Patent ID: 7243394

Claim:
A door closing hinge device comprising: a first flap and a second flap for attaching to a door frame and a door panel respectively, a seat attached to said first flap and including an inclined surface provided on top thereof, a housing attached to said second flap and including a chamber formed therein, a follower slidably disposed in said chamber of said housing, and including an inclined surface provided on bottom thereof, for engaging with said inclined surface of said seat, and for moving said follower up and down relative to said housing when said follower and said housing are rotated relative to said seat, means for guiding said follower to move up and down relative to said housing and to prevent said follower from being rotated relative to said housing, and means for forcing said follower and said housing and said door panel to rotate relative to said door frame and said first flap back to an original position where said inclined surfaces of said seat and said follower are engaged with each other, said forcing means including a casing secured in said housing, a rod slidably and rotatably received in said casing and having a lower end secured to said follower, to allow said rod to be moved up and down or in and out of said casing by said follower.