Abstract: A screw-tightening tool includes a housing, a spindle, a motor, and a power-transmitting mechanism including a sun member, a ring member, a carrier member and a planetary roller. The power-transmitting mechanism is configured such that, when the ring member moves rearward to be closer to the sun member in response to rearward movement of the spindle, the planetary roller transmits power of the motor to the spindle owing to frictional force between the planetary roller and each of a first tapered surface of the sun member and a second tapered surface of the ring member. The sun member is configured to move from a first position to a second position, which is forward of the first position, when the frictional force reaches a threshold, and to move from the second position to the first position when the frictional force falls below the threshold.

Abstract: In some embodiments, the current invention relates to a method and/or system for using a standard dental handpiece for endodontic cleaning. For example, a dental adapter is disclosed having a fitting for a standard dental handpiece, a torque limiter and/or a mount for an endodontic file. For example, the adapter may be single use and/or multi use. In some embodiments, the mount includes the torque limiter. For example, an endodontic file may be connected to the mount with a friction fitting that allows rotation of the file with respect to the mount at high torque. Optionally the mount is positioned eccentrically with respect to the fitting.

Abstract: Medical devices such as osteotomes are provided. The medical device may include inner and outer members that form a working end portion. Distal end portions of the inner and outer members can cooperate to allow deflection of the working end portion. Medical devices including indicators are also provided. The indicator may communicate a direction of deflection of the working end portion to a practitioner. Additionally, medical devices including torque release mechanisms are provided. The torque release mechanism may uncouple a first portion of the medical device from a second portion of the medical device when an amount of torque applied to the medical device exceeds a predetermined value. The torque release mechanism may limit damage to components of the medical device during use of the medical device.

Abstract: Medical devices such as osteotomes are provided. The medical device may include inner and outer members that form a working end portion. Distal end portions of the inner and outer members can cooperate to allow deflection of the working end portion. Medical devices including indicators are also provided. The indicator may communicate a direction of deflection of the working end portion to a practitioner. Additionally, medical devices including torque release mechanisms are provided. The torque release mechanism may uncouple a first portion of the medical device from a second portion of the medical device when an amount of torque applied to the medical device exceeds a predetermined value. The torque release mechanism may limit damage to components of the medical device during use of the medical device.

Abstract: A torque socket having a torque adjusting function comprises: a shaft rod having two ends axially extended with an insertion tenon and a core shaft having a shaft hole and having the outer circumference thereof radially formed with a first friction surface; an adjustment member disposed in the shaft hole and having the outer circumference thereof formed with a top connection head and a connecting segment; and a shaft cylinder having two axial ends formed with a shaft slot and a sleeve slot, wherein the interior of the shaft slot is radially formed with a second friction surface being in contact with the first friction surface; when rotating the adjustment member, the outer dimension of the core shaft and the contact area of the first friction surface and the second friction surface can be altered for adjusting the torque.

Abstract: A spring compensation structure for a torque wrench includes a body, a compensation component and an engaging head. The body has a first connecting portion, The compensation component is installed on the body and has a compensation distance, wherein one end of the compensation component is abutted on the first connecting portion of the body. The engaging head has a second connecting portion; the second connecting portion is detachably disposed on the body and is abutted on the other end of the compensation component, wherein a distance between the second connecting portion and the first connecting portion is equal to the compensation distance.

Abstract: The present invention relates to a non-return ratchet type torque socket comprising a shaft rod and a shaft cylinder. A core shaft of shaft rod is sleeved with a mobile ratchet capable of axially moving; the shaft cylinder having a shaft slot formed for being sleeved with the core shaft; an accommodation slot is formed in the shaft slot thereby allowing the mobile ratchet to be accommodated; the interior of the accommodation slot is formed a fixed ratchet; a fixed ratchet teeth are mutually engaged with a mobile ratchet teeth; when the core shaft rotates in the shaft slot and the applied torque exceeds the preset torque value, the core shaft idly rotates in the shaft slot, the mobile ratchet teeth of the mobile ratchet are engaged and rotated along the fixed ratchet teeth of the fixed ratchet for axially and elastically moving so as to generate a sound.

Abstract: A torque limiting tool is provided that has a handle and a body, which in certain embodiments may be assembled by an operator. The body of the torque limiting tool has a side portion with a tubing slot for allowing tubing to exit the torque limiting tool. The handle and body have one or more abutments, designed to allow the torque limiting tool to deliver a maximum amount of torque. The torque limiting tool may be used with an adapter to allow coupling with a variety of fitting sizes and shapes. The torque limiting tool may be adapted for use with a flat bottom port, such as in an analytical instrument, like liquid chromatography, gas chromatography, ion chromatography, or in in vitro diagnostic systems.

Abstract: A power screwdriver overload prevention means (100), which is arranged between an input drive part (110) and an output drive part (102, 121) and which interrupts the transmission of torque between the input drive part (110) and the output drive part (102, 121) when a threshold torque is exceeded, is characterized in that the input drive part (110) has at least one ring of balls (130) that is arranged in a rotationally fixed manner in the input drive part, in that the output drive part (102, 121) has at least one ring of balls (140; 141, 142) that is arranged in a rotationally fixed manner in the output drive part (102, 121), and in that the ring of balls (130) that is arranged in the input drive part (110) is spring-preloaded via the ring of balls (140; 141, 142) arranged in the output drive part (102, 121) such that the balls (130) of the input drive part (110) are located in each case between two balls (140; 141, 142) of the output drive part (102, 121) and thus transmit a torque, and such that, when the th

Abstract: A shear valve protection member is disposed radially outwards of the shear valves and in the same axial position as the shear valves, which can be switched between a tightly attached state in which the strip-shaped shear valve protection member cannot move relatively to a cutting portion which connects to the other member by virtue of a frictional force generated between the cutting portion and itself by tightly attaching the cutting portion thereto in the radial direction and a tight attachment cancelled state in which the strip-shaped shear valve protection member can move in a circumferential direction relative to the cutting portion. The shear valve protection member can be switched between a position where the shear valves are covered with the shear valve protection member and a position where the shear valves are exposed from the shear valve protection member through the through holes therein.

Abstract: An adjustable torque limiting device includes a shank unit composed of first and second shanks coaxially and rotatably connected to each other, a carrier unit mounted between the shanks and having axially facing bearing regions and radially facing detent regions which cooperatively define cavities for receiving detent bodies, respectively, so as to transmit a straining force emanating from the detent regions to the detent bodies, a force transmitting member movably mounted on the shank unit and frictionally engaged with the detent bodies, an adjusting assembly turnable to axially move the force-counteracting member, and a compressible biasing member disposed between the force-counteracting member and the adjusting assembly to exert a preloaded force against the straining force.

Abstract: A torque wrench comprising a shaft, a shaft cam configured to rotate with the shaft around the longitudinal axis, a groove defined in the shaft cam, a ramp positioned within the groove at a position below the groove upper surface, an outer cam comprising an engaging member configured to selectively contact a ramp upper surface or groove upper surface. The wrench also comprises a spring to apply a downward force on the outer cam and a void defined in the groove between the ramp and a side wall of the groove to allow the engaging member to escape the groove when not contrained by the ramp.

Abstract: A multi-wrench gear head apparatus for adjusting tie-rod assemblies of dissimilar size. Such an apparatus employs a plurality of driven wrench (socket) portions, which can be provided to engage and adjust tie-rods of different and particular sizes. The wrench portions share a common gear train, such that multiple wrench portions may be driven by a single drive means.

Abstract: The present invention relates to a torque socket, which comprises a shaft rod and a shaft cylinder. Two ends of the shaft rod are respectively axially formed with an insertion tenon and a core shaft having at least a cut groove transversally on a surface. Two axial ends of the shaft cylinder are respectively formed with a shaft slot and a sleeve slot, wherein the shaft slot allows the core shaft to be inserted therein and is formed with a buckle part corresponding to the location of the flange part; the interior of the shaft slot is radially and protrudingly formed with a friction segment for tightening the core shaft, thereby forming a preset torque value between the core shaft and the shaft slot. When the socket is used to fasten a connection unit, if the preset torque of the socket is exceeded, an idle rotation state is formed.

Abstract: A torque adjustable sleeve assembly includes a first part with first teeth in the first end thereof and a second part has one end inserted into the first end of the first part. The second part includes second teeth which are engaged with the first teeth. A rod passes through the first and second parts and two springs are mounted to the rod and located in the two parts respectively. A movable member is threadedly connected to an end of the rod and adjusts the compression of the two springs to adjust an engaging force between the first and second teeth. The second part includes a driving hole to be connected with a tool bit or screw unit. The second part is made of plastic material so as to protect the tool bit or the screw unit to be tightened or loosened.

Abstract: A torque-limiting mechanism is provided for use in a variety of torque-applying tools. The mechanism includes a handle defining a housing in which are disposed a slip gear and a fixed gear. The fixed gear is attached to the housing while the slip gear is attached to drive body extending outwardly from the housing and engageable with an item to be turned utilizing the tool. The slip gear and the fixed gear are connected by teeth disposed on each gear and by ball bearings disposed within recesses located on each gear that are pressed into the recesses by a force exerted on the gears by a number of spring members disposed between an enclosed end of the housing and the fixed gear. The amount of force exerted by the springs on the gears can be varied as necessary, thereby allowing the amount of torque required to enable the slip gear to move with respect to the fixed gear to be set where desired.

Abstract: A torque-limiting driver has a handle, a body, a torque-limiting assembly and a work-piece engaging tip. The torque-limiting assembly includes an upper and lower shank that have a plurality of teeth circumferentially spaced. The teeth have a vertical face, and inclined face and a flat peak. The inclined face is defined by a radius of curvature that transitions to the flat peak. There is a spring for applying pressure across the upper and lower shank. The teeth engage for relative rotation when the handle is turned and disengage when a predetermined value of torque is exceeded.

Abstract: A screw driver capable of avoiding co-rotation of an end bit and a motor in case of sharp shooting the end bit with a groove in a head of a screw. A co-rotation preventing mechanism is engageable with an end bit mounting portion when the end bit mounting portion is at a frontward position to prevent the end bit mounting portion from being rotated in the forward direction and to allow the end bit mounting portion to rotate in the reverse direction. The preventing mechanism is disengageable from the end bit mounting portion when the end bit mounting portion is at the rearward position to allow the end bit mounting portion to rotate in both forward and reverse directions.

Abstract: A torque adaptor includes a body, a driving portion that rotates with respect to the body when a threshold torque is exceeded, a receiving portion engageable with a workpiece, and a gear plate that drives the receiving portion. The gear plate is driven by the driving portion, the driving engagement between the driving portion and the gear plate being released when a torque required to drive the gear plate exceeds the threshold torque. An adjusting member adjusts the force of engagement between the driving portion and the gear plate so as to adjust the threshold torque. The receiving portion is moveable along a longitudinal direction of the body between a first position in which the receiving portion engages the body such that a rotation of the driving portion rotates the receiving portion and the rotatable workpiece and a second position in which the receiving portion is disengaged from the body.

Abstract: A torque responsive release clutch intended for a power nutrunner and comprises a driving clutch half (11) and a driven clutch half (10) coupled to each other for torque transfer by means of axially directed teeth (16, 17), wherein one of the clutch halves is axially movable between an engagement position and a release position against the action of a bias spring (13). Each one of the teeth (16) of one of the clutch halves (10) has a substantially prismatic shape and extends axially from a base portion (19) to a top portion (20) and comprises two surfaces (22, 23) which form between them a ridge (25). The base portion (19) of the tooth (16) has a radial extent from an inner diameter (d1 to an outer diameter (d2), and the ridge (25) extends from the inner diameter (d1 at the base portion (19) to the outer diameter (d2) at the top portion (20).

Abstract: A socket includes a body having a driving portion, a receiving portion engageable with a rotatable workpiece, a first gear portion capable of being operatively driven by rotation of the driving portion in a fastening direction and an opposite releasing direction, a second gear portion functionally cooperable to drive the receiving portion for rotating the workpiece, the second gear portion being constructed and arranged to engage with and be driven by the first gear portion. The driving engagement between the first gear portion and the second gear portion is released when a torque required to drive the second gear portion exceeds the threshold amount of torque. A biasing member applies a force of engagement between the first gear portion and the second gear portion, and an adjusting member functionally cooperable with the biasing member adjusts a magnitude of the force of engagement to adjust the threshold amount of torque.

Abstract: A device for marking or identifying a female recess tool for clamping a mobile element (such as a nut), characterized in that it is adapted to be completely inserted in the female recess and maintained therein by frictional forces. It is then easy to identify, for example, features peculiar to the tool.

Abstract: A plug finishing system involves forming a counterbore in a cover board above the head of a fastener as it is driven by a specially constructed driver. A plug, which is dimensioned for the counterbore and has a reduced portion, is inserted into the counterbore and positioned so that its exterior surface is co-planar with the exterior surface of the cover board.

Abstract: A power screwdriver (10) includes a bit holder (14) bored to receive the shaft of a screwdriver bit (12) and adapted to securely hold the screwdriver bit (12) in place, and a housing (18) having a through cavity (16). The bit holder (14) is inserted into the through cavity (16) so that the bit holder (14) is rotatable about and movable along the axis of the bit holder. This arrangement securely holds the screwdriver bit and thus, minimize rattling of the screwdriver bit during rotation.

Abstract: A torque-limiting mechanism is provided for use in a variety of torque-applying tools. The mechanism includes a handle defining a housing in which are disposed a slip gear and a fixed gear. The fixed gear is attached to the housing while the slip gear is attached to drive body extending outwardly from the housing and engageable with an item to be turned utilizing the tool. The slip gear and the fixed gear are connected by ball bearings disposed within recesses located on each gear that are pressed into the recesses by a force exerted on the gears by a number of spring members disposed between an enclosed end of the housing and the fixed gear. The amount of force exerted by the springs on the gears can be varied as necessary, thereby allowing the amount of torque required to enable the slip gear to move with respect to the fixed gear to be set where desired.

Abstract: A screwing tool with a device to adjust transmitted torque comprises a handle to introduce a torque to the device, which is borne in the hollow of the handle and a drive shaft as an output element of the torque. On the drive shaft inside the handle, two separate couplings are assembled, having between them a compression spring exerting a spring force against the two couplings. Each coupling comprises a first and a second socket engaging each other by gearings at their opposing faces. The maximum torque at which the torque transmission will be interrupted can be adjusted by an adjustment element wherein the distance between the couplings can be changed, thereby resulting in a change of the tension of the spring exerting a load on the couplings. The teeth of the gearings slide and the sockets rotate relatively to each other and interrupt the torque-transmission if a pre-adjusted torque is exceeded.

Abstract: A torque indication device for a hand tool includes a handle with a processing unit connected thereto and a head having a driving member connected thereto is rotatably connected to the handle. The head has an insertion which is inserted into an axial recess of the handle. A first notch is defined in a distal end of the insertion. An intermediate member has a second notch defined in a first end thereof and a second end of the intermediate member is a flat surface. A bead is engaged with the first and second notches. A spring is received in the axial recess and a first sensor is clamped between a first end of the spring and the flat surface. A second sensor is clamped between a second end of the spring and an inside of the axial recess. The first and second sensors are electrically connected with the processing unit.

Abstract: A torque adjustable screw driver includes a handle and a shank connected to an end of the handle. Two disks are mounted to the shank and each have an inclined end surface. The two respective inclined end surfaces contact each other and one of which includes protrusions and the other has grooves which are sized to receive the protrusions. A sleeve is mounted to the shank and a spring is biased between the inner bottom of the sleeve and the two disks so that the two disks can be rotated from each other when the torque is large enough to make the two disks have relative rotational movement. The required torque can be adjusted by rotating one of the two disks to push the other disk to compress the spring.

Abstract: A torque device includes a housing rotatably accepting an inner ring assembly having a pin eccentrically disposed relative to a torque axis. A movable member is slidably or pivotably disposed in the housing to come into and out of engagement with the pin when the inner ring assembly rotates relative the housing. The movable member has a slanted face for engaging the pin. The pin and the slanted face are alternatively interchanged in position on the inner ring assembly and movable member. An adjustable biasing device biases the movable member. The biasing device includes a split ring spring and a ring segment spring. Alternatively, the biasing device includes a compression spring.

Abstract: Disclosed is a torque wrench comprising a signal generator including a spring biased against a trigger member, a sensor, and a disc biased between the spring and the sensor, a setting assembly including a cylindrical member for receiving the disc and the sensor, a cap, a knob through the cap to threadably couple to the cylindrical member, and a sliding pin inserted through a groove on a handle into the cylindrical member for coupling, and a numeric display mounted around the handle. A maximum torque of the wrench can be preset by rotating the knob and shown on the display. Also, an amount of torque being exerted by wrench can be shown on the display. The wrench may trip when the amount of torque has reached the preset maximum torque.

Abstract: A torque wrench is provided having body and a handle that is rotatably mounted to the body for adjusting the torque setting, and an axially movable sleeve operable to selectively lock the handle. The sleeve includes a rigid member and an elastomeric member, such as an O-ring, and the sleeve is configured to act against a locking ball held in a bore of the handle. The sleeve is selectively movable between two positions: (a) a locked position wherein the rigid member firmly retains the locking ball seated in one of several detents in the body, thereby preventing rotation of the handle; and (b) an unlocked position wherein the elastomeric member biases the locking ball inwardly, deflecting when the locking ball unseats from the detent to permit handle rotation. When the sleeve is in the unlocked position, the locking ball can incrementally “click” over the detents during handle rotation.

Abstract: The invention concerns a dynamometric key designed in particular for fixing an insert (22) on a handpiece (23). Said dynamometric key is characterized in that it consists of a grip element (3), and a securing element (5), said two elements being linked in frictional rotation via a spring (1) whereof the end coils have been assembled, so as to provide it with a globally toroidal shape.

Abstract: A wrench includes a rod, a retainer, a pressing member, and a casing for receiving the retainer and the pressing member. The rod includes a driving portion on an end thereof for engaging with a fastener. The retainer has a central portion securely mount to the rod to turn therewith. The pressing member is turned together with the casing when the casing is turned. The pressing member has at least one engaging member that is biased to selectively engage with one of plural retaining sections of the retainer, thereby exerting an engaging force between each of the ends of the pressing member and an associated one of the retaining sections of the retainer. When a rotational force applied to the casing is smaller than the engaging force, the retainer and the rod are turned to thereby turn the fastener.

Abstract: A screwdriver of the type having a variable torque-limiting in-line drive with a handle having a cavity and a drive bit disposed in the cavity. Over-ride drive members are disposed in the cavity and a spring exerts a force on the drive members for transmitting only a maximum force to a bit in the screwdriver. Two adjustable controls are at a back end of the tool and they are used to apply a varying force to the spring and thus limit the amount of maximum torque to be transmitted.

Abstract: A tappet screw adjuster having an outer sleeve, an inner shaft, a bearing block, a handle, and a rotary coupling disposed between the bearing block and the inner shaft. The rotary coupling is designed such that the bearing block and inner shaft rotate together when a load on the inner shaft is below a predetermined level and such that the bearing block and inner shaft do not rotate together when the load on the inner shaft exceeds the predetermined level. The rotary coupling includes a tension setting device, which is threadably secured to the bearing block, and a friction plate. The friction plate includes an annular projection that is received within a groove provided on the tension setting device.

Abstract: A gripping arrangement for gripping casing is both sufficiently flexible to conform to said casing and substantially inelastic. In a preferred embodiment the gripping arrangement comprises a sheet of zircon paper bonded to a flexible metal carrier plate which has side flanges which fit into an arcuate recess in a jaw holder and bear against the ends of an arcuate pad of resilient elastomeric material. In use, radial forces are applied uniformly through the arcuate paid whilst circumferential forces are transmitted through the flexible metal carrier plate and the side flanges to the arcuate pad and thus to the jaw holder.

Abstract: A circular saw includes a clutch assembly to surround the rotating blade shaft of the saw. The blade shaft is rotated by a shaft having a gear at one end. The clutch assembly includes a clutch gear to engage with the rotating pinion. The clutch gear is held to the blade shaft by a shaft washer that has a frictional material laminated to one end. The shaft washer is pressed to the clutch gear by spring washers.

Abstract: A percutaneous access device implantable beneath the skin of a patient includes a turret assembly containing current limiters, electrical contacts and fluid couplings and includes a sealing device having a small screw fastener at the bottom of the turret assembly. A screwdriver is provided configured to have access through a required air inlet passage to provide rapid removal and replacement of a new turret. The screwdriver includes a shaft having an eccentric drive socket. A handle has a roller clutch bearing pressed in place to allow the handle to freely turn clockwise to tighten the screw but locks the handle to the shaft for screw extraction in the counterclockwise direction. A driver captively engages a fastener for assembling a first part having a shoulder to a mating fitting having an aperture.

Abstract: A micro-torque limiting production tool and subassembly comprises a hollow cylindrically shaped housing in which a combination bit retainer clutch mechanism is supported. The combination bit retainer-clutch mechanism includes a pair of cylindrical drive and driven clutch disks of a plastic composite composed of teflon fluorocarbon and acetal resin, each having a bulbous region and a region supported front to back relative to each other to define a primary braking surface of area .pi.(D5/2).sup.2 where D5 is the diameter of the bulbous region.

Abstract: A torque tool which interfaces between a standard drive socket tool and a fastener intended to be tightened which includes an elongated cylinder having a movable element at one end intended to insertably receive a connection with the standard drive socket tool and a coupler movably carried at the opposite end of the cylinder for detachably connecting with a conventional socket to which the fastener is coupled. Inbetween the coupler and the socket tool connection, there is provided a preset torque device which establishes a torque range insuring that the fastener will not be tightened either too tight nor too loose. This device is an expansion helical spring and bears against a gear arranged in rotary sliding relationship with respect to the coupler for joining with the socket engaging the fastener. The member receiving the drive socket tool includes gear teeth which, in combination with the above-mentioned gear, are splined with internal gear teeth formed in the cylinder to house the torque range device.

Abstract: A micro-torque limiting production tool comprises a hollow cylindrically shaped handle in which a combination bit retainer clutch mechanism is supported. The combination bit retainer-clutch mechanism includes a pair of cylindrical clutch plates of a plastic composite composed of teflon fluorocarbon and acetal resin, having bulbous regions of diameter D1 in axially broad contact with each other within the central cavity of the handle to define a primary braking surface of area .pi.(D1/2).sup.2. Reduced regions of the clutch plates face in opposite directions, from a shoulder region to a remote end segment, the remote end segment of one of the reduced regions, extending through a secondary braking plate also of a plastic composite as described above, to define a secondary annular braking surface equal to .pi.[(D1-D2)/2].sup.2 (where D1 and D2 are exterior and interior diameters of such plate).

Abstract: An elongate tubular housing includes a housing first end spaced from a housing second end coaxially aligned to mount rotatably a shaft, wherein the shaft is arranged for projection through the first end, with the shaft having a screw driver bit driver at the shaft second end recessed below the housing second end in a first position, wherein the shaft is arranged for reciprocation within the shaft for projection therefrom to extend the shaft in a screw driving procedure, with the shaft including a handle for manually securing the shaft during a driving procedure.

Abstract: A two-speed power tool having a rotation motor supported in a housing (10) and driving an output spindle via three planetary reduction gears (13, 25, 22). The ring gear (17) of a first planetary gear (13) is rotatable relative to the housing (10) as well as axially displaceable between a high speed position and a low speed position. A friction coupling (37) is associated with the housing (10) and the ring gear (17) of the first planetary gear (13) to lock the latter against rotation either relative to the planet wheel carrier (16) of the first planetary gear (13) when occupying its high speed position or relative to the housing (10) when occupying its low speed position.

Abstract: An adjustable wrench particularly useful to facilitate ease of installation and removal of fluid fittings in and from a fluid system. The wrench includes an elongated handle threadedly cooperating with a body member. The body member has a pair of opposed clamping faces defining a clamping cavity adapted to receive an associated fitting. Relative rotation between the handle and body portion axially advances and retracts a smooth end face of the handle into and out of abutting engagement with a side wall of the fitting. A cutout region in the wrench body is adapted to receive one branch of an associated tee or cross type fluid fitting. The subject wrench readily facilitates clamping engagement of a fitting while coupling nuts are run up on or backed off of the fitting branches by conventional means.

Abstract: A screw-driver includes, disposed inside a driving handle, a torque limiter having a torsion spring in which one end of a helical friction band carries a ring connected by axial splines to a stem of the tool while the corresponding end of the torsion spring is fixed to a ring connected to the stem by a helical spline. An adjusting sleeve solely movable in rotation is screwed on the stem and, when it rotates, causes an axial displacement of the stem and modifies the relative angular setting of the two end rings, i.e. the torsion of the spring and consequently the value of the sliding torque.

Abstract: A shaft tightening apparatus wherein the shaft can be tightened a multitude of times to the same level of torque. The tightening apparatus comprises an exterior housing which when manually pivoted will similarly pivot within an internally located spindle. This spindle is fixedly mounted to the shaft. Upon a certain level of torque being obtained, the housing will completely pivot relative to the spindle with a further tightening force not being obtainable.

Abstract: A torque limiting wrench for limiting the magnitude of torque applied to a load is disclosed. The wrench comprises a fore-section rod having a head structure of a wrench or adjustable wrench, a fore-section member depending from the head structure and having two prongs and, a rear-section rod having a rear-section member with two flanges and a step round hollow rod depending from the rear-section member. A pivot mechanism connects the fore-section member to the rear-section member and allows the rods to pivot. An operational handle has a hollow cylinder with a base. A link shaft projects from the base and passes through the step round hollow rod. At the distal end of the link shaft is an adjustment block which is received by the interior surfaces of the rear-section member; the adjustment block is driven by rotation of the operational handle to adjust the pressure between the fore and rear-section members.

Abstract: An improved speed handle ratchet wrench that can be used in either of two distinct modes of operation to rotate the drive member at the head end of the wrench. A clutch assembly disposed within the head housing transmits axial rotation of the handle to the drive member below a selected torque load level during the first operating mode, and prevents handle rotation under normal circumstances in response to oscillation of the handle in the second operating mode. The clutch assembly includes a clutch sleeve and a pair of coaxial clutch member having frusto-conical surfaces engagable with the inside surfaces of the sleeve. Torque adjustment is achieved by moving the coaxial members towards or away from each other to vary the frictional engagement between such members and the sleeve.