A clench wrench includes a structure defining a first body defining a handle and a second body integrated with the first body and defining an engaging head respectively. The second body has two opposite sides with one side defining a front side and the other side defining a back side respectively and includes an engaging space. The engaging space extends through the front and back sides, and an opening is defined on both the front and back sides. One of the front and back sides includes a clenching member of a clenching device connected thereto. The clenching member is selectively movable between a first position blocking the opening of the engaging space adjacent to one of the front and back sides and a second position in which the opening of the engaging space adjacent to one of the front and back sides is not blocked.

A ratchet wrench having a flexible positioning structure includes a drive bar, a rotary head, and a locking button. The drive bar includes a fork arm, an axial hole, and a radial hole communicating with the axial hole. The rotary head is pivotally connected to the fork arm; the rotary head includes a round housing, a plurality of positioning recesses disposed on the round housing, and a pivot axis passing through the rotary head and two ends of the fork arm. The pivot axis is perpendicular to the radial hole. The locking button includes a flexible fastener inserted through the radial hole and a latch bar disposed in the axial hole. The flexible fastener is flexibly movable in association with movement of the latch bar, so that the latch bar is engaged with or released from any of the positioning recesses.

A quickly rotary and expandable ratchet wrench includes a drive bar, an operation handle, a rotary head, and an operation ring. The drive bar includes a bar body and a fork arm connected to the bar body. The bar body includes a plurality of retaining recesses spaced apart from each other and a groove passing through each of the retaining recesses. The operation handle includes a retaining element slidable to position in any of the retaining recesses and a restraint element protruding into the groove. The rotary head is pivotally connected to two ends of the fork arm. The operation ring sleeves on one end of the operation handle, and the retaining element is movable in association with movement of the operation ring to be positioned in any of the retaining recesses, and the operation ring is rotatable with respect to the drive bar.

A torque wrench includes a driving device having a connecting rod pivotably connected to a body. The connecting rod is pivotably connected to a head of the driving device and is pivotable between first and second positions. The torque wrench has first and second lever arms corresponding to the first and second positions, respectively. A torque device is mounted to the body and presses against an abutting end of the connecting rod. An adjusting device is movably mounted to the body and is operatively connected to the torque device for setting an initial torque value. A measuring unit measures the initial torque value. An operating unit multiplies the initial torque value by a first or second correction coefficient corresponding to the first or second lever arm to obtain a corrected torque value. A display unit displays the corrected torque value.

Expandable spinal implants, systems and methods are disclosed. An expandable spinal implant may include a first endplate, a second endplate, and a moving mechanism that is operably coupled to the first and second endplates. The moving mechanism may include a wedge, a first sliding frame and a second sliding frame disposed on opposite sides of the wedge, a screw guide housing a rotatable first set screw and a rotatable second set screw opposite the first set screw. The first set screw may be operably coupled to the second sliding frame and the second set screw may be operably coupled to the wedge. The moving mechanism may operably adjust a spacing between the first and second endplates upon simultaneous rotation of the first and second set screws and operably adjust an angle of inclination between the first and second endplates upon translating the first set screw or second set screw.

A ratchet wrench capable of rotating quickly and driving rotation includes a handle, a rotary head, a positioning mechanism, and a sleeve. The handle includes an arm and a bar body. The bar body includes an accommodating slot; the arm includes a through hole. The rotary head is connected to the arm and includes recess portions. The positioning mechanism includes a positioning element, a resilient body, and a block element. The resilient body receives the positioning element and is received in the through hole, the positioning element is correspondingly disposed in any of the recess portions, and the block element is connected to the positioning element. The sleeve receives the bar body and operably drives the block element to slide in the accommodating slot, so that the positioning element is positioned and selectively engaged with any recess portion.

A multi-function handle includes a connecting rod and a handle. The handle has an accommodation cavity therein. One end of the connecting rod is secured in the accommodation cavity from either of two ends of the handle, enabling the length of the connecting rod exposed out of the handle to be different. The present invention has a simple structure and an adjustable length, and is convenient for use.

A telescopic tool includes a positioning device mounted between first and second rods. The first rod includes a first positioning hole, and a first gripping portion. The second rod includes a plurality of second positioning holes, and is movable relative to the first rod to align the first positioning hole with one of the second positioning holes. A switch controller is movable relative to the first rod and is movably coupled to a positioning member. The positioning member movably extends through the first positioning hole and is releasably engaged in one of the second positioning holes in response to movement of the switch controller relative to the first rod. A fixing member includes a second gripping portion mounted around the first rod. A resilient biasing member is pivotally connected to the first rod and pressing against the positioning member.

A hand tool includes a handle and a driving head. The handle includes a first driving recess, a second driving recess disposed opposite to the first driving recess, a body made of a first material, and a cover member mounted around an outer surface of the body and made of a second material different from the first material. The handle further includes a first receiving recess therein. The driving head includes a connection portion alternatively engaged into one of the first driving recess and the second driving recess to provide a stationary connection between the handle and the driving head.

In some embodiments, a maintenance apparatus is provided for maintaining semiconductor processing equipment. The maintenance apparatus has an articulated member having a first member with a handle engagement portion and a second member with a first tool engagement portion. The first member is rotationally coupled to the first member about an articulation axis. A first tool member in selective engagement with the first tool engagement portion of the second member.