| 摘要 |
The hinge comprises a flange attachable to a door jamb and a strap attachable to a door. A cam is fixed to the flange and a follower for said cam has a polygonal rod fixed thereto and protruding therefrom.The rod is insertable into a complementary through hole in the strap from either end of the hole so that the strap can be reversed 180 DEG with respect to the flange. The cam is symmetrical about a transverse diametric plane passing through the axis of the cam. The follower matches the cam. The strap can thus be attached to either a right hand or left hand door. Upon turning the door from closed to open position, the door rises due to coaction of cam and follower, and the door is self closing by gravity. |
