Single fill point plant protector with integral vent

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专利权人:

Bovington Thomas P.

发明人:

Bovington Thomas P.

申请号：

US201715818447

公开号：

US9955634(B1)

申请日:

2017.11.20

申请国别(地区):

美国

年份:

2018

代理人:

摘要：

A fill tube for a water filled plant protector is formed by folding the top edge of the outer wall of the protector between the inner and outer walls and capturing the edge with the welds that create the vertical columns. The protector is filled through a port in the tube. Air is vented as the columns fill with water through the open top of each column.

来源网站：

中国工程科技知识中心

来源网址：

http://www.ckcest.cn/home/