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7578357 |
Driver with external torque value indicator integrated with spindle lock and related method
A power tool generally includes a housing and a motor assembly connected to a transmission assembly. The motor assembly and the transmission assembly are secured against rotation in the housing. A...
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7467669 |
Method for governing the operation of a pneumatic impulse wrench and a power screw joint tightening tool system
A method and a power tool system are provided for performing screw joint tightening using a pneumatic torque impulse power tool that is controlled by a control unit. A torque magnitude and a torque...
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7464612 |
Impulse energy tubing and casing make-up method and apparatus
A make-up assembly and process provides a true power-tight connection between a first and second tubular segment. Each of the segments has an externally threaded male member at one end and an...
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7395874 |
Slaving and blocking device
A slaving and blocking device for transmitting a torque from a driving part to a driven part and for stopping the driven part at a torque engaging the driven part has a slaving unit fixable on the...
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7228899 |
Warning device and method to prevent clutch burning
This invention is generally directed towards a system designed to assist the rig operator by alerting him/her that the air pressure is too low to be using the drum clutch, to provide a log for...
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7146715 |
Spin pressure power tool
Apparatus for installing a rivet nut or the like having an intentionally threaded shaft wherein the apparatus includes a hydraulically geared power tool having an inner hydraulic fluid containing a...
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7086483 |
Electric tool
An electric tool having the capability of achieving a high working efficiency is provided. This tool comprises an output shaft rotated by reversible motor, a rotational-direction switch for...
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6871153 |
Dynamic calibration qualifier
This dynamic calibration qualifier relates to a tool monitor and assembly qualifier that verifies that the correct number of fasteners have been properly installed into an assembly. The device...
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6763573 |
Assembly system for monitoring proper fastening of an article of assembly at more than one location
A more reliable and fool-proof method and apparatus for assembling an article of assembly (e.g. with predetermined screw torque requirements) in which the article of assembly has multiple fastening...
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6539603 |
Method for self-programming a power nutrunner control system during initial tightening processes
A method for self-programming a computerized power nutrunner control system for tightening a number of similar screw joints to a desired final torque level (M F ) is provided. The method includes...
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6523442 |
Torque tool assembly
A torque tool assembly having an elongated unitary, cylindrical main housing and including a drive motor subassembly and a gear train subassembly coaxially supported and operatively connected in...
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6378623 |
Torque control type impact wrench
A torque control type impact wrench includes a first storage section for storing an ideal upper limit of the pulsed torque for screwing a male screw into a female screw, as a first storage value, a...
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6371218 |
Impact-driven rotating device
An impact-driven rotating device includes an output shaft, a hammer for rotating the output shaft by imparting an impact to the output shaft, a rotation driver for rotating the hammer, an impact...
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6311786 |
Process of determining torque output and controlling power impact tools using impulse
A process to more accurately determine torque output of power impact tools using impulse. Also disclosed are processes for controlling power impact tools, in particular a mechanical impact wrench,...
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6212763 |
Torque-turn system for a three-element sucker rod joint
A sucker rod tool system for oil wells monitors both torque and angular displacement of a three-element sucker rod connection. The tool system engages two sucker rods that are at least partially...
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6047455 |
Method for simultaneous tightening of two or more screw joints
A method for simultaneous tightening of two or more screw joints to a desired pretension condition by means of a nut running tool having two or more output spindles each having an adjustable output...
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6044918 |
Percussion blow added manually operable drilling tool
A percussion blow added manually operable drilling tool, such as a hammerdrill, has a housing (2) containing an electric motor for rotating a tool bit chuck (9) about its axis, a control device (C)...
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H001821 |
Method and apparatus for operating a driver and an associated number of work tools
A method of operating a driver and an associated number of work tools includes the step of securing a first work tool to the driver. The first work tool has a first identification device attached...
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5893420 |
Multi-core cable connector for power wrench
A cable connector for assembly and mounting on a front section of a housing of a power wrench is arranged to connect at least one operation parameter sensor of the power tool to a multi-core cable....
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5715894 |
Impact screw-tightening apparatus
An impact screw-tightening apparatus is comprised of a main body and a controller. The main body includes a motor outputting pulsed drive output, a main shaft driven by the drive and connected to a...
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5535867 |
Torque regulating coupling
A torque regulating coupling for use with an impact wrench drive and socket, the coupling for connecting an impact wrench drive to the a wrench socket used to tighten threaded fasteners so that the...
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5366026 |
Impact type clamping apparatus
In an impact type clamping apparatus including a motor unit for generating a pulsatory driving torque, a main spindle driven by said pulsatory driving torque to rotate a fastening member, a...
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5181575 |
Impact wrench having torque controlling faculty
An impact wrench with a torque controlling faculty including an air motor for generating a primary torque, an oil pressure pulse generating unit for converting the primary torque into a pulsatory...
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5154242 |
Power tools with multi-stage tightening torque control
A power tool includes a DC motor for tightening a fastener through three consecutive stages. In the first stage, the motor is rotated at a high speed to tighten the fastener to a pre-seated...
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4987806 |
Electronic control circuitry for a nutrunner
Generally there is provided a nutrunner appliance for automatically driving a nut having an electrical motor, gearing, and a strain gauge to monitor the applied torque. The control system employs...
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4444273 |
Torque control system for catheads
A novel system controls accurately the torque applied to threaded connections by a cathead operating on a tong arm, usually a manual tong. A strain gage/transducer in the catline measures the pull...
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4305472 |
Apparatus for recording and limiting torque
Apparatus for recording and limiting the torque applied to a pipe by a set of power tongs, wherein the tongs are operated by a hydraulic fluid pumped through a feed line to a hydraulic motor in the...
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4244245 |
Fastener tension control system
A method and apparatus for controlling final tension on a fastener being run up and set. An efficiency factor is developed and utilized for attaining predetermined final tension on a fastener, or a...
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4110829 |
Apparatus for and method of determining rotational and linear stiffness
A meter for determining stiffness or torque gradient including, in one embodiment, a deflectable coupling connected between an output shaft and a power input shaft, sensing means for developing two...
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4060137 |
Torque wrench
A torque wrench is presented having bidirectional operating capability, accurate readout, and preset or load selection capability. The input drives a pair of ring gears, one of which is connected...
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RE29444 |
Fastener tool
A tool including a fastener rotating output member and mechanism for indicating if a fastener rotated by said output member has been tightened to a prescribed torque and/or for providing an...
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3693483 |
TORQUE POWER WRENCH MARKING DEVICE
A fluid actuated torque power wrench that includes a power driven member for rotating a fastener to a desired degree of torque and automatically discharging a predetermined quantity of colored ink...
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3675514 |
COMPOSITE POWER APPLYING MEANS
A composite power applying means to facilitate the making of a pipe connection in which a rotatable collar means is arranged to cause advancement or retraction of a pipe extending through the...
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3666021 |
POWER TOOL HAVING PROPORTIONING TRANSMISSION
Fastener setting power tool having a proportioning transmission capable of repeatedly applying fastener setting torque within rigorous torque tolerance limits irrespective of the rate of fastener...
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2808916 |
Impact wrench
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