Patent ID: 8277003
Filing Date: 2012-10-02
Classification: A47B

Abstract:
1. A drawer slide assembly comprising: a first rail comprising a first web and a first bearing raceway opposite a second bearing raceway; a second rail comprising a second web, a first leg and a second leg both extending away from the second web along longitudinal margins thereof, and a flange extending from the first leg toward the second leg, wherein the flange includes a groove, wherein a first fold interconnects the first leg to said second web, wherein a third bearing raceway is defined by said first fold and wherein a second fold interconnects the second leg to said second web, wherein a fourth bearing raceway is defined by said second fold; a third rail comprising a first upright wall partially housed between the first and second legs of the second rail, a spur extending from the first upright wall toward the first leg of the second rail, wherein the spur includes a groove, the third rail further comprising a third web extending from the first upright wall and a second upright wall extending from the third web, the third web extending away from the first rail and the second rail such that the second upright wall is positioned outside the first rail and the second rail; and a first bearing cage having ball bearings each running in the groove of the flange of the second rail and the groove of the spur of the third rail for providing at least lateral support to at least one of said second and third rails; a second bearing cage separate from the first bearing cage having bearings running between the second web of the second rail and the spur of the third rail; and at least a third bearing cage separate from the first and second bearing cages and placed between the first rail and second rail, the third bearing cage at least partially housing ball bearings slidably coupling the first rail and the second rail, wherein a first set of said ball bearings slidably coupling the first rail and the second rail are guided by the first and third bearing raceways and a second set of said ball bearings slidably coupling the first rail and the second rail are guided by the second and fourth bearing raceways for providing support to at least one of said first and second rails along two directions.