| 摘要 |
A guide bearing assembly is disclosed which is capable of being thoroughly cleaned. A linear actuating embodiment includes a reciprocating shaf t with first and second spools axially spaced a predetermined distance. Each spool has an associated guide bearing surface taking the form of a cylindrical bore, with the bores axially spaced a distance greater than the axial distance between spools so that when one spool is in engagement with its guide bore, the opposite spool is out of eng agement with its guide bore. A rotary bearing embodiment includes a rotatable shaft havi ng first and second spools with each spool having a plurality of angularly spaced lobes. The lobes cooperate with complementing guide bearing surfaces on a guide sleeve. Th e lobes of one spool are angularly spaced relative to the lobes of a second spool, so that with the lobes of the first spool in engagement with their guide surfaces, the l obes of the second spool are disengaged, and vice versa.
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