| 摘要 |
An assembly for attaching a first and second wheel adjacent an object suitable for rolling movement, according to particular embodiments, comprises: (1) an axle defining a first end and a second end defining at least one recess, (2) a clip comprising a first clip portion defining an elongated channel, a second clip portion defining an opening, and a biasing mechanism that is adapted for biasing the first clip portion toward a first position. The first end of the axle is adapted for supporting the first wheel when the assembly is attached adjacent the object. The clip is adapted to facilitate maintaining the second wheel in a substantially fixed lateral position by positioning the second wheel adjacent the object and sliding the clip adjacent the axle's second end so that a portion of the clip defining the elongated channel engages the portion of the axle defining the recess.
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