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8006776 |
Sliding pressure control valve for pneumatic hammer drill
A pneumatic device control apparatus and method comprising a ported valve slidably fitted over a feed tube of the pneumatic device, and using a compliant biasing device to constrain motion of the...
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7992652 |
Fluid distributor cylinder for percussive drills
A fluid distributor cylinder is for a percussive drill assembly that includes a casing having an inner circumferential surface defining a central bore, a central axis extending through the bore, a...
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7564210 |
Driver for an inflatable rotating exhibit
A driver for an inflatable rotating exhibit is mounted inside an inflatable rotating exhibit having a transparent inflatable body and a rotating body and has a rotating assembly and a...
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7469751 |
Pneumatic hammer
A pneumatic hammer comprises an elongate hollow casing with operatively upper and lower ends and has a piston slidingly received within the casing and operable to reciprocate within the casing...
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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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6341482 |
Cutting blade for reaper
A cutting blade is provided for a reaper which can easily position members to be welded, can reduce a welding distortion, can fully ensure the strength of a shank member and can easily be...
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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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5944117 |
Fluid actuated impact tool
An improved fluid actuated percussive impact tool of the valveless type adapted for down hole drilling is provided. The impact tool includes a casing, a back head, a distributor located at a first...
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5918685 |
Hand tool
A hand tool (1) having a drive motor (12), a depth stop (16) by which the drive motor (12) can be automatically switched off when it is in contact with a workpiece (4), and a switching mechanism...
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5853052 |
Hydraulic drive for rotation of a rock drill
The invention provides an In-The-Hole hydraulic drive unit for rotating a rock drill. A hydraulic motor having a fixed rear trailing end and a rotating front drilling end converts hydraulic power...
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5797463 |
Pneumatic hammer
A pneumatic hammer comprises a rigid unit of construction, which comprises a housing, a handle, an operating cylinder resiliently supported in the housing, and a tool holder for receiving a tool...
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5701961 |
Electronic push to start nutrunner
A latching magnetic switch is utilized to activate a push to start nutrunner or the like wherein the magnetic latching switch is deactivated first by one magnetic pole and thereafter upon...
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5573073 |
Compressed fluid operated tool with fluid metering device
A vibration dampened percussive tool has a handle assembly and a cover surrounding a barrel and piston assembly which are caused to oscillate relatively to the handle assembly. The barrel assembly...
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5417294 |
Pneumatic hammer
A hammer of the type having an impact tool driven by pressurized fluid has a hammer body portion with a closed rearward end and an open forward end and a piston longitudinally movably housed within...
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5360073 |
Battery type screw driver
A battery type screw driver has an auxiliary switch 39 in addition to a main switch 37. A clutch 30 is provided between a driving shaft 16 and a driven shaft 11. A central bore 32 is formed along...
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5320187 |
Mechanical lockout for a pneumatic tool
The invention is a safety mechanism for an air-powered tool. The mechanism senses the position of the tool's implement retainer and disables the air flow to the tool's motor if the retainer is not...
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5094133 |
Screwdriver with switch-off means for screw-in depth and screw-in torque
To improve a power-operated screwing tool machine comprising a drive arranged in a housing, a screwing tool and a switch-off means for the screw-in depth including a depth stop held on the housing...
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4688645 |
Pressure medium operated impact tool
A hand-held impact tool operated by a pressure medium includes a work cylinder, a piston movable in the work cylinder by the pressure medium, and an impact member. A pressure medium container,...
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4583601 |
Hammer drill
A "hole bottom" hammer drill comprising a tubular body (1) supplied with compressed air, a drill bit (3) and a percussion piston (38) caused to move in an inner cylinder (7) by a mechanism...
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4552227 |
Reciprocating linear fluid motor
Hydraulic fluid pressure moves a piston (22) against a body of incompressible fluid (14), compressing a spring (42). The pressure is released, and the force of the stored energy in the spring (42)...
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4523646 |
Fastener driving tool
A fastener driving tool includes a housing defining a handle portion and a head portion with a nose portion extending therebelow. Mounted within the head portion is a cylindrical sleeve within...
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4497377 |
Pneumatic tool
A pneumatic tool is disclosed for use in puncturing or hammering applications, particularly cattle stunning and the like.The tool generally comprises a cylinder, a piston slidably mounted in the...
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4453773 |
Pavement breaking apparatus
Apparatus for breaking concrete and asphalt pavement and the like comprising a frame adapted to be supported by and above pavement to be broken. Power operated means move the frame in one and...
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4359108 |
Pneumatic hammer having a safety device
A pneumatic hammer having a vibration attenuating hollow cylindrical member axially movable in a housing body, a striking piston axially movable within the cylindrical member, a stationary sealing...
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4300282 |
Free standing insertion tool
An electrically operated tool is disclosed for inserting one or more insulated electrical wires into a barrel shaped, slotted terminal. A modified solenoid provides a hammer action power stroke...
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4298072 |
Control arrangement for electro-mechanical tool
A control arrangement for an electro-mechanical tool is disclosed. The tool may, for example, be a nailer or stapler, and is provided with an impact member which is frictionally moved in a working...
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4196833 |
Pneumatic tacking tool
An improved type of pneumatic tacking tool is disclosed for use in fastening carpet tacking strips and the like to wooden or concrete floors. The tool comprises a modification of the fastener...
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4192389 |
Single impact rivet gun
A single impact rivet gun has a piston freely movable within a cylinder that is surrounded by an air accumulator. A valve to control flow of the air from the accumulator to the inside of the...
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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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4064771 |
Automatic torque controller for an impact wrench
An attachment for a pneumatic impact wrench is mounted between the wrench and socket tool which fastens a nut or bolt in an assembly. The attachment controls automatically the torque applied to the...
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4034816 |
Demolition tool
The present invention is a projectile type demolition tool. A projectile with an enlarged upper cross-sectional area is slideably mounted within and extendable from an inner cylinder. The lower...
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4006786 |
Power actuated portable marking tool
A longitudinal housing includes a bore for slidably receiving a barrel assembly having a bore coaxially aligned with the housing bore. A cartridge receiving chamber is positioned within the barrel...
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3986565 |
Exhaust means for percussion tool motors
Following is disclosed an improved split-type stop ring having two separable body portions forming an annular composite body with passage means useful with a fluid operated, percussion type drill...
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3970152 |
Mud actuated drilling tool
A fluid operated impact drilling device wherein a hammer is mounted in a casing for axial reciprocating movement and drilling fluid flows through the hammer. The flow of drilling fluid is...
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3854536 |
ADAPTER FOR FLUID OPERATED DRIVING TOOL
An adapter for mounting on a fluid operated driving tool which prevents operation of the tool until a predetermined condition has been attained, the condition being that the workpiece being driven...
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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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3811513 |
PORTABLE PNEUMATIC POWER TOOL
A pneumatic screwdrive wherein the motor is started by opening a normally closed valve in automatic response to axial shifting of the tool spindle when the tip of the tool is pressed against a...
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3802516 |
PORTABLE MARKING TOOL
The improved portable marking tool has a head member with an axial bore therethrough. An anvil extends through the bore and has an outer end portion with marking devices thereon. An actuator member...
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3796270 |
RELEASE STOP MEANS FOR PNEUMATIC NAIL DRIVING OR STAPLING DEVICE
A release block or stop means for use with a pneumatically operated nail driving or stapling device comprises a slidable actuating member or slip-on part slidable in the direction it is slipped or...
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3782483 |
PERCUSSION HAMMER
There is provided a percussion hammer of the type used for driving piles and the like, and including a differential diameter piston defining a ram reciprocally positioned within a differential...
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3724560 |
AUTOMATIC THROTTLE SHUT-OFF POWER TOOL
A fluid-operated rotary power tool having a motor supply valve which is moved into engagement with a movable valve sleeve in response to a clutch reaching a predetermined torque load, thereby...
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3662842 |
AUTOMATIC COUPLING SYSTEM
In an automatic coupling system, a threaded quill is connected to a rotating and advancing mechanism by a slip coupling and is biased toward a drill pipe by a spring. In the use of the system, the...
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3625295 |
AIRHAMMER
The hammer barrel has a reciprocable power piston driven on both its power and return strokes by live air under the control of a rapid action kick valve. The piston drives a tappet which, in turn,...
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3490545 |
SAFETY MECHANISM FOR PNEUMATIC FASTENER DRIVING MACHINES
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3555921 |
TOOL WITH VARIABLE GEAR
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3477521 |
AUTOMATIC POWER TOOL
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3464500 |
PERCUSSION TOOL CONTROL MEANS
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3400769 |
Hydraulic spike hammer or the like
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3386769 |
Rock-breaking apparatus
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3385378 |
Automatic air operated installation gun
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