A ball bearing slide assembly includes a first slide, a second slide, a slide-aiding member, and a positioning member. The first slide is slidably received in the second slide. The second slide defines a receiving hole. The slide-aiding member is sandwiched between the first slide and the second slide....http://www.google.fr/patents/US7794029?utm_source=gb-gplus-shareBrevet US7794029 - Ball bearing slide assembly
