| 摘要 |
<p>A roof safety device includes a fixed arm having a generally arched portion and a first cross-beam, a hook-slide slidably cooperating with the arched portion of the fixed arm. The hook-slide also includes a second cross-beam. The roof safety device includes a means for removeably locking the hook-slide into fixed engagement with the fixed arm. A harness is connected to the fixed arm and worn by a user of the roof safety device.</p> |
