A fastener extractor tool is an apparatus that is used to remove a seized or damaged fastener. The apparatus may include at least one shank body and at least one torque-tool body. The at least one shank body allows the apparatus to be attached to an external torque tool. The torque-tool body engages the seized fastener to apply torque to dislodge said seized fastener. The at least one torque-tool body may include a plurality of laterally-bracing sidewalls and at least one engagement feature. The plurality of laterally-bracing sidewalls engage with the seized fastener to efficiently transfer torque from the external torque tool to the seized fastener. The at least one engagement feature is an engagement cavity that forms at least one engagement tooth on the at least one torque-tool body. The at least one engagement tooth engages the seized fastener to ensure torque is transferred to the seized fastener.

A socket assembly includes an outer socket, an inner socket mounted in the outer socket, and an intermediate socket mounted in the outer socket. The outer socket has a plurality of drive blocks and a plurality of retaining grooves. The inner socket includes a first base, a plurality of first driving sections, and a plurality of first openings. The intermediate socket includes a second base, a plurality of second driving sections, and a plurality of second openings. Thus, the inner diameter defined between the first driving sections is smaller than that defined between the second driving sections by 2 mm, and the inner diameter defined between the second driving sections is smaller than that defined between the drive blocks by 2 mm, so that the inner socket, the intermediate socket and the outer socket co-operate to operate three successive sizes of nuts.

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 hand tool includes a body provided with a mounting portion. The mounting portion includes six first recessed portions, six second recessed portions, and six locking faces. Each of the first recessed portions includes two grooves. Each of the second recessed portions includes two first arcuate faces and a second arcuate face. Each of the locking faces has a planar shape and is arranged between two of the second recessed portions. Each of the first recessed portions is arranged on one of the locking faces. The locking faces define an imaginary hexagonal portion having six sides coinciding with the locking faces respectively. The mounting portion of the body is mounted on a screw member. The screw member has six ribs received in the second recessed portions. Each of the ribs rests on one of the first arcuate faces.

A mechanism for reducing time-lost to tedious but necessary adjustments while using a chainsaw is disclosed, as well as methods of manufacture and use. An embodiment has a metal part fitting inside a plastic handle portion, where the two are sometimes assembled in two halves and then pressed molded or fastened together, in the form of a pull-handle positioned at the end of a starter-cord on a chainsaw. Another embodiment has the metal part containing a flat-blade screwdriver surface at one end, which matches and mates with some type of slotted adjustment fixture within the chainsaw; and where the other end has a socket wrench which matches up with an adjustment bolt within the chainsaw. Yet another embodiment has a dog-bone (socket) wrench fitting at one end, and a flat-blade at the other end.

A tool for torquing a regulator onto a cylinder of a portable cylinder assembly. The tool includes a nut and a socket. The nut is configured to fit around a body of a regulator of a portable cylinder assembly. As such, the nut has a first set of grooves that avoids one or more valve assemblies on the body of the regulator. The socket has a cavity extending therethrough such that the cavity consists of three sections: a top section, a middle section and a bottom section. The top section of the socket is configured to be coupled to a device that applies a torque force on the socket. The middle section of the socket is configured to avoid a case of the regulator which is disposed above the body of the regulator. The bottom section of the socket is configured to be coupled to the nut.

A wrench for rotating a hex head fastener has a frame having one or two jaw faces. If the frame has two faces, they form a 60 degree angle between them. A movable jaw has two faces forming an angle of about 120 degrees relative to each other. A guide connected to the frame controls movement of the movable jaw along a line forming an angle of about 40.9 degrees with respect to a position of one of the frame faces.

A one-way wrench having a catching device with two catches and a catch holder and having differential teeth is provided and characterized in that: the catching device is disposed in a catching chamber laterally disposed beside a driving hole of the one-way wrench; the catching device has two catches, two position-restoring elements, and a catch holder; the catch holder pushes the two catches simultaneously, such that a single stable base structure pushes the two catches simultaneously; and starting ends of tooth portions of the two catches are dentate to different extents, so as to effectuate a small transmission-oriented tooth-changing angle, achieve stable control, as well as cut production and maintenance costs.

A one-way wrench having a catching device with two catches and a catch holder and having differential teeth is provided and characterized in that: the catching device is disposed in a catching chamber laterally disposed beside a driving hole of the one-way wrench; the catching device has two catches, two position-restoring elements, and a catch holder; the catch holder pushes the two catches simultaneously, such that a single stable base structure pushes the two catches simultaneously; and starting ends of tooth portions of the two catches are dentate to different extents, so as to effectuate a small transmission-oriented tooth-changing angle, achieve stable control, as well as cut production and maintenance costs.

A hand tool includes a body provided with a mounting portion. The mounting portion includes six first recessed portions, six second recessed portions, and six locking faces. Each of the first recessed portions includes two grooves. Each of the second recessed portions includes two first arcuate faces and a second arcuate face. Each of the locking faces has a planar shape and is arranged between two of the second recessed portions. Each of the first recessed portions is arranged on one of the locking faces. The locking faces define an imaginary hexagonal portion having six sides coinciding with the locking faces respectively. The mounting portion of the body is mounted on a screw member. The screw member has six ribs received in the second recessed portions. Each of the ribs rests on one of the first arcuate faces.