| 摘要 |
A support member 10 for a rotatable element 42 comprising at least two pairs of ribs 30 , 32 attached to opposing sides 22 of the support member 10 , each pair of ribs 30, 32 adapted to receive guide walls 38 of a housing for the rotatable element 42 tightly therein; a supporting end 18 between the opposing sides 22 into which the rotatable element 42 can be received and supported along its axial length; and a retaining end 20 between the opposing sides 22 , and opposite the supporting end 18 , adapted to restrict axial movement of the rotatable element 42 when received within the supporting end 18.
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