Patent ID: 7543409

Claim:
A pull comprising: a fixing portion fixed on a stopper stile of a closure supported slidably within a frame, said frame comprising a head, a sill, and a first jamb, and a second jamb; an operating portion disposed adjacent said fixing portion, said operating portion being linearly slidable relative to said fixing portion along an operating axis, said operating axis being substantially parallel to an opening direction of said closure; and a turning portion supported by said fixing portion and said turning portion turns while said operating portion slides, a first end of said turning portion being turnably linked with said operating portion, wherein: said stopper stile is in contact with said first jamb of said frame while said closure is closed; by sliding said operating portion along said operating axis in a direction away from said first jamb, a second end of said turning portion is turned and projects towards said first jamb and abuts against said first jamb, and said turning portion biases said closure to move the closure away from said first jamb; said operating portion is linked to said fixing portion through a parallel maintenance member disposed adjacent said fixing portion, said parallel maintenance member maintaining an orientation of said operating portion during sliding of said operating portion along said operating axis; wherein said parallel maintenance member comprises a link, a middle portion of said link being turnably linked with said turning portion, one end of said link being turnably linked with said fixing portion and another end of said link being turnably linked with said operating portion.