Improved techniques for remotely monitoring and managing fasteners and fastener driver conditions, are provided. In some aspects of the invention, conditions of a fastener and/or structural material(s) held by the fastener and/or connector, are monitored by a control system including sensor(s) at least partially embedded in, on or throughout the fastener and/or structural material(s). When an adverse condition is sensed, a torque may be remotely applied to the fastener, in some embodiments. In some embodiments, other remedial actions may be taken by the control system. In some embodiments, such sensor(s) include a magnetizable array, which may include one or more charge-carrying and/or otherwise magnetic wires or particles on, about, or embedded within, the fastener and/or structural material. In some embodiments, such remote monitoring includes testing a magnetic signature of the fastener and/or structural material (e.g., via remote scanning and/or testing).

An anti-rolling socket includes a socket body, a groove, a through hole, and a stopper. The socket body has an inner peripheral surface and an outer peripheral surface. The groove is disposed in, and along the circumference of, the inner peripheral surface. The through hole is disposed between the inner peripheral surface and the outer peripheral surface and communicates with the groove. The stopper includes a stop ring and a stop section. The stop ring is fitted in the groove. The stop section is connected to the stop ring. The stop section projects from the through hole and protrudes from the outer peripheral surface. The stop section can abut against a flat surface to prevent the socket body from rolling on the flat surface.

A motorized adjustable wrench is provided. The motorized adjustable wrench may include a wrench head, which wrench head may include a geared wrench having an opening to receive and engage a nut, a geared wrench support mechanism, a plurality of cooperating gears. The motorized adjustable wrench may include a handle portion, which handle portion include a motor in mechanical communication with a drive gear, and a switch. The motorized adjustable wrench may include a plurality of wrench heads, where each of the plurality of wrench heads includes a geared wrench of a different size.

A wrench head comprises a working axis, a first jaw, a second jaw, and a third jaw. The first jaw comprises first-jaw arcuate convex contact surface, second first-jaw arcuate convex contact surface, third first-jaw arcuate convex contact surface, and first-jaw planar contact surface. The second jaw is coupled with and pivotable relative to the first jaw and comprises a second-jaw arcuate convex contact surface and a second-jaw planar contact surface. The third jaw is coupled with and pivotable relative to the second jaw and comprises a third-jaw arcuate convex contact surface and a third-jaw planar contact surface.

A shaft securing mechanism is provided that includes pins, bearings or other securing members that are biased inwardly at an angle with respect to the axis of the shaft being engaged by the mechanism. The angled orientation of the engagement of the pins with the shaft enables the pins to more securely hold the shaft relative to the handle without significant slop or play in the lateral or longitudinal directions. The mechanism also includes a tapered inner surface to increase the ease of alignment of the shaft with the mechanism, which allows the shaft to be engaged with the handle by only pressing and rotating the shaft into the mechanism within the handle.

Generally, a service tool and method of using the service tool is disclosed. The service tool includes a first hex key having a first diameter size and defines a first cavity along a longitudinal length thereof. The service tool further includes a second hex key having a second diameter size smaller than the first diameter size, and the second hex key is designed to slidably translate within the first cavity of the first hex key. The service tool can, for example, be used to service a liquid line valve using the second hex key and a suction line valve using the first hex key, with the second hex key retracting into the first hex key when servicing the suction line valve.

An external tooth type ratchet screwdriver includes a handle and a ratchet head, the handle is provided with a ratchet seat, a first pawl and a second pawl; the ratchet head is of a round-bar shape and passes through the center of the ratchet seat; the middle part of the outer surface of the ratchet head is provided with teeth; one end of the inner circle of the first pawl is provided with a ratchet teeth structure; the second pawl has the same structure with the first pawl; the end surface of the ratchet seat is eccentrically provided with a circle of annular groove, and one end of the annular groove is cut off, and arc-shaped barrier strips are oppositely arranged on a cutoff; installation seats are formed between the wall of the ratchet seat and the arc-shaped barrier strips; a reversing cover is clamped outside the ratchet seat.

A socket extension assembly adapted to be driven by a power tool is disclosed. The shell surrounds a connector and drive subassembly that are fixedly attached to one another and in axial alignment. A biasing member is interposed between the shell and subassembly to provide disengagement of the drive and shell in a natural state, and engagement and transmission of rotation when axial force is applied to mate the drive and shell. This enables a fastener to be loaded into the socket as usual and hand-started while the fastener is already loaded into the socket. After confirmation that the threads are properly and sufficiently aligned and engaged into the mating threads, the fastening process can be completed by applying axial pressure to transmit the rotational force from the power tool via the bit and the drive to the socket stem.

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 ratchet seat, a ratchet tool head, and a bidirectional ratchet hand tool are disclosed. A handle unit includes an annular groove and a cavity. A positioning ring is stretchably disposed in the annular groove. A first actuating unit and a second actuating unit are elastically placed one over another in the cavity. An outer peripheral surface of a ratchet seat forms a ratchet toothed portion and a positioning groove. The ratchet seat is movable between a first position and a second position in an up-down direction. When the first position is assumed, the positioning groove is slidably moved to engage with the positioning ring, and the first actuating unit meshes with the ratchet toothed portion. When the second position is assumed, the positioning groove disengages from the positioning ring, and the second actuating unit meshes with the ratchet toothed portion.