公开(公告)号：US5678353A

公开(公告)日：1997-10-21

申请号：US370432

申请日：1995-01-09

申请人： Emily Tsao ,  Chein-Hwa Tsao ,  Stephen K. Chan

发明人： Emily Tsao ,  Chein-Hwa Tsao ,  Stephen K. Chan

IPC分类号： A01G13/02 ,  E01F15/04

CPC分类号： A01G13/0281 ,  E01F15/0469

摘要： A grass guard for forming a vegetationless border around a perimeter of an object, such as a lawn sprinkler head, is described. One particular embodiment consists of a two layer construction. The top layer is a plastic sheet simulating grass. The bottom layer is made of a heavy grit bonded into a uniform body with a polymer. The layers form a relatively thin, weather resistant, plastically compliant disk with a center hole for stretch, self-adjusting fit over a pre-installed sprinkler head. The device is also easily cut through with a knife to fit various head locations. The bottom layer has an outside vertical edge with a top rounded corner enclosing the top layer to prevent edge delamination or fraying. An adhesive is provided to bond the grass guard to the neck of the sprinkler head to eliminate gap formation around the head. A hammering board can be used to facilitate the installation. Optionally, pre-watering the vicinity of the sprinkler head until the ground is softened from moisture further simplifies the installation and enhances the quality. In general, the device can be used to guard against the growth of vegetation next to any physical objects with the proper tailoring of geometry and choice of associated manufacturing process.

摘要翻译： 描述了围绕物体周边形成无植被边缘的草地保护板，例如草坪洒水头。 一个具体实施例由两层结构组成。 顶层是模拟草的塑料片。 底层是用聚合物结合成均匀体的粗砂粒制成的。 这些层形成相对薄的，耐候性，塑性柔顺的盘，其中心孔用于拉伸，自调节装配在预先安装的喷洒头上。 该装置也可以用刀轻松切割以适应各种头部位置。 底层具有外部垂直边缘，顶部圆角包围顶层以防止边缘分层或磨损。 提供粘合剂以将草坪护罩连接到喷头的颈部以消除头部周围的间隙形成。 可以使用锤板来方便安装。 可选地，预喷洒喷洒头附近，直到地面从湿气中软化来进一步简化安装并提高质量。 一般来说，该设备可用于防止任何物理物体旁边的植被生长，并适当调整几何形状并选择相关的制造过程。