Homer Libengood from Blairsville, PA

Underground Filling And Sealing Method
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US Patent:

7806631, Oct 5, 2010
Filed:

Apr 17, 2007
Appl. No.:

11/787629
Inventors:

Eric W. Smith - Mars PA, US
Homer D. Libengood - Blairsville PA, US
International Classification:

E02D 3/12
US Classification:

405267, 405266, 405270, 166292
Abstract:

The present invention is directed to a method for filling and sealing underground voids and the like with use of a grout comprising aggregate coated with a water-activated expanded hydrophobic polymeric resin, such as polyurethane.

Underground Filling And Sealing Method
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US Patent:

8585328, Nov 19, 2013
Filed:

Aug 24, 2010
Appl. No.:

12/862222
Inventors:

Eric W. Smith - Mars PA, US
Homer D. Libengood - Blairsville PA, US
International Classification:

E02D 3/12
US Classification:

405267, 405266, 405270, 166292
Abstract:

The present invention is directed to an underground opening that is filled and sealed with grout comprising an aggregate coated with water-activated, expanded hydrophobic polymeric resin.

Dispensing Device And Method
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US Patent:

20050205599, Sep 22, 2005
Filed:

Mar 19, 2004
Appl. No.:

10/804892
Inventors:

Eric Smith - Mars PA, US
Homer Libengood - Blairsville PA, US
International Classification:

G01F011/00
US Classification:

222001000
Abstract:

A dispensing device and method, especially adapted for use in sealing high pressure fluid leaks, is disclosed. Such use requires high pressure dispensing of sealant. Such sealants are formed by an exothermic reaction of at least two liquid substances that generates high pressures within the dispensing device. Such pressures could potentially harm the feeding system of the device due to pressure backflow. This problem is solved by providing a check valve in the mixing and reaction chamber of the device to protect the feeding system. A static mixer is disposed within the chamber to enhance mixing and reaction of the substances.

Rock Bolt Sealing System
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US Patent:

20130236251, Sep 12, 2013
Filed:

Sep 8, 2012
Appl. No.:

13/607684
Inventors:

Eric W. Smith - Mars PA, US
Homer D. Libengood - Blairsville PA, US
International Classification:

E21D 21/00
E21D 20/02
US Classification:

4052595
Abstract:

The present invention is directed to sealable rock bolts that prevent water leakage through the bolt, a kit containing portions of such bolts prior to assembly, installation, and use, and a method of using such sealable rock bolts. Such rock bolts are fastened in place in a roof, wall, or bottom of an underground region via pressure fitting or the like. The rock bolt contains a sealing unit that contains a liquid water activated, expandable hydrophobic pre-polymeric resin. The sealing unit has side, top, and bottom portions that are degradable by water to permit the resin to expand upon contact with water and to seal the bolt to prevent water passage through the bolt.

Homer Libengood