Timothy L Back

US Patent:

20070113519, May 24, 2007

Filed:

Nov 23, 2005

Appl. No.:

11/286652

Inventors:

Larry Kiest - Ottawa IL, US
Jason Bartlett - Lamar MO, US
Thomas O'Sullivan - Lamar MO, US
Raymond Greek - Lamar MO, US
Timothy Back - Cincinnati OH, US
Donald Betzold - Marseilles IL, US

Assignee:

LMK ENTERPRISES, INC. - Ottawa IL

International Classification:

E04B 1/00

US Classification:

052741300, 052745090, 052741410

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.

US Patent:

20100018631, Jan 28, 2010

Filed:

Oct 1, 2009

Appl. No.:

12/571707

Inventors:

JASON BARTLETT - LAMAR MO, US
RAYMOND L. GREEK - ORONOGO MO, US
TIMOTHY L. BACK - CINCINNATI OH, US
DONALD L. BETZOLD - MARSEILLES IL, US

Assignee:

LMK ENTERPRISES, INC. - OTTAWA IL
O'SULLIVAN TRENCHLESS INSTALLATION SERVICES - LMAR MO

International Classification:

B32B 37/02
E21D 11/00

US Classification:

156 94, 4051501

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.

US Patent:

20140202570, Jul 24, 2014

Filed:

Mar 20, 2014

Appl. No.:

14/220625

Inventors:

Jason Bartlett - Lamar MO, US
Raymond L. Greek - Oronogo MO, US
Timothy L. Back - Cincinnati OH, US
Donald L. Betzold - Marseilles IL, US

International Classification:

F16L 55/165

US Classification:

138 98

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.