9 results about "Ground contact" patented technology

A structurally supported tire includes a ground contacting annular tread portion, an annular shear band and at least one spoke disk connected to the shear band, wherein the spoke disk has at least two spokes, wherein each spoke extends between an outer ring and an inner ring, wherein one of the spokes extends from the outer ring to the inner ring in a curved manner. The second spoke extends from the outer ring to the inner ring in a straight manner.

A toplift comprising a toplift main body composed of two layers consisting of a soft synthetic resin layer ¢I! and a hard synthetic resin layer and, projecting from the toplift main body, a mounting pin. The ground contact surface of the toplift consists of the soft synthetic resin layer ¢I!, and the soft synthetic resin layer ¢I! and the hard synthetic resin layer are joined together by fitting together of projecting and indented portions. As the ground contact surface consists of the soft synthetic resin layer ¢I!, slipping in walking can be prevented. As the junction is made by fitting together, the durability of the toplift main body is excellent.

The invention discloses a rubber track. One part of a self-help device is embedded in a track body. The track body comprises an annular track body and a plurality of traveling teeth; the self-help device comprises an embedded fastener and a self-help iron ring; the embedded fastener is embedded in the annular track body; the self-help iron ring is fixed with the embedded faster and as high as the traveling teeth. As the self-help iron ring is embedded in the track body, the self-help iron ring is used as the traveling teeth for a machine employing such a track, for example, a rotary cultivator, during normal plowing. When the rotary cultivator sinks into a blind ditch, only the track needs to be adjusted such that the self-help iron ring on at least one side is exposed, and then a standby self-help steel pipe is inserted into the self-help iron ring to increase a ground contact area of the track and improve a force applying condition between the track and the ground; a sludge resistance to the steel pipe serves as a power for the track to move forwards, and then the rotary machine is capable of realizing self-help. Compared with an existing self-help way, the self-help method is simple to operate, time-saving and labor-saving, and therefore, the self-help efficiency is greatly improved.