| 摘要 |
<p>The invention relates to a door hinge comprising two hinge members one affixed to the door and the other to the door frame connected together by two jointing levers and a spring loaded roller engaging one of the levers, the mounting of the roller on the spring member symmetrically with respect to the longitudinal center line of the door hinge member to apply downward pressure on the hinge member of the door during closing when engaged by one of the levers.</p> |
