A ratchet screwdriver includes a mounting seat, a control member, a driving shaft, two pawls and two springs. The mounting seat has a receiving space, a first slot and a second slot. A passage is defined through the mounting seat. The first and second slots have a hole respectively. The driving shaft has a ratchet portion located in the receiving space. 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. The control member has two control plates to pivot the pawls to disengage from the ratchet portion of the driving shaft.

A ratchet comprises a head portion with a circular central housing having modular inserts in the form of three flat ring like layers, two outer fixed ramped profile layers engaged into housing locking profiles with a sequential actuating layer capable of limited rotation between. Opposing direction pawls are situated within the fixed layer ramped profiles. The actuating layer has engagement and disengagement profiles at either end of its pawl recesses projecting the incumbent pawls against the fixed layer ramped profiles in the chosen direction projecting them inwards locking the pawl teeth within the driven element teeth, whilst simultaneously disengaging the pawls facing the other direction. The actuating layer biasing protrusion resiliently projected in the chosen direction by a robust sprung plunger acting from within a switch bore, in the reverse direction the actuating layer resiliently rotates against said sprung plunger allowing the pawl teeth to resiliently slide over one another.

A ratchet comprises a head portion with a circular central housing having modular inserts in the form of three flat ring like layers, two outer fixed ramped profile layers engaged into housing locking profiles with a sequential actuating layer capable of limited rotation between. Opposing direction pawls are situated within the fixed layer ramped profiles. The actuating layer has engagement and disengagement profiles at either end of its pawl recesses projecting the incumbent pawls against the fixed layer ramped profiles in the chosen direction projecting them inwards locking the pawl teeth within the driven element teeth, whilst simultaneously disengaging the pawls facing the other direction. The actuating layer biasing protrusion resiliently projected in the chosen direction by a robust sprung plunger acting from within a switch bore, in the reverse direction the actuating layer resiliently rotates against said sprung plunger allowing the pawl teeth to resiliently slide over one another.

A torque-limiting driver has a handle, a body, a torque-limiting assembly and a work-piece engaging tip. The torque-limiting assembly includes an upper and lower shank that have a plurality of teeth circumferentially spaced. The teeth have a vertical face, an inclined face, and a flat peak. There is a spring for applying pressure across the upper and lower shank with multiple washers interposed between the lower shaft and spring. In some instances, there is a round square drive with arched catches having preselected radii to assure operation over certain cycles at selected torque and to reduced nose cone damage and breakage at a predetermined inch pounds of torque.

A torque-limiting driver has a handle, a body, a torque-limiting assembly and a work-piece engaging tip. The torque-limiting assembly includes an upper and lower shank that have a plurality of teeth circumferentially spaced. The teeth have a vertical face, an inclined face, and a flat peak. There is a spring for applying pressure across the upper and lower shank with multiple washers interposed between the lower shaft and spring. In some instances, there is a round square drive with arched catches having preselected radii to assure operation over certain cycles at selected torque and to reduced nose cone damage and breakage at a predetermined inch pounds of torque.

A reaction arm for use with a torque generating device, the reaction arm including a reaction bar, and a body portion having a first internal diameter, and having formed on an internal surface thereof a female spline having a second internal diameter and a guide bushing having a third internal diameter, the first, second, and third internal diameter being distinctly sized.

Packaging comprising of a display structure for displaying the hand tool. A retaining structure is combined to the display structure for engaging the working end of the ratchet tool with friction to prevent rotation of the working end. A securement structure is combined to the display structure and is configured to secure a portion of the ratchet tool in a manner that permits rotation of the handle of the ratchet tool relative to the working end while preventing the ratchet tool from being separated from the securement structure.

An insulating ratchet driver with pivoting head has: a handle, a spring, a pressing knob, a driving head and a pivoting member. The pivoting member is provided with a cover made of an insulating material. All metal portions of the handle, the pressing knob and the driving head are coated with an insulating layer.

An insulating ratchet driver with pivoting head has: a handle, a spring, a pressing knob, a driving head and a pivoting member. The pivoting member is provided with a cover made of an insulating material. All metal portions of the handle, the pressing knob and the driving head are coated with an insulating layer.

An adjustable tool handle for holding a tool during use provides an improved handling of tools during use of tools that are difficult to use on their own, specifically L-shaped hexagonal wrenches. The adjustable tool handle includes a tool handle body with a handle and an adjustable opening for receiving a tool. In order to place a tool within the tool handle, a user opens the tool handle. When the tool handle is open, one leg of the tool handle is inserted into one of a plurality of openings on the back of the body and the other leg is placed within the adjustable opening. After the tool is placed within the tool handle, the tool is held in place by a securing mechanism. With the tool coupled to the tool handle, a user is able to tighten and loosen work pieces of different sizes and different types.