Matches 1 - 50 out of 133 1 2 3 >
Match Document Document Title
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 )...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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,...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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....
Matches 1 - 50 out of 133 1 2 3 >