| 摘要 |
<p>A post (14) to be releasably secured to a concrete slab or flight of stairs, the post (14) includes an upper hollow tubular portion (75) that telescopically receives a lower portion (77). Extending between the upper portion (75) and lower portion (77) is a threaded shaft (20) that is actuated to cause movement between the upper portion (75) and lower portion (77) to aid in securing the post (14) to the supporting structure. The upper portion (75) is also provided with a threaded shaft (21) and the lower portion (77) with a clamp member (18) between which the concrete slab of flight of stairs is secured.</p> |
