| 摘要 |
<p>The brace bar comprises two sections 2, 3 one of which slides inside the other to adjust the overall length of the brace bar. The ends of the sections are plates which contact a door frame. The plates may include screw holes 5 for allowing screws or nails to pass through and secure the brace to the door frame. The length of the brace bar can be fixed by using locking nut 4.</p> |
