Abstract: In accordance with the present invention there is provided a drive tool assembly that includes a shaft having a drive end portion and a driven end portion with a longitudinal axis extending therebetween. The shaft driven end portion is flexible relative to the shaft drive end portion to permit displacement of the shaft driven end portion in an arcuate path relative to the shaft drive end portion. A torque transmitting mechanism is drivingly connected to the shaft driven end portion. Means is provided for supporting the torque transmitting mechanism on the shaft driven end portion for transmission of torque from the shaft drive end portion through the shaft driven end portion to the torque transmitting mechanism as the shaft driven end portion is displaced from the shaft drive end portion in an arcuate path along the longitudinal axis.

Abstract: A tool is provided in the form of an angled and/or offset ratchet wrench extension. The angles may be selected, but in a preferred embodiment, a ratchet extension provides a right angle drive. The tool comprises a socket driver that is adapted to be connected to a socket and a rotatable drive shaft rotatably mounted within a housing. A first direction changing transmission is provided near the end for converting the rotatable drive shaft motion to rotary motion to drive the socket driver at the specified angle. A ratchet wrench is connected to the distal portion of the rotary drive shaft. In a second embodiment, a second direction changing transmission is located near the distal portion of the rotatable drive shaft for converting the rotary motion of a ratchet wrench to the rotary motion of the rotatable drive shaft. The length of the extension may be adjustable.

Abstract: A torque multiplication system having a mechanism for torque determination including an anti torque component, an input handle, a transfer mechanism, and an output shaft for use in setting screws in spinal surgery to a predetermined target torque.

Abstract: A tool is provided in the form of an angled and/or offset ratchet wrench extension. The angles may be selected, but in a preferred embodiment, a ratchet extension provides a right angle drive. The tool comprises a socket driver that is adapted to be connected to a socket and a rotatable drive shaft rotatably mounted within a housing. A first direction changing transmission is provided near the end for converting the rotatable drive shaft motion to rotary motion to drive the socket driver at the specified angle. A ratchet wrench is connected to the distal portion of the rotary drive shaft. In a second embodiment, a second direction changing transmission is located near the distal portion of the rotatable drive shaft for converting the rotary motion of a ratchet wrench to the rotary motion of the rotatable drive shaft. The length of the extension may be adjustable. In another preferred embodiment, a chain drive and sprocket are used as the drive and angle changing direction transmission.

Abstract: The invention includes an attachment for a socket wrench that is capable of imparting torque about an axis simultaneously in opposite directions. The invention also includes a method for imparting torque about an axis simultaneously in opposite directions.

Abstract: A ratchet wrench includes a tubular member having an inner gear formed in a head, a rotor rotatably received in the head and having a compartment aligned with the inner gear for receiving a stronger latching device, two ratchet wheels rotatably received in the head, two weaker latching devices disposed in the rotor and each having a spring-biased pawl for engaging with the ratchet wheels and for controlling the driving direction of the rotor by the ratchet wheels. A drive shaft is rotatably received in the tubular member and includes a driving gear for engaging with the ratchet wheels and for controlling the driving direction of the rotor by the ratchet wheels.

Abstract: A ratchet wrench includes a handle having an internal gear formed in a head, two annular members rotatably received in the head and each having an internal gear, a stem rotatably engaged in the handle and having a pinion for engaging with and for rotating the annular members relative to the head. A shank is rotatably engaged in the head and includes four spring biased pawls each having one or more teeth for engaging with and for controlling the driving direction of the shank by the head or the annular members and the stem. The shank includes a through engaging hole having two open ends for selectively engaging with driven members by disposing the shank up aide down relative to the driven members.

Abstract: A manually-operated, adjustable dental implant torque wrench employs a screw holding sheath for placing a dental screw in a mouth of a patient. A handle offset to avoid opposite teeth to the work area is provided with a bevel gear and pinion set to translate the turning motion from a straight turning shaft in the handle to a perpendicular screw turning head. An assortment of replaceable snap-fit screw turning heads fits the various types of dental screws. An easy turn T-shaped handle with a pivotable turning knob is controlled by a torque limiting device.

Abstract: A power driven wrench comprises a head having an opening which carries a toothed or threaded rotary member substantially completely within the head. A shaft is present having a toothed or threaded inner end which engages the toothed rotary member, extending through an aperture in the head, to cause the rotary member to rotate as the shaft rotates. The shaft also has an outer end that can engage a power source to rotate the shaft. The rotary member defines an aperture capable of firmly holding within the head a driver member having a polygonal opening for receiving heads of objects to be rotated by the wrench. The driver member is replaceable by another driver member having a different polygonal opening without any disassembly of the head. A short wrench embodiment is disclosed.

Abstract: A ratchet wrench including a hollow handle, a handle sleeve fitted on the handle, a transmission rod fitted in the handle, a driving head mounted in one end of the handle and a transmission mechanism. The transmission mechanism is arranged in the handle sleeve and coupled with the handle sleeve. The transmission mechanism is also drivingly connected with the transmission rod. When rotating the handle sleeve relative to the handle, the transmission rod is driven via the transmission mechanism. The transmission rod further drives the driving head to output torque for wrenching a work piece.

Abstract: A ratchet tool includes a head and a ratchet mechanism for rotation about a first axis, a body for carrying a tool element, and a handle coupled to the head for rotation about a second axis perpendicular to the first axis, where the handle is movable axially between first and second positions. The ratchet tool is configured such that torque can be imparted to the body, to rotate a tool element carried thereby, by turning the handle about the second axis when the handle is in the first position or by moving the handle about the first axis when the handle is in the second position.

Abstract: An electrical ratchet wrench has a body, a motor, a battery set, a switch, a planet gear assembly, a connecting collar, a head and a ratcheting device. The motor is received in the body and has an output shaft with a pinion. The battery set is detachably received in the body and is electrically connected to the motor. The switch is electrically connected between the motor and the battery set. The planet gear assembly is received in the body and has a rotating base, a stub, multiple planet gears and a stationary collar. The connecting collar securely holds the stationary collar in the connecting collar. The ratcheting device is received in the head for driving a fastener to rotate and has a driven shaft connected to the stub on the rotating base. Accordingly, a cordless electrical ratchet wrench is provided and is convenient in use.

Abstract: A hand-held power tool for inhibiting uncalled-for rotation of the output shaft and for self-compensating for wear. The tool comprises a housing, a braking member fixedly mounted in the housing and an output shaft mounted in the housing for rotation. The output shaft has an outer end portion for reception of an attachment. A ratchet wheel on the output shaft is adapted to be driven in one direction or the other, has a side face facing a first surface of a wear member, and has a plurality of recesses extending inward from the side face. The wear member is keyed to the output shaft for conjoint rotation. A plurality of engagement members are received one in each recess and biased outward against the first surface to bias a second surface of the wear member against the braking member for holding the ratchet wheel against rotation opposite the driven direction.

Abstract: A reversible ratchet head assembly includes a reversal actualor (34) which is received in an opening in an output shaft assembly (48) of a tool. The output shaft assembly carries a pawl (60) which pivots on the output shaft assembly between two positions, one permitting driven rotation of an output shaft of the output assembly in a clockwise direction, and the other permitting driven rotation in a counterclockwise direction. In each position, the pawl permits the tool to be turned in the direction opposite the driven direction for ratcheting operation of the tool. When the direction of rotation is reversed in a powered tool, the reversal actuator moves relative to the output shaft assembly and engages the pawl to automatically switch the pawl from one position to the other. The reversal actuator has two spring-biased fingers (50a. 50b) which alternatively engage the pawl to move it into one position or the other.

Abstract: A ratchet wrench is disclosed. The ratchet wrench is characterized in that the head portion has a tool connector cavity, and has a ratchet cavity adjacent to one side of the handle for communication with the tool connector, the ratchet block is positioned within the ratchet block cavity which can automatically move forward, the top face of the head portion corresponding to the top edge of the ratchet cavity is a notch for engaging with a covering plate; the middle section of the external edge is a tool connector is formed into a position-limiting circular slot, and the ratchet block having a ratchet wall with ratchet teeth is provided with position-limiting block which can correspondingly engage with the circular slot, and the top face of the ratchet block is protruded with a trigger rod passed through the covering plate, and the center of the covering plate is a corresponding T-shaped trigger recess, thereby a ratchet wrench is obtained.

Abstract: A power driven wrench comprises a head having an opening which carries a toothed or threaded rotary member substantially completely within the head. A shaft is present having a toothed or threaded inner end which engages the toothed rotary member, extending through an aperture in the head, to cause the rotary member to rotate as the shaft rotates. The shaft also has an outer end that can engage a power source to rotate the shaft. The rotary member defines an aperture capable of firmly holding within the head a driver member having a polygonal opening for receiving heads of objects to be rotated by the wrench. The driver member is replaceable by another driver member having a different polygonal opening without any disassembly of the head.

Abstract: A manually-powered drive device includes a drive train substantially disposed in a hollow housing. A laterally sliding transmission shaft extending laterally in an intermediate frame portion of the housing includes first and second circumferential recesses. A transmission selector spring flexes and removably slidably couples within the first circumferential recess or the second circumferential recess as the transmission shaft laterally slides between alternate positions, thereby selecting the desired rotational direction for manipulating fasteners. Another manually-powered drive device includes a first drive assembly extending coaxially in the barrel portion of the housing and a second drive assembly extending in the intermediate frame portion of the housing between any acute angle and any obtuse angle to the first drive assembly.

Abstract: This invention relates an improvement of the torque transfer mechanism exclusively applied to the socket wrench. General speaking, it is an improvement made on the prior art of the socket wrench now popular and available in the tool market. Inside the shank of the socket wrench, it contains a rotary rod connected with a bevel gear which is further meshed with a ring gears on the wrench head. Without changing the profile of the socket wrench, it forms a torque transfer mechanism with robust structure and easy assembly. It provides stable and practical output of the torque for tightening and loosening the bolt.

Abstract: An angle type power screwdriver having a housing comprising a main housing is disclosed, within which a drive, a reduction gear coupled therewith and a spindle driven thereby are received. An angle head comprising a tool spindle arranged at an angle to the spindle and driven thereby for driving a tool comprises an angle head housing that is connected to the main housing via an adjusting device angularly adjustable. The reduction gear comprises a reaction part receiving a reaction moment with respect to the spindle, the angle head housing being connected with the reaction part for common rotation therewith and being coupled to the drive via the adjusting device.

Abstract: Ratchet tool (12) includes a head (12) and a ratchet mechanism for rotation about a first axis, includes a body (36) for carrying a tool element, a handle (18) coupled to the head for rotation about a second axis (30) perpendicular to the first axis, and allowing the handle (18) to move axially between first and second positions. A transmission includes a pinion gear (76) at one end of handle (18) and a ring gear (88) formed about the body (36). When the handle is in the first position the pinion gear (76) meshes with the ring gear (88) so that rotation of the handle (18) about the second axis (30) causes the body to rotate about the body to rotate about the first axis (24). When the handle is in the second position the pinion gear (76) is disengaged from the ring gear (88).

Abstract: A socket wrench is adjustable to have a plurality of degrees of freedom and can be adjustable in a plurality of planes includes a handle unit that is movable longitudinally on a shaft unit and a drive head unit that is pivotally movable on the shaft unit. The shaft unit includes shafts that are triangular in cross sectional shape.

Abstract: The invention described herein relates to hand powered tools which drive nuts, bolts, screws, and the like. The invention is a ratchet wrench wherein in a first setting a means to receive counterclockwise hand force and convert it into clockwise rotational driving force is provided. Said first setting also comprising a means to receive clockwise hand force and produce clockwise rotational driving force. Likewise, said ratchet wrench, when in a second setting, producing counterclockwise rotational driving force when clockwise hand force is applied and producing counterclockwise rotational driving force when counterclockwise hand force is applied. The result being that the ratchet drives the work twice as efficiently as prior art ratchet wrenches that rely on driving and slipping cycles when being cranked. By contrast, the present invention relies on cycles with two driving components each with opposite slipping cycles such that no net slipping occurs.

Abstract: The invention described herein relates to hand powered tools which drive nuts, bolts, screws, and the like. The invention is a ratchet wrench wherein in a first setting a means to receive counterclockwise hand force and convert it into clockwise rotational driving force is provided. Said first setting also comprising a means to receive clockwise hand force and produce clockwise rotational driving force. Likewise, said ratchet wrench, when in a second setting, producing counterclockwise rotational driving force when clockwise hand force is applied and producing counterclockwise rotational driving force when counterclockwise hand force is applied. The result being that the ratchet drives the work twice as efficiently as prior art ratchet wrenches that rely on driving and slipping cycles when being cranked. By contrast, the present invention relies on cycles with two driving components each with opposite slipping cycles such that no net slipping occurs.

Abstract: The present invention is a wrench device designed and configured to be utilized in tight and awkward spots. In order to achieve this configuration, the present invention is a tool that is compact in size and one that includes interchangeable socket heads. As such, the present invention comprises a first section and a second section. The first section includes a shaft having a first end and a second end. Located at the first end in a universal receiving member for receiving a ratchet. Located at the second end is a bearing. A worm gear is secured to the shaft and is located between the first end and second end. Coupled to the worm gear is a drive gear. Centrally located in the drive gear is a housing. The housing includes a receptacle for removably receiving sockets. A bearing is secured to the drive gear. The bearings are secured to a housing that covers and protects the components and includes an opening for exposing and providing access to the receptacle.

Abstract: A right angle nutrunner accessory having a drive spindle adapted to be coupled to the end of a socket wrench. A tubular sleeve encloses the coupling between the accessory housing and the wrench to protect the user's hand from an injury-producing pinch point.

Abstract: A spanner includes a spanner body having a head portion that defines a socket receiving chamber confined by a peripheral wall, and a handgrip portion extending from the peripheral wall and defining a shaft-receiving chamber. A drive shaft is rotatably disposed in the shaft-receiving chamber. A connecting member is disposed rotatably in the socket receiving chamber, and engages the drive shaft via a coupling unit. An annular sleeve is disposed outwardly of the handgrip portion, is sleeved securely on one end of the to the drive shaft, and is formed with an elongated groove. A turning handle is pivoted to the sleeve, and is turnable between a used position, in which, the handle is disposed outwardly of the groove, and a storage position, in which, the handle is received in the groove.

Abstract: This invention relates an improvement of the torque transfer mechanism exclusively applied to the socket wrench. General speaking, it is an improvement made on the prior art of the socket wrench now popular and available in the tool market. Inside the shank of the socket wrench, it contains a rotary rod connected with a bevel gear which is further meshed with a ring gears on the wrench head. Without changing the profile of the socket wrench, it forms a torque transfer mechanism with robust structure and easy assembly. It provides stable and practical output of the torque for tightening and loosening the bolt.

Abstract: A reversible ratchet head assembly includes a reversal actuator which is received in an opening in an output shaft assembly of a tool. The output shaft assembly carries a pawl which pivots on the output shaft assembly between two positions, one permitting driven rotation of an output shaft of the output assembly in a clockwise direction, and the other permitting driven rotation in a counterclockwise direction. In each position, the pawl permits the tool to be turned in the direction opposite the driven direction for ratcheting operation of the tool. When the direction of rotation is reversed in a powered tool, the reversal actuator moves relative to the output shaft assembly and engages the pawl to automatically switch the pawl from one position to the other. The reversal actuator has two spring-biased fingers which alternatively engage the pawl to move it into one position or the other. The ratchet assembly may also be applied to tools which rely on manual reversal of the pawl.

Abstract: A powered wrench includes a chain that is driven by a fluid motor. The chain engages a workpiece and rotates that workpiece in response to operation of the fluid motor. The fluid motor can be located spaced from the handle of the wrench or in the handle of the wrench. An extension can also be included to extend the reach of the wrench.

Abstract: A torque wrench assembly system comprising a housing, a transfer shaft positioned in the housing, a first drive gear arrangement coupled to the transfer shaft; at least a second drive gear arrangement slidably coupled to the transfer shaft; a first drive shaft coupled to the first drive gear arrangement and having an end extending from the housing; a second drive shaft coupled to the second drive gear arrangement and having an end extending from the housing; a torque generating device that is coupleable to the transfer shaft, to the first drive gear arrangement and/or the first drive shaft; wherein the distance between the first drive shaft and the second drive shaft is slidably adjustable by the slidability of the at least second drive gear arrangement along the transfer shaft; and wherein the coupling of the first drive gear arrangement and the at least second drive gear arrangement via the transfer shaft provides that the first and second drive shafts can provide an at least essentially equal torque.

Abstract: A low-profile wrench. An elongate, axially asymmetric housing encloses two turning members have axes of rotation that are angled with respect to one another. One of the turning members, whose axis is oriented in the elongate dimension of the housing, receives a turning force and transmits the turning force to the other turning member. The second turning member is adapted to be coupled to a fastener, for turning the fastener.

Abstract: A powered wrench includes a chain that is driven by a fluid motor. The chain engages a workpiece and rotates that workpiece in response to operation of the fluid motor. The fluid motor can be located spaced from the handle of the wrench or in the handle of the wrench. An extension can also be included to extend the reach of the wrench.

Abstract: A variable speed ratchet wrench comprising a main handle portion with an opening for receiving a planetary gear mechanism, a planetary gear mechanism with a locking device attached to an output shaft for driving wrench fittings, and a planetary gear housing cover. The planetary gear housing cover comprises an attached secondary handle that allows the planetary gears to revolve relative to the sun gear in a non-locked position and prevents the planetary gears from revolving about the sun gear when locked in a locked position, thereby providing a geared speed increase in the driven speed of the output shaft. The planetary gear mechanism includes a sun gear, a first and second planetary gear, and an inner ring gear for driving the output shaft.

Abstract: A right angle attachment configured to be attached to a small electrically powered rotary hand tool of the type that is used in woodworking, hobby work and other work. Being small, lightweight, relatively vibration free and quiet in operation, the attachment is easily attached to a hand tool in a very short amount of time without the use of any special tools. The attachment has a flexible input shaft and an output shaft that are oriented at an angular orientation, such as approximately 90 degrees relative to one another so that the flexible shaft compensates for misalignment between the input shaft and the output shaft of the tool.

Abstract: A ratchet wrench has a main body, a drive shaft, a first annular gear, a second annular gear, a drive member, a pair of first pawls, a lpair of second pawls, a rotating wheel, a control member, and a coiled spring. The main body has a through hole to receive the drive shaft, a groove to receive the drive member, and a plurality of inner teeth. The control member has a pillar and a press disk. The drive member has a through aperture and a chamber to receive the first pawls and the second pawls. The first annular gear encloses one of the first pawls and one of the second pawls. The second annular gear encloses the other of the first pawls and the other of the second pawls. The pillar is inserted through the coiled spring, the rotating wheel, and the drive member.

Abstract: A tool lengthening device for lengthening a tool and transferring torque for bit type tools. The tool lengthening device includes a plate which is elongated and has a first end, a second end. A bracket removably couples the plate to a drill. A pair of sprockets are rotatably coupled to the plate and spaced from each other. A roller chain engages the teeth of the sprockets. A first gear portion is coupled to the first sprocket. A second gear portion is coupled to the second sprocket and is releasably engaged to said drill. A bit receiving member removably engages a bit and is attached to and extending downwardly from the second sprocket.

Abstract: An elbow or right angle attachment for a power tool converts the torque of the power tool drive shaft to a transverse shaft which is supported by a housing to extend angularly with respect to the drive shaft. A pinion gear is mounted on the power tool drive shaft and a face gear is mounted on the transverse shaft interiorly of the housing. The face gear and pinion gear engage one another when the elbow attachment housing is mounted to the power tool housing. The pinion gear has teeth with a face width which allows for variability in the precise mounting of the elbow attachment housing to the power tool housing, without any significant resultant detriment to operation of the device.

Abstract: A low-profile wrench. An elongate, axially asymmetric housing encloses two turning members have axes of rotation that are angled with respect to one another. One of the turning members, whose axis is oriented in the elongate dimension of the housing, receives a turning force and transmits the turning force to the other turning member. The second turning member is adapted to be coupled to a fastener, for turning the fastener.

Abstract: A ratchet wrench includes a handle having an internal gear formed in a head. One or more ring gears are rotatably received in the head and engaged with a bevel gear which is received in the handle for rotating the ring gears. A seat is rotatably received in the head and has a driving stem and includes two rotatable pawls each having two end teeth for selectively engaging with the internal gear and for selectively driving the driving stem. One or more rods are engaged between the ring gears and the seat to drive the seat and the driving stem with the ring gears.

Abstract: A torque applying tool (10) having a housing or body (14) including a rectangular body portion (16) having a worm receiving opening (20) extending therethrough and an arcuate housing portion (18) having a gear receiving opening (22) extending therethrough at right angles to the worm receiving opening (20). A toothed gear (26) is mounted within gear receiving opening (22) and has a central opening (32) of a hexagonal shape to receive nut (N) therein to be rotated. Worm gear (38) is received within worm receiving opening (20) and has a helical thread (39) thereon formed of a concave shape to engage teeth (28) on gear (26) for rotation of gear (26) and nut (N).

Abstract: A pocket door angle drill having a right angle driver with a truly telescopic handle portion that may be extended to reach into confined spaces. The right angle driver has a casing and an internal gear assembly for translating rotary motion from a horizontal drive shaft to a vertical drive shaft. The drill further includes a telescopically extendable primary drive shaft portion that may be operatively connected to a power rotary device, and, optionally, an extension pole having an extension drive shaft for providing access to remote confined spaces.

Abstract: A power valve wrench includes a power drive assembly having a motor and a speed reduction device driving an annulus which defines a large center opening and a plurality of lugs or recesses on the interior wall of the annulus. The opening in the annulus receives a drive member having complementary lugs or recesses. The drive member, in turn defines a concentric polygonal opening which may be square, hexagonal, octagonal or other regular polygon shape which receives a complementarily configured stanchion of a valve handwheel drive member. A selection of valve handwheel drive members having 4, 6, 8, 10 or 12 slots may be utilized with the power valve wrench. A safety or retaining ring removably attached to the valve handwheel drive member retains the member on a valve handwheel.

Abstract: A double-reversible screwdriver and wrench combination hand tool constructed to include: a handle, a main body fastened to one end of the handle, the main body comprising a rear coupling end fastened to the handle, a front end terminating in a T-tube formed of a longitudinal tube and a transverse tube, and a receiving chamber on the middle between the rear coupling end and the front end, a longitudinal spindle mounted in the longitudinal tube, the longitudinal spindle having a rear end terminating in a fixed ratchet wheel suspended inside the main body, and a front end terminating in a coupling portion and disposed outside the longitudinal tube, a coupling socket coupled to the coupling portion of the longitudinal spindle to hold a screwdriver bit, enabling the screwdriver bit to be rotated with the longitudinal spindle, a first bevel gear suspended in the receiving chamber inside the main body and rotated with the longitudinal spindle, a transverse spindle mounted in the transverse tube and rotated with the

Abstract: A ratchet tool includes a toothed inner periphery defined in the ring-shaped head and a rotatable member is engaged with the toothed inner periphery. A recess is defined in a surface of the head and a driving member is rotatably received in the recess. A notch is defined in a side defining the recess and communicates between the recess and a central hole in the head. An elongated protrusion extends from the rotatable member and a disk is securely mounted to the protrusion. The driving member is rotatably engaged with the disk so that when rotating the driving member, the rotatable member is able to be rotated at a small angle.

Abstract: A wrench, which includes a hollow three-way (or two-way) casing, a plurality of coupling shafts respectively mounted in the ends of the casing for holding a respective tool accessory, and a transmission mechanism coupled between the coupling shafts for enabling the coupling shafts to be rotated synchronously, wherein the transmission mechanism includes a plurality of transmission members respectively coupled to the coupling shafts inside the casing and meshed with one another, and a plurality of compression springs respectively mounted in the coupling shafts to force the transmission members into engagement with one another, the transmission members each having a rectangular shank at one end inserted into a rectangular coupling hole on the respective coupling shaft and supported on the corresponding compression spring, and a bevel gear at an opposite end meshed with the bevel gear at the transmission member in an adjacent coupling shaft.