- 专利标题： Flow restrictor for installation in an underground conduit connected to an underground vault
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申请号： US16208120申请日： 2018-12-03
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公开(公告)号： US10883348B2公开(公告)日： 2021-01-05
- 发明人: Glen John Bertini , David C. Busby
- 申请人： Novinium, Inc.
- 申请人地址： US WA Kent
- 专利权人： Novinium, Inc.
- 当前专利权人： Novinium, Inc.
- 当前专利权人地址： US WA Kent
- 代理机构： Davis Wright Tremaine LLP
- 代理商 George C. Rondeau, Jr.; Heather M. Colburn
- 主分类号： E02D27/00
- IPC分类号： E02D27/00 ; F24F11/00 ; F24F13/02 ; F24F1/0073 ; E21B43/12 ; E21B21/08 ; E21B34/08 ; E21B47/12
摘要：
A flow restrictor for installation in a connection having a terminus opening into an underground vault. The flow restrictor includes an annular restriction device and a concentration member. The annular restriction device is configured to be installed in the annulus near the terminus opening and to restrict a flow of one or more gases through the annulus of the connection. The concentration member is configured to concentrate the flow and includes a through-channel configured to allow the concentrated flow to flow between the underground vault and the annulus.
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