583results about "Portable handheld shearing machines" patented technology

A pair of metal shears has two blades, two handles, a tag and a locking lever. The blades are pivotally connected to each other with a first pivot pin. The handles are pivotally connected to each other with a second pivot pin. Each handle is pivotally connected to one of the blade with a third pivot pin. The tag is attached to one of the handles to show information of the pair of metal shears. The locking lever is pivotally attached to one of the handles to engage with the other handle. With such an attached tag, the information or instructions about the metal shears can be clearly shown on the tag.

The present invention relates to a control method for motor-driven shears. The control method for the motor-driven shears of the present invention requires that both the power supply module and the control system used to drive the motor be active simultaneously for the shears to operate. The power supply module requires a switch be pressed to activate the power supply module and to provide the resultant power to the MCU. Further, upon releasing the switch, the MCU is be able to maintain the power supply module in a discharging state long enough to allow the control system controlling the motor to rotate the movable blade to an open position. Finally, when the movable blade is opened to a maximum position, the MCU may direct the motor to stop rotation and shut off the power supply module.

A reciprocal-movement power tool includes a movable blade reciprocally movably provided on a main body. A receiving plate that supports an angle iron to be cut is supported on the main body at a position in front of the movable blade. The movable blade is fixed on a front tip of a rod-shaped shuttle screw. The shuttle screw moves back and forth in the axial direction within a tubular screw shaft. The screw shaft is carved with a female screw portion and is rotated through a joint spindle that is deceleratingly rotated upon rotation of the motor through a deceleration means. The shuttle screw has a male screw portion that is threadingly engageable with the female screw portion.

Portable electromechanical tool comprising a unit (2) enclosing a continuous current electric motor (23) powered by a storage battery (4), a mechanical reduction gear (25) driven by the output shaft of said motor, which activates a working head (3) by means of a device (40) for converting the rotary motion of the motor (23) into a longitudinal translation movement, which is transmitted to said working head (3). According to the invention, said converting device (40) comprises a planetary roller screw, said screw comprising a threaded part (41), which is driven in rotation by said reduction gear to transmit motion via planetary rollers (43) to a threaded nut (42) that drives a mobile part (5) of said working head (3) in translation.

A hydraulic rescue tool (10) with a quick-change head (26) that incorporates a cylinder (20) having a piston rod (22) and a forward end structure (24). The forward end structure (24) has a separable head and a cylinder attaching bifurcated yoke (28). A pair of yoke quick release pins (48) jointly engage the head (26) and the bifurcated yoke (28) thus, creating an attachment therebetween. A pair of cutting blades (50) are connected to the head (26), and links (54) connect to the piston rod on a first end and to the cutting blades (50) on a second end, thereby forcing the cutting blades from an open position to a closed position by movement of the piston rod (22). A pair of link quick release pins (60) engage the links (54), creating an attachment therebetween, permitting the links to be released by manually disengaging the quick release pins, thereby allowing the head, including the cutting blades, to be rapidly removed or repaired.

A hydraulic tool is provided with a spool valve 24 for changing the flow of a working fluid pressurized by a hydraulic power generating mechanism in a hydraulic circuit. The spool valve 24 is slidable in directions perpendicular to a piston rod 18. A cylindrical grip handle 34 to be operated by the operator's hand is extended parallel to the piston rod 18 on the outer surface of the main casing 5 so as to be turnable about its own axis. The spool valve 24 and the grip handle 34 are interlocked by a cam mechanism including members 29, 30 and 21. The spool valve 24 is moved axially by turning the grip handle 34 to control the flow direction of the working fluid.

An electric cutting device includes a housing, a motor, an activation button, a first assembly, a second assembly, two connecting rods, two connecting rods and a cutting assembly. The activation button may be used to activate the motor. The motor is connected with a speed reduction gear set, and a transmission gear is connected with the output shaft of the speed reduction gear set. The transmission gear is engaged with a driving gear. A threaded rod is fixedly connected with the driving gear. The two supporting rods are pivotally connected with the first assembly. The rear end of either connecting rod is connected with the front end of the corresponding supporting rod. In use, the motor may cause the threaded rod to rotate and then activate the cutting operation of the cutting assembly.

A cable cutter for attachment to a power drill has a housing, first and second cutting blades connected to the housing for movement relative to one another and a drive assembly releasably engageable with the chuck of the drill and operatively engaged with at least one of the cutting blades. The drive assembly includes a worm mounted on a drive shaft, a worm gear and a drive gear mounted on a main shaft, and a segment gear formed on one of the cutting blades. The worm and worm gear which are in engagement, as are the drive gear and segment gear. The main shaft is supported in the housing by three bearings. A torque arm is attached at one end to the housing and adapted at its other end to engage the handle of the drill. A reversible stabilizing handle attaches to the housing to allow the user to securely grip the housing during cutting operations.

A cable cutting tool with high hardness insert blades inserted between pivotably mounted levers. The levers are pivotably mounted to hand-grippable handles. The levers have jaws with a gap formed between inner facing surfaces thereof. The gap provides space for insertion of the insert blades.

The present invention relates to a tool for shaping a workpiece. The tool has two pivotally connected arms that are stroked between open and closed positions. Each arm has a handle, an intermediate coupling portion and a working portion. One working portion has a cutting block with a face and two sidewalls that form a pair of spaced apart cutting edges. The other working portion has a pair of spaced apart ramp or wedge shaped blades with cutting edges that are aligned to shearingly engage the cutting edges of the cutting block. The tool is stroked to its open position to align the cutting block with the workpiece. The tool is then stroked to its closed position to form a pair of opposed flaps in the workpiece. The flaps form a slot having a desired width. The tool preferably includes a depth adjustment mechanism for selectively setting the tool to open to a desired intermediate position so that when the tool is aligned with the workpiece it will cut the workpiece to a desired depth.

The present invention relates to a protective spool dispenser that is portable, efficient and convenient for dispensing line. The dispenser has four corner members and upper and lower sidebars, forming a box-like outer frame. A crossbar extends between two adjacent corner members. A spool-receiving arm extends from the crossbar. The end of the spool-receiving arm opposite the crossbar is unsecured, so that a spool of line may be easily slid onto the arm. The arm includes a tensioning spring, two washers and a fastening pin. The spool is sandwiched between the two washers. Free spinning is prevented due to the tensioning spring. The disclosed dispenser also preferably includes a cutter mechanism for cutting line to desired lengths.

Two-stage force multiplier tin snips are provided which have a pair of cutting blades and associated tangs, both being pivotable about a cutting axis. Each respective tang is coupled to a pair of handles by a pair of respective tang pins. The handles are pivotably attached to one another about an adjustable handle axis. The handle axis is adjustable between an upper position and a lower position to provide a mechanism for changing a force multiplier of the cutting blades. The handle axis may be a sliding axis disposed in longitudinal slots on the handles. The handle axis may also be upper and lower fixed pins that are slidable in lateral slots.

A comfortable and easy-to-use tool and of the type having a hollow shaft (10), housing a hydraulic system comprising of a spring (22), a toothed piston rod (30), a sealing bolt (28), an intake tuyere (32), and a pressure release valve (12). That in conjunction with the jaw's 14L and 14AR, facilitate the tightening and loosening of bolts, screws, nuts, etc. . . . And to finalize, the cutting of pipes and certain objects. In addition, an air comfort handgrip handle (54) with the use of the air comfort hand grip (56) adds continuous comfort while using the tool. An extendable neck comprising of a system with an extension push button (42), an extension push button fastening screw (42A) and a curved flat spring (44) supply a means for application of more torque.

A handling system with an improved fairlead is provided for protecting a tow cable wherein the cable breaking strength exceeds the system-rated tension load; the fairlead being positioned collinearly between the system bellmouth and winch. A guide slot passes through the fairlead positioning the cable higher than the winch release point and bellmouth entry point, maintaining the cable down-slope as the cable exits the fairlead. The slot has a hemispherical portion tapering inward to a groove extending downward. Near the groove bottom, at the fairlead end nearest the bellmouth, is a cutting device. Under tension, the cable rides in the hemispherical portion of the groove. If tension suddenly increases from a snag, the resulting force drives the cable down into the groove where the cable is cut by the device, separating before the force damages the system. The constrained cable end is securely held in place by the taper.

A compound leverage hand tool with an interchangeable tool head. The tool includes a pair of pivotably interconnected handles and a tool head defined by a pair of pivotably interconnected blade members. Each blade member terminates at one end in a mounting dowel that is pivotably mounted in a pair of retention slots in one of the handles. Tool head latches are pivotably mounted to the handles and include locking fingers that extend over the retention slots. The tool head latches can be pivoted relative to the handles between a locked position, wherein the locking fingers prevent the mounting dowels from being removed from the handles, and an unlocked position, wherein the mounting dowels can be removed from the handles. A spring biases the tool head latches toward the locked position. To unlock the tool head latches and remove the tool head, a user engages a tool head latch and pulls the handles apart.

A punching tool for forming an attachment in a side-lapped seam of steel decking includes four cutting jaws each having a cutting edge. Two jaws are positioned against one side of the seam, and two jaws are positioned on the opposite side of the seam. An actuator selectively pivots the cutting edges of opposing jaws generally toward each other to a closed position, driving the cutting edges of a first pair of jaws partially past each other for cutting a first slot through the seam, and driving the cutting edges of a second pair of jaws partially past each other for cutting a second slot through the seam. Also disclosed are a method for forming such an attachment, as well as the attachment structure which results therefrom.

Cutting shears having a pair of handles pivotally connected as levers to a lower pivot and pivotally connected in a compound linkage arrangement to a pair of intersecting cutting blades at an upper pivot. A hand grip on each of the handles includes an outwardly projecting upper hand grip tab and the distance from the upper pivot to a hand contacting surface of each upper hand grip tab is substantially in the range from 2½″ to 3¼″ and preferably substantially 2¾″. The distance from the locus of intersections of the blades as they pivot through a cutting motion to the plane of the most distal tips of the handles is substantially within range from 6¾″ to 7¼″ and preferably 7″. The hand grips are substantially identically, arcuately, outwardly, oppositely contoured and longitudinally symmetrical. Each hand grip also has an outwardly projecting lower hand grip tab and the hand contacting surfaces of the upper and lower tabs on each hand grip are spaced apart a distance substantially 4½″ although they may be substantially within the range of 4¼″ to 4¾″. The tabs protrude outwardly from an intermediate portion of the hand grips preferably by ½″.

A power shear tool includes a housing portion, a motor positioned within the housing portion, and a tool head portion extending from the housing portion and including a blade rotatable relative to the tool head portion. The power shear tool includes a workpiece support member positioned proximate the tool head portion. The workpiece support member includes a top surface and a bottom surface opposite the top surface, side surfaces extending between the top and the bottom surfaces, a first channel defined in the top surface and extending from at least one of the side surfaces, and a second channel defined in the top surface. The second channel intersects the first channel and extends transverse to the first channel.

An attachment apparatus for a reciprocating tool provides a tool holder having an angled bracket and a guide rod extending from the angled bracket. The guide rod can engage a travel slot on the reciprocating tool. An instrument such as a saw blade can be attached to the angled bracket or guide rod. The guide rod stabilizes the instrument during use. The travel slot can be defined integrally on the reciprocating tool or on an attachment to the tool. In some embodiments, a neck mount assembly is attached to the neck on the reciprocating tool. The neck mount assembly can include a frame and a guide plate. The guide plate can include a travel slot shaped for receiving the guide rod.

An electric cutting device includes a housing, a motor, an activation button, a first assembly, a second assembly, two connecting rods, two connecting rods and a cutting assembly. The activation button may be used to activate the motor. The motor is connected with a speed reduction gear set, and a transmission gear is connected with the output shaft of the speed reduction gear set. The transmission gear is engaged with a driving gear. A threaded rod is fixedly connected with the driving gear. The two supporting rods are pivotally connected with the first assembly. The rear end of either connecting rod is connected with the front end of the corresponding supporting rod. In use, the motor may cause the threaded rod to rotate and then activate the cutting operation of the cutting assembly.

A hand tool with a mechanical linear drive mechanism coupled to a linear activated working implement. The drive mechanism includes a geared planetary roller screw that includes a torque tube connected to a roller screw's nut body. The planetary roller screw includes a fixed outer race, a rotating set of grooved rollers axially aligned inside the outer race, a cylindrical nut body located inside the set of grooved roller, a plurality of inner rollers axially aligned and inside the nut body, a threaded shaft axially aligned and inside the inner rollers, and a torque tube axially aligned inside the inner rollers. The torque tube is connected at one end to a gear box which is coupled to an electric motor. When the electric motor is activated, the torque tube is rotated which causes a threaded shaft in the tool to move axially. A working implement is coupled to the distal end of the threaded shaft.

A compound leverage hand tool with an interchangeable tool head. The tool includes a pair of pivotably interconnected handles and a tool head defined by a pair of pivotably interconnected blade members. Each blade member terminates at one end in a mounting dowel that is pivotably mounted in a pair of retention slots in one of the handles. Tool head latches are pivotably mounted to the handles and include locking fingers that extend over the retention slots. The tool head latches can be pivoted relative to the handles between a locked position, wherein the locking fingers prevent the mounting dowels from being removed from the handles, and an unlocked position, wherein the mounting dowels can be removed from the handles. A spring biases the tool head latches toward the locked position. To unlock the tool head latches and remove the tool head, a user engages a tool head latch and pulls the handles apart.

An electro-hydraulic pump for hydrodynamic compression tools which comprises a pump housing carrying an electric motor and a hydrodynamic group for pressurizing a hydraulic liquid, a control circuit for controlling the electric motor, a flexible pressure hose connected to the hydrodynamic group, and a work head of the tool to communicate the hydraulic liquid pressure to the work head. A flexible control cable connects the control circuit in the pump housing to a hand held remote control. The hand held remote control comprises an actuating button for starting the electric motor and a button for selecting an operation mode of the electro-hydraulic pump from a plurality of pre-set operation modes, as well as a multifunction display which shows the selected operation mode.

A rod cutter apparatus includes a rod holding plate having a rod opening for receiving a rod to be cut; a cutting member having a central opening defined by a cutting edge, the central opening being substantially aligned with the rod opening; and a drive assembly connected between the rod holding plate and the cutting member to cause oscillation of the cutting member relative to the rod holding plate, wherein oscillation of the cutting member relative to the rod holding plate cuts a rod in the rod opening.

A drill cutting attachment for severing an electrical conductor includes a housing, a stationary cutting blade connected with the housing, a movable cutting blade pivotally connected with the stationary cutting blade for displacement about a given cutting pivot axis between open and closed positions relative to the stationary cutting blade, and a pawl and ratchet arrangement for displacing the movable cutting blade from the open position toward the closed position, thereby to sever an electrical conductor positioned between the blades. The pawl and ratchet arrangement includes a transport pawl member that is longitudinally reciprocated by a rotary drive shaft via either an eccentric and crank arm drive arrangement, or a cam and follower drive arrangement. The drive shaft has a free end with a hexagonal cross-sectional configuration for connection with the chuck of an electric drill, and an attachment sleeve connects the housing with the electric drill body.

A hydraulic tool has a motor, a valve, a hydraulic intensifier and a supply connector. The hydraulic intensifier is arranged between the valve and the motor. The valve and the motor are arranged behind one another in a longitudinal direction of the tool. The hydraulic intensifier has at least one intensifier piston having a movement direction that is positioned at a first angle greater than 0° relative to the longitudinal direction of the tool.