Invention Grant
- Patent Title: Method of repairing a manhole chimney using a stretchable sleeve
- Patent Title (中): 使用可拉伸套筒修理人孔烟囱的方法
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Application No.: US11286652Application Date: 2005-11-23
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Publication No.: US07670086B2Publication Date: 2010-03-02
- Inventor: Larry W. Kiest, Jr. , Jason Bartlett , Thomas M. O'Sullivan, III , Raymond L. Greek , Timothy L. Back , Donald L. Betzold
- Applicant: Larry W. Kiest, Jr. , Jason Bartlett , Thomas M. O'Sullivan, III , Raymond L. Greek , Timothy L. Back , Donald L. Betzold
- Applicant Address: US IL Ottawa US MO Lamar
- Assignee: LMK Enterprises, Inc.,O'Sullivan Trenchless Installation Services
- Current Assignee: LMK Enterprises, Inc.,O'Sullivan Trenchless Installation Services
- Current Assignee Address: US IL Ottawa US MO Lamar
- Agency: McKee, Voorhees & Sease, P.L.C.
- Main IPC: F16L55/26
- IPC: F16L55/26 ; F16L55/18

Abstract:
A method of repairing and renewing a manhole chimney utilizes a circumferentially stretchable liner sleeve which is inserted into the manhole and pressed by an inflatable bladder into engagement with the walls of the manhole chimney. The sleeve is coated with an uncured resin, which is allowed to cure as the sleeve is pressed against the chimney walls, thereby attaching the sleeve to the walls of the manhole chimney. The stretchable sleeve eliminates air spaces between the sleeve and the chimney walls, and precludes formation of undesirable folds in the sleeve. The sleeve stretches circumferentially up to 150% of its unstretched diameter, while having a substantially unstretchable length.
Public/Granted literature
- US20070113519A1 Method of repairing a manhole chimney using a stretchable sleeve Public/Granted day:2007-05-24
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