A hand tool for driving a fastener is provided. The hand tool includes gearing that interconnects a splined socket to a rotatable or trigger actuator and increases a rotational speed of the splined socket relative to the actuator. The hand tool may include a power tool receiver or an independent motor to drive rotation of the splined socket to advance or retract a fastener from a threaded shaft. By increasing the speed and conserving rotational inertia, the hand tool reduces the time to secure a fastener on a threaded shaft. A rotatable nut is provided. The rotatable nut can slideably orient along a first axis and threadedly orient along a second axis to fasten to an adjacent surface.

A hand tool for driving a fastener is provided. The hand tool includes gearing that interconnects a splined socket to a rotatable or trigger actuator and increases a rotational speed of the splined socket relative to the actuator. The hand tool may include a power tool receiver or an independent motor to drive rotation of the splined socket to advance or retract a fastener from a threaded shaft. By increasing the speed and conserving rotational inertia, the hand tool reduces the time to secure a fastener on a threaded shaft. A rotatable nut is provided. The rotatable nut can slideably orient along a first axis and threadedly orient along a second axis to fasten to an adjacent surface.

A length extension assembly for a hand tool comprises at least two elongated extension tubings each having a longitudinal passageway and being of a size and shape that one of the tubings may be selectively inserted into the passageway of the other tubing. The assembly also includes at least two elongated extension bars each of a size and shape that each extension bar may be inserted into an appropriate tubing. The tubings are provided with longitudinally spaced locking holes. Each bar is provided with a locking member which can enter and be engaged in one of the locking holes to connect the bar to its tubing. Optionally, one tubing could be inserted into the larger tubing and a locking member on the smaller tubing could be engaged in a locking hole of the larger tubing to connect the tubings together. Various length selections can be achieved by connecting a bar to at least one tubing or by connecting a bar to one tubing and connecting that tubing to a larger tubing. Additional length adjustment is achieved by the engagement of a locking member in an appropriate locking hole.

A torquing tool having an apertured head supporting a perimetral toothed surface closable about a rotary object in a self-fitting/clamping manner, wherein the aperture head provides a ratchet enable pawl operatively associable with the perimetral toothed surface.

An instrument for torque controlled tightening of a threaded device, including a handle, an articulable head that is articulably connected to the handle, the articulable head including a drive ratchet configured to rotate relative to the articulable head and to engage with the threaded device or a tool for engaging with the threaded device, an elastic device arranged at the handle, and a pulling mechanism operatively connecting the articulable head with the handle, the pulling mechanism having a ratchet head mechanism to engage with the drive ratchet of the articulable head, and configured to engage with the elastic device at the handle such that the elastic device is compressed or expanded upon an application of a torque to the drive ratchet and simultaneously the ratchet head mechanism blocks the rotation of the drive ratchet.

A magnetically assisted direction-changeable roller wrench has a main body, a driving member, a direction changing knob, plural rollers, a magnetic balancing member, and a magnetic positioning unit. The driving member, the rollers, and the direction changing knob are mounted in a head portion of the main body. The magnetic positioning unit includes a first and a second magnetic member located respectively on the driving member and the direction changing knob. The corresponding surfaces of the first and the second magnetic members have the same magnetic polarity, so a predetermined distance can be maintained between the first and the second magnetic members to secure the direction changing knob in position. The direction changing knob can displace each roller into contact with an engaging surface of the corresponding side of the driving member. The magnetic balancing member and the magnetic positioning unit lie in opposite directions to enable balanced magnetic attraction.

A hand tool for driving a fastener is provided. The hand tool includes gearing that interconnects a splined socket to a rotatable or trigger actuator and increases a rotational speed of the splined socket relative to the actuator. The hand tool may include a power tool receiver or an independent motor to drive rotation of the splined socket to advance or retract a fastener from a threaded shaft. By increasing the speed and conserving rotational inertia, the hand tool reduces the time to secure a fastener on a threaded shaft. A rotatable nut is provided. The rotatable nut can slideably orient along a first axis and threadedly orient along a second axis to fasten to an adjacent surface.

A wrench has a roller motion transmission mechanism that changes reciprocating motion of a driving member to unidirectional rotational motion of a driven member. The wrench has a head with a cylindrical inside wall surrounding a body with a plurality of ramps inclined toward the cylindrical inside wall. A wedging member comprising a cylindrical roller engages each ramp and the cylindrical inside wall of the head. A cage anchored to the body retains the wedging members in contiguous locations relative to the ramps and the cylindrical inside wall of the head. Retainers connected to the cage bias all of the wedging members into engagement with the ramps and the cylindrical inside wall of the head.

A ratchet wrench includes a ratchet unit which has a ratchet tube with a reception hole. A collar is connected to one side of the head and has a slit defined radially through the collar. An engaging member has a first end thereof fixed to the collar, and a second end of the engaging member extends through the slit. The second end of the engaging member is partially located within the through hole of the collar and located above the reception hole of the ratchet tube. An operation ring is mounted to the collar and connected the engaging. A C-clip is mounted to the outer periphery of the collar. When the operation ring is rotated, the second end of the engaging member is pushed to move within the through hole of the collar to position a socket located in the reception hole of the ratchet tube.

A tool with a handle indexably retained to a pin. The pin is coupled to a head of the tool. The pin allows an angle between the head and the handle to be adjusted, thereby allowing the tool to be used in hard to reach places. The pin is coupled to the head to limit axial movement without the need of a threaded fastener. The reduction of axial movement allows for smooth, consistent operation of the tool.