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7568529 |
Drill tool
A drill tool is provided with: a drive source accommodated in a tool body 2; a bit drive shaft 3 which is rotation-driven by the drive source and provided projectingly from a front end of the...
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7407343 |
Hydraulic-forced resonance-free vibratory sheet piling driving and extraction machine
An apparatus and method for continuously preloading during installation and removal of steel sheet piles, steel pilings, and casing piles, with a telescoping, articulated boom having a free end for...
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7392855 |
Vibratory pile driving systems and methods
A drive system for driving and/or extracting an elongate member. The drive system comprises a piston drive assembly, a hydraulic system, and a vibration drive assembly. The piston drive assembly...
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7314098 |
Apparatus for driving and extracting stakes
A hand-held tool having a motor, a vibration mechanism, and a stake-gripping device is disclosed for driving and extracting stakes or posts. The vibration mechanism generally comprises a housing...
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7306049 |
Mode change switch for power tool
A gear wheel is rotatably mounted on a drive shaft. The drive shaft has a plurality of longitudinal splines formed thereon. A drive sleeve surrounds the drive shaft and has a plurality of the inner...
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7296949 |
Removal of obsolete drill platforms from inland seas and ocean floors
The present invention is a method for removing an obsolete drill platform that includes a body having a plurality of caissons embedded in a ground of an ocean or inland sea. The method includes the...
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7204320 |
Active rotational balancing system for orbital sanders
A system for active dynamic balancing of a rotating tool driven by a motor having a shaft supported by a first and second bearing on opposing sides of the motor includes an acceleration sensing...
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7191847 |
Drive for a motor-driven hand-held tool
A drive for a motor-driven hand-held tool includes a motor ( 17 ) and a gear mechanism ( 20 ) for converting a rotational movement of the motor ( 17 ) into a reciprocating movement of the...
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7174970 |
Vibratory damped guide lever for a working device
The invention concerns a hand-operated working device such as, for example, vibrating plates and vibrating rollers for soil compaction with a guide lever that is arranged on the working device such...
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7168890 |
Eccentric vibration system with resonance control
The present invention may be embodied as an eccentric vibration system comprising a major eccentric member, a minor eccentric member, first and second motor assemblies, and a transmission system....
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7117758 |
Vibration generator for a soil compacting device
The invention relates to vibration generator for a soil compacting device referred to as a towed vibrating device. The vibration generator has two parallels arranged unbalanced shafts that each...
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7108077 |
Power tool
A power tool ( 10 ) with a housing ( 12 ) which accommodates a driven shaft ( 32 ) for holding a material-removing tool ( 40 ) and which sets the driven shaft into rotary oscillating motion capable...
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7104342 |
Active rotational balancing system for orbital sanders
A system for active dynamic balancing of a rotating tool driven by a motor having a shaft supported by a first and second bearing on opposing sides of the motor includes an acceleration sensing...
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7059423 |
Jackhammer system
A jackhammer system for reducing the vibration and noise experienced by an operator of the jackhammer. The jackhammer system includes a housing, a chisel movably positioned within a lower neck of...
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7017679 |
Device for the continuous adjustment of unbalance of steerable vibration plates
The invention relates to steerable vibration plates that are set vibrating by rotating unbalanced masses. By twisting the unbalanced masses relative to one another the resulting forces and their...
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6988562 |
Manual machine tool
The invention is based on a hand power tool, having a drive shaft ( 12, 14 ) supported in the housing ( 10 ) and having a mechanical percussion mechanism ( 16, 18, 20, 22, 24 ), which has a striker...
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6981558 |
Controller for an unbalanced mass adjusting unit of a soil compacting device
The invention relates to a controller for an unbalanced mass adjusting unit in a vibration exciter. Said controller comprises an adjusting piston for changing the relative position of unbalanced...
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6923269 |
Demolition hammer and/or hammer-drill with a percussion device suitable for releasing clamped objects by striking
The invention relates to a demolition hammer and/or hammer drill comprising a percussion generating device having a percussion piston moving axially back and forth. In a main percussion mode, the...
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6920047 |
Electrically isolated module
An electronic control module provides dual insulation layers between an internal line voltage and a separate tool housing that serves as a heat sink, thereby allowing versatility in mounting the...
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6907943 |
Electric hammer
It is, accordingly, an object of the present invention to provide an electric hammer with improved construction, while ensuring the vibration reduction performance. According to the present...
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6860338 |
Device for displacing a load
The invention concerns a device for displacing a load ( 14 ) comprising a mobile support ( 12 ) adapted to support a load and exert on the load a force in a given direction, and device for...
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6843329 |
Rotary percussion device for a drill column
The inventive rotary percussion device (1) used for driving at least one drill column (2) disposes of a percussion device (6) and a rotary device (5) and of an insertion end (3), which is rotatably...
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6739410 |
Sonic drill head
A sonic drilling head includes a spindle which is both rotated and vibrated at sonic frequency to effect ground penetration of members such as drill rods, etc. Two pairs of rotating eccentric...
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6739405 |
Hammer
A motor driven hammer comprising a tool holder and an air cushion hammering mechanism including a piston and a beat piece slideably located in a cylinder wherein reciprocation of the piston in the...
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6715563 |
Method and apparatus for vibratory kinetic energy generation and applications thereof
A device and method for performing a task employing vibration of a tool. The device includes a housing containing at least one off-center weight, and the off-center weight is coupled to a motor and...
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6691797 |
Device for driving piles
A device for use in combination with a pile driving apparatus for driving piles into the ground. The device ( 1 ) including a main body ( 13 ) which carries side grippers ( 18 ) and ( 19 ) each of...
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6655249 |
Hammer (tool machine), specifically intended for impact cutters for cutting sections of wire and/or rods
In order to avoid the recoil of the striker in a hammer device (tool machine) with a striker ( 18 ) that can be accelerated to strike velocity, and a tool carrier ( 14 ) receiving the impact of...
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6634437 |
Apparatus and method for rotary motion conversion and waste product collection unit
A device and method to convert ordinary rotary motion of input frequency Ω into a composite motion with the same primary frequency Ω plus an eccentric motion at a higher frequency ω enables a...
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6604583 |
Vibrating device and a method for driving an object by vibration
A device for driving an object by vibration, in particular a pile or sheet piling to be driven into the ground be removed therefrom, which device comprises a first eccentrically rotatable weight (...
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6386114 |
Single shaft tamper with reciprocating rotational output
A split tool tamper having a motor, a frame, a single tool shaft, and a tamping tool. The motor is coupled to the frame and the tool shaft is coupled to the motor. The tool shaft is further coupled...
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6386295 |
Vibratory driver for pipe piling
A coupler assembly ( 46, 48 ) is suspended from a forward section ( 12 ) of a boom ( 14 ) that projects from a mobile base ( 18 ). An upper end portion ( 160 ) of a pipe piling (P) is gripped by a...
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6302222 |
Device for the transmission and distribution of the vibration and stress exerted on objects by a vibrator to drive them into the ground
A device for transmitting and distributing vibration and stress exerted by a vibrator on objects to be driven into the ground includes a supporting plate of repartition of vibrations bolted on a...
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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...
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6234718 |
Vibratory apparatus
A vibratory apparatus, useful with a vibrated plow, cable layer or the like, includes a housing and a shaft mounted to the housing for rotation about a shaft axis. Counterrevolving first and second...
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6129159 |
Vibratory drill head apparatus
A vibratory drill head for use with a drill stand apparatus. The eccentric cams are mounted on parallel drive shafts which are powered by hydraulic motors. The hydraulic motors cause the drive...
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6105685 |
Adjusting device for an unbalance vibrator with adjustable centrifugal moment
An adjusting device for an unbalance vibrator with adjustable centrifugal moment. The invention concerns specifically the specialised category of vibrators in which each unbalance shaft has its own...
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6073704 |
Machine support including means for angular control of a supported device
Supporting clamps for a tool such as, for example, a pile driver machine are used to tilt a machine support relative to a horizontal plane. The clamps include a pair of jaw elements one of which is...
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6019179 |
Vibration tamper
A vibration tamper for soil compacting has a guide handle proceeding from the tamper head, which is pivoted elastically on the tamper. At the same time, the handle has a special mass distribution...
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5988297 |
Variable eccentric vibratory hammer
A vibratory hammer for use in driving a work piece such as a pile, pipe, caisson or plate into the earth includes a support frame 10 adapted to be suspended from a crane or the like, and a vibrator...
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5911280 |
Apparatus and method for reducing transverse vibrations in unbalanced-mass vibrators
An unbalanced-mass vibrator comprises a pair of unbalanced masses which are sequentially driven in opposite rotational directions. The vibrators are intended to provide vibrations in a vibrational...
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5823272 |
Vibrating hammer, more particularly for driving sheet piles into the ground
The invention relates to a vibrating hammer, more particularly for driving sheet piles into the ground, the hammer having a lower side with a number of parallel horizontal guide tracks, slide...
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5818135 |
Vibration generator for generating a directed vibration
A vibration generator for generating directed vibrations in a compacting device includes a housing and a first and second flyweight shafts rotatably supported in the housing and extending parallel...
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5794716 |
Vibratory systems for driving elongate members into the earth in inaccessible areas
A system for allowing elongate members such as piles, caissons, and casings to be driven into the earth at inaccessible locations. The system comprises a structural assembly having a support...
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5771985 |
Earth penetrating apparatus for obtaining sediment samples, driving instrument probes, pilings, or sheet pilings
A motor driven eccentric vibrator with a spring isolated biasing mass for applying force to an earth penetrating device to cause the device to penetrate into the earth. The vibrator is rigidly...
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5769173 |
Vibration exciter machine
A vibration exciter machine has magneto striction elements (5,6) supported by a driven pile (2), for providing a vibration of up and down direction to the driven pile (2), and a drive circuit (D1)...
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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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5653556 |
Clamping apparatus and methods for driving caissons into the earth
An apparatus for attaching a caisson to a device for inserting and/or extracting the caisson. The apparatus comprises three beams. A first beam is relatively long and is normally connected to a...
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5562169 |
Sonic Drilling method and apparatus
In combination with resonant sonic earth drilling components, and for particular use in retrieving a core sample in a core barrel seated against an internal shoulder in a sonically driven drill...
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5549168 |
Pile driving apparatus
A pile driving apparatus including two vibratory hammer units fixed to the top of a support plate having a U-shaped cutout, and a pair of hydraulic clamps fixed to the bottom of the support plate....
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5540295 |
Vibrator for drill stems
A vibrator yoke assembly (Y) for drill stems is moveably mounted on a drilling rig (R). A guide rail (10) is mounted to a support section (22) of the drill rig (R). Traveling along the guide rail...
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