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| Number | Title | Issue Date |
| 7363825 | Non-contact position sensor housing using existing torque sensor probe A sensors casing supports torque sensors and the position sensors and segment magneto-sensitive elements to detect the relative rotation between an input shaft and an output shaft and the angular position of the shaftsin a steering column housing. The sensor casing ... | 04/29/2008 |
| 7357196 | Method and system for predicting performance of a drilling system for a given formation A method and apparatus for predicting the performance of a drilling system for the drilling of a well bore in a given formation includes generating a geology characteristic of the formation per unit depth according to a prescribed geology model, obtaining specificat... | 04/15/2008 |
| 7282880 | Power tool and motor controller A method and apparatus to automatically reverse the motor of a power tool, such as a dispensing gun or similar tool. In some constructions, a controller automatically reverses the direction of plunger movement and removes the plunger from contact with the back wall ... | 10/16/2007 |
| 7261167 | Method and system for predicting performance of a drilling system for a given formation A method and apparatus for predicting the performance of a drilling system for the drilling of a well bore in a given formation is disclosed. The method generates a geology model of a given formation. The geology model includes a geology characteristic of the given ... | 08/28/2007 |
| 7108459 | Power assisted drill press A power assisted drill press having a feed cylinder fed by a variable pressure regulator which allows a user to controllably feed a bit and work material together while activating a drill motor to rotate the bit. An embodiment of the power assisted drill press utili... | 09/19/2006 |
| 7085696 | Iterative drilling simulation process for enhanced economic decision making An iterative drilling simulation method and system for enhanced economic decision making includes obtaining characteristics of a rock column in a formation to be drilled, specifying characteristics of at least one drilling rig system; and iteratively simulating the ... | 08/01/2006 |
| 7059427 | Automatic drilling system An automatic drilling system is disclosed which includes an electric servo motor operatively coupled to a winch brake control, a servo controller operatively coupled to the servo motor, and a drum position encoder rotationally coupled to a winch drum. The controller... | 06/13/2006 |
| 7032689 | Method and system for predicting performance of a drilling system of a given formation A method and apparatus for predicting the performance of a drilling system for the drilling of a well bore in a given formation includes generating a geology characteristic of the formation per unit depth according to a prescribed geology model, obtaining specificat... | 04/25/2006 |
| 7035778 | Method of assaying downhole occurrences and conditions A method of assaying work of an earth boring bit of a given size and design including establishing characteristics of the bit of given size and design. The method further includes simulating a drilling of a hole in a given formation as a function of the characterist... | 04/25/2006 |
| 6550544 | Rock drilling device A rock drilling device has a feed beam (1) and a rock drilling machine (2) movable along the feed beam. The rock drilling machine is fed along the feed beam (1) by a feed line (7), which is routed over a sheave (6) arranged at the movable end (5) of a pre... | 04/22/2003 |
| 6539603 | Method for self-programming a power nutrunner control system during initial tightening processes A method for self-programming a computerized power nutrunner control system for tightening a number of similar screw joints to a desired final torque level (MF) is provided. The method includes the steps of: (i) tightening initially at a low sp... | 04/01/2003 |
| 6520270 | Depth stop assembly for a hand-held power tool A depth assembly for use with a hand-held power tool (2) and including a motorized control unit for adjusting a position of a depth-setting member (3) and connectable with an energy source (4) which supplies power thereto, and a micro-controller (6) for c... | 02/18/2003 |
| 6029754 | Drill with motor drive and feed A drilling device comprises a drive motor (22), which sets a tool (36) in rotation, and a feed motor (14) which axially displaces the tool. Load sensors (12, 18, 20, 24) detect not only the tool feedrate (V) but also at least two of the three parameters, ... | 02/29/2000 |
| 6016878 | Method and device for drilling Methods and devices are provided for drilling with impregnated diamond drill bits in which the drill bit (30) automatically continues cutting. The speed of a drilling device (3) along a feed device (2) is determined, and the measured value is used for con... | 01/25/2000 |
| 5704436 | Method of regulating drilling conditions applied to a well bit A method of regulating drilling conditions applied to a given well bit comprises assaying the compressive strength of the formation in an interval to be drilled by said bit. Wear of critical bit structure of the same size and design as in said given bit a... | 01/06/1998 |
| 5701962 | Arrangement for controlling the feed mechanism of a rock drill An arrangement for controlling the feed motion of the feed beam of a rock drill, the arrangement including sensing elements for detecting the position of the front and for rear end of the rock drill and for controlling the feed and the return motion. In t... | 12/30/1997 |
| 5458207 | Method and an equipment for adjusting rock drilling A method for optimizing rock drilling, wherein the drilling is adjusted by means of one or more adjustable parameters such as the feed rate and the rotation rate. In the method, a set value (Hs) of each adjustable parameter is deviated in accor... | 10/17/1995 |
| 5449047 | Automatic control of drilling system A blasthole drill is provided with sensors for sensing the pressure (AP) applied to and through a drill bit to convey cuttings from the drill hole, the rate of rotation (N) of the drill bit, the torque (RT) required to rotate the bit, the force (FB) appli... | 09/12/1995 |
| 5226487 | Pneumopercussive machine A self-propelled, pneumopercussive, cyclic action, ground penetrating machine (200) has decreased energy consumption and increased average working velocity compared to conventional machines. This is obtained in part by a valve-operated air-distribution me... | 07/13/1993 |
| 5031706 | Pneumopercussive soil penetrating machine A self-propelled, pneumopercussive, cyclic action, ground penetrating machine (200) has decreased energy consumption and increased average working velocity compared to conventional machines. This is obtained in part by a valve-operated air-distribution me... | 07/16/1991 |
| 4821815 | Technique for providing an underground tunnel utilizing a powered boring device A technique for providing a continuous underground tunnel between first and second spaced-apart points and for installing new cable, pipe or conduit is disclosed herein. This technique utilizes a boring device including means for boring through soil and a... | 04/18/1989 |
| 4813312 | Power-wrench, a boiling spindle and an operational method A power-wrench bolting spindle (1) is used to insert and tighten screws or nuts. The bolting spindle is driven at one end by a motor through a reduction gear (5) and at its other end a bolting tool is seated. A torque sensor (7) is mounted between the mot... | 03/21/1989 |
| 4793421 | Programmed automatic drill control A programmed automatic drill control for optimizing the drilling of subterranean holes by large drilling machinery such as blast hole drills. Sensing means are provided to sense a first set of drilling parameter limits to effect maximum r.p.m. of the moto... | 12/27/1988 |
| 4741577 | Double ranging drum cutter having load controller According to the applicant's invention a load detector is used, in which a load sensor and a vibration sensor are combined using an AND gate. A load signal from the load detector is used for the feedback control of the cutter drum height and double rangin... | 05/03/1988 |
| 4407017 | Method and apparatus for controlling drilling process A method for controlling drilling process based on the use of an adaptive model of drilling process comprises two control modes of which one is a multicycle rock formation trial mode and the other mode is a drilling mode proper. During the first cycle of ... | 09/27/1983 |
| 4354233 | Rotary drill automatic control system A system for automatic control of a rotary drill comprises a unit for computing the value of drilling tool penetration per single revolution, said unit connected with its inputs to respective transducers and with its output--to an element for comparison o... | 10/12/1982 |
| 4350212 | Step feed drilling machine A drilling machine comprises a quill, pneumatic cylinder for reciprocating the quill in the forward and backward direction, a feed control device which includes a liquid cylinder parallelly disposed to the quill and provided with a piston assembly with a ... | 09/21/1982 |
| 4165789 | Drilling optimization searching and control apparatus An apparatus employed in the searching of the optimized rate of penetration of a drill into a given medium based upon the two drilling parameters of thrust and speed of revolution. Preset base values of both parameters are input into the drilling control ... | 08/28/1979 |
| 4074771 | Rock drill A rock drill assembly and more particularly a rock drill assembly having improved fluid power means therefor.... | 02/21/1978 |
