| http://www.w3.org/ns/prov#value | - As illustrated in FIG. 4, the aforementioned guide member 17 iscomposed of: a cushion member 17b which is made of a resilient material such as synthetic rubber, Moltplain as an example, the thickness of which is adequate; and a low friction member 17a which is made of a low friction material such as Teflon, whereinthe low friction member 17a adheres to the cushion member 17b.
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