A sprocket (10) is capable of engaging with engaging portions (22) on an elastic endless belt (21). On a tooth face (F) of a tooth (12) of the sprocket (10), a portion of a tooth base on at least one side of a center line (O.sub.1) of the tooth (12) is a tooth base surface (12b), and the tooth base surface (12b) is inclined relative to the center line (O.sub.1) of the tooth (12) at an angle (A.sub.1) in a range of 0° or greater to 7.5° or less so as to approach the center line (O.sub.1) of the tooth (12) towards a tooth tip surface (12d).

Provided is a lightweight crawler unit which is capable of swiveling, suitable for a trolley for bad roads, and used for transportation in muddy places such as snowy roads, sandy ground, and fields, and disaster sites. A crawler includes a plurality of inner attachments provided inside thereof toward a frame to have a band-shape, overhang edges 70 protruding in a left and right direction of a rail provided on a circumference of the frame, and overhang edges 34 protruding in a left and right direction of each of the inner attachments, in a space K enclosed between the overhang edges 34 facing each other, the overhang edges 70 are inserted, the overhang edges 34, 70 are set in a positional relation in which they overlap with each other in an up and down direction, and the crawler circulates around pulleys, while the inner attachments are restricted along the rail.

Provided is a lightweight crawler unit which is capable of swiveling, suitable for a trolley for bad roads, and used for transportation in muddy places such as snowy roads, sandy ground, and fields, and disaster sites. A crawler includes a plurality of inner attachments provided inside thereof toward a frame to have a band-shape, overhang edges 70 protruding in a left and right direction of a rail provided on a circumference of the frame, and overhang edges 34 protruding in a left and right direction of each of the inner attachments, in a space K enclosed between the overhang edges 34 facing each other, the overhang edges 70 are inserted, the overhang edges 34, 70 are set in a positional relation in which they overlap with each other in an up and down direction, and the crawler circulates around pulleys, while the inner attachments are restricted along the rail.

A drive track for a cleaning robot moving on inclined surfaces such as photovoltaic panels has a multilayer structure comprising: an internal layer formed by a continuous belt having an internal face able to engage with means for driving the track; an intermediate layer including a plurality of damping blocks disposed over the entire length of the continuous belt of the internal layer with a predefined separation (e); and an external running layer coming into contact with the surface on which the track moves, the running layer being formed by pads supported by the damping blocks. The damping blocks are made of elastomer material and have a cellular structure with a plurality of parallel trough-channels.

The present invention relates to a running gear chain (2), in particular a bogie chain (2), having a flexible body (20), preferably an elastomer body (20), which is closed in endless fashion, or closable in endless fashion, in a running direction (A). The running gear chain (2) according to the invention is characterized by a multiplicity of rigid transverse elements (24) which are connected to the outer side of the flexible body (20) and extend substantially transversely with respect to the running direction (A), wherein at least some of the rigid transverse elements (24), preferably all of the rigid transverse elements (24), are arranged so close together in the running direction (A) that, with a planar extent of the flexible body (20), two immediately adjacent rigid transverse elements (24) make contact in the running direction (A).

The present invention relates to a running gear chain (2), in particular a bogie chain (2), having a flexible body (20), preferably an elastomer body (20), which is closed in endless fashion, or closable in endless fashion, in a running direction (A). The running gear chain (2) according to the invention is characterized by a multiplicity of rigid transverse elements (24) which are connected to the outer side of the flexible body (20) and extend substantially transversely with respect to the running direction (A), wherein at least some of the rigid transverse elements (24), preferably all of the rigid transverse elements (24), are arranged so close together in the running direction (A) that, with a planar extent of the flexible body (20), two immediately adjacent rigid transverse elements (24) make contact in the running direction (A).

A track system for a vehicle (e.g., an all-terrain vehicle (ATV)) in which the track system is configured to enhance traction, floatation, and/or other aspects of its performance, such as, for example, to maintain proper contact with the ground (e.g., even if it is cambered) and/or to better absorb shocks when it encounters obstacles on the ground.

A track system for a vehicle (e.g., an all-terrain vehicle (ATV)) in which the track system is configured to enhance traction, floatation, and/or other aspects of its performance, such as, for example, to maintain proper contact with the ground (e.g., even if it is cambered) and/or to better absorb shocks when it encounters obstacles on the ground.

A belt for tracked vehicles suitable for being driven in a closed loop between a front wheel and a rear wheel of the vehicle along a longitudinal direction and for supporting a plurality of transverse bars adapted to stick in the ground along at least a portion of the lower run of the belt loop; the belt comprising a fabric multi-layer internal structure embedded in vulcanized rubber, wherein at least a portion of the fabric fiber of at least one layer is made of aramid.

A belt for tracked vehicles suitable for being driven in a closed loop between a front wheel and a rear wheel of the vehicle along a longitudinal direction and for supporting a plurality of transverse bars adapted to stick in the ground along at least a portion of the lower run of the belt loop; the belt comprising a fabric multi-layer internal structure embedded in vulcanized rubber, wherein at least a portion of the fabric fiber of at least one layer is made of aramid.