Invention Grant
- Patent Title: Inflatable tunnel seal
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Application No.: US12789682Application Date: 2010-05-28
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Publication No.: US09611739B2Publication Date: 2017-04-04
- Inventor: Philip L. Lundman
- Applicant: Philip L. Lundman
- Agency: Michael Best & Friedrich LLP
- Main IPC: E21D9/06
- IPC: E21D9/06 ; E21F17/107
Abstract:
A tunnel seal including a body, inflatable from a folded position to an inflated position, multiple positioning straps coupled to the body, an inflow port fluidly connected to the body, a pressure relief valve fluidly connected to the body, and a hot stab receptacle fluidly connected to the inflow port.
Public/Granted literature
- US20110135395A1 INFLATABLE TUNNEL SEAL Public/Granted day:2011-06-09
Information query
