| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 073862210 | For making or breaking threaded connections (e.g., torque measuring wrenches) | 45 |
| 20090188330 | Automated apparatus and method for determining physical properties of materials - Automated apparatus and method to determine physical properties of materials as they are moved relative to each other while in contact are disclosed. Physical properties between materials of interest (e.g., galling resistance, coefficient of friction, and wear rate) are derived under a variety of conditions including dry unlubricated condition, at ambient and at extreme high and low temperatures, lubricated, or when submerged. | 07-30-2009 |
| 20090205442 | OILFIELD TUBULAR TORQUE WRENCH - A method for measuring applied torque of a oilfield tubular torque wrench, the oilfield torque wrench being operable to torque a tubular about an axis of rotation and the oilfield torque wrench including a lower tong including a recess through which the axis of rotation passes during operation; an upper tong including a recess, the upper tong being mounted above the lower tong with the recess of the upper tong positioned above the recess of the lower tong so that the axis of rotation passes therethrough; pipe gripping dies in the recesses of the upper tong and the lower tong; a swivel bearing between the upper tong and the lower tong permitting the upper tong and the lower tong to swivel relative to each other while the recesses remain positioned with the axis of rotation passing therethrough; a drive system connected between the upper tong and the lower tong, the drive system being operable to generate a force vector to drive the upper tong and lower tong to swivel on the swivel bearing, the method comprising: determining at least one of (i) the actual radius measurement measured perpendicularly to the force vector and between the force vector and the axis of rotation of the tubular, and (ii) the actual force measurement of that force being applied to torque the connection; and calculating torque based on the at least one measurement. A torque wrench includes systems for measuring actual radius and/or actual force. | 08-20-2009 |
| 20090217773 | Operating device for testing torque wrenches - An operating device for testing torque wrenches is formed with a carrier for fixing a torque wrench to be tested. A transducer is coupled to the head portion of the torque wrench. A grip holder is provided for fixing the grip of the torque wrench and a deflecting mechanism is adapted for generating a torque to the head portion of the torque wrench to be tested. Further on a sliding mechanism is provided for sliding the grip in the grip holder without friction. | 09-03-2009 |
| 20090293640 | SYSTEM AND METHOD FOR DEFLECTION COMPENSATION IN POWER DRIVE SYSTEM FOR CONNECTION OF TUBULARS - The present invention generally provides methods and apparatus for connecting threaded members while ensuring that a proper connection is made, particularly for premium grade connections. In one embodiment, a method of connecting threaded tubular members for use in a wellbore or a riser system is provided. The method includes the acts of operating a power drive unit, thereby rotating a first threaded tubular member relative to a second threaded tubular member; measuring the rotation of the first threaded tubular member; and compensating the rotation measurement by subtracting a deflection of at least one of: the power drive unit, and one of the tubular members. | 12-03-2009 |
| 20100107779 | ELECTRONIC TORQUE METER - The invention provides an electronic torque meter for measuring torque of a wrench. The torque meter includes a housing in which an operation shaft and a flexible beam are disposed. When the operation shaft is rotated, the flexible beam is flexed. A measuring element is mounted on the flexible beam for detecting and measuring flexure of the flexible beam. An electronic display unit is mounted on the housing and electrically connected with the measuring element. When measuring the torque of a wrench, the measuring element directly measures the flexure and deformation of the flexible beam to obtain precise torque value. The torque value is displayed by the display unit in the form of numerals for easy reading. | 05-06-2010 |
| 20100132481 | VARIABLE TORQUE-RATE TEST JOINT - A variable torque-rate test point for the performance testing of rotary tools for threaded fasteners comprises a screw-threaded bolt ( | 06-03-2010 |
| 20100162829 | TRANSDUCER FOR MEASURING PRELOAD AND TORQUE OF A SCREW AND APPARATUS THEREWITH - A measuring apparatus ( | 07-01-2010 |
| 20100192704 | TORQUE INDICATOR DEVICE FOR A LOAD CARRIER - The present invention relates to a load carrier foot ( | 08-05-2010 |
| 20100257944 | TORQUE SENSOR ADJUSTABLE PLATFORM APPARATUS AND METHOD - A torque sensor adjustable platform apparatus is configured to include a base with a centering block between two linear grooves. Two sliders slide along the linear grooves under the control of a lead screw. Turning the lead screw causes the sliders to either approach each other or to separate. A PCB tray rides on top of the sliders. The tops of the sliders have retaining grooves keyed to accept retaining rails on the bottom of the PCB tray. The retaining grooves and retaining rails are angled so that the PCB tray moves further from the base as the sliders approach one another. A receiving module fixed into the PCB tray receives a signal from a shaft mounted torque sensor. The lead screw can be manipulated to optimizing the received signal while keeping the receiving module clear of the shaft. | 10-14-2010 |
| 20110094313 | Hand brake torque input coupler and indicator - A hand brake torque input indicator arrangement for detecting and indicating a torque of rotating mechanical components has an indicator provided between two rotatable bodies, a shaft and a wheel, which are coupled to the indicator so that a torque acting on the shaft by the wheel or vice versa can be indicated. | 04-28-2011 |
| 20110154916 | Apparatus and Method for Measuring Slip Resistance of Wretch and Apparatus for Measuring Roundness of Threaded Fastener - An apparatus for measuring the slip resistance of a wretch includes a base, at least one first threaded fastener, and at least one second threaded fastener. Both the first threaded fastener and the second threaded fastener are threaded into the base, wherein the roundness of the first threaded fastener and the roundness of the second threaded fastener are different. | 06-30-2011 |
| 20110247434 | TEST METHOD AND TOOL FOR TESTING FASTENED FASTENERS - A screw fastener testing method for verifying the status of a previously tightened screw fastener with respect to installed torque and actual torque growth per angle of rotation properties includes applying an increasing tightening torque on the fastener, measuring the torque magnitude at the start of rotation, of the fastener, measuring the rotational movement of the fastener after the start of rotation, calculating the torque growth per angle of rotation for a certain predetermined test interval of rotation from the start of rotation, comparing the torque magnitude indicated during rotation and the calculated torque growth per angle of rotation during the test interval of rotation with predetermined reference values (T | 10-13-2011 |
| 20110283813 | TESTING A TORQUE TOOL - An apparatus and associated method for gaging the repeatability of a tool is provided by a pivot assembly. The pivot assembly has a pivot member with a tool engagement feature to selectively receive a torque from the tool at a pivot axis. The pivot assembly also has a first magnetically permeable member fixed in movement with the pivot member. The pivot assembly further has a second magnetically permeable member. An abutment member abuttingly engages the pivot member to limit its pivotal travel at a position where the first and second magnetically permeable members are magnetically coupled together, without contacting each other for being separated by a gap, by a magnetic force of attraction urging the pivot member toward the second magnetically permeable member. | 11-24-2011 |
| 20120096951 | CATCHER PIN ASSEMBLY - A catcher pin assembly for attachment to a catcher link of an aircraft frame, the catcher pin assembly having an engine mounting element, a catcher pin, a compressible element, and a nut, which is lockable to the catcher pin, the compressible element being compressed between the pin and the mounting element and/or between the mounting element and the nut, in the assembled condition of the assembly, such that the compressible element applies a predetermined resistance to rotation of the catcher pin relative to the mounting element. The invention also relates to a method of testing a catcher pin assembly to determine if the catcher pin is carrying load from the catcher link, the method including applying a predetermined torque to the catcher pin sufficient to overcome the resistance to rotation of the catcher pin when it is unloaded, and determining whether the catcher pin rotates relative to the mounting element. | 04-26-2012 |
| 20120118078 | MULTIFUNCTIONAL TORQUE TOOL DETECTION DEVICE - A multifunctional torque tool detection device includes at least one connection body, at least one tool joint bar, at least one signal ring assembly, a toque detection device, an angle sensor, a plurality of signal pick-up elements, and a displaying and processing unit. The connection body has an end coupled to the tool joint bar, and the tool joint bar is connected to at least one tool bit. The connection body is encased in a tool casing. The signal ring assembly is coupled between the connection body and the tool joint bar. The toque detection device and the angle sensor are attached to the connection body so that the toque detection device and the angle sensor respectively detect a torque value and an angle value applied by the tool bit in a clockwise or counterclockwise rotation operation, and generate a torque detection signal and an angle detection signal that are supplied through the signal ring assembly. The signal pick-up elements are set in contact with the signal ring assembly to pick up the torque detection signal and the angle detection signal during the rotation of the connection body. The displaying and processing unit is connected to the signal pick-up elements to receive the torque detection signal and the angle detection signal and display an actual torque and angle that the tool bit applies in an operation thereof. | 05-17-2012 |
| 20120118079 | TORQUE COEFFICIENT MEASURING DEVICE - A torque coefficient measuring device can be used to measure an axial load produced by a torque applied to a threaded component which is mounted to the fixture. The measuring device can include a base defining a chamber therein. A load sensor is disposed within the chamber of the base. A movable load pin is housed within the base and arranged such that an axial load placed upon the load pin is transmitted to the load sensor. An attachment member is adapted to be connected with the threaded component. The attachment member is operably arranged with the load pin such that a torque applied to a threaded component mounted to the attachment member places an axial load upon the load pin. | 05-17-2012 |
| 20120325017 | SHOULDER YIELDING DETECTION DURING TUBULAR MAKEUP - A method of connecting a first threaded tubular to a second threaded tubular includes: engaging threads of the tubulars; and rotating the first tubular relative to the second tubular, thereby making up the threaded connection. The method further includes, during makeup of the threaded connection: detecting a shoulder position; and after detection of the shoulder position, monitoring for potential yielding of the threaded connection. The method further includes terminating the makeup according to: a first criterion in response to detection of the potential yielding; or a second criterion in response to absence of the potential yielding. | 12-27-2012 |
| 20130036835 | VARIABLE TORQUE-RATE TEST JOINT - The invention provides a variable torque-rate test joint for the performance testing of rotary tools for threaded fasteners. In a typical test routine a nut is repeatedly tightened by the tool and after each tightening the nut must be released and run back to its start position. The invention provides a means for rapidly releasing the pressure on the tightened nut so that it can be run back quickly and easily. The variable joint is supported by a reaction surface that is the operative face of a piston and cylinder assembly seated on a shoulder fast to a shank of the threaded fastener. A hydraulic control is provided for the piston and cylinder assembly including means for hydraulically extending the piston from the cylinder to a fixed maximum extension which defines a test position of the reaction surface, and means for hydraulically retracting the piston back into the cylinder to remove the pressure from the nut at the end of the test. During tightening the piston is extended and preferably hydraulically locked. | 02-14-2013 |
| 20130139614 | PORTABLE TORQUE WORK STATION AND ASSOCIATED TORQUING METHOD - An exemplary component torquing method includes applying torque to a component during an evaluation pass and collecting data during the evaluation pass. The method uses the data to customize a torque procedure for the component that will help ensure the component has a desired clamp load after the torque procedure. The method then torques the component according to the torque procedure. | 06-06-2013 |
| 20130192389 | METHOD FOR DETERMINING THE QUALITY OF A SCREW JOINT TIGHTENING PROCESS PERFORMED BY AN IMPULSE WRENCH - A method for determining the quality of a screw joint tightening process performed by means of a torque impulse wrench, comprising clamp load determination via calculation of the time of flight for ultra sonic waves induced into the screw joint, and comparing of a total rotation movement of the screw joint with predetermined angle limit values as a target axial load level has been indicated by the time of flight of ultra sonic waves induced in the screw joint. Occurring discrepancies between the obtained total rotation movement of the screw joint and the angle limit values would indicate a faulty screw joint and/or a malfunctioning ultra sonic wave flight time measurement, which means an unacceptable tightening process quality. | 08-01-2013 |
| 20140130609 | Thread clamping device including internal sensing, reporting and external detector - The present device relates to a thread clamping device including a plurality of movable segments with threaded inner surfaces suitable for engaging a threaded rod and including a strain gauge and transmitter therein for measuring the actual strain on the device and for transmitting this information to a receiver external to the thread clamping device, such as a receiver and display integral with a wrench for applying torque to the thread clamping device. | 05-15-2014 |
| 20140150568 | Portable Torque Verification System - A portable torque verification system for testing the accuracy of hydraulic, pneumatic, electrical, and manual torque wrenches. A first torque sensor is utilized for hydraulic, pneumatic, and electrical torque wrenches. A preferred second torque sensor measures the torque of manual torque wrenches. The second torque sensor is preferably supported by a support the height of which is preferably adjustable. Hydraulic connections to an external source of hydraulic fluid are provided so that the housing preferred for the components of the system may be closed for safety when an hydraulic wrench is tested. Electrical connections permit the use of an external torque meter. Within the housing the system additionally includes a reaction point, preferably removable and slidable, and a hydraulic pressure gauge. Also preferably, a rigid base plate is attached to the bottom of the housing and holds, inter alia, the first torque sensor, the support cylinder, and the reaction point. | 06-05-2014 |
| 20140251027 | THREADED MEMBER CAPABLE OF DETECTING TIGHTENING FORCE - A threaded member capable of detecting tightening force includes a head section, a threaded rod section and at least one strain sensor. The head section has a bottom face, a skirt section and a receiving space. The threaded rod section is disposed under the bottom face of the head section. A sink section is formed on the bottom face of the head section. The strain sensor is disposed on the bottom face of the head section and positioned in the receiving space. Due to the sink section, when the head section is strained and deformed, the strain sensor can sensitively and precisely detect the strain capacity of the head section and provide the tightening force of the threaded member for a user to more precisely tighten the threaded member. | 09-11-2014 |
| 20150013475 | ELECTRONIC TORQUE WRENCH WITH DUAL TENSION BEAM - A torque wrench comprises a handle, a wrench head having a ratcheting workpiece engaging portion, and a tensor beam defining a longitudinal axis and having a rectangular cross-section perpendicular to the longitudinal axis. A first strain gauge is coupled to one side of the tensor beam, and a second strain gauge is coupled to another side orthogonal to the one side. A processor coupled to the first and second strain gauges converts an output signal from one of the strain gauges into an equivalent torque value. The tensor beam is intermediate the handle and the wrench head and is rotatably coupled to the wrench head and is rotatable, with respect to the tensor beam, between a first position in which the processor processes an output signal from the first strain gauge and a second position in which the processor processes an output signal from the second strain gauge assembly. | 01-15-2015 |
| 20150053022 | ELECTRONIC SOCKET - An electronic socket is provided. The electronic socket includes a body, a strain gauge, an electronic control module, and a display unit. The body has a driving groove and a passive groove. The driving groove and the passive groove are connected to each other through a channel, wherein the body includes a containing space located on an outside and a recessed groove located in the containing space corresponding to the channel. The strain gauge is disposed in the recessed groove. The electronic control module and a display unit are disposed in the containing space, and the display unit is for showing a data sensed by the electronic control module which obtains from the strain gauge. | 02-26-2015 |
| 20150107373 | Apparatus and Process for Measuring the Friability of Polymer Bales - A process for measuring the friability of a material, such as a polymer bale, may include measuring the amount of force required to break-up a portion of the material. A corresponding testing apparatus for measuring the friability may include a device configured for breaking-up the portion of the material and measuring the force required to cause the break-up to occur. | 04-23-2015 |
| 20160146684 | BIAXIAL TORQUE MEASURING DEVICE - A biaxial torque measuring device includes a base and two torque sensing shafts. The torque sensing shafts are disposed on the base, wherein one of the torque sensing shafts is axially parallel to a surface of the base, the other torque sensing shaft has an angle relative to the surface of the base, the angle is greater than 0 degree and smaller than 180 degrees, and each of the torque sensing shafts has a sensing portion for sensing a torque value. | 05-26-2016 |
| 20160178466 | MACHINES AND METHODS FOR EVALUATING PREVAILING TORQUE THREADED FASTENERS | 06-23-2016 |
| 073862220 | With variable capacity or sensitivity | 1 |
| 20130125666 | VARIABLE TORQUE RATE TEST JOINT - In a variable torque rate test joint, screw-threaded first and second elements are rotated relative to one another by a tool under test. At least one spring beam is cantilevered over a pivot point to exert an axial force between the first and second elements and the torque rate of the test joint can be varied by moving the pivot point to change the axial force. The first element may be a shaft that is fixed during testing and the second element is a nut rotatably mounted on the shaft, whereby the element rotated by the tool has a minimal moment of inertia. Whichever of the first and second elements is held stationary during the test may be mounted in a hub that is locked during the test but can be rotated at the end of the test to reset the test joint. Measurements may be made of the torque and the rotation angle to derive an actual torque rate of the joint, which allows correction of errors by moving the pivot point. | 05-23-2013 |
| 073862230 | With detection of specific torque value or condition (e.g., peak torque) | 16 |
| 20080282810 | TORQUE SETTING LUG NUT WRENCH - A torque setting lug nut wrench is provided. The torque setting lug nut wrench has a socket dimensioned to fit onto a lug nut of a motor vehicle wheel, a first section extending collinearly from the socket and a second section projecting from the first section. The second section, when grasped by a user, can apply a rotational force on a lug nut within the socket. A torque detection mechanism having a preset torque limit is included and provides a signal to the user applying the rotational force to the lug nut. In an embodiment of the present invention the torque detection mechanism has a single torque setting. In another embodiment, the torque detection mechanism has two torque settings. | 11-20-2008 |
| 20080314162 | TORQUE MEASUREMENT APPARATUS - A torque measurement apparatus includes a torque sensor that detects an output torque of a measuring object, a rotation mechanism that holds the torque sensor and rotates the torque sensor, and a controller that controls the rotation mechanism so as to change a rotational angle of the torque sensor. The torque measurement apparatus can automatically and accurately measure the output torque at every rotational angle of the measuring object. | 12-25-2008 |
| 20090000397 | Method for the Angle-Controlled Turning of a Part - A power wrench ( | 01-01-2009 |
| 20090078057 | RESIDUAL TORQUE ANALYZER - A system for detecting fastener movement and measuring a residual torque in a fastener joint, including a device for applying torque to a stationary fastener in a tightened state and measuring torque and angle of rotation. The device includes a sensing system that has a gyroscope that provides a signal corresponding to the angle of rotation of the device as it applies torque to the fastener, and a torque transducer that provides a signal corresponding to the torque applied to the fastener by the device. The device also includes a computing unit in communication with the sensing system and adapted to receive the signal corresponding to an angle of rotation of the device and the signal corresponding to the torque applied to the fastener, and determine a torque at a moment of initial movement of the fastener. | 03-26-2009 |
| 20090308178 | TIGHTENING TORQUE MEASURING UNIT - A tightening torque measuring unit capable of reducing errors with respect to either a clockwise or counterclockwise direction as soon as possible is provided. A tightening torque measuring unit | 12-17-2009 |
| 20100199782 | Torque-Angle Alarm Method and Wrench thereof - A wrench is disclosed. The wrench includes a body, a storing device, a torque sensing device, an angle sensing device and a processing device. The storing device stores a predetermined torque value and a predetermined angle value. The torque sensing device senses a torque provided by the body. The angle sensing device senses the rotation of the body after the torque reaches the predetermined torque value. The processing device generates an alarm signal while the rotation of the body reaches the predetermined angle value. | 08-12-2010 |
| 20100307264 | ELECTRONIC TORQUE WRENCH - An electronic torque wrench includes a wrench member mounted to a wrench handle for receiving one or more strain gages, and a digital display pivotally attached to the wrench handle for allowing the digital display to be pivoted relative to the wrench handle to different angular position and for allowing the digital display to be easily seen by the user and for allowing the bending strain or the torque or the information detected or measured by the strain gages to be easily seen from the displayer. The displayer is pivotable relative to the wrench handle to various or different angular position to allow the displayer to be easily seen by the user. | 12-09-2010 |
| 20100326205 | SYSTEMS AND METHODS FOR PRELOADING A BEARING AND ALIGNING A LOCK NUT - An apparatus for providing a load on a bearing mounted to a shaft includes an attaching member and a press mechanism. The attaching member is releasably connected to the shaft. The press member is coupled to the attaching member and is configured to provide a compressive load to the bearing. The press mechanism includes an aligning arm configured to engage a shaft slot of the shaft to align the press mechanism relative to the shaft when the attaching member connects to the shaft. A lock nut is engageable with the shaft and has a plurality of engaging teeth configured to engage a plurality of keeper teeth of a keeper. The nut includes an outer surface having a plurality of markings corresponding to a plurality of roots of the plurality of engaging teeth to allow a user to selectively rotate the nut relative to the aligning arm to an engaging position such that a radially inner side of the keeper engages a slot of the shaft when the keeper teeth engage the engaging teeth of the nut. | 12-30-2010 |
| 20110192235 | DIGITAL DISPLAY MODULE FOR A TORSION WRENCH - A digital display module for a torsion wrench includes a housing sleeved on a shank of the torsion wrench. A microprocessor is disposed in the housing and includes a normal display model and an inverted display model therein, wherein the normal display model is provided for right-handed operator and the inverted display model is provided for left-handed operator. Multiple function keys are arranged on the periphery of the housing for selecting display models and inputting data. A display screen is mounted on the periphery of the housing and electrically connected to the microprocessor. The display screen is divided into a first display zone for showing numeral and a second display zone for showing scale ratio. A sensor is mounted on a torsion unit of the torsion wrench and electrically connected to the microprocessor for sensing the operating torsion and transmitting torsion data to the microprocessor. | 08-11-2011 |
| 20120079892 | SYSTEMS AND METHODS FOR MEASURING BEARING ENDPLAY - A system for use in measuring an end play of a wheel hub assembly includes a cap attachable to a shaft of a wheel hub assembly. A frame has a cavity receiving a measurement probe extending outwardly from the cavity. The probe contacts the cap and is configured to measure movement of the cap to determine endplay of the bearing assembly on the shaft. The frame includes a plurality of legs extending from the frame to a hub mounted on the shaft and coupled to the bearing to support the frame relative to the hub. The handle is connected to the frame and extends substantially perpendicularly relative to an axis of the shaft and extends to opposite sides of the axis. The frame, the plurality of legs and the handle are sufficiently rigid to allow a user to apply a force to the handle to move the hub in an axial direction relative to the shaft until cessation of movement of the hub relative to the shaft. | 04-05-2012 |
| 20120079893 | SYSTEMS AND METHODS FOR MEASURING BEARING ENDPLAY - A system for use in measuring an end play of a wheel hub assembly includes a follower configured to extend through an opening in a cover connected to a wheel hub. The cover covers the wheel hub such that the cover inhibits access to an end of a shaft of the wheel hub assembly, and the follower is configured to contact the end through the opening. The follower is received in a holder engageable with the cover such that the follower is movable relative to the cover and the holder to allow the follower to extend from the holder to contact the end of the shaft. A frame has a cavity receiving a measurement probe extending outwardly from the cavity. The probe contacts the follower and is configured to measure movement of the follower to determine endplay of the bearing assembly on the shaft. The frame includes a plurality of legs extending from the frame to a hub mounted on the shaft and coupled to the bearing to support the frame relative to the hub. | 04-05-2012 |
| 20130145864 | SYSTEMS AND METHODS FOR MEASURING BEARING ENDPLAY - A system for use in measuring an end play of a wheel hub assembly includes a follower configured to extend through an opening in a cover connected to a wheel hub. The cover covers the wheel hub such that the cover inhibits access to an end of a shaft of the wheel hub assembly, and the follower is configured to contact the end through the opening. The follower is received in a holder engageable with the cover such that the follower is movable relative to the cover and the holder to allow the follower to extend from the holder to contact the end of the shaft. A frame has a cavity receiving a measurement probe extending outwardly from the cavity. The probe contacts the follower and is configured to measure movement of the follower to determine endplay of the bearing assembly on the shaft. The frame includes a plurality of legs extending from the frame to a hub mounted on the shaft and coupled to the bearing to support the frame relative to the hub. | 06-13-2013 |
| 20130160566 | SYSTEMS AND METHODS FOR MEASURING BEARING ENDPLAY - A system for use in measuring an end play of a wheel hub assembly includes a structure attachable to a shaft of a wheel hub assembly. A frame has a cavity receiving a measurement probe extending outwardly from the cavity. The probe contacts the structure and is configured to measure movement of the structure to determine endplay of the bearing assembly on the shaft. The frame includes a plurality of legs extending from the frame to a hub mounted on the shaft and coupled to the bearing to support the frame relative to the hub. The handle is connected to the frame and extends substantially perpendicularly relative to an axis of the shaft and extends to opposite sides of the axis. The frame, the plurality of legs and the handle are sufficiently rigid to allow a user to apply a force to the handle to move the hub in an axial direction relative to the shaft until cessation of movement of the hub relative to the shaft. | 06-27-2013 |
| 20140069211 | TORQUE TOOL WITH DISPLAY - A torque tool for measuring and/or applying a torque, consists of a shaft-like housing with a handle at one end, wherein a measuring device is provided in the housing for detecting the torque. A connecting member is provided at the other end of the housing which transmits the torque to a work piece. A digital display indicates the applied torque or a preset torque. The display is formed as an electronic OLED display. | 03-13-2014 |
| 20150114138 | TIGHTENING DEVICE - A tightening device is able to check that a fastening member has been fastened to a desired set torque or greater after being tightened, without loosening the fastening member. The tightening device is provided with a mode switching switch for switching between a first tightening process of adjusting the output of a motor after measured torque that is measured by a torque detector has reached a preset first control start torque, such that the measured torque reaches a preset first set torque in a phased manner through repeated increases and decreases in torque, and blocking power supply to the motor when the measured torque reaches the first set torque, and a second tightening process of driving the motor at an initial output that is less than in the first tightening process, adjusting the output of the motor after the measured torque that is measured by the torque detector has reached a preset second control start torque, such that the measured torque reaches a preset second set torque in a phased manner through repeated increases and decreases in torque, and blocking power supply to the motor when the measured torque reaches the second set torque. | 04-30-2015 |
| 20160187213 | PROCESS FOR CHECKING THAT FULL THREADS ARE ENGAGED IN TIGHTENING AND ASSEMBLY - A process for checking when tightening a threaded fastener that it has been tightened on the complete threads of the fastener. In order to do this the process comprises detecting different gradients in a tightening graph representing torque as a function of another parameter and comparing each gradient with predetermined values. According to the portions of graph detected and their gradient values it is possible to determine whether tightening is correct and has taken place on the complete threads of the fastener, or if not it is possible to identify a cause of failure. | 06-30-2016 |
