Patent ID: 7748799

Claim:
A drive device for assisting opening movement of a furniture part relative to a furniture body, comprising: a first member to be fixed to one of the furniture part and the furniture body; a second member operable to engage and disengage said first member; and an energy storage member connected to said second member, said energy storage member being operable to apply an opening force to said second member for moving said first member in an opening direction when said first member is engaged with said second member to thereby move the furniture part toward a fully open position relative to the furniture body, said energy storage member being operable to apply the opening force over only a part of an entire path of movement of the furniture part relative to the furniture body, said energy storage member being arranged so as to be at least partly discharged by moving the furniture part towards the fully open position, and so as to be recharged when the furniture part is moved in a closed direction; wherein said energy storage member comprises a spring; and wherein said second member comprises a rocker segment connected to said spring, and said first member comprises an entrainment member for being coupled releasably to said rocker segment, said entrainment member being arranged to engage said rocker segment and thereby tension said spring during movement of the furniture part in the closed direction, wherein said rocker segment is operable to release said entrainment member when reaching a self-locking stand-by position.