A ratchet wrench includes an annular head, a driving unit, a control unit, a rotary member, a second body, a bead and an end piece. The annular head receives the driving unit therein and a shaft extends from the annular head. The driving unit has a top part and a bottom part, between which a first toothed ring, a first pawl, two second pawls, a third pawl and a second toothed ring are pivotably located. The rotary member is rotatably inserted into an axial hole of the shaft and has third teeth, a recess and an engaging groove. The third teeth are engaged with the first and second toothed rings. A bead biased by a spring located in the shaft and is engaged with the engaging groove. The recess of the rotary member is connected with the second body.

A ratchet wrench includes a body having a head and a shank interconnected to the head. The head includes a driving hole extending along a first axis and receiving a driving device. The shank includes a transmission hole receiving a transmission shaft. An axis fixing device is mounted in a transmission groove between the driving hole and the transmission hole and includes an axial hole extending through the axis fixing device along a second axis that extends perpendicularly to and intersects with the first axis. A gear coupled to the driving device is received in the axial hole and is rotatable about the second axis. A driving end of the transmission shaft extends into the axial hole and is connected to the gear.

An electric ratchet wrench includes a body receiving a driving device for driving a fastener. A first transmission device is connected to the driving device. A second transmission device is connected to a power device. A clutch device is mounted between the first and second transmission devices and is normally in a coupling state for driving the fastener. When the clutch device switches to the disengagement state due to a resistance larger than a torque outputted by the power device, the body can be manually driven to overcome the resistance, forcibly driving the fastener through the large-resistance position. The clutch device returns to the coupling state after the fastener passes the large-resistance position.

One example of the present disclosure relates to a method of applying torque to an object, which threadably engages a part. The torque is applied with a wrench, comprising a first handle, a second handle, a planetary gear mechanism, a drive that comprises an internal gear and an external gear, and a first pawl, movably coupled to the first handle and biased to contact the external gear of the drive. When the drive is coupled to the object, the method comprises transmitting an input torque to the drive by rotating at least one of the first handle and the second handle relative to the part. The first pawl is movable between a first position and a second position relative to the first handle may or may not operatively engage the external gear of the drive.

A reciprocating apparatus for high torque transfer to a fitting, including tightening or loosening, having two coaxially synchronized engageable drive members provided with a sector geared radial flange engageable with an engageable rotatable drive gear, one internally supported split ratchet gear and drive socket maintained in contact with a spring biased ratchet pawl, together simultaneously rotatable in a first driving direction and independently disengageable in a second direction for reciprocative advancement of a ratchet geared socket in driving engagement with a fitting.

A ratchet wrench is provided, including: a main body, including a receiving hole, the receiving hole having a first annular inner teeth portion; a driving shaft, having a first annular outer teeth portion; a rotation seat, received in the receiving hole; at least one ring gear, each ring gear having an annular teeth portion and a second annular inner teeth portion, the annular teeth portion of the at least one ring gear engaged with the first annular outer teeth portion; and an engagement unit, disposed on the rotation seat, including a first pawl portion and at least one second pawl portion, a first teeth portion of the first pawl portion engaged with the first annular inner teeth portion, and a second teeth portion of the at least one second pawl portion engaged with the second annular inner teeth portion of the at least one ring gear.

A lug nut removal tool for applying rotational force on all lug nuts is shown having a circular frame member, a drive lug, a drive gear, and a plurality of transfer assemblies that each include an adjustable sockets. In one embodiment, rotation of the drive lug actuates the drive gear, thereby causing the each discrete transfer assembly to rotate. The transfer assemblies each include an adjustable socket for engaging a corresponding lug nut on a target wheel. In operation, each socket is first aligned with a corresponding lug nuts on a target vehicle wheel, locked in place, and then turned through the rotational force applied to the drive lug that is transferred to the its integrated transfer assembly by way of the drive gear.

A ratchet tool having a head having a first cavity is adapted to receive a cover plate and a second cavity. An aperture extends between the first cavity and the second cavity. Disposed in the first cavity is a ratchet gear and a pawl. A selector switch disposed in the second cavity and moves the pawl between a first position and a second position. A retaining clip retains the selector switch in the second cavity. The retaining clip extends into the first cavity. The pawl includes a first extended portion and a second extended portion extending from a lower end of the pawl. At least a portion of the retaining clip is disposed between the first extended portion and the second extended portion. The first extended portion and the second extended portion contact the lower surface of the first cavity. An upper end of the pawl contacts the cover plate.