A ball bearing rail assembly includes a first slide member (100), a second
slide member (200), and a plurality of ball bearings (300) movably
retained in the first slide member. The first slide member includes a plurality
of spoon-like tabs (12), each tab forming a recessed portion (120)
at a free end thereof. A plurality of slots (14) is defined in the first
slide member, each slot having a generally oval end portion (140). The recessed
portions of the tabs fittingly and resiliently press the ball bearings against
the first slide member at the oval portions of the slots respectively. Each ball
bearing is partially exposed out of the first slide member at a corresponding oval
portion of the slot. The second slide member is slidably engaged with the exposed
portions of the ball bearings. Thus the first slide member can be reliably moved
relative to the second slide member.
