The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 02, 2010
Filed:
Nov. 23, 2005
Larry W. Kiest, Jr., Ottawa, IL (US);
Jason Bartlett, Lamar, MO (US);
Thomas M. O'sullivan, Iii, Lamar, MO (US);
Raymond L. Greek, Lamar, MO (US);
Timothy L. Back, Cincinnati, OH (US);
Donald L. Betzold, Marseilles, IL (US);
Larry W. Kiest, Jr., Ottawa, IL (US);
Jason Bartlett, Lamar, MO (US);
Thomas M. O'Sullivan, III, Lamar, MO (US);
Raymond L. Greek, Lamar, MO (US);
Timothy L. Back, Cincinnati, OH (US);
Donald L. Betzold, Marseilles, IL (US);
LMK Enterprises, Inc., Ottawa, IL (US);
O'Sullivan Trenchless Installation Services, Lamar, MO (US);
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.