| http://www.w3.org/ns/prov#value | - Additional objects and advantages will be apparent to those skilled in the art from the following detailed descriptions of the preferred embodiments and drawings thereof, wherein: FIG. 1 is a vertical section of a nonsteering embodiment; FIG. 2 is a vertical end section of the assembly of FIG. 1, partially broken away to show features of construction; FIG. 3 is a vertical section of a wheel equipp
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