The present invention may be used for rotating a polygonal object. A first wrench member may have a handle with two ends with a fixed jaw attached at a first end and with a cavity formed in the fixed jaw and first end. A second wrench member may be a movable jaw with a curved jaw attached to a ratcheting element. The ratcheting element may be slidably positioned in the cavity to position the curved jaw opposite the fixed jaw. The second wrench member may be constrained by the cavity and a cavity insert member to slide in said cavity about the center of an arc. The cavity insert member is positioned between a rearward wall of the cavity and the ratcheting element and retains the ratcheting element within the cavity.

A ratchet wrench includes a wrench body, a ratchet gear, a pawl and a switch assembly. The pawl has a central tooth, multiple first sub teeth and multiple second sub teeth in a concave surface thereof. Each of the first sub teeth and the second sub teeth has an inner side face abutting against opposing tooth face of the ratchet gear and an outer side face spaced apart from opposing tooth face of the ratchet gear. The first sub teeth and the second sub teeth are located symmetrical relative to the central tooth. The center of the concave surface of the pawl and the center of the ratchet gear are located on a common line that passes through the center of the central tooth of the pawl. The switch assembly is movably disposed in the head of the ratchet wrench for driving the pawl to engage with the ratchet gear.

A ratcheting driver comprises a driving mechanism combined between a handle and a working end for translating rotary motion from the handle to the working end. A switch engages the driving mechanism to switch the rotational direction of the working end between clockwise rotation and counter-clockwise rotation with an optional locked position that locks the working end. Two pairs of cooperating pawls are provided that are selectively engaged by the switch with one pawl in each of the two pairs of cooperating pawls selectively engaging one of a first ratchet gear and a second ratchet gear. Each pawl in the pair of cooperating pawls are positioned axially apart from each other in alignment with one of the first ratchet gear and the second ratchet gear.

A ratchet wrench with tooth breakage resistance includes a body having a driving hole and a transmission hole intersecting with the driving hole. An inner periphery of the driving hole includes two adjoining portions on opposite sides of the transmission hole. An arcuate portion extends between the two adjoining portions. A tooth breakage preventing device is mounted in the arcuate portion and is configured to be in contact with one of first and second outer toothed sections of either of two first pawls to prevent tooth breakage between a toothed portion of the driving hole and the one of the first and second outer toothed sections of either of the first pawls when the body is rotated to provide a ratcheting function for driving the fastener.

A pneumatic ratchet wrench includes a main body formed with a receiving chamber, a head unit, a driving unit and an air motor. The head unit defines a gas passage, and includes a ring portion and a frame portion. The ring portion includes an exit in spatial communication with the gas passage and opens toward the frame portion. The driving unit includes a driving head, and a transmission shaft mounted in the head unit. The air motor drives the transmission shaft and includes a cylinder and a rotor. The cylinder includes a venting hole allowing gas produced in the cylinder to pass through the venting hole and the gas passage and to exit from the exit to be blown toward the frame portion.

A ratchet wrench capable of rotating quickly and driving rotation includes a handle, a rotary head, a positioning mechanism, and a sleeve. The handle includes an arm and a bar body. The bar body includes an accommodating slot; the arm includes a through hole. The rotary head is connected to the arm and includes recess portions. The positioning mechanism includes a positioning element, a resilient body, and a block element. The resilient body receives the positioning element and is received in the through hole, the positioning element is correspondingly disposed in any of the recess portions, and the block element is connected to the positioning element. The sleeve receives the bar body and operably drives the block element to slide in the accommodating slot, so that the positioning element is positioned and selectively engaged with any recess portion.

A tool for retracting pistons into cylinder bores is disclosed, with a narrow gap between facing pressure plates allowing use of the tool in tight places, and ratcheting spreading of the facing pressure plates causing outward moving of the pistons, enabling work to be performed, wherein movement of a threaded stud through a coupler moves a first pressure plate.

A tool for retracting pistons into cylinder bores is disclosed, with a narrow gap between facing pressure plates allowing use of the tool in tight places, and ratcheting spreading of the facing pressure plates causing outward moving of the pistons, enabling work to be performed, wherein movement of a threaded stud through a coupler moves a first pressure plate.

A surface covering the palm, backside, index and other fingers of the hand including a wrist shroud; a repositionable flap attached transversely between the wrist and palm portions of the glove, said flap having a pocket, said pocket holding a plate made of a suitably hard material; a flap securing means allowing the flap to be secured against the wrist when not in use or against the palm of the hand for striking objects; a detachable, reversible ratchet driver disposed along the backside of the index finger in alignment with the long axis of the hand, said ratchet including a cylindrical body, a toggle button forward and reverse mechanism as used in ink pens, ratchet means and a coupler for receiving common tool bits for Philips, flat head, hex, star, Allen, socket and other fasteners of the like.

A tool and methods of use is described. The tool tightens or loosens a fit of torque-limited fittings to respective ports of a fluid-handling device. The tool includes a torque application assembly disposed within a fitting receiving end of a tool body to receive a fitting. The tool body includes a slit between ends to receive a fitting tube. The torque application assembly includes an internal feature and a notch to align with the slit and receive the tube. In both a compressive direction of rotation under a threshold torque and an opposite, decompressive direction of rotation, the internal feature is configured for engagement with a resilient feature of the fitting such that rotation of the torque application assembly causes a fitting rotation. In a compressive direction of rotation at or above the threshold torque, rotation of the torque application assembly fails to cause a fitting rotation.