Arnold R Law
Engineers in Garland, TX
License number
Utah 260202-2202
Issued Date
Feb 7, 1994
Expiration Date
Dec 31, 2004
Category
Engineer/Land Surveyor
Type
Professional Engineer
Address
Address
Garland, TX
Professional information
Track-Mounted Drilling Machine With Active Suspension System
US Patent:
7461712, Dec 9, 2008
Filed:
Dec 10, 2007
Appl. No.:
11/953434
Inventors:
Arnold R. Law - Garland TX, US
Ajay Kumar - Garland TX, US
Ajay Kumar - Garland TX, US
Assignee:
Atlas Copco Drilling Solutions - Garland TX
International Classification:
B62D 55/084
US Classification:
180 41, 180 95
Abstract:
A drilling machine includes a frame, a tower that is supported by the frame, two tracks for movement over the ground, at least three yokes that interconnect the frame and the two tracks, at least three hydraulic cylinders, an inclinometer that senses the inclination of the frame and produces an output signal that is indicative of the inclination of the frame, and a controller that receives the output signal from the inclinometer. The tower includes a drill string. Each yoke is connected to the frame and one of the tracks. Each hydraulic cylinder is extendible and retractable in response to an associated control signal and connected to the frame and an associated yoke. The controller generates control signals for the hydraulic cylinders such that the hydraulic cylinders are controlled to extend or retract to maintain the frame in a level position.
Track-Mounted Drilling Machine With Active Suspension System
US Patent:
7438143, Oct 21, 2008
Filed:
Dec 10, 2007
Appl. No.:
11/953438
Inventors:
Arnold R. Law - Garland TX, US
Ajay Kumar - Garland TX, US
Ajay Kumar - Garland TX, US
Assignee:
Atlas Copco Drilling Solutions - Garland TX
International Classification:
B62D 55/00
US Classification:
180 952, 180 41, 280 6154, 175220
Abstract:
A drilling machine includes a frame, a tower that is supported by the frame, two tracks for movement over the ground, at least four yokes that interconnect the frame and the two tracks, a plurality of hydraulic cylinders, a plurality of sensors, and a controller. The tower includes a drill string. Each yoke is connected to the frame and one of the tracks. Each hydraulic cylinder is movable in response to a control signal and connected to the frame and a yoke. Each sensor senses a parameter indicative of force and generates an output signal that represents the force. The controller receives the output signals from the sensors, determines a center of gravity of the drilling machine, and generates the control signals for the hydraulic cylinders based on the center of gravity. Each hydraulic cylinder is controlled to move to maintain the center of gravity within a boundary area.
Absorber-Replenisher In A Hydrostatic Circuit
US Patent:
8596054, Dec 3, 2013
Filed:
Apr 21, 2010
Appl. No.:
12/764344
Inventors:
Arnold Law - Garland TX, US
Neil Skoog - Ostrander OH, US
Neil Skoog - Ostrander OH, US
Assignee:
Atlas Copco Drilling Solutions, Inc. - Garland TX
International Classification:
F16D 31/02
US Classification:
60414, 60419
Abstract:
Methods and systems for operating an absorber-replenisher to supply fluid to a low pressure circuit in a hydrostatic circuit or recover surplus energy usually wasted across a pressure relief valve in the low pressure side by intensifying it for use in a high pressure circuit in the hydrostatic circuit. The absorber-replenisher 1) allows fluid flow through a high pressure motor-pump section of the absorber-replenisher from a high pressure circuit source causing a low pressure motor-pump section to turn providing additional fluid flow to the hydrostatic circuit, or 2) allows increased fluid flow from the low pressure portion of the hydrostatic circuit to increase pressure until the higher pressure induces a higher net torque of the low pressure motor-pump section to reverse the direction of the absorber-replenisher and pump fluid flow into a high pressure circuit through the high pressure motor-pump section.
Regenerative Drive Mechanism For Hydraulic Feed Cylinders In Hydrostatic Or Hydraulic Circuits
US Patent:
8453762, Jun 4, 2013
Filed:
Apr 7, 2010
Appl. No.:
12/755928
Inventors:
Arnold Law - Garland TX, US
Neil Skoog - Ostrander OH, US
Neil Skoog - Ostrander OH, US
Assignee:
Atlas Copco Drilling Solutions, Inc. - Garland TX
International Classification:
E21B 7/00
US Classification:
175 57, 175107, 175217, 175162, 137 14
Abstract:
Methods and systems for storing kinetic energy in a fluid-base power circuit. A regenerative control valve manifold diverts fluid flow from a hydraulic device performing a first operation into an accumulator. The accumulator stores a fluid volume sufficient to perform a second operation. The regenerative control valve manifold connects the accumulator to the power circuit providing a fluid flow and charge pressure sufficient to perform the second operation.
Track-Mounted Drilling Machine With Active Suspension System
US Patent:
2006028, Dec 28, 2006
Filed:
Jun 23, 2005
Appl. No.:
11/165145
Inventors:
Arnold Law - Garland TX, US
Ajay Kumar - Garland TX, US
Ajay Kumar - Garland TX, US
Assignee:
Atlas Copco Drilling Solutions - Garland TX
International Classification:
E21B 3/02
US Classification:
175040000, 175057000, 175122000, 175162000
Abstract:
A drilling machine includes a frame, two tracks, and a plurality of yokes interconnecting the frame and the tracks. Each yoke is pivotable with respect to the frame by the extension and retraction of a hydraulic cylinder. Each of a plurality of sensors senses a parameter indicative of force and generates a signal representing the force. A controller receives the force signals, and generates control signals to extend or retract the hydraulic cylinders when an associated force deviation for a hydraulic cylinder exceeds a predetermined magnitude.
Sub Drilling Sub
US Patent:
7413036, Aug 19, 2008
Filed:
Mar 4, 2004
Appl. No.:
10/591549
Inventors:
Arnold R. Law - Garland TX, US
Ajay Kumar - Garland TX, US
Ajay Kumar - Garland TX, US
Assignee:
Atlas Copco Drilling Solutions Inc. - Garland TX
International Classification:
E21B 17/07
US Classification:
175321, 1662427
Abstract:
A telescoping sub () for mining operations and the like. The telescoping sub () includes a rotor () portion coupleadle to the rotary head of a drilling rig, and a stator () portion that is coupleable to a drill rod. The rotor () portion is slideadly coupled to the stator () portion and is moveable with respect thereto between an extended position and a retracted position. With the telescoping sub () in the retracted position, the drilling rig is operated to drill to a first depth. The drilling rig is then operated to move the rotor () portion to the extended position, and the drilling rig is operated to drill to a second depth that is greater than the first depth.