Abstract: An elastic crawler having a crawler body formed of a rubber elastic material into an endless belt so that rollers rotatively move on right and left side regions on an inner surface of the crawler body is provided with a reinforcement provided extending outwardly in a thickness direction of the crawler body in an area of the crawler body extending at least partially under said right and left ends of each of the rollers. The prevents the elastically bendable side regions from being cracked when either of the side regions of the elastic crawler is bent about an axis that extends in a circumferential direction of the crawler.

Abstract: A pneumatic tire includes a carcass folded turned up around a bead core, a belt layer arranged outside of a crown portion of the carcass to have an overlapping portion with the carcass folded portion, a first reinforcing rubber layer arranged between a carcass body portion and the carcass folded portion, and a second reinforcing rubber layer arranged inside the carcass body portion, wherein an overlapping width W1 from an upper end position RE of the first reinforcing rubber layer to an end BE of the belt layer is specified; an overlapping width W2 from an upper end position RF of the second reinforcing rubber layer to the end BE of the belt layer is specified; and thickness RW of the second reinforcing rubber layer on a line TL connecting the end BE of the belt layer and a tread end TE is specified.

Abstract: An elastic crawler having a crawler body formed of a rubber elastic material into an endless belt so that rollers rotatively move on right and left side regions in an inner surface of the crawler body is provided with a reinforcement rising in a thickness direction of the crawler body in an area on an outer peripheral surface of the crawler body corresponding to right and left ends of the roller.

Abstract: A pneumatic tire, includes at least one carcass ply having a steel cord arranged substantially in a radial direction of the tire, folded turned up around a bead cord, a belt layer arranged on an outer side of a crown portion of the carcass ply to have an overlapping portion with the folded portion of the carcass, a first reinforcing rubber layer arranged between body portion of the carcass ply and the folded portion of the carcass ply, and a second reinforcing rubber layer arranged inside the body portion of the carcass ply, over a region corresponding to a tire shoulder portion to a bead portion, with its thickness gradually reduced from a central portion to opposing end portions, wherein overlapping width W2 from an upper end position RF of the second reinforcing rubber layer to an end BE of the belt layer is 7% to 33% of the width BW of the belt layer; and cross sectional widths G1W, G2W, and G3W representing minimum widths between an inner surface of the tire and respective side-wall outer surface positio

Abstract: In a resilient crawler of this invention, sufficient flexibility at the portion between the lugs is obtained and such problems as separation of rubber are prevented while improving riding comfort by reducing the difference in rigidity between the portion where the lug is formed and the portion between the lugs, and improving lateral rigidity to assure the tractive force. Therefore, a resilient crawler of the present invention comprises a crawler body formed of a resilient material in the shape of an endless belt and having a multiplicity of lugs projecting from the outer peripheral surface at intervals longitudinally along the crawler body; and a multiplicity of linear lateral reinforcing members disposed in the crawler body so as to extend laterally thereof and be arranged longitudinally therealong.

Abstract: A rolling wheel support structure for crawler traveling apparatus includes rotary shafts rotatably supporting rolling wheels which roll on a ground contacting side of an inner circumferential surface of an endless crawler, a track frame supporting the rotary shafts thereon, and a buffer member formed of an elastic material and provided between the track frame and a rotary shaft.

Abstract: In a resilient crawler of this invention, sufficient flexibility at the portion between the lugs is obtained and such problems as separation of rubber are prevented while improving riding comfort by reducing the difference in rigidity between the portion where the lug is formed and the portion between the lugs, and improving lateral rigidity to assure the tractive force. Therefore, a resilient crawler of the present invention comprises a crawler body formed of a resilient material in the shape of an endless belt and having a multiplicity of lugs projecting from the outer peripheral surface at intervals longitudinally along the crawler body; and a multiplicity of linear lateral reinforcing members disposed in the crawler body so as to extend laterally thereof and be arranged longitudinally therealong.

Abstract: A pneumatic tire, includes at least one carcass ply folded turned up around a bead cord, a belt layer arranged on an outer side of a crown portion of the carcass ply to have an overlapping portion with the folded portion of the carcass, a first reinforcing rubber layer arranged between body portion of the carcass ply and the folded portion of the carcass ply, and a second reinforcing rubber layer arranged inside the body portion of the carcass ply, wherein overlapping width W2 from an upper end position RF of the second reinforcing rubber layer to an end BE of the belt layer is 7% to 33% of the width BW of the belt layer; and cross sectional widths G1W, G2W, and G3W satisfy the following relations: G3W/G1W=0.85 to 0.95, and G2W/G1W=1.0 to 1.05.

Abstract: A core bar for a rubber crawler includes: right and left wing parts; an engaging part for drive; right and left protrusions for preventing the coming-off of 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 slanting surface downwardly slanting from a top surface of the outside rail.

Abstract: An elastic crawler traveling apparatus having an elastic crawler in a shape of an endless belt, a sprocket for a crawler belt arranged to be brought into contact with an inner face of the elastic crawler, a driven wheel, and a rolling wheel, the elastic crawler including a belt main body, a plurality of projections formed to project at intervals along a peripheral direction on an inner face of the belt main body, and a tension member embedded at an inner portion of the belt main body for restricting elongation of the belt main body, in which the sprocket has a contact portion to contact the belt main body and a contact width of the contact portion in a belt width direction of the elastic crawler is wider than a root width of the projection in the belt width direction.

Abstract: An elastic crawler including a crawler body (6) made of a rubbery elastic material in a form of an endless belt, and a tension cord (10) being buried in the crawler body (6) along the circumferential direction A thereof and having opposite ends (10a),(10b) which are joined together by overlapping one upon the other so as to arrange the tension cord (10) as an endless cord having an overlapped joint portion (12). The overlapped joint portion (12) of the tension cord (10) is formed into an arcuate shape protruding on the outer circumferential side of the crawler.

Abstract: An elastic crawler has a crawler body formed like an endless belt out of an elastic material, a plurality of driving projections provided on an inner circumferential surface of the crawler body with a predetermined pitch in the circumferential direction thereof, and a plurality of traction lugs provided on an outer circumferential surface of the crawler body with a pitch different from that of the driving projections.

Abstract: A light conducting plate and a back lighting device provided with the light conducting plate, in which the luminance in a light-outlet face is made uniform by disposing, on a reflecting face having a light-scattering region and the remainder region on the side near to and/or the side distant from a light-inlet end face to reduce the degree of scattering in the remainder region, or by surface-roughening the light-inlet end face to remove the dark line caused by imaging of the light-inlet end face.

Abstract: A crawler motor vehicle includes a pair of crawler belts trained around drive rear wheels and idle wheels which are rotatably mounted on the motor vehicle body. The crawler motor vehicle also has a pair of front wheels having respective tires and rotatably mounted on the motor vehicle body such that the front wheels will be subject to a camber thrust in the same negative direction as the negative direction of a camber thrust applied to the crawler belts.