Invention Grant
- Patent Title: Free venting pipe and method of manufacture
- Patent Title (中): 自由排气管及其制造方法
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Application No.: US11640340Application Date: 2006-12-18
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Publication No.: US08714204B2Publication Date: 2014-05-06
- Inventor: Michael J. Bryant
- Applicant: Michael J. Bryant
- Applicant Address: US TX Houston
- Assignee: DeepFlex Inc.
- Current Assignee: DeepFlex Inc.
- Current Assignee Address: US TX Houston
- Agency: Osha Liang LLP
- Main IPC: F16L11/00
- IPC: F16L11/00

Abstract:
A free venting pipe and method of forming same, comprising a permeable tubular core member with at least one permeable hoop reinforcement layer around the core member; a substantially non-permeable membrane layer positioned outside of the hoop reinforcement layer and at least one permeable tensile reinforcement layer positioned outside of the membrane layer whereby a free volume annulus does not exist between any of the layers of the free venting pipe. The hoop and tensile reinforcement layers are comprised of a laminate construction.
Public/Granted literature
- US20080145583A1 Free venting pipe and method of manufacture Public/Granted day:2008-06-19
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