发明授权
- 专利标题： Manhole cover venting and precipitation guarding devices
- 专利标题（中）： 人孔盖通风和降水防护装置
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申请号： US14024221申请日： 2013-09-11
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公开(公告)号： US08851791B1公开(公告)日： 2014-10-07
- 发明人: David Putnam
- 申请人： David Putnam
- 代理商 R. Keith Harrison
- 主分类号： E02D29/14
- IPC分类号： E02D29/14 ; E03F5/08
摘要：
A manhole cover venting and rain guarding device for a manhole cover having an exterior manhole cover surface and an interior manhole cover surface includes a device housing adapted for attachment to the manhole cover. The device housing includes manhole cover venting and precipitation guarding device includes a device housing adapted for attachment to the manhole cover, the device housing including a head portion having a head portion surface adapted to protrude beyond an entire plane of the exterior manhole cover surface and a device bore extending through the head portion and adapted to communicate with the interior manhole cover surface of the manhole cover.
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