发明名称 Tree-protecting equipment against ground compacting - comprises load-bearing plates on frame secured to ground at intervals
摘要 The equipment protects trees against compacting of the ground, comprising a framework laid round the tree and supported from the ground at fixed points spaced apart. This consists of lengthwise and transverse struts (4) at regular intervals inside a frame (3), and on which load-bearing plates (12) are laid, covering the intervening spaces (5,9). There can be two mirror-image U-shaped frames, fitted together so as to leave a free space (7) in the middle for the tree trunk (8). ADVANTAGE - Prevents damage from passing or parked vehicles, while allowing sufficient air and water to reach roots.
申请公布号 CH675942(A5) 申请公布日期 1990.11.30
申请号 CH19880002650 申请日期 1988.07.12
申请人 A. TSCHUEMPERLIN AG 发明人 HAAS, LEO, DR.
分类号 E01C5/22;E01C9/00 主分类号 E01C5/22
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