Patent ID: 8256853

Claim:
An opening device for a slide assembly, comprising: a first rail; a second rail which is movable in longitudinal direction relative to the first rail; a stationary member fixed to the first rail and comprising a first end and a second end which is located opposite to the first end, a longitudinal portion located between the first and second ends; a swing member pivotably connected to the second end of the stationary member and comprising a pin portion; a pusher longitudinally connected to the longitudinal portion of the stationary member; a first resilient member connected to the pusher; an engaging member pivotably connected to the second rail and comprising a first end and a second end which is located opposite to the first end, a first wall, a second wall, a third wall, a connection wall, a block and a positioning leg located between the first and second ends, the connection wall extending from the first end and connected to the first wall, the second wall and the third wall, the first wall and the block defining a first path, the block and the third wall defining a second path, the block having an engaging surface and a guide portion defined in two ends thereof, the first wall, the second wall and the connection wall defining a first slot, the second wall, the third wall and the connection wall defining a second slot which faces the second path, the first wall comprising a first guide surface facing a portion of the first path, the first path located corresponding to a portion of the first slot, the second wall comprising a second guide surface facing the engaging surface of the block, the engaging surface having an inclined surface extending therefrom which faces a portion of the first slot, the third wall comprising a third guide surface, the positioning leg extending from the second end of the engaging member and contacting a portion of the second rail, a second resilient member connected between the first end of the engaging member and the second rail, and when the second rail is retracted relative to the first rail, the engaging surface of the block of the engaging member is engaged with the pin portion of the swing member, when the second rail is pulled out relative to the first rail, the engaging member overcomes a force between the second resilient member and the positioning leg, and pivots on the second rail, the engaging surface of the block of the engaging member is disengaged from the pin portion of the swing member, the positioning leg and the second resilient member return the engaging member relative to the second rail.