| 摘要 |
<p>PCT No. PCT/AU91/00475 Sec. 371 Date Jun. 14, 1993 Sec. 102(e) Date Jun. 14, 1993 PCT Filed Oct. 15, 1991 PCT Pub. No. WO92/06610 PCT Pub. Date Apr. 30, 1992.An anchorage device for use in sand or sandy soils. The device comprises a shank portion (2) and a spike portion (4) at a lower end of the shank portion. The spike portion (4) comprises a first and second pair of downwardly convergent plates (6,18), the second pair of plates (18) extending from a position above the upper ends of the first plates (6) to a position beneath the upper ends of the first plates to funnel sand into the zone between the interior surfaces of the first plates (6). The sand thereby trapped between the plates anchors the spike portion (4) within the ground. The device may be used for example for anchoring beach umbrellas, tents and fences in sand or sandy soil.</p> |
