Roland N Walker

US Patent:

6881015, Apr 19, 2005

Filed:

Oct 1, 2003

Appl. No.:

10/676057

Inventors:

Alexander I. Wallstein - Salt Lake City UT, US
Raymond Brandon - Grand Junction CO, US
Roland Walker - Syracuse UT, US
Steven Brady - Ogden UT, US

Assignee:

Dywidag-Systems International, U.S.A., Inc. - Bolingbrook IL

International Classification:

E21D020/00
F16B039/36

US Classification:

4052591, 411410, 411267

Abstract:

A mine roof bolt for use with a cable comprises a barrel having a first end and a second end, the second end having a rounded surface, a bore extending through the barrel between the first end and the second end and including a tapered portion, the bore sized to receive the cable, a pair of wedges sized for placement in the tapered portion of the bore and adapted to frictionally engage a cable disposed in the tapered portion of the bore, a recess defined in the first end of the barrel, and a driving nut sized for insertion in the recess and adapted for engagement by a driving tool.

US Patent:

7118310, Oct 10, 2006

Filed:

Dec 2, 2003

Appl. No.:

10/725895

Inventors:

Alexander I. Wallstein - Salt Lake City UT, US
Roland Walker - Syracuse UT, US

Assignee:

Dywidag-Systems International, U.S.A., Inc. - Bolingbrook IL

International Classification:

E21D 21/00

US Classification:

405288, 4053021, 4053022

Abstract:

A truss shoe for use on a mine roof truss having at least one inclined bolt and at least one horizontal cross member comprises a base including a first end, a second end, a first side and a second side extending between the first and second ends, a generally planar bearing surface, and a top side disposed opposite the bearing surface, the bearing surface arranged for contact with the mine roof. A stanchion is formed on the top side and includes a bore extending from a top end of the stanchion through the bearing surface, the bore sized to receive the inclined bolt. A bracket is formed on the top side and includes a laterally extending slotted bore sized to receive the horizontal bolt. A portion of the first end and a portion of the first side cooperate to form a curved edge.

US Patent:

7138145, Nov 21, 2006

Filed:

Sep 17, 2004

Appl. No.:

10/943389

Inventors:

Roland N. Walker - Idaho Falls ID, US
Carl B. Taylor - Ida Falls ID, US
Lynn F. Johnson - American Falls ID, US
Phil W. Simpson - Idaho Falls ID, US

Assignee:

O3 Zone Co., Inc. - Idaho Falls ID

International Classification:

A01N 59/00
A23B 9/18
A23L 3/3409

US Classification:

424613, 422 28, 422 31, 422 40, 426312, 426320, 426335, 426532

Abstract:

A method for treating grain comprising circulating concentrated ozone through an evenly distributed column of grain to maintain a concentration of between 50 and 100 ppm.

US Patent:

7588394, Sep 15, 2009

Filed:

Mar 28, 2008

Appl. No.:

12/058294

Inventors:

Roland Walker - Syracuse UT, US
Matthew S. Slatter - Salt Lake City UT, US

Assignee:

DSI Ground Support Inc. - Salt Lake City UT

International Classification:

E21D 21/00

US Classification:

4053022, 4053021, 4052591

Abstract:

A low-profile mine roof support device comprises a roof plate and a barrel. The barrel includes a nose portion, a shoulder portion, and a tapered bore for receiving a cable to secure the roof plate to the mine roof. The shoulder portion of the barrel comprises a convex surface that seats against the plate. So configured, a majority of the barrel, which includes the nose portion and the tapered bore, passes through the plate and into a drilled hole formed in the mine roof, thereby advantageously minimizing the extent to which the support device extends into the workspace of the mine without sacrificing the length of the barrel.

US Patent:

7712838, May 11, 2010

Filed:

Mar 31, 2008

Appl. No.:

12/080100

Inventors:

Roland C. Walker - Salt Lake City UT, US
Matthew S. Slatter - Salt Lake City UT, US

International Classification:

E21B 4/06
E21D 20/00

US Classification:

299 11, 175293, 175320, 4052596

Abstract:

An improved ground support member insertion device comprising means for attaching the device to a jackleg drill, a clutch assembly disposed adjacent to the attaching means and adapted for holding a ground support member while it is being inserted into a first drill hole; and, anchoring means disposed opposite the clutch assembly and adapted for temporarily anchoring the device for stabilization in a rock formation during insertion of the ground support member. An impact tool for engaging the proximate end of the ground support member providing rotation and impact to the ground support member to mix the resin and to secure the ground support member in a rock formation. The impact tool can also be used to manually or mechanically tension the ground support member once installed.

US Patent:

7717650, May 18, 2010

Filed:

Oct 10, 2006

Appl. No.:

11/548170

Inventors:

Tony Reschke - Langley, CA
Roland Walker - Syracuse UT, US
Raymond Brandon - Grand Junction CO, US

Assignee:

Dywidag-Systems International, U.S.A., Inc. - Bolingbrook IL

International Classification:

E21D 21/00

US Classification:

4053021, 405288, 4053022

Abstract:

A truss shoe for a mine roof truss comprises a base having a pair of ends, a curved side extending between the ends, a top side, and a bearing surface. The shoe includes an angled stanchion having a bore and a housing having a tapered bore, with a recess between the housing and stanchion. A retainer is sized to fit in the recess, with the retainer having an aperture disposed adjacent an end such that the blocks a portion of the opening of the bore in the housing to retain a wedge assembly in the tapered bore.

US Patent:

7780377, Aug 24, 2010

Filed:

Aug 6, 2008

Appl. No.:

12/221815

Inventors:

Steven E. Brady - Salt Lake City UT, US
Roland C. Walker - Salt Lake City UT, US
Matthew S. Slatter - Salt Lake City UT, US

International Classification:

E21D 21/00
E21D 20/00

US Classification:

4052591, 4052593

Abstract:

A roof stabilizer for use in securing surfaces in tunneling and mining is disclosed and claimed. The stabilizer has a tube with a slot and a ring attached to the bottom end of the tube. The ring can have indicia on a bottom surface of the ring or a side surface of the ring or both. The location of the indicia can provide better indication of the properties of the stabilizer to the installer. The indicia is easier to read than that of the background art both before and after installation. The location of the indicia can also provide easer and quicker visual inspection of already installed stabilizers to verify that the proper roof stabilizers were installed. The location of the indicia lessens the likelihood that corrosion will remove the indicia making it unidentifiable. The stabilizer disclosed and claimed also allows the use of grout or an adhesive in the interior of the tube which does not cover up or conceal the indicia on the ring as opposed to indicia in the background art stabilizers. Also disclosed are various locations and methods for placing indicia on the heads of roof bolts.

US Patent:

7802943, Sep 28, 2010

Filed:

Jan 10, 2008

Appl. No.:

11/972367

Inventors:

Roland Walker - Syracuse UT, US
Alexander I. Wallstein - Laguna Beach CA, US

International Classification:

E21D 20/00

US Classification:

4052591, 4053022

Abstract:

A low-profile mine roof support device comprises a roof plate and a barrel. The roof plate is generally flat and defines a through-bore. The barrel includes a head disposed at a first end, and a cylindrical body disposed at a second end. A tapered bore extends from the first end of the barrel toward the second end, and is for receiving a cable. At least one wedge is adapted to be received within the tapered bore of the barrel to anchor the cable thereto. The head of the barrel comprises a convex surface that seats against the plate such that a portion of the head penetrates the bore and intersects the first and second planes, thereby reducing the extent to which the support device extends into the mine without sacrificing the working length of the barrel.