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Document Title |
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7527106 |
Method for operating the engine of fastening tool
A method for operating a driving tool that can be employed for driving fasteners, such as nails. The method can include: providing a housing that defines a housing cavity with a rod aperture;...
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7118507 |
Automatic reduction-ratio changing apparatus
An automatic reduction-ratio changing apparatus comprises a planetary gear mechanism including a sun gear, planet gears, and an internal gear. When a load, which exceeds a predetermined torque, is...
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6619407 |
Air-operated hammer
The subject invention pertains to an improved air-operated hammer which can utilize a pressurized air reservoir located near a pressurized air entrance of the hammer. This pressurized air reservoir...
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6224294 |
Tubular piling driving apparatus and piling installation method
A tubular piling driving apparatus and a method of securing a tubular piling into the bottom of a body of water using the apparatus. The apparatus is pressurized fluid-actuated, preferably...
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6209659 |
Hand-held drill with a compressed air-operated hammer mechanism
A hand drill including a housing (2), a rotary drive (8-15) arranged in the housing (2) for driving a chuck (6) provided at a front, in the drilling direction, end of the housing and in which a...
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6039231 |
Adjustable energy control valve for a fastener driving device
A pneumatic fastener driving device includes an energy control assembly constructed and arranged with respect to a passageway leading to a piston pressure chamber to be manually movable between (1)...
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5231750 |
Fastener driving device with offset feed
A fluid pressure operated nailer is provided including a portable housing having a fixed generally longitudinally extending chamber axis, a fluid pressure actuated mechanism mounted in the housing...
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5181450 |
Pneumatic fastener driving apparatus with piston holding detent
A pneumatic operated fastener driving device having an improved piston, which together with the cylinder form an elastic interference fit connection so that the piston is held from movement until a...
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5000365 |
Adjustable piston-driver connection and method of adjusting
A piston and a fastener driving element connection including interengaging threads on the piston and fastener driving element and a thermoplastic locking compound between the interengaging threads....
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4669553 |
Percussion tool
A percussion tool utilizing a reciprocatory piston movement for applying an impact force on to a working surface including a casing (1) having disposed axially therein a hammer member (12), an...
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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,...
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4530455 |
Piston and driver
An improved piston and driver structure includes a synthetic piston body, a bifurcated piston insert and a driver secured within the insert by means of a pin and by means of frictional engagement...
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4496007 |
Compressed-air pile-driver
A compressed-air pile-driver, especially for axially insertable tools, including a ram arranged in a housing. The interior of the housing is divided by the ram respectively into an upper...
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4384623 |
Pneumatic fastener gun
A pneumatic gun for forcibly inserting fixing elements, such as nails, metal staples and the like. The gun has an operating piston, carrying an arm for firing the fixing elements. The arm slides in...
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4371042 |
Fluid operated ram
A fluid operated ram comprises a striker body guided in an upright housing between an active stroke and a return stroke and striking at the end of its active stroke an impact transmitter resting on...
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4367800 |
Subsea pile driver
The hammer of an underwater pile driving apparatus is movable upwards and downwards in a housing which, in operation, is filled with a liquid which is present both above and below the hammer, the...
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4193459 |
Post-hole driver
A vehicle-supported post-hole driver comprises a frame adapted to be mounted on the pivot of the vehicle drawbar. It is supported in a fore-and-aft position by a fluid cylinder connected between...
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4126191 |
Gas discharge type underwater hammer with liquid purge and reflood control
An underwater hammer, of the gas discharge type, is provided with a surrounding casing arranged in the nature of a diving bell from which liquid can be purged so that the hammer ram may move up and...
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4122904 |
Pneumatic hammer driver
An improved driver is provided wherein a pneumatically operated piston is slidably disposed in a cylinder which is adapted to vent to atmosphere through a port positioned adjacent the end wall of...
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4100977 |
Drop hammers
A drop hammer has a hydraulic cylinder and piston assembly with a hammer weight attached to the piston and a sleeve valve at the lower end of the cylinder coaxial with the cylinder. An outer casing...
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4098355 |
Underwater hammer with circumferential flow seal
An underwater hammer, of the gas discharge type, is provided with a circumferential control valve on the hammer ram to allow free flow of water and gas upwardly along the ram in the annular...
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4056150 |
Ram device
A ram device has a drop hammer connected to the piston of a lifting cylinder which is connected by means of short and wide ducts to a control apparatus for admitting compressed air into the...
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4043405 |
Pile-driving arrangement
The pile-driving arrangement can drive piles both above and below water. It includes a housing containing a gas-filled motion chamber and an impact body movable upward and downward in the motion...
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3965992 |
Internally silenced impact driven tools and impacting means therefor
Impact driven tools of the type generally comprising a bitter end bounded by a collar and a shank and a tip are provided with internal silencing means comprising an opening in the bitter end, said...
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3958647 |
Powerful submersible deepwater pile driver powered by pressurized gas discharge
A very powerful pile driver is disclosed capable of operation in the air, partially submerged or totally submerged in the ocean for driving long piles into the ocean floor in deep water...
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3952813 |
Percussive device for driving holes in soil
A percussive device comprising a housing with a pointed front end and a hammer piston accommodated in the housing to form a front working chamber therewith. The hammer piston is provided, in the...
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3935908 |
Pile hammers
Power hammers for driving piling, and the like, free of any complex valve mechanism likely to require attention and comprising a working cylinder having an anvil at the lower end thereof and a ram...
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3895680 |
Fluid actuated hammer
A hollow central member is coupled to a tube to be driven into the ground. A driving mechanism includes a cylinder and piston surrounding the central member and a ram secured to the piston by a...
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3892279 |
Reciprocating hydraulic hammer
A pavement breaker having a reciprocating piston hammer to pound a work steel, wherein a jacket about the tool provides a reservoir of constantly pressurized oil, which pressurized oil drives the...
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3881554 |
Mechanically actuated hammer and bit assembly therefor
A percussion bit assembly for use with a mechanically actuated hammer, and of a mechanically actuated hammer including the above-mentioned percussion bit assembly and an exemplary actuator. The...
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3857448 |
HYDRAULICALLY OPERATED TAMPER
An impact tool driven by hydraulic fluid in which the motor piston is connected to the hammer by a light connecting rod. The hammer reciprocates in an air chamber which is isolated from the...
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3847230 |
SYSTEM FOR DRIVING OBJECTS USING PRESSURE OR TRACTION FORCES
An arrangement for driving objects, such as piles for example, into a receiving surface by pressure or traction forces is herein disclosed. The arrangement includes a piston-cylinder arrangement...
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3827507 |
HYDRAULICALLY POWERED DEMOLITION DEVICE
A hydraulic hammer for driving a demolition tool is disclosed. The hammer carries a piston which reciprocates in a cylinder. High pressure fluid drives the hammer to a retracted position to...
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3817335 |
AIRGUN REPEATER POWERED PILE DRIVER
An airgun repeater powered pile driver embodying the present invention is capable of driving piles of various types and sizes including immense piles to be driven down into the earth and can be...
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3788402 |
AUTOMATICALLY SELF-REGULATING VARIABLE-STROKE, VARIABLE-RATE AND QUIET-OPERATING PILE DRIVER APPARATUS
Automatically self-regulating variable-stroke, variable-rate and quiet-operating pile driver apparatus are disclosed in which a massive piston weight is bounced upon a cushion of pressure fluid,...
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3735823 |
IMPACT MOTIVE IMPLEMENT
An impact motive implement for a fluid impact tool or the like. The implement has a main body having an upper cylinder and a lower cylinder. An upper piston and a lower piston are fitted into the...
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3669198 |
FLUID OPERATED DROP HAMMER WITH VALVED PISTON
A drop hammer has an operating ram in which valve-controlled conduit means interconnect opposite ends of a cylinder of the ram to allow fluid to transfer between the ends of the cylinder.
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3499369 |
PNEUMATIC PUNCH PRESS
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3609969 |
HYDRAULIC IMPACT DEVICE
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RE07586 |
Title is not available
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3486568 |
HYDRAULIC IMPACT APPARATUS
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3469400 |
HIGH SPEED FORGING HAMMER APPARATUS
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3469504 |
IMPACT DISSIPATING DEVICE
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3455208 |
PERCUSSION HAMMER
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3415396 |
Suspended vibrator
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3402776 |
Device for impact loading a solid body
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3339644 |
Hydraulic hammer
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3338141 |
Power-actuated piston tool
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3314488 |
Hydraulically operated tool
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3263429 |
Recoilless, jet driven hammer
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