Abstract: An apparatus comprising an attachment and a grip device. The attachment may be configured to connect the apparatus to a rotational tool. The grip device may comprise a first surface and a second surface. The attachment may be located at a center of the first surface. The attachment may enable the rotational tool to spin the grip device in a spin direction about an axis. The second surface may extend from the first surface to form an arc shape along the axis. The second surface may provide friction. The spin direction may enable the arc shape to rotate a fastener using the friction in a direction opposite to the spin direction.

Abstract: This invention is directed to a filter removal tool comprising: a cup configured to engage with a filter so that rotating the cup rotates the filter; an opening in a shaft or cup and extending through the cup so that when a puncture cap that can be received into the cup punctures the filter, fluid flows from the filter out of the cup. The shaft can transition from a first position to a second position wherein the puncture cap can puncture the filter in the second position. A wrench or other tool can be used to remove the filter using the cup. The cup can be secured to the filter with a magnet or collet assembly. A tube can be connected to the cup to direct fluid that exits the filter. An impact member can be used to force the puncture cap into the filter.

Abstract: A rotary impact tool including a motor having a motor shaft that produces a rotational output to drive a gear assembly and a drive assembly driven by the gear assembly. The drive assembly including a hammer coupled to the motor shaft and an anvil configured to receive an impact from the hammer. The rotary impact tool includes a torque stick coupled to the anvil and configured to limit the amount of deliverable torque to a workpiece in accordance with a torsional stiffness of the torque stick, a position sensor to detect angular displacement of the anvil, and a controller in electrical communication with the position sensor. The controller calculates torque delivered to the workpiece from the impact by multiplying the torsional stiffness of the torque stick and the signal from the position sensor, and control the motor based on the torque delivered to the workpiece.

Abstract: The present invention provides a stud and tool to remove the same.

Abstract: A two-way nut spanner has a handle and an engaging head having a base, a first engaging portion and a second engaging portion. The base has a first abutting surface and a second abutting surface respectively located on two opposite sides of the base. The first engaging portion protrudes from the first abutting surface of the base and has multiple first engaging blocks. Each of the engaging blocks has a first inclined surface. The second engaging portion protrudes from the second abutting surface of the base and has a second engaging block having a second inclined surface. The engaging head has the first engaging portion and the second engaging portion with different engaging structures to enhance convenience for using the two-way nut spanner.

Abstract: A tool for locking/unlocking a torsional vibration damper screw to/from a crank shaft of an engine includes an elongated tool body having a first end and a second end. The first end of the tool body includes a pair of engagement pins sized and spaced for engaging a pair of apertures in the torsional vibration damper. The second end of the tool body includes an aperture for receiving a fastener for engaging the second end to a mounting location on the engine. A spacer element can be utilized for mounting the second end of the tool body to the engine mounting location.

Abstract: A puller spacer has a cylindrical and elongated body. The puller spacer has a slot formed in a side of the body. The slot extends from a center bore of the puller spacer to an exterior of the puller spacer. Wires that extend out of a steering column are routed through a bottom of the puller spacer and into a center bore of the puller spacer, with an end of each of the wires extending out of the slot formed in a side of the puller spacer. The puller spacer is positioned between a distal end of a center threaded member of a steering wheel puller and the top of the steering column. The steering wheel puller engages the steering wheel and the center threaded member of the steering wheel puller is advanced to pull the steering wheel away from the steering column.

Abstract: A method and apparatus for installing or uninstalling supply lines or retaining nuts. A wrench includes a body having first and second sections rotatably coupled to each other. The body includes a first portion having a plurality of castellations, wherein a plurality of radial slots are formed between lateral surfaces of adjacent castellations, each radial slot being engageable to a wing of a retaining nut, wherein the first portion includes a plurality of first inner surfaces engageable to a first pipe fitting in the closed position. The body includes a second portion spaced away from the first portion, the second portion including a hinge for rotating the first and second sections relative to each other. The body includes a third portion located between the first and second portions, the third portion including a plurality of second inner surfaces engageable to a second pipe fitting in the closed position.

Abstract: Apparatus, system and method for guiding a gripping tool into a structure to be gripped. In one aspect, the apparatus comprises a nubbin and a guide structure fixed to the nubbin. In a second aspect, the system comprises the apparatus and a target structure to be gripped by the gripping tool. In a third aspect, the method comprises coupling the nubbin to a target structure to be gripped by a gripping tool and moving a leading portion of the gripping tool through the apparatus and into the target structure.

Abstract: An apparatus for inserting and removing a mixer rotor pin includes at least one rotor pin with a transverse bore, as well as a rod dimensioned for slidably engaging the transverse bore. The apparatus also includes a mixer rotor pin insertion and removal tool having a tool body. A bottom of the tool has a slot for selectively engaging the aforementioned rod upon insertion of the rod into the transverse bore, and a top of the tool has a non-circular socket for accommodating a driver tool.

Abstract: A tool for use with a glad-hand connector; the tool includes a tool-body having a handle-end and a socket-end. The glad-hand connector includes a glad-hand body having a seal-side and a rear-side, and the socket-end includes an arcuate wall configured to encompass and conform to the rear-side of the glad-hand body. The tool is useful for facilitating coupling of glad hand connectors.

Abstract: A ceramic heater according to one aspect of the present invention has a cylindrical ceramic heater and an annular metal flange fitted around the ceramic heater. In the ceramic heater, one side of the flange with respect to an axial direction of the heater body is concave in the axial direction to define a concave part. The concave part includes a glass accumulation region filled with a glass material. The glass material in the glass accumulation is fused to the flange and to the heater body.

Abstract: Embodiments of the present disclosure relate to a terminal and a corresponding electrical component. The terminal comprises a U-shape connector comprising a first part and a second part opposite to each other, and a third part connecting the first part and the second part; a threaded terminal formed on a first surface of the first part and being integral with the first part; and an unthreaded terminal coupled to a second surface of the first part of the connector, the second surface being opposite to the first surface, and the unthreaded terminal being electrically coupled to the threaded terminal. According to embodiments of the present disclosure, actual needs of different customers can be satisfied and the reliability of the terminal can also be enhanced.

Abstract: A wheel cylinder adjuster includes a rotational disc, an axle, two guiding discs and two groups of claws. An oval slot extends in a first side of the rotational disc. A flower-shaped slot extends in a second side of the rotational disc. The axle is inserted in the axial aperture of the rotational disc. The first guiding disc is connected to the axle against the first side and includes two opposite radial slots. The second guiding disc is connected to the axle against the second side and includes three radial slots. Each claw in the first group is movably inserted in one of the slots of the first guiding disc and includes an insert movably inserted in the oval slot. Each claw in the second group is movably inserted in one of the slots of the second guiding disc and includes an insert movably inserted in the flower-shaped slot.

Abstract: A socket includes a hollow cylindrical body having a first closed end and a second open end, wherein the first closed end includes a receptacle configured to receive a ratchet; a first flat surface located on an inner surface of the hollow cylindrical body; and a second flat surface symmetrically opposed to the first flat surface and located on the inner surface of the hollow cylindrical body.

Abstract: A firearm sight adjustment tool is disclosed which is capable of interfacing with a firearm sight adjustment mechanism that includes a compressible pin, a rotatable wheel, and a protrusion projecting away from the wheel. The tool includes a first component having a grip on the top side and a shaft from the bottom side. The tool also has a second component with a tunnel to receive the shaft as well as a pin press protruding from the bottom of the second component. In use, the shaft is rotatable within the tunnel to apply torque to the protrusion while the pin press compresses the pin.

Abstract: A ratcheting spanner which can be installed on a rotatable body along a vector substantially perpendicular to an axis of rotation. The ratcheting spanner comprising a spanner body, a ratchet ring, and a plurality of pawls. The pawls can rotationally couple the spanner body to the ratchet ring in one or both directions relative to the axis of rotation. The ratcheting spanner can have a home key to facilitate the alignment of the openings in the spanner body and the ratchet ring. The direction of rotational coupling of the pawls and the action of the home key can be controlled by one or more selector controls. A driven ratcheting spanner can be constructed to further allow transmission of torque to the ratchet ring without movement of the spanner body. A method of using a ratcheting spanner to rotate a rotatable body.

Abstract: A special tool that can engage and manipulate a Jeep mounting screw commonly known as “Jeep Wrangler Hardtop Freedom Top Targa Mounting Knob Screw” Embodiments may include a handle that can contain indentations or ribs totally or partially extending its length for better grip. The handle abuts a flat head. A pair of screw engagement members are mounted on the flat head, separated, and spaced apart a pre-determined distance. The center region between the engagement members can be part of the flat head. Each engagement member is arc-shaped, or semi-circular in cross-section to fit into the knob screw head. The two engagement members are typically mounted in opposition and each extends approximately ? the circumference of the head. This arrangement allows perfect engagement with the Jeep mount screw.

Abstract: A bathtub drain and overflow fitting kit is provided having a drain fitting, an overflow fitting and/or an adapter fitting, for connecting the bathtub drain and overflow openings to the household waste plumbing. The overflow fitting has a ball and socket connection between its inlet and outlet. Preferably, the overflow fitting has an abutment member which limits the range of angles created by the joint socket and joint ball within a range of angles to about 10°. The kit includes a gasket having a first sealing portion, a second sealing portion, and a tapered sealing portion between the first and second sealing portions, and is configured so that the same gasket may be used at the drain opening or the overflow opening. The drain and overflow fittings have at their inlets retaining features that interengage matching retaining features on the gasket to hold during installation.

Abstract: A sprinkler head removal is disclosed. The sprinkler head remover comprises a tip portion having a width, a shaft having a first end and a second end; and, a handle having a first end and a second end. The tip portion releaseably connects to a sprinkler socket of a sprinkler head. The tip portion attaches to the first end of the shaft. The handle attaches to the second end of the shaft. The width of the tip portion varies according to an internal diameter of the sprinkler socket.

Abstract: A dryer for drying product includes a housing and a drying chamber formed in the housing. A series of doors are moveably mounted on the dryer for providing access to the drying chamber. A latch assembly is associated with each door for latching the door to the dryer. The latch assembly includes a bracket mounted to the door and a shaft rotatively mounted adjacent a portion of the bracket. The shaft includes a latch for engaging a latching catch and securing the door in the closed position. A locking member is pivotally mounted to the bracket and moveable between a locked and an unlocked position. In the locked position, the locking member extends into a locking cavity formed in the shaft.

Abstract: A shock absorber housing for a vehicle, which is provided in a vehicle body, encloses a shock absorber, and is coupled to the shock absorber so that the shock absorber is mounted in the vehicle body, may include a housing cap which covers an upper end of the shock absorber housing, and is coupled to an upper end of the shock absorber, wherein the housing cap includes a curved surface portion extending from the upper end and formed in a curved surface shape that is convex upward.

Abstract: 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.

Abstract: Flanges become stuck upon large pipes. This invention is a flange tightening tool in combination with a wrench, or other handled tool, having a fixed jaw integral with a handle and a movable jaw. The invention provides pins connected to each of the fixed jaw and the movable jaw. The pins extend mutually parallel and from the same side of both jaws. The pins generally have a round cylindrical shape with a diameter compatible to a flange aperture. The pins have a connection to the wrench utilizing a threaded tip that engages a cooperating threaded hole in each jaw. The pins are provided in various diameters, often in kit form. One pin may be longer than the other pins and both pins have left hand threading.

Abstract: Tools for removing connectors from ports in a network device, and related systems and methods. The tool is elongate with at least one prong at a distal end. The tool includes a very slight width relative to either its length or width, such that it can be inserted into a space adjacent a connector disposed in a port, such as between closely spaced adjacent connectors. The at least one prong is received in an anchor point, such as an opening, in the network device. Pivoting the tool applies a compressive force to a latch of the connector, disengaging the latch from its respective catch on the port, after which it can be removed by pulling it out of the port.

Abstract: A wrench is specifically configured for removing and installing toilet seats to toilet bowls, where a single wrench is adaptable to be used with a variety of different nuts commonly utilized to secure toilet seats to bowls. Each end of the wrench is configured to receive and engage a different variety of nut. Additional nut varieties may be received and engaged through the use of plug inserts which are received in each end of the wrench. The outer profiles of the plug inserts correspond to the internal profiles of each end of the wrench, while the internal profiles of the plug inserts are configured to receive and engage other sizes and forms of nuts. A method of use utilizes the wrench.

Abstract: A tool adapted to be used with a filter cap having an engagement structure includes a body having an upper end and a side wall extending from the upper end and terminating in a lower open end. The side wall is formed with a plurality of notches extending upwardly from the lower open end and adapted to receive the engagement structure of the filter cap. The notches define a set of spaced apart engaging members which form a driven head receiving structure adapted to matingly and non-rotatably receive the engagement structure of the filter cap. The body is engagably disposed over the engagement structure, and the body together with the filter cap is rotated in a clockwise or counterclockwise direction.

Abstract: A tool for removing lug nuts contains a supporting post including an actuating portion and two guiding portions extending outward from two sides of the actuating portion respectively; a screw rod including a head end and a circular extension extending outward from the head end, wherein an outer diameter of the head end is more than that of the circular extension, the circular extension includes a first and a second thread sections; two retaining arm, each including a hole to insert the guiding portion, an aperture arranged on a top end thereof to communicate with the hole, and an orifice secured thereon below the hexagonal hole and having a third and a fourth thread sections to screw with the first and the second thread sections respectively so that after the screw rod is rotated, the retaining arms are driven to close to each other or leave away from each other.

Abstract: A wheel bearing removal tool system comprising a dome structure, comprising a round bowl portion and a flat lip; a protrusion affixing the dome structure to a power drill, a plurality of recesses on the flat lip, a plurality of tool post, wherein the first post end comprises a complementary screw thread for screwing the tool posts into the plurality of recesses and affixing them to the flat lip.

Abstract: 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.

Abstract: A plunger installation tool that exerts a force on a plunger for a reciprocating pump to install the plunger into a pump cylinder opening. Maintenance of the pump typically includes repacking of the packing that surrounds the plunger and revalving of the pump's inlet and outlet valve. To allow repacking or revalving, the pump is disassembled and the plunger is removed. The plunger installation tool threads onto the pump cylinder opening to provide a reaction point for a threaded rod that is driven at one end by a driver and engages the plunger at an opposite end during installation to push the plunger into the cylinder opening without the use of hammers by personnel.

Abstract: The present invention relates to a tool for screwing a piston onto the piston rod of a hydraulic cylinder, in particular of a hydraulic cylinder with a piston diameter of more than 200 mm, comprising a first tool element with connecting elements for releasable connection with the piston and a second tool element with connecting elements for releasable connection with the piston rod, which is rotatable with respect to the first tool element, wherein the torque necessary for screwing together piston and piston rod can be applied onto the piston and the piston rod via the connecting elements by rotating the first tool element against the second tool element.

Abstract: A tool for loosening a rotatable, tightenable object having a gripping protrusion consists of a center beam, a handle with two stabilizers, and a rotary beam with two torque rods. The center beam is attached perpendicularly to the handle (at the center beam's upper end) and to the rotary beam (at the center beam's lower end). Stabilizers attached to the ends of the handle allow a better grip for applying torque. Torque rods attached to the ends of the rotary beam press on the sides of the gripping protrusion in order to produce a torque at the center of rotation when a person applies a rotary force on the handle. The tool is constructed out of a single-molded durable material and is used to loosen objects that are over-tightened due to external factors (e.g. heat, moisture, chemical exposure) and objects that are poorly accessible due to nearby external obstacles.

Abstract: A device which aids in the insertion and removal of tree steps within a tree, particularly during hunting, is herein disclosed, comprising an offset “L”-shaped crank with an upper end that has a hole which slips over the step portion of the tree step. An offset lower end of the crank comprises an outward facing rotating handle. To use the device, the user inserts a tree step into the tree using its pointed end, the device is slid over the step, and the step is cranked into the tree using the increased leverage provided by the device. Should the step need to be removed, the process is reversed by turning the device in a counter clockwise manner.

Abstract: A shower drain compression ring nut tightening tool includes two vertical legs for engagement into the grooves of the internal brass compression ring nut over the drain pipe inside the no-caulk shower drain body. The tool also includes a T handle connected to the body and legs to rotate the tool and tighten the ring nut in a no-caulk shower drain, even when the drain pipe is high or crooked.

Abstract: An adjustable flange wrench is disclosed for use with variously sized flanges. The adjustable flange wrench includes a first body, a second body and a pair of pins. The second body is rotatably attached to the first body about a rotational axis and is rotatable between first and second positions relative to the first body. Each pin is engaged with the first body and extends through the second body. When the second body is in the first position, the pair of pins are maximally separated and are aligned along a first line that intersects the rotational axis. When the second body is in the second position, the pair of pins are minimally separated and are aligned along a second line that intersects the rotational axis and is offset from the first line.

Abstract: A plumbing tool permits a drain body to be held in a drain opening of a bathtub from behind a drain end of the bathtub. The plumbing too has a head that can be engaged to the drain body and a handle that can be positioned so that an end of the handle projects through an overflow opening of the bathtub. The tool can prevent rotation and lifting of the drain body.

Abstract: An adjustable flange wrench is disclosed for use with variously sized flanges. The adjustable flange wrench includes a first body, a second body and a pair of pins. The second body is rotatably attached to the first body about a rotational axis and is rotatable between first and second positions relative to the first body. Each pin is engaged with the first body and extends through the second body. When the second body is in the first position, the pair of pins are maximally separated and are aligned along a first line that intersects the rotational axis. When the second body is in the second position, the pair of pins are minimally separated and are aligned along a second line that intersects the rotational axis and is offset from the first line.

Abstract: A socket (204, 600) is provided for use with a wrench (202) having a shaft (216) to drive the socket for tightening or loosening a fastener (206) having a gripping notch (218). The socket includes a main body (306, 610) and at least one removable driver (308, 310, 602, 604, 606, 608). The main body has a recess (214, 720) being of such dimensions that at least a portion of the fastener fills the recess when inserted therein. The main body further comprises a guide (402, 804) configured for aligning the socket and the fastener. The removable driver has at least one driving element (342, 344, 760, 762) sized and shaped to fit within the gripping notch of the fastener. The removable driver is removably disposed within the main body in an orientation in which a driving element at least partially protrudes into the recess.

Abstract: A pretensioning tool is provided for an eccentric tensioning device, which is used for tensioning a power-transmission element constructed, for example, as a flat or toothed belt in a power-transmission drive. The tensioning tool has an engagement structure that can be coupled so that it is locked in rotation with a working eccentric from a front region facing away from the flange side of the eccentric tensioning device and a decoupling structure for implementing an axial displacement of the working eccentric relative to the bearing journal. In this way, it is possible to turn back the working eccentric by hand and with moderate hand forces against the tensioning moment applied by the torsion spring of the tensioning device into a mounting position and to secure the working eccentric in this mounting position through axial decoupling of this eccentric relative to a base plate device.

Abstract: An adjustable flange wrench is disclosed for use with variously sized flanges. The adjustable flange wrench includes a first body, a second body and a pair of pins. The second body is rotatably attached to the first body about a rotational axis and is rotatable between first and second positions relative to the first body. Each pin is engaged with the first body and extends through the second body. When the second body is in the first position, the pair of pins are maximally separated and are aligned along a first line that intersects the rotational axis. When the second body is in the second position, the pair of pins are minimally separated and are aligned along a second line that intersects the rotational axis and is offset from the first line.

Abstract: A turbomachine has a stator and a rotor, wherein the rotor has blades (21) and the stator has a housing (20) and stationary guide vanes (17), wherein the guide vanes (17) form guide vane rings (11, 12) that adjoin the housing (20) with radially outwardly positioned ends (18) and adjoin the rotor with radially inwardly positioned ends. The guide vane rings are spoke-centered with the aid of bearing journals or guide pins (24) allocated to the housing (20) and penetrating through the housing (20). The guide pins (24) extend at a slant relative to the radial direction and the axial direction of the turbomachine, wherein the ends (26) of the guide pins (24) reaching into the housing engage in forked elements (27) allocated to the radially outer ends (18) of the guide vane rings (11, 12).

Abstract: A turning tool (5?) for turning a jet regulator, a nozzle, an intermediate holder, a flow regulator, a non-return valve or a similar plumbing fitting (5) is provided. The fitting (5), on the outlet side, is detachably held on a plumbing water outlet armature (2) by a threaded connection or a bayonet connection, whereby the turning tool (5?) can be placed on the plumbing fitting (5) in a rotationally fixed manner. The turning tool is characterized in that the turning tool is also provided in the form of a plumbing fitting or as a component of a plumbing fitting, that he turning tool (5?) can be placed in a rotationally fixed manner on an outer or an inner periphery of the fitting (5) that is held on the water outlet armature, and or that he turning tool (5?) has a face profiling or contouring (24, 25) that can be placed in a rotationally fixed manner on a mating profiling or a mating contouring (25, 24) provided on the outlet face of the fitting (5) that is held in the water outlet armature (2).

Abstract: A wrench that includes a handle and a tool head. The tool head is positionable in a plurality of positions relative to the handle. The wrench is useful in installing and repairing shower drains and sink drains and other similar drain arrangements.

Abstract: A tool for removing and installing a pop-up pool cleaning head assembly from a floor fitting is provided. The tool includes a removal head having a top portion with tapered pins or other protrusions that are adapted to engage with the pool cleaning head assembly and a receiver tube for receiving a first end of a substantially short stiff flexible connector, a rigid connector spaced apart from the removal head and having a first portion for receiving a second end of the substantially short stiff flexible connector and a second portion for fastening a pole-type member therein, and a pair of externally threaded tapering pipe plugs fit in the first and second ends of the flexible connector that cooperate with a plurality of bite ribs along an inner wall of the receiver tube and rigid connector first portion to substantially prevent rotation of the removal head.

Abstract: A mounting arrangement for coupling an oil line to an oil cooler includes an oil cooler defining a first fluid passage. A fluid line defines a second fluid passage. A nut having a central passage is adapted to threadably engage the oil cooler and provide a fluid-tight seal between the first fluid passage and the second fluid passage. The nut includes a perimeter defining at least two engagement surfaces. The engagement surfaces are adapted to be engaged only in a first direction.

Abstract: An apparatus for at least one of removing, repairing and replacing a toilet bowl seat comprising an elongated tubular type member having each of a predetermined configuration and a predetermined length. There is at least one pair of radially opposed wedge shaped slots formed in a sidewall portion of such elongated tubular type member adjacent a predetermined end thereof for engaging interchangeable caps with predetermined cavities to accommodate fastener nuts. Such slots having a predetermined length and a wedge shape which is wider adjacent the predetermined first end of such elongated tubular type member. At least one predetermined fitting is engageable at a second end of such elongated tubular type member and having a predetermined configuration for engaging nut heads.

Abstract: A ratchet type bending spanner comprises a handle; a holding portion at one end of the handle; a bending tubular portion at another end of the handle; an engaging unit having a part rotatable installed in the bending tubular portion; and the other part of the engaging unit being protruded from the bending tubular portion for engaging with a sleeve; the part in the bending tubular portion being formed with a ratchet portion which is engaged to a buckling block; and the buckling block being restorable elastically. A switch is installed in the bending tubular portion for controlling the shift of a position of the engaging block so as to form a bidirectional ratchet type bending spanner. The handle is a soft handle with a stop edge.

Abstract: The non-slip system consists of screw connection elements or screw closure elements with cams or grooves (4) on the face, and of a spanner (13), also provided with cams (16, 17, 18), for tightening and loosening them. The side flanks (8, 9) of the cams or grooves have an S-shaped profile.

Abstract: A toothless adjustable spanner includes a handle, a head at one end of the handle; a fixing jaw extending from the head; the head being formed with a sliding groove and a receiving groove in the head and communicated to the sliding groove; a sliding rod being received in the sliding groove and installed below a movable jaw; the movable jaw being installed in the sliding groove; the sliding rod has an inclined lower surface; at least one rolling rod being installed in the receiving groove; an elastic unit resisting against rolling rod toward the movable jaw so that the rolling rod resists against the inclined lower side of the sliding rod; at least one driving sheet installed at one outer side of an opening of the receiving groove; and the sliding rod being installed to the driving sheets so that the sliding rod moves as the driving sheets move.