Invention Grant
US08851791B1 Manhole cover venting and precipitation guarding devices 有权
人孔盖通风和降水防护装置

  • Patent Title: Manhole cover venting and precipitation guarding devices
  • Patent Title (中): 人孔盖通风和降水防护装置
  • Application No.: US14024221
    Application Date: 2013-09-11
  • Publication No.: US08851791B1
    Publication Date: 2014-10-07
  • Inventor: David Putnam
  • Applicant: David Putnam
  • Agent R. Keith Harrison
  • Main IPC: E02D29/14
  • IPC: E02D29/14 E03F5/08
Manhole cover venting and precipitation guarding devices
Abstract:
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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