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7617884 |
Drill slide for rock drilling apparatus
A drill slide ( 1 ) for a drilling apparatus, the slide ( 1 ) adapted to slidably support a drifter ( 6 ), the slide ( 1 ) comprising a telescopic shaft ( 2 ) having a first elongate member ( 3 )...
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7503467 |
Rotary and/or linear actuator system for controlling operation of an associated tool
A rotary-linear system is configured to operate an associated tool. The system includes a rotary-linear actuator having first and second portions that can move linearly and/or rotationally relative...
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7497274 |
Hydraulic fluid tank for drilling machine
A hydraulic fluid tank for a drilling machine includes a primary chamber and a secondary chamber. The primary chamber is located entirely below the hydraulic pump of the drilling machine, and the...
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7481764 |
Self-advancing device
A device ( 1 ) which includes an elongate body ( 2 ) with a movable mass ( 3 ) arranged for sliding movement within the body ( 2 ), the element ( 4 ) being arranged to decelerate toward an end of...
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7419012 |
Wellbore top drive systems
A drive system for wellbore operations, the drive system, in certain, but not necessarily all aspects, including a main body, a motor apparatus, a main shaft extending from the main body and...
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7387173 |
Pile driver
A pile driver including an apparatus for allowing relative movement between a hammer and a boom of an excavator. The apparatus includes a mounting plate mounted to the boom that interfits with and...
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7380611 |
Rock drilling machine and rock drilling system
A rock drilling machine ( 1 ) having, on a machine housing ( 2 ), a first attachment element on a first attachment side ( 13 ) for its fastening to a slide member which is movable back and forth...
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7331405 |
Powered hammer device
The present invention relates to a powered hammer device including: a hammer with at least a first and a second projection; at least one translation dog adapted to engage with said projections, and...
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7318491 |
Apparatus and method for modified horizontal directional drilling assembly
An apparatus and method for a modified horizontal directional drilling assembly for drilling pipe into a drilling surface. The drilling assembly comprises a power unit for supplying power to the...
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6959770 |
Portable drilling apparatus
A drilling apparatus for drilling underground, small diameter bore holes wherein a support frame of the apparatus is formed in part by a pair of hydraulic cylinders arranged parallel one to...
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6938702 |
Method and equipment for controlling operation of rock drilling apparatus
A method and an equipment for controlling the operation of a rock drilling apparatus, which rock drilling apparatus comprises a percussion device for producing impact energy to a tool of the rock...
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6814155 |
Bolting rigs
The invention provides a bolting installation apparatus comprising a base having a pair of parallel cylindrical rods held between two end plates; an intermediate carriage slidably mounted on said...
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6796388 |
Drill depth control device
This invention provides a roof bolt installation apparatus including a drill stabilizing mechanism including a base having a cylindrical bore therein, and a stabilizing rod extendable from the base...
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6741051 |
Power tool trigger control
A trigger controller for an electric power tool including a motor and a pull-trigger movable along a path having a foremost home position comprises a mechanical switch and a solid-state switch...
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6736219 |
Underground horizontal boring apparatus
An underground horizontal boring apparatus includes a framework having a pair of guide tracks and a carriage connected to the framework for movement along the tracks. The apparatus includes a...
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6722447 |
Concentric pneumatic/hydraulic power feed apparatus
A power feed apparatus for applying a thrust force to an output shaft of a motor driven tool to drive the output shaft linearly towards and away from a workpiece without applying off-axis forces to...
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6705407 |
Rock drilling and mounting frame
A rock drill includes a mounting frame to which a hammering apparatus and a rotating apparatus is arranged. The mounting frame is made maneuverable with respect to a feeding beam by means of slide...
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6651754 |
Apparatus for moving earth boring machines
Apparatus for moving an earth boring machine along a track includes a module which is releasably connected as a unit to the earth boring machine. The module includes a support plate releasably...
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6311278 |
Method and system for extracting application protocol characteristics
A method and computer program for automatically and continually extracting application protocols (i.e., defining a set of allowable or authorized actions) for any application. The method involves...
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6283229 |
Impact device for directional boring
An impact boring tool according to the invention suitable for using with a directional boring machine has a tubular housing and a head mounted at a front end of the housing. The head preferably...
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6216798 |
Work unit for machine tool, with linear electric motor for axial movement of the spindle
The invention concerns the work units for automatic machine tools in which a spindle (5) moves in translation and rotates with respect to a work axis (Z). More particularly in these units, in order...
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6202758 |
Compact boring apparatus for making earth bores
An earth boring machine 10 with a frame and a linearly movable slide 22 on the frame has an apparatus for holding and rotationally driving a boring rod 24, and a forward feed drive for moving the...
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6068066 |
Hydraulic drilling rig
A multi-purpose drilling rig has a movable pipe support cradle which moves horizontally to transfer drill pipe from a storage area to the well being drilled, and vice versa. The cradle travels...
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6050345 |
Ergonomic tool with lift assist mechanism
An ergonomic demolition tool includes a jackhammer and a lift assist mechanism having a wheeled caster assembly. The lift assist mechanism has a frame which is movable between upper and lower...
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5992536 |
Hydraulic drive tool controlling apparatus
When a start SW 3 is pressed, a one-shot multivibrator circuit 15 turns on and releases a pulse. The pulse is transmitted to a self-hold circuit 16 which in turn stays in self-hold mode and...
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5941320 |
Directional boring machine
An underground directional boring machine includes a frame and a drive mechanism slidably mounted on the frame. A drill string is coupled to the drive mechanism for rotation and longitudinal...
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5836402 |
Auger-holder
An auger-holder designed for transporting, stabilizing, and operating an auger from a vehicle, preferably an all-terrain vehicle (ATV). The auger-holder includes a primary frame, a secondary frame,...
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5697457 |
No load derrick for drilling rig
A mobile drilling rig has a rectangular tubular derrick or mast normally transported on the truck in a generally horizontal attitude. The mast is pivoted to vertical at the drilling site. A drill...
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5664606 |
Drill pipe having concave wrenching recesses
A drill pipe has a central axis and comprises a first end and a second end with a portion of the second end being substantially triangular in the lateral cross-section and having three faces. At...
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5658091 |
Apparatus for inserting prefabricated vertical drains into the earth
Apparatus for inserting prefabricated drain members downwardly into underlying earth which includes a vertically extending mast that supports an elongated earth penetrating mandrel. The mandrel is...
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5529132 |
Hydraulic control circuit for pile driver
A pile driver arrangement including a reciprocal impact member connected to a piston rod which is also connected to a reciprocal piston located in a hydraulic cylinder having a lower rod end and an...
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5431234 |
Ground-drilling device
The ground-drilling device comprises an elongated mount (10) comprising a track (11) for guiding a main carriage (25). The drive means for the main carriage (25) consists of a piston-cylinder unit...
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5370194 |
Drive head assembly for drilling machine
The drive head assembly for a drilling machine includes a drive head body having a cavity with an upper portion and a lower portion. A bolt is located in the upper portion of the drive head body...
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5348104 |
Rotary drive assemblies
A well assembly including a drive string, a frame, a spindle mounted on the frame and means for rotating the spindle, is constructed to allow the upper end of the string to pass through the...
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5307882 |
Apparatus for feeding a drilling machine in extension rod drilling
A feeding apparatus for a rock drilling machine (8). The feeding apparatus comprises a feeding cylinder (5) movable with respect to the feeding apparatus and a connecting cylinder (6) arranged...
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5213449 |
Apparatus for inserting wick drains into the earth
Apparatus for inserting flexible drainage wick members downwardly into the earth which comprises a mast having a hollow longitudinally extending chamber therein, and an insertion tube disposed in...
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4854395 |
Hydraulic kelly bar chuck
In a rotary drill having a driven rotary table with an axially directed passage through its center of rotation defined by a hollow spindle, a kelly bar extending through the passage, and a chuck...
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4812088 |
Doweling tool
A doweling tool for drilling a dowel hole in concrete to facilitate the insertion of dowels, the doweling tool having a guide bar, a support frame for supporting the guide bar, a carriage movingly...
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4757866 |
Hydraulic drill feed units
An hydraulic drill feed unit is provided having a main support frame extending from its mounting on a base plate. Single stage cylinders are located on either side of the main support frame and...
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4703812 |
Mobile drilling apparatus
A mobile drilling apparatus having a support structure, a mast positioned on the support structure, a drill head and a hydraulic assembly vertically operable on and guided by the mast. The...
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4637477 |
Device in rock drilling machines
A device in rock drilling machines with a gripping device (24) which is rotatably mounted in a non-rotating drilling head (14) and intended to grip a drill string (21) for transferring rotational...
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4558748 |
Method and equipment for boring and casing air vent holes and/or delivery holes in medium-steep and steep dip coal deposits and rocks of loose structure
Forming a hole between lower and upper parallel galleries formed in a mine by boring upwardly from the lower gallery a bore hole having a first length equal to a fraction of the distance between...
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4553612 |
Earth boring machine
An earth boring machine for boring straight and level elongated holes through rock-laden earth. The machine includes a stationary elongated frame upon which a first slide is carried. A second slide...
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4503917 |
Carriage feed system
An improved drill feeding mechanism for a rock and earth drilling machine is disclosed wherein substantially all the loading forces due to the drilling and extracting operations are directed away...
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4478291 |
Drilling rig
This invention relates to a mobile drilling rig used for deep wells. The mast structure can be made considerably lighter than previously by translation of the drilling string lifting pressure...
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4393945 |
Rotary drill with a kelly bar and hydraulic chuck
In a rotary drill having a driven rotary table with an axially directed passage through its center of rotation defined by a hollow spindle, a kelly bar, with annular shoulders, extending through...
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4336840 |
Double cylinder system
Disclosed is a system including two or more fluid pressure piston-and-cylinder assemblies. The cylinders are linked in pairs so that retraction of both piston rods reduces the length of the pair of...
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4315552 |
Raise drill apparatus
A drilling apparatus includes a ground engaging base, a torque transmitting apparatus for engaging and transmitting torque to drill pipe, and hydraulic cylinders connected to the base for moving...
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4301874 |
Pile or sheet-pile driver
Pile or sheet-pile driver comprising a vertically movable member to be vertically driven by a hydraulic cylinder supporting a vertically movable chucking device having a pair of chucking fingers to...
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4248312 |
Method and apparatus for upwardly cutting full cutting face of a shaft without requesting workmen's hands
There is provided a method and apparatus for upwardly excavating a shaft through destructible underground rock. The cutting operation is carried out by full face boring without relying on blasting....
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