switches and the destination of the cursor is changed based on the present position of the cursor.