Matches 1 - 50 out of 158 1 2 3 4 >


Match Document Document Title
8684104 Detachable pipe ramming head with efficient lubrication dispersal  
A detachable head for ramming a pipe casing including an external ring having a first diameter, wherein the first diameter is operatively sized to enable the external ring to engage with an outer...
8353360 Pile driver  
A pile driver provided with a housing and at least one body connected with the housing so as to be moved back and forth over a predetermined path, the pile driver being further provided with a...
8272453 Handheld power tool  
The invention relates to a handheld machine tool, in particular a hammer drill and/or chipping hammer. The tool has an impacting unit which has at least one impacting pin and a guide unit which is...
7503401 Solenoid positioning methodology  
A method for calibrating a power tool having a roller, a driver and a solenoid. The solenoid has a body and a rod and is coupled to the roller so as to be capable of selectively advancing the...
7438138 Impact adapter for transfer of impacts and rotation from an impact rock drilling machine to a drill string  
Impact adapter for transfer of impacts and rotation from an impact rock drilling machine to a drill string comprising a first end (5) for connection to a drill string and a second end provided...
7156189 Self mountable and extractable ultrasonic/sonic anchor  
Self drilling anchors and related methods and apparatus. In one embodiment an apparatus comprises a drill bit, a hammer mechanism for hammering the drill bit in a first direction and in a second...
7028786 Hand machine tool  
A hand power tool has a housing (10), a hammer barrel (12), a tool receptacle (14) that is separated from the hammer barrel (12) at least one locking body (16) for fixing the tool receptacle (14)...
6854530 Method for driving electric percussion tool  
A method for driving an electric percussion tool which includes a solenoid, a plunger core partially engaged in one end of the solenoid, and a spring disposed out of the solenoid and closer to the...
6702037 Post pounder having lateral impact resistant floating anvil  
A pile and/or post pounder utilizing a tracked floating anvil and having a continuous loop for lifting a tracked hammer. The pounder is adapted to be transported on, and powered by the hydraulic...
6564882 Electromagnetic hammer having a moving ferromagnetic mass  
The invention relates to an electromagnetic hammer having a moving ferromagnetic mass, the hammer being of the type comprising a tube of non-magnetic material for standing on an element that is to...
6523622 Pneumatic percussion power tool with pneumatic returning spring  
A pneumatic percussion power tool has a percussion tool housing in which a drive piston and a percussion piston are movable in an axial direction. The motion of the drive piston, which is...
6364577 Pile driving transition piece  
A pile driving transition piece. The transition piece avoids the shock loading in the stabbing points of pile driving transition pieces that otherwise would be induced when the pile driving hammer...
6298923 Impacting device for releasing blocked objects by impact  
An impacting device is capable of being used in an impact hammer and/or a drill for releasing by impact tools blocked in rocks. An impact impetus supplied by an impact piston is modified via an...
6135214 Impact absorbing fluid operated hammer  
An impact hammer having a non-mechanical connection between the driving piston rod and the impact ram. The non-mechanical connection includes an annular body portion connected to the lower end of...
5975221 Machine for horizontal percussion boring  
In a machine for horizontal or inclined percussion boring in the ground having a percussion boring string which has an oblique-face boring head at one end and an impact mechanism at the other end,...
5207280 Device in hammer machines  
Device in hammer machines. The device comprises a machine housing (1) and a hammer piston (2) movable to-and-fro in the machine housing. A drilling tool connected to the machine housing comprises...
5117924 Energy transfer unit for a pile driver  
An energy transfer unit is designed for use in conjunction with a pile driving that has an impact block projecting from the lower end of the hammer casing and axially movable therein for...
5025868 Pneumatic ground piercing tool  
The present invention provides a self-propelled impact boring tool which, according to one aspect of the invention, has a simplified tail assembly so that the tool can be readily assembled and...
4993504 Device for efficient energy transfer and damping of impact drilling machines  
Device in impact machines. The device comprises a first chamber (5) which is connected to an accumlator (6) and the pressure of which is used to hold together a set of rods (2) forming part of the...
4932985 Rapper construction  
A rapper for use in vibrating parts of an electrostatic precipitator by utilizing an impact force. An anvil is connected to a part of an electrostatic precipitator, such as, a section of...
4903785 Drilling and chiseling tool bit  
A drilling and chiseling tool bit includes a tool bit head, an axially extending shank and an insertion end for insertion into a drilling or chiseling device. The shank extends between the tool...
4648609 Driver tool  
A torsion or hairpin spring external attachment for power hammers has eye ends respectively bottomed on the power hammer casing and on the tool driven by the hammer for maintaining the tool...
4646852 Pneumatic mallet  
A hand tool in the form of a pneumatically actuated mallet. The tool comprises a conventional pneumatic motor of the type employed in pneumatic fastener driving tools, including a tool body having...
4602689 Power tool  
A power tool, particularly a hand-held power tool, has a striking mechanism with a striker transmitting impact energy to a tool, a drive operative for actuating the striker through an air cushion,...
4593768 Hydraulically operated impact device  
In a hydraulic rock drill there is a hydraulic so called recoil damper that damps the reflected shock waves that propagates from the rock backwardly through the drill stem. The damper comprises a...
4589501 Offset driver accessory  
The invention comprises an accessory for use with a driver for forceably inserting friction rock stabilizers into bores formed in earth structures (such as mine roofs). In the depicted...
4571112 Joint assembly  
Oppositely facing surfaces have grooves in one of the surfaces and low coefficient of friction inserts in the grooves. The inserts have a thickness greater than the depth of the grooves so as to...
4557630 Vibratory clamping device for use with an excavator in supporting and placing sheeting when excavating in sand, running sand and silt  
A first portion of the device is suspended by a head from the mounting for an excavator bucket and comprises a first jaw and a guideway. A second portion of the device comprises a second jaw and a...
4506744 Pile hammer  
A hammer for driving piles comprises an anvil adapted to rest on top of a pile to be driven and a weight arranged to travel through a stroke between an upper position and a lower position. At...
4476941 Motor-driven hand-held percussion tool  
A hand-held motor-driven percussion tool comprises a piston driven over an air cushion and acting over an axially movable anvil on the inner end of a tool axially movable in a tool receiver...
4465145 Cushioned drive cap for a pile driver  
A force-transmitting a drive caps is interposable between a pile driver hammer and a pile to be driven. This cap is formed with an upwardly open cylinder which is of smaller area than the striking...
4462468 Ram head for self-driven pneumatic ram drills  
A ram head for self-driven pneumatic ram drills for producing boreholes in the earth, having a generally tubular housing within which there is movable axially back and forth an impact piston whose...
4460050 Pipe driving attachment  
An attachment for driving pipe wherein a plurality of concentric sleeves having diminishing diameters are arranged in driving engagement with a pipe end with a driving hammer operating to impart a...
4421180 Pile driver  
A pile driving device of the drop hammer variety is disclosed and includes a crane supportable housing containing a hydraulic drive motor and a cam member for executing generally circular motion...
4413686 Wedge arrangement for locking together hammerhead and anvil  
When inserting a locking wedge (14) having planar wedge surfaces (16, 17) between an anvil (4; 5) and a hammerhead (1) or an anvil block lining (6) the wedge (14), which is provided with a draw...
4387775 Rock drilling apparatus  
Rock drilling apparatus including a pressure fluid driven rock drilling machine (10) and a drill unit (11). The drill unit (11) includes a drill rod (18), a drill bit (16) and a tube (20)...
4383582 Bouncer type pile driver  
A massive piston that does not strike anything during operation reciprocates with bouncing action up and down within a cylinder. An annular pressurized gas storage chamber encircles the piston and...
4366870 Pile hammer cushion block  
A block of cushioning material arranged to be disposed in a cavity within a drive cap of a pile hammer, the drive cap being positioned on the upper end of a pile for impact engagement by the ram...
4362216 Pile driving apparatus  
A method of and apparatus for driving piles by the impact force delivered by a hammer disposed in a housing from the bottom end of which there extends downwardly a pile sleeve in which a pile...
4345656 Striking cap lining  
There is disclosed a pile-driver comprising a cylinder and a piston, the piston being in registry with a cap disposed over an article to be driven. The cap has a lining in striking relationship...
4340210 Pile driver cushion  
In a pile driver the sharp force loading on a pile at the moment of impact by a ram is absorbed by a pile driver cushion. The cushion includes a pad formed from a flexible strip of compressed...
4340120 Annular casing hammer  
A casing hammer for simultaneously driving casing and drilling a water well comprises a housing having an annular pneumatic chamber with an annular piston that drives an annular anvil which seals...
4325437 Anvil with trapped fluid  
A hydraulic impactor having a reciprocating piston, a liquid coupling having a stepped bore and an actuatable driven member of a configuration to obtain the optimum energy transfer to the driven...
4315550 Self-propelled apparatus for setting cemetery markers and the like  
A wheeled, self-propelled apparatus has a percussion tool or hammer mounted on its forward end and an impact transmitting means carried on the tractor below the hammer. The impact transmitting...
4314613 Pile-driving recoil damping device  
A pile driver has a hollow and elongated cylindrical housing. Within the housing, a ram can slide upwardly and downwardly in order to provide the force which can drive a pile into dense strata of...
4291780 Apparatus for wires in the ground  
A mobile generator for producing seismic waves in the ground, which includes a mobile four-sided frame, a boom having its lower end pivotally connected to the frame, and a worm gear mounted on the...
4262755 Shock absorbing pile driver  
A pile driver has a hollow and elongated cylindrical housing. Within the housing, a ram can slide upwardly and downwardly in order to provide the force which can drive a pile into dense strata of...
4251113 Hammer for breaking strong abrasive materials  
A hammer for breaking down strong abrasive materials comprising a body with a movable ram reciprocated by a drive and provided with a socket accommodating a tool intended to break down the...
4209070 Air-operated self-propelling rotary-percussive downhole drill  
The drill has a housing receiving therein a reciprocating striker, effecting percussive action upon the tool for breaking the rock at the face of the hole, mounted at the forward part of the...
4187917 Pile driver  
The driving power and driving rate of a pile driver hammer is increased without increasing the overall weight of the hammer through the use of a hydraulic spring transformer which is disposed...

Matches 1 - 50 out of 158 1 2 3 4 >