Abstract: A ratchet wrench drill attachment including a housing assembly, a gear assembly, and a drill assembly is disclosed. These assemblies in conjunction with one another provide a simple solution to automating a ratchet wrench. The ratchet wrench includes a drill attachment. The actuation of the drill causes the rotation of a shaft that includes a perpendicular gear mounted thereon. The flat circular perpendicular gear engages simultaneously with a top gear and a bottom gear housed within an annular portion of the housing assembly. The top gear includes an interior portion that receives a removeable socket. The removable socket can be hexagonal or square to engage with fasteners. Thereby enabling the user to loosen or tighten said fasteners automatically.

Abstract: A power ratchet wrench head has a gear set, a crank set, and a ratchet set. The crank set is connected to the gear set and has an outer casing and a crankshaft. The ratchet set is connected to the crank set and has a ratchet yoke, a transmission shaft, and a control knob. The transmission shaft engages with the ratchet yoke and has a pushing rod, an elastic element, a ratchet pawl, and two fixing pins. The pushing rod is disposed in the transmission shaft. The elastic element is disposed in the transmission shaft and abuts against the pushing rod. The ratchet pawl engages with the ratchet yoke and abuts against the pushing rod. The control knob is rotatably connected to the transmission shaft.

Abstract: An adjustable fastener engaging tool includes a plurality of jaws slidably disposed in a retainer. An actuator engages a driver jaw resulting in the jaws either moving in a first direction to enlarge a fastener-receiving aperture cooperatively formed by the jaws, or the jaws moving in a second direction to reduce the fastener-receiving aperture to grip or release a fastener.

Abstract: The present disclosure is a screwdriver. A rotating seat includes a turntable and a plurality of locking blocks. A driving rod set includes a driving rod and a ratchet gear, and the ratchet gear is located in the turntable. A retaining set includes a tooth block and an elastic piece. The tooth block includes a plurality of teeth, and the elastic piece abuts a driving plate and the tooth block. A driving seat set includes a driving seat and a positioning set, and the positioning set includes a spring and a positioning piece. A locking block is inserted between the tooth block and the ratchet gear, so that the locking tooth is locked or separated from the ratchet gear.

Abstract: An instrument for use in surgery includes a hollow shaft connectable to a drive shaft of a bone anchor insertion device in a rotationally fixed manner, a needle holder configured to hold a needle and movable axially relative to the hollow shaft, an actuator rotatable relative to the hollow shaft, and a transmission member connectable to the needle holder and movable axially relative to the actuator. The transmission member is positionable around at least part of the hollow shaft and includes a first advancement surface engageable with a second advancement surface of the hollow shaft to convert a rotational movement of the actuator into axial movement of the needle holder relative to the hollow shaft for axially advancing and retracting the needle held by the needle holder.

Abstract: A reversing lever with a compact structure is disclosed. The reversing lever can include an upper portion operable by a user to select a desired rotational direction of the tool, and a lower portion that selectively engages at pawl to choose the desired torque application. The body of the upper portion can be located between the internal wall of a ratchet head and a rear side of the lower portion of the lower portion to allow a compact reversing lever.

Abstract: A socket wrench with a reversible structure includes a rod, a sleeve, a first ratchet block and a second ratchet block. The rod has a columnar surface, and includes a first slot and a second slot. The first slot and the second slot are disposed on different positions along an axis direction of the rod. The sleeve is slidably sleeved on the rod, and includes an accommodating end and a driving end. The accommodating end includes a toothed segment which is protruded radially inward from an inner wall of the accommodating end. The first ratchet block is movably disposed in the first slot and includes a first ratchet portion. The second ratchet block is movably disposed in the second slot and includes a second ratchet portion. The toothed segment of the sleeve is selectively engaged with one of the first ratchet block and the second ratchet block.

Abstract: A pawl mechanism with a bias member that biases the pawl into engagement with the drive gear. The bias member can be a tube spring disposed within a bore to bias the pawl into engagement with the drive gear while eliminating the need for a spacer, as required by prior art ratchet wrenches.

Abstract: A ratchet mechanism of a ratchet wrench having a pawl carrier and first and second pawls. The pawl carrier includes a groove and is rotatable to cause selection of one of first and second drive directions. The first and second pawls are adapted to selectively engage with a toothed portion of a ratchet gear for selecting one of the first and second drive directions. Each of the first and second pawls includes a projection adapted to engage the groove when the pawl carrier is rotated to cause one of the first and second pawls to disengage from the toothed portion and the other of the first and second pawls to engage the toothed portion.

Abstract: The invention relates to a power tool with an electrically controlled commutating assembly comprising: an electrically controlled commutating assembly and a control unit; the electrically controlled commutating assembly has an electromagnetic unit; the electromagnetic unit is capable of performing a change in displacement due to electromagnetic action; the control unit has a control member, the control member is capable of changing a working direction of a power tool, and displacement of the electromagnetic unit is capable of actuating the control member of the control unit to make the power tool switch the working direction.

Abstract: An apparatus for applying torque to a body includes a base defining an inner chamber. The apparatus includes a plurality of pins supported by base and disposed in the inner chamber, the plurality of pins moveable relative to the base between engaged positions and disengaged positions. The apparatus includes a trigger actuatable to move at least one of the plurality of pins to the disengaged position.

Abstract: A wrench and a method for manufacturing the same are provided. The wrench includes a main body and a covering member. The main body includes a head portion and a handle. The head portion has a receiving groove. The covering member covers the receiving groove. One of the main body and the covering member has a first washer and a second washer integrally disposed thereon. The first washer and the second washer are abutted against and between the main body and the covering member. Therefore, shapes of the first washer and the second washer are designable and can be directly formed on any position of the wrench.

Abstract: A powered ratchet tool includes a housing, an output member having a toothed surface, and a drive mechanism for driving the output member. The drive mechanism includes a yoke in which the output member is arranged. A first pawl is in the yoke and is biased toward the toothed surface of the output member and a second pawl is in the yoke and is biased toward the toothed surface of the output member. A selection ring having a circumferential wall is arranged between the yoke and the toothed surface of the output member. The circumferential wall has a first window and a second window and the selection ring is moveable between a first position and a second position.

Abstract: A hand tool including a control element for receiving one or more finger digits of a user. The control element is positioned on the body component and may be in the form of an aperture defined by a perimeter surface. A user places one or more fingers within the control element and applies pressure to rotate the body component.

Abstract: This application describes surgical instruments and implants for building a posterior fixation construct across one or more segments of the spinal column. More specifically, the application describes instruments and methods for building a posterior fixation construct across one or more segments of the spinal column in a minimally invasive fashion.

Abstract: A ratchet wrench allowing easy change of rotation direction includes a main body, a ratchet gear, a pawl, a sideways pushing member, and a direction changing device. The main body has a shaft connected with a head portion. The head portion has a receiving chamber housing the ratchet gear, the pawl, and the sideways pushing member and connected to a channel in the shaft. The direction changing device has a rotating rod in the channel, a sideways pushing button for rotating the rotating rod, an engaging member at the rear end of the sideways pushing member, and an engaging groove at the front end of the rotating rod and engaged with the engaging member, which is axially offset from the rotating rod. The rotating rod can rotate the sideways pushing member and thereby displace the pawl so that a different portion of the pawl meshes with the ratchet gear.

Abstract: A ratchet wrench is provided, including a main body unit, a ratchet mechanism and a control assembly. The main body unit includes a head portion and a handle portion which is connected to the head portion. The ratchet mechanism is disposed on the head portion, and the control assembly is disposed on the handle portion.

Abstract: A rapid ratchet wrench capable of being used in one hand comprises a handle, a wrench head, pawls, and a tensioner head, wherein the wrench head is arranged at the top end of the handle, and a left pawl and a right pawl are arranged at positions close to the handle in a sleeve hole. The tensioner head is mounted at the top end of a control mechanism, and a propelling head is arranged at the tail end of the control mechanism; and the adjacent sides of the left pawl and the right pawl are respectively provided with a touch head in a staggered manner, the tensioner head can respectively touch one of the touch heads and ejects the corresponding pawl to make same open outwards, and the other touch head is in the working position.

Abstract: A ratchet wrench includes a fastener drive member and a rigid, one-piece frame having a handle portion extending along a longitudinal frame axis between a head portion and a finger loop. The fastener drive member has a pair of drive openings centered on the drive axis and facing in opposite directions, with each of the drive openings defined by one or more drive surfaces. One of the drive openings is sized to receive a fastener or driver bit of a first size and the other opening is sized to receive a fastener or driver bit of a second size greater than the first size. The finger loop has a finger receiving opening sized to receive and encircle a finger of a user. The fastener drive member is mounted in the head portion to rotate about a drive axis, and a ratchet mechanism is mounted in the head portion in operable connection to the fastener drive member to selectively transfer torque from the frame to the fastener drive member in either a clockwise or counterclockwise direction about the drive axis.

Abstract: A power wrench includes an output spindle and a socket member. The output spindle has an axial through hole that extends through the output spindle and that open at two axially opposite ends of the output spindle. The socket member is connected to one of the axially opposite ends and has a first socket hole aligned with the axial through hole and configured to engage a nut or the like. The axial through hole is configured to permit passage of a bolt when the nut is tightened by the socket member.

Abstract: A ratchet head has a mount, a knob, and a restricting unit. The mount has an assembling hole, and two positioning recesses disposed on both sides of the assembling hole. The two positioning recesses are parallel to each other and communicate with the assembling hole. The knob is rotatably assembled to the mount and has a shaft inserted in the assembling hole and having an abutting section with two first abutting faces and two second abutting faces. The two first abutting faces are parallel to each other. The two second abutting faces are parallel to each other. The restricting unit with elasticity has two arms respectively mounted in the two positioning recesses, respectively disposed on both sides of the shaft, and respectively abutting against the two first abutting faces that respectively face to the two positioning recesses. The restricting unit is able to steadily maintain the operating directions of the ratchet head.

Abstract: A ratchet screwdriver includes a mounting seat, a fixing ring, a control member, a driving shaft, two pawls, two springs, a fixing ring, a control member, a bead, a positioning spring and a bolt. The mounting seat has a front with a first slot, a second slot, a first extension slot, a second extension slot, a passage, a first hole and a second hole. The driving shaft has a ratchet portion. Each pawl is biased by one spring so as to be engaged with the ratchet portion. The control member is rotatably mounted to the mounting seat and the driving shaft to pivot the pawls to engage or disengage with the ratchet portion.

Abstract: A push-pull bit detaching and mounting tool including a casing is described herein. A ratchet wheel seat having a conveying passage is disposed at an end portion of the casing. A ratchet wheel head having bit mounting holes is disposed on the ratchet wheel seat. A ratchet wheel control mechanism is disposed between the ratchet wheel head and the ratchet wheel seat. An accommodating groove is formed on the casing. A bit storage seat is disposed in the accommodating groove. A plurality of storage holes are formed on the bit storage seat in the circumferential direction. A positioning structure is disposed between the bit storage seat and the accommodating groove. The casing has a mounting seat. A push-pull rod having a first permanent magnet at an end portion is disposed on the mounting seat, and an axial positioning mechanism is disposed between the push-pull rod and the mounting seat.

Abstract: The ratchet wrench comprises a functional head (1) and a handle (2) hingedly connected to each other, a ratchet toothed wheel (4) rigidly attached to the functional head (1), a movable ratchet pawl (5) installed on the handle (2), a working spring (6) that biases the ratchet pawl (5) against the ratchet wheel (4), a movable releasing member (7) installed on the handle (2) and manually operable to move the ratchet pawl (5) to a position out of engagement with the ratchet wheel (4), and a movable locking element (69) installed on the handle (2) and manually operable between a rest position, in which it does not interfere with the ratchet pawl (5), and a locking position, in which it comes into contact with the ratchet pawl (5) holding it in said engaged position with the ratchet wheel (4).

Abstract: A locking structure for a hand tool contains: a body including a driving head. The driving head has an accommodation cavity and a notch, and the accommodation cavity has a trench and an indentation. A fixer is accommodated in the indentation and has a limiting groove, a cutout, a post, and a recess. A second actuation member is housed in the limiting groove and has a locking portion, a locating portion, a protrusion, a control portion, a first aperture, and a second aperture. A release button is accommodated in the notch and has a tough for housing a retaining element. Furthermore, a first stop ring is located under the second actuation member and is configured to separate the second actuation member from the first actuation member, a ratchet rotation block is fixed under the first stop ring, and a second stop ring is mounted under the ratchet rotation block.

Abstract: A bidirectional ratchet structure includes a base, a first pawl element, a second pawl element, two reset elements, a direction controller and a driving element. The first pawl element, the second pawl element, the direction controller and the driving element are pivotally disposed at the base. The first pawl element includes a first engaging portion. The second pawl element includes a second engaging portion. The first engaging portion and the second engaging portion are pushed to protrude from the base alternatively. The two reset elements are for pushing the first engaging portion and the second engaging portion to protrude from the base respectively. The first pawl element and the second pawl element are surrounded by the direction controller and the driving element. The direction controller is for pressing the first pawl element or the second pawl element toward the base.

Abstract: A double ratchet structure includes a base, a first directional member, a second directional member, two resetting members, a choosing member, a driving member and a pivoting member. The first and second directional members are pivotally disposed on the base, and the first directional member pivots oppositely to the second directional member. The resetting members are respectively disposed between the first or the second directional member and the base for protruding the first or the second directional member from the base. The choosing member is coaxially and pivotally disposed on the base and covers the first and the second directional members. The choosing member catches the first or the second to pivot toward the base. The driving member is coaxially and pivotally disposed on the base through the pivoting member for engaging with the first or the second directional member.

Abstract: A driving end of a tool includes a body including a chamber. A first engaging member is rotatably disposed in the chamber and defines a first engaging section. A second engaging member is rotatably disposed in the chamber and defines first and second engaging ends. The first engaging section is engaged with the first engaging end. At least one pawl is slidably disposed in the chamber and defines a first engaging portion. The second engaging end is selectively engaged with the first engaging portion. A switch is pivotally engaged with the body and abutted against the at least one pawl.

Abstract: A ratchet wrench includes: a main body having a first accommodating space; a tool head disposed removably within the first accommodating space and having an annular groove formed in an annular peripheral surface thereof, and a ratchet tooth portion; a direction control unit including a pawl block, the pawl block having a middle portion connected pivotally to the main body, and two pawl tooth portions flanking the middle portion; and a covering unit including a mounting plate, and an insert member disposed movably on the mounting plate and biased to engage the annular groove.

Abstract: A multiple size socket is provided with a base, a socket body, and a positioning unit. The base is provided with a connecting portion, two pivot portions and a pivot hole formed in each of the pivot portions. The socket body is pivoted between the two pivot portions and includes a plurality of engaging cavities and an inserting hole aligned with the two pivot holes. The positioning unit is inserted in the two pivot holes and the inserting hole. The engaging cavities are different in size and shape from one another, so that the socket is capable of driving different sized fasteners.

Abstract: A ratcheting tool and a method of using the same, the ratcheting tool being formed by a handle, a substantially perpendicular cylinder and a ratcheting mechanism. The cylinder is adapted to be positioned over a nut or bolt head and comprises jaws adapted to engage the nut or bolt head when pushed laterally theretowards. When the arm is squeezed with the handle, a slider block is pushed towards the nut or bolt head causing the jaws to laterally engage the nut or bolt head. The ratcheting mechanism is between the cylinder and the jaws and allows torque to be applied to the nut or bolt head in a desired direction when the handle is moved in a circular motion around the main axis of the cylinder. The jaws are allowed to rotate within the cylinder in a direction opposite to the desired direction.

Abstract: A handled ratcheting tool is able to be used in a standard, L handle or T handle orientation. The handled ratcheting tool includes a handle, a stem, a ratcheting mechanism and multiple tools. Multiple tools are coupled to the ratcheting mechanism which are able to form the L and T configurations depending on which tools are positioned in an open position and which are in a closed position.

Abstract: A driving end of a tool includes a body including a chamber and a bore. The chamber includes first and second pawls disposed therein. A first engaging member is rotatably disposed in the chamber and defines a first engaging section with a plurality of teeth. A second engaging member is rotatably disposed in the chamber and defines first and second engaging areas. The first engaging section is engaged with the first engaging area. The first and second engaging areas are selectively engaged with the first and second pawls. A switch includes an activating member inserted through the bore and received in the second engaging member and operably rotatable to first and second positions selectively.

Abstract: A ratchet screwdriver includes a handle, a shaft and a ratchet switch device. The shaft is connected to the front end of the handle and a mounting member is connected to the handle so as to be connected with the shaft. The ratchet switch device is located in the chamber in the rear end of the handle and includes a base, a frame, two engaging members, a positioning member, a resilient plate, two positioning pieces, and a ratchet member a switch. The shaft can be replaced by operating the mounting member on the handle. The switch on the rear end of the handle can change the direction of the ratchet member to output torque via the shaft.

Abstract: A socket wrench with a positioning device contains: a body including an accommodating cavity, a first face, and a second face. A toothed holder is accommodated in the accommodating cavity and has a polygonal groove, a first circular portion, a second circular portion, and a ratchet protrusion between the first circular portion and the second circular portion. The first circular portion is inserted to the first face, the second circular portion is inserted to the second face, and the ratchet protrusion engages with a ratchet device. A positioning device includes at least one retaining element disposed on the first circular portion and horizontally moving in the polygonal groove. The first circular portion has a resilient element and a pressing loop which are fitted on the first circular, and the pressing loop has a recess defined on an inner face thereof to correspond to the at least one retaining element.

Abstract: A dual-pawl ratchet wrench mechanism is disclosed having a stop mechanism for limiting over-travel of a reversing lever for selecting drive directions. The stop mechanism is formed on a disc is selectively engageable with first and second pawls to move the pawls into and out of engagement with a ratchet gear to determine a torque drive direction, the ratchet gear capable of providing torque to a working piece in the selected drive direction. The design simplifies manufacturing. Additionally, the reversing lever is assembled with the mechanism in a manner to improve sealing.

Abstract: A wrench includes a body having a working end which has a first toothed portion, a first room, a second room, a third room and a first pivot cavity. The second and third rooms open through the top of the body. A driving unit is pivotably connected to the working end and has a first recess and a second recess for receiving a first pawl and a second pawl therein. The first pawl has teeth engaged with the first toothed portion, and the second pawl has teeth engaged with a second toothed portion of a first teeth disk in the first room. A second teeth disk is pivotably located in the second room and has a forth toothed portion which is engaged with a third toothed portion of the first teeth disk. A shaft is pivotably located in the third room and is connected to the second teeth disk.

Abstract: A ratchet screwdriver includes a mounting seat, a fixing ring, a control member, a driving shaft, four pawls and four springs. The mounting seat has a space, two first slots and two second slots. A passage is defined through the mounting seat. The first slots each have a first hole and the second slots each have a second hole. The driving shaft has a ratchet portion located in the space. The four pawls are biased by the four springs so as to be engaged with the ratchet portion. The fixing ring is connected to the mounting seat and the four pawls are pivotably connected to the fixing ring. The control member is rotatably mounted to the mounting seat and the driving shaft. The control member has two control plates to pivot the pawls to disengage from the ratchet portion of the driving shaft.

Abstract: A ratchet wrench includes a reception hole defined through the function end of the wrench and a recess is defined in the inner periphery of the reception hole. A ratchet wheel is rotatably located in the reception hole. A pawl, a restriction member and a resilient member are received in the recess. The two ends of the resilient member respectively contact the pawl and the restriction member to bias the pawl to be engaged with the ratchet wheel. A restriction ring is located in the reception hole and has a rod extending therefrom, the rod extends into the recess. The restriction member is located between the rod and the inner periphery of the recess.

Abstract: A powered ratchet drive for a ratchet wrench includes a pair of elongate pawls for driving an output member of the wrench. Each pawl may have a lower portion pivotally attached to a rocker and an upper portion comprising teeth for engagement with teeth of the output member to turn the output member. The upper portion of the pawl extends outward at an angle with respect to the lower portion. The ratchet may include a compression spring secured inside a cavity of each pawl for biasing the pawl into engagement with the output member. The ratchet also includes a reversing switch mechanism for selectively configuring the ratchet in a forward-driving configuration and in a reverse-driving configuration. The switch mechanism includes a cam disposed between the pawls. The cam has a groove for receiving one of the pawls during operation depending on the configuration of the ratchet.

Abstract: The invention provides a ratchet tool that includes a tool head, a drive including a sun gear, a ratchet mechanism, and planet gears mounted to a carrier and meshed with the sun gear. The tool head has drive teeth meshed with the planet gears. The ratchet mechanism is mounted to the tool head and is operative to directly couple the tool head to the input when the tool head is rotated in a first direction and to uncouple the tool head from the input when the tool head is rotated in a second opposite direction. Rotation of the tool head in the second direction, while the user holds the carrier stationary, rotates the drive in the first direction.

Abstract: A selectively one-way wrench includes a handle, a socket, a pawl and a switch. The handle includes a grip, a head in a plane other than that of the grip, a transient portion extending to the head from the grip, and a recess in the head near the transient portion. The socket includes a series of teeth placed in the head. The pawl includes two pawls placed in the head and a spring for interconnecting the pawls. Each of the pawls includes teeth for engagement with the teeth of the socket. The switch includes a sliding unit movable between two positions for engagement with the pawls and a finger-contacting element extending from the sliding unit. The finger-contacting element is placed in the recess except an upper end placed above the grip.

Abstract: A reversible ratchet wrench includes a driving member received in a receiving space of a body, rotatable about a rotational axis relative to the body, and having an annular toothed portion. First and second pawls are aligned with each other along an axis parallel to the rotational axis and are alternatively disposed. The first and second pawls are received in a compartment in the body. One of the first and second pawls selectively meshes with the driving member. Each of the first and second pawls includes a ratcheting portion. The ratcheting portions selectively mesh with the annular toothed portion. A control member is pivotably received in the compartment. An end of the control member presses against the first and second pawls when the reversible ratchet wrench is switched between first and second positions. The control member can be actuated to move the first and second pawls.

Abstract: A ratchet wrench adjustable in clamping size is provided with a body, a ratchet wheel, an adjustment member, two engaging members and a spring. The body includes a head portion, a handle and a switch member. The two engaging members are oppositely located on the ratchet wheel and the adjustment member and each include an engaging portion, a neck portion connected to the engaging portion and located in the ratchet wheel, and an upper portion connected to the neck portion and located in the adjustment cavity of the adjustment member. By such arrangements, rotating the rotating portion of the adjustment member adjusts relative positions of the upper portions of the two engaging members in the adjustment cavity of the adjustment member, and makes the neck portions of the engaging members to move along the guide slot so as to change a distance between the two engaging portions.

Abstract: A ratchet including a handle and a head connected to the handle. The ratchet further includes a rotating drum rotationally mounted within the head. A top edge of the rotating drum is open and a bottom edge of the rotating drum is closed by a surface. A rotating head extends from the surface of the rotating drum. One or more pawls within the head interact with the rotating drum to drive the rotating drum and rotating head in a first direction or a second direction in response to a force being applied to the handle. The ratchet includes a direction toggle connected to the one or more pawls being operable to engage the one or more pawls for selecting to drive the rotary head of the rotating drum in the first direction or the second direction corresponding to a first position or a second position of the direction toggle, respectively.

Abstract: A ratchet wrench includes a wrench head, a ratchet assembly and a bushing. The wrench head is made of metal and defines a cavity therein. The ratchet assembly is disposed in the cavity of the wrench head and has an outer configuration corresponding in shape to a periphery of the cavity of wrench head and being slightly smaller than the cavity of the wrench head. The bushing is made of a metal with a hardness greater than that of the wrench head and is fitted in a clearance defined between the ratchet assembly and an inner wall of the cavity of the wrench head. Moreover, the bushing has a substantially consistent thickness so that the bushing has an outer periphery and an inner periphery both corresponding in shape to the periphery of the cavity.

Abstract: A reversing device for a ratchet wrench comprises a body of the ratchet wrench, a ratchet wheel, a left engaging member, a right engaging member, a left spring, a right spring, a control member, and a control cover. Both of the left and right engaging members, when subjected to a force, will not be in contact with the control member, so that, the problem that the left or right engaging member, when subjected to a force, will push the control member to reversely rotate and cause slippage, can be solved.

Abstract: A double ratchet structure includes a base, a first directional member, a second directional member, two resetting members, a choosing member, a driving member and a pivoting member. The first and second directional members are pivotally disposed on the base, the first directional member pivots oppositely to the second directional member. The resetting members are respectively disposed between the first or the second directional member and the base for protruding the first or the second directional member from the base. The choosing member is coaxially and pivotally disposed on the base and covers the first and the second directional members. The choosing member catches the first or the second to pivot toward the base. The driving member is coaxially and pivotally disposed on the base through the pivoting member for engaging with the first or the second directional member.

Abstract: A bidirectional ratchet structure includes a base, a first pawl element, a second pawl element, two reset elements, a direction controller and a driving element. The first pawl element, the second pawl element, the direction controller and the driving element are pivotally disposed at the base. The first pawl element includes a first engaging portion. The second pawl element includes a second engaging portion. The first engaging portion and the second engaging portion are pushed to protrude from the base alternatively. The two reset elements are for pushing the first engaging portion and the second engaging portion to protrude from the base respectively. The first pawl element and the second pawl element are surrounded by the direction controller and the driving element. The direction controller is for pressing the first pawl element or the second pawl element toward the base.

Abstract: A ratchet wrench includes a head having a first compartment rotatably receiving a drive member. A second compartment is defined in an inner periphery of the first compartment and receives first and second pawls. A switch is pivotably mounted in a control groove of the head and controls engagement relations between the first and second pawls and the drive member. A limiting member is connected between the first and second pawls and maintains two closest teeth respectively of first and second toothed sections of the first and second pawls to be in a restraining spacing that is smaller than a jam spacing, preventing the first and second pawls from jamming between the drive member and a wall of the second compartment.