Abstract: An elastic crawler capable of effectively preventing an occurrence of vibration, noise and cracks during driving while improving durability is provided. The elastic crawler includes a coupling portion arranged at equal intervals in a circumferential direction at a center in a left and right direction of a crawler body, a steel core arranged in the left and right direction between adjacent coupling portions in the circumferential direction of the crawler body, and two rows of left and right lugs installed on an outer periphery of the crawler body, wherein each of the rows of the lugs includes driving lugs arranged in an oblique direction with respect to the steel core, and each of the driving lugs overlaps with two adjacent steel cores in the circumferential direction.

Abstract: Assembly of a rim and of a flexible adapter, intended to make up, with a tyre, a rolling assembly. The rim having a mounting well that is extended axially by a boss, a rim seat and a rim flange that extends the rim seat axially on the outside, with a bearing face of substantially radial orientation. The adapter having an axially inner end intended to rest on the rim seat, an axially outer end and a substantially cylindrical body that connects the axially inner end and the axially outer end and is intended to receive, in cooperation with the axially outer end, a tyre bead. The rim seat of the rim has an inclination relative to the axis of rotation of between ?2 and +6 degrees, the angle being counted as positive when the virtual vertex of the substantially frustoconical seat is situated axially on the outside.

Abstract: A track tension system including a hydraulic cylinder coupled between a drive frame and idler of a track system, an accumulator and a hydraulic valve that controls flow between the cylinder and accumulator. The cylinder extends and retracts to change the distance between the drive frame and idler which increases and decreases, respectively, tension on the track system. The hydraulic valve can be opened to allow flow between the cylinder and accumulator, and closed to block flow between the cylinder and accumulator. Control factors can be monitored to control valve position. An overload pressure relief can allow flow between the cylinder and accumulator when the hydraulic valve is closed and pressure in the cylinder reaches overload pressure. An orifice can allow constricted flow between the cylinder and accumulator when the hydraulic valve is closed. A check valve can connect the track tension system to a vehicle hydraulic system.

Abstract: An endless track vehicle with increased traction and/or installation, modification, and/or use of track cleats for traction for the endless track of the endless track vehicle. A body is mountable to the endless track exterior. The body defines bores extending from a first end of the body to a second end of the body, wherein the bores have counterbores. First and second cleats/bolts respectively having a cleat/bolt heads, the cleats/bolts mounted in respective bores and optional extending out a distance out of the second end of the body, wherein the cleat/bolt heads seat in the respective counterbores. Nuts may be used in the counterbores to optionally extend the cleats/bolts, and/or to secure and fasten the cleats/bolts.

Abstract: The railway wheel according to the present embodiment has a chemical composition consisting of: in mass %, C: 0.80 to 1.15%, Si: 0.45% or less, Mn: 0.10 to 0.85%, P: 0.050% or less, S: 0.030% or less, Al: 0.200 to 1.500%, N: 0.0200% or less, Nb: 0.005 to 0.050%, Cr: 0 to 0.25%, and V: 0 to 0.12%, with the balance being Fe and impurities, wherein at least in the microstructure of the rim part and the web part, the amount of pro-eutectoid cementite defined by Formula (1) is 2.00 pieces/100 ?m or less: Amount of pro-eutectoid cementite(pieces/100 ?m)=a total sum of the number of pieces of pro-eutectoid cementite which intersect with two diagonal lines in a square visual field of 200 ?m×200 ?m/(5.66×100 ?m)×100??(1).

Abstract: The present disclosure relates to a bicycle quick release device. The bicycle quick release device includes: an inner shaft; a lever connected to one end of the inner shaft, the lever being reciprocatively swingable between a release position and an urge position; an outer sleeve provided for the inner shaft to pass through, an outer circumferential face of the outer sleeve being provided with a sleeve body, an abutting portion disposed on one end of the sleeve body and an expansion portion disposed on the other end of the sleeve body, the expansion portion being provided with a plurality of axially extending sectioned grooves; an urging unit disposed between the lever and the abutting portion of the outer sleeve; and a tapered expansion unit connected to the other end of the inner shaft, an outer circumferential face of the tapered expansion unit being provided with a conical face.

Abstract: A wheel includes a spoke having a mounting hole that extends in a radial direction, and a blind hole that extends in an axial direction and that is in spatial communication with the mounting hole. The wheel includes a rim having a second through hole that is aligned with the mounting hole. The wheel further includes a connecting unit connecting the spoke with the rim. The connecting unit includes a rod extending through the through hole into the mounting hole and having an engaging hole that is aligned with the blind hole. The connecting unit further includes a fastener extending through the blind hole into the engaging hole and engaging with the engaging hole.

Abstract: The vehicle wheel cover retention system comprises a wheel including a first hub hole provided therein which has a retention member formed in a generally axially extending portion thereof. The wheel cover includes a second hub hole provided therein. The second hub hole includes an annular axially extending segmented projection. The segmented projection includes a chamfered outer circumferential surface and a shoulder provided thereon. During assembly, the segmented projection deflects radially inward as the wheel cover is initially installed and moved toward the retention member and then as the wheel cover is further advanced the segmented projection moves radially outward to enable the shoulder to engage the retention member to thereby secure the wheel cover to the wheel. The center cap includes an annular axially extending projection.

Abstract: A quick release structure includes a rod member, an arm member, a restriction member, and a pushing means. The rod member includes a toothed member having a plurality of rows of first teeth arranged spacedly thereon. The arm member has a plurality of rows of second teeth arranged spacedly on its inner peripheral surface. The arm member is sleeved on the toothed member and is axially slidable. The restriction member is disposed on the rod member. The pushing means is arranged between the rod member and the arm member to make the rows of first teeth and the rows of second teeth being engaged normally. When the arm member is moved axially to a rotation position, the rows of first teeth and the rows of second teeth are staggered and aligned alternately so that the arm member is rotatable relative to the rod member.