A ratchet wrench comprising a ratchet head with a cylindrical bore having a central axis; a handle; a drive member (26) with a rotation axis (W-W) retained within the cylindrical bore for rotation about the central axis; and a toothed ratchet pawl (42); a cylindrical array of straight ratchet teeth arranged about one of the cylindrical bore or the drive member; and a pawl recess (36) arranged to support the pawl. The pawl may mesh with the ratchet teeth for transmission of rotation of the handle in a first direction to the drive member about the rotation axis or disengage from the ratchet teeth to decouple rotation of the handle in a second direction from the drive member. Support (37a, 37b, 46, 48, 50) for the pawl in the recess is shaped to accommodate divergence between the central axis and the rotation axis.

Provided is an apparatus for applying a specific amount of torque, comprising a body, a torque wheel, rotationally affixed to the body, comprising a plurality of teeth around an outer edge and a central spring mechanism affixed to and enclosed within the body, the central spring mechanism, comprising a spring stop and a torque spring, the torque spring comprising a torque spring end wherein the torque spring end engages the plurality of teeth and wherein, in a first rotational direction, the engagement of the torque spring end in the plurality of teeth prevents the torque wheel from rotating with respect to the body below a specified amount of torque and wherein, above the specified amount of torque in a second rotational direction, the torque spring flexes enabling the torque spring end to disengage from the plurality of teeth and enabling the torque wheel to rotate with respect to the body.

A customized tool adapter that allows for a typical wrench to be connected temporarily, but with great stability to a typical ratchet. Such an application is capable of being used with several types wrenches and ratchets, including various sizes, units of measurement and other applications and is generally hexagonal in nature having swaged gripping lips.

A ratchet wrench includes a handle and a head through which a hole is defined. A recess is defined in the inner periphery of the hole. A driving member is rotatably received in the hole. A pawl and a positioning member are respectively located in two respective ends of the recess. A spring is connected between the pawl and the positioning member. The pawl has a slot defined in a lateral side thereof so as to be connected to one end of the spring. The positioning member is a resilient member and has an engaging portion and a curved portion. An opening is defined between the engaging portion and the curved portion. The other end of the spring is engaged with the opening. The spring linearly biased between the pawl and the positioning member to engage the pawl with the driving member.

A surgical ratchet tool and system along with associated methods are disclosed. The surgical ratchet tool can include a relatively simple encompassing member that included a pawl extending into the opening for directly contacting a nut during surgery. The ratchet tool and system can be used for various types of surgery in which easy sterilization and a reduced profile for a ratchet tool is desired. For example, the ratchet tool can be used during surgery for adjustment of a spinal implant, where manipulation of a nut located on a downtube connected to a screw and/or spinal rod is desired. The encompassing member and pawl can be constructed/molded as a single piece unitary structure. A first handle and possibly a second handle can extend from an outer periphery of the encompassing member.

A driving tool is provided, including a grip body, a main body, a driving assembly, a press handle, a driven member and a toothed bar. The main body is rotatably disposed on the grip body. The driving assembly is arranged on the main body. The press handle is disposed on the grip body to drive the driven assembly. The driven assembly is disposed on the main body. The toothed bar is connected to the driven assembly and the driving assembly.

A wrench has a driving head segment defining a portion of a receiving space of the wrench and including a first driving side of the wrench. The driving side includes a plurality of driving sections for abutting against the object. The plurality of driving sections includes surfaces aligned along an axis. The driving side includes a plurality of first recesses disposed alternatively among the plurality of first driving sections.

An angle adjustment structure for pressing a hand tool comprising: a first handle, a second handle, a first spring washer, a second spring washer, a return spring, a first presser, a second presser, a first fastener and a second fastener. The first handle includes a contact sheet having a first thickness, a first toothed orifice. The second handle includes a groove having a second thickness, a second toothed orifice, a first fixing plate and a second fixing plate. A profile of the second toothed orifice is identical to a profile of the first toothed orifice. The return spring is defined on the first presser and the second presser. The first handle and the second handle adjust the angle when the first presser and second presser are pressed simultaneously, and being fixed by the first fastener and second fastener to avoid a removal.

A locking clutch ratchet wrench (1) is configured such that a clutch ring (500) forms the mid part of aminate like structure. Under torque applying conditions, the compression forces applied to the clutch ring (500) are substantially dissipated around the circumference (507) of the clutch ring. This inwardly directed force clamp against the inherently strong outer surface 405 of the drive element (400). The resultant pseudo laminate structure of the drive element (400), clutch (500) and housing (201, 202) enables the construction of a proportionately stronger ratchet wrench of reduced height or width.

A clutch wrench device is a ratchet wrench that is able to grip when rotated back and forth even in minute radians so that it can be used in very tight spaces for tightening or loosening fasteners. The device uses a sprag mechanism that is able to frictionally lock the rotatable and non-rotatable parts together when rotated one direction and rotate freely when rotated the other direction.