STEPHEN GERARD SAWYER
Land Surveyors in Washington
License number
Pennsylvania SU000602A
Category
Engineers
Type
Professional Land Surveyor
Address
Address
2
Washington
Canonsburg, PA 15317
Canonsburg, PA 15317
Professional information
Pumpable Support With Cladding
US Patent:
2011026, Oct 27, 2011
Filed:
Apr 21, 2011
Appl. No.:
13/091849
Inventors:
David A. Hussey - Glenwood Springs CO, US
Stephen G. Sawyer - McMurray PA, US
George A. Watson - Prosperity PA, US
Stephen G. Sawyer - McMurray PA, US
George A. Watson - Prosperity PA, US
Assignee:
Micon - Glassport PA
International Classification:
E21D 15/44, E21D 15/00
US Classification:
405289, 405288
Abstract:
A support for use in mines and other underground workings is provided comprising a flexible inflatable bag configured for receiving a pumpable load-bearing material. A reinforcing material is provided for supporting the bag when the bag is filled with the load-bearing material. The reinforcing material can include reinforcing plates, rings, bands or barrels positioned about the outer periphery of the bag. Alternatively, the support can be formed from a plurality of stackable barrels that are filled with load-bearing material but without the inflatable bag. The barrels can include internal reinforcing or cladding material at spaced locations along the barrels to define controlled deflection zones. According to another design, the support can be designed to be extensible. The support is inexpensive to transport, can be erected on-site and has a reinforced structure with residual yield strength. A method for supporting a mine or other underground workings is disclosed.
Mine Seal With Adhesive
US Patent:
2011001, Jan 20, 2011
Filed:
Jan 14, 2009
Appl. No.:
12/812525
Inventors:
George A. Watson - Prosperity PA, US
David A. Hussey - Glenwood Springs CO, US
Stephen G. Sawyer - McMurray PA, US
David A. Hussey - Glenwood Springs CO, US
Stephen G. Sawyer - McMurray PA, US
Assignee:
MICON - Glassport PA
International Classification:
E02D 29/02
US Classification:
405284
Abstract:
An explosive-resistant mine seal () is provided, which includes a pair of block walls (). An adhesive () is provided between adjoining surfaces of the blocks () where the adhesive () has greater strength properties than the blocks () themselves. A core member (′) is provided between the two walls () and is bound thereto. The adhesive () may be coated over the walls () to increase the strength of the mine seal ().
Mine Seal With Adhesive
US Patent:
8342776, Jan 1, 2013
Filed:
Jun 6, 2008
Appl. No.:
12/134679
Inventors:
George Anthony Watson - Prosperity PA, US
David A. Hussey - Glenwood Springs CO, US
Stephen Gerard Sawyer - McMurray PA, US
David A. Hussey - Glenwood Springs CO, US
Stephen Gerard Sawyer - McMurray PA, US
Assignee:
Micon - Pittsburgh PA
International Classification:
E21D 9/00
US Classification:
405147, 405144, 405152, 299 12
Abstract:
An explosive-resistant mine seal, which includes a pair of block walls. An adhesive is provided between adjoining surfaces of the blocks where the adhesive has greater strength properties than the blocks themselves. A core member is provided between the two walls and is bound thereto. The adhesive may be coated over the walls to increase the strength of the mine seal.