| 摘要 |
<p>A portable base 1 which is arranged to rest firmly on the ground and to support a post in an upright position comprises a socket 8 in its upper face 2 for receiving the lower end of the post. The socket wall contains four axially extending grooves 9, 10 each with a right-angled step 11 approximately mid-way along its length for co-operation with a radially projecting pin on the post to form a bayonet coupling for retaining the post in the socket. At the base of the socket 8 there are four integrally formed inwardly projecting resilient tabs 12 which are designed to be depressed by the lower end of the post when the bayonet coupling is engaged so that the tabs will exert an upward force on the post to hold the bayonet coupling in engagement. The base is made of PVC and is moulded in four identical parts 14 which are securely bolted together. The base is made fairly heavy and is intended primarily for use as the base of a temporary signpost which can easily be assembled and disassembled as required. <IMAGE></p> |
