Abstract: Provided are a screw (11) which can significantly reduce the cam-out if a dedicated driver bit is (14) used, and which also allows the use of a driver (6) bit for a standard cross recess and can reduce the cam-out to some extent, and a dedicated driver bit (14) for such a screw (11). Of a recess (13), a central portion (17) and proximal end side portions (18a) of blade engaging portions (18) are configured in the same manner as in a standard cross recess. The tightening side sidewall (20) or the loosening side sidewall (21) in the distal end side portions (18b) of blade engaging portions (18) are bent at an oblique angle. A dedicated driver bit has a corresponding cross-sectional configuration to that of the recess (13). Because the dedicated driver bit is hard to tilt relative to the screw (11) and the engagement between the blades (19) of the driver bit (14) and the blade engaging portions (18) is improved, the cam-out becomes hard to occur.

Abstract: A screwdriver comprises a shaft, and a handle core, a handle body and an outer layer formed on the shaft by injection molding. The multilayer structure of the screwdriver prevents the impact force from being transmitted to the user's hand and causing discomfort, and can relieve the discomfort caused by the impact force applied to the screwdriver while reducing the impact force loss during impact operation.

Abstract: A screwdriver is convenient for changing various heads. The heads can be easily detached from the screwdriver, and mounted to the screwdriver.

Abstract: A hand tool impacting device may include, a drive shaft with an aperture, an impaler disk, and a floating pin positioned within the aperture of the drive shaft. A set of circular ramps on the outer edge of the impaler disk may interact with a stationary pin insert to translate the drive shaft and create an impacting motion. A pair of springs placed against either side of the floating pin may allow a specialized tool bit to engage or disengage the impaler disk, thereby allowing selective use of translational impacting motion, or rotational torque. An impact bit for engaging the impaler disk may include, a tool head configured to engage a work piece and a tool shaft configured to be inserted into a hollow drive shaft to engage a floating pin. According to one embodiment, the impact bit includes a number of sleeves to guide the tool head during operation.

Abstract: An article for use in a torque transmitting system which has a drive surface configuration having side and end surfaces is disclosed. The end surface tapers upwardly and outwardly from a lowermost point provided along a longitudinal axis to the side surface. The end surface defines a plurality of identically configured lobes that extend from a first point to a second point. The first point of one lobe is identical to the second point of an adjacent lobe. The first and second points of each lobe are provided along an imaginary circle having its center along the longitudinal axis. Each lobe extends from the first point to the second point by a series of edges that are straight, concave and/or convex. Two of the edges are tangential to the imaginary circle. The side surface extends upwardly from the edges defining the plurality of lobes.

Abstract: A rotary tool includes a tool body having a driving end formed thereon and an annular groove defined therein. An indicating coiled spring is received in the annular groove. The indicating coiled spring has a colored indicating mark formed thereon for easily identifying a standard of the rotary tool. The indicating coiled spring is made of metal, wherein the indicating coiled spring is hard to be broken and a lifetime of the indicating coiled spring is lengthened. The indicating coiled spring is able to elastically expand to be easily and co-axially sleeved on the annular groove of the tool body, such that the indicating coiled spring being replaceable and re-useable. When operating, the indicating coiled spring is rotatable relative to the tool body.

Abstract: A fastener system is constructed wherein the installation and removal drive surfaces intersect an enlarged core diameter in a transitional surface that extends between the installation and removal surfaces of adjacent wings. The transitional surface has a concave form that conforms to the core diameter. The projections of the driver in the system are formed in a blunt shape.

Abstract: A fastener turning tool has a handle with an extending shaft and a protective collar. A working end of the shaft is provided with a tip that is configured to engage a fastener. A longitudinally extending slot is formed in the shaft between the handle and the tip. The protective collar is slidably received on the extending shaft. A guide member fixed to said collar is slidably received in the longitudinally extending slot and constrains the collar for limited sliding on the shaft. A compression spring is held on the shaft between the collar and the handle. The spring is normally expanded and holds the collar down beyond the tool tip. When the collar is compressed, position, the tool tip is exposed for engagement with the fastener.

Abstract: A device for captivating a variety of fasteners relative to a first member. A captivator includes a body adapted to be secured to the first member and a retainer received within the body and having a surface engaging a captured fastener. Together the body and retainer maintain the captivated fastener in place relative to the first member. Keyway surfaces are provided upon the body or retainer or both and an external or internal key engages the keyway surfaces to selectively lock the body and retainer together, such as during installation or replacement of the captured fastener. Upon removal of the key, the retainer is free to rotate and translate relative to the body.

Abstract: The invention relates to hand tools and to threaded fasteners, and comprises a screw and corresponding screwdriver. The screw comprises a head and a threaded working end. The head slot for inserting the screwdriver is made in the form of a “dove tail.” The working section of the screwdriver for screwing and unscrewing the screw is made as a mirror image of the screw head slot, with the same angle of slope. The invention lengthens the life of screwdrivers and screws and their serviceability.

Abstract: An apparatus for removal of retentive mechanisms retaining a cover of a component device. The apparatus includes a structure. The apparatus also includes a component device positioner coupled to the structure. The apparatus additionally includes a plurality of retentive mechanism removers coupled with the structure. Each of the plurality of retentive mechanism removers are configured for interoperability with each retention mechanism retaining a cover of a component device having a plurality of retention mechanisms disposed therein. The apparatus further includes a drive mechanism that is coupled with the structure. The drive mechanism is for rotation of each of the plurality of retentive mechanism removers, causing removal of each retention mechanism retaining the cover of the component device.

Abstract: A screwdriver bit structure sequentially comprises a connection section, a neck reducing section and a driving section. A plurality of arc grooves is circularly disposed to a front of the driving section to form an operating end capable of embedding with a locking member. An effective working section is disposed to a front of the operating end, the characterized in that a reinforcement section is preset between an end of each arc groove of the driving section and a relative bottom edge of the driving section. An external diameter of a maximum cross-section of the effective working section is greater than a length of the neck reducing section. An external diameter of the neck reducing section is greater than or equal to a length of the working section. An upper tapering transition is disposed between the neck reducing section and the driving section.

Abstract: A hexagonal wrench has a head. The head has an end surface, six equal side surfaces and at least one groove. Each side surface has a left edge segment and a right edge segment adjacent to the left edge segment of an adjacent side surface. The at least one groove is formed in at least one of the right edge segments and the left edge segments and extends to the end surface. Therefore, the head can engage securely an inner surface of a socket to rotate the socket even when the socket is worn or rounded.

Abstract: A screwdriver comprises a shaft, and a handle core, a handle body and an outer layer formed on the shaft by injection molding. The multilayer structure of the screwdriver prevents the impact force from being transmitted to the user's hand and causing discomfort, and can relieve the discomfort caused by the impact force applied to the screwdriver while reducing the impact force loss during impact operation.

Abstract: A tight-spot fitting includes an elongated body configured to be inserted into and extracted from an aperture of a device, a user-operable head configured to be manipulated by a user to rotate the elongated body with respect to the aperture of the device, a depression in the user-operable head dimensioned and configured to receive a corresponding driver, and a through-bore extending through the elongated body and the user-operable head into the depression. The through-bore is configured and dimensioned to receive a line therethrough such that when the elongated body portion is inserted into the aperture, the line spans the aperture and through-bore, and extends through the depression.

Abstract: A torque-limiting fastener driver for driving a bone fastener into bone includes a handle supporting a driver shaft. The driver shaft includes limited components which are designed to provide feedback to a user regarding the applied torsional force. In addition, the driver shaft is designed to controllably fail before any potential uncontrolled failure of the distal driving tip. This prevents application of too much torque and controlled design of the shape and size of the failed components.

Abstract: In various novel embodiments thereof, the inventive hand held active element instrument (such as a writing instrument) is readily operable by a qualified user, to be secured in such a manner as to minimize any risk of harm therefrom to a child who gains possession thereof, and subjects the instrument to physical manipulation, by preferably providing at least one two- or greater step securing component, that must be operated through the applicable number of provided steps, by a qualified user, in order to secure and unsecure the instrument's at least one active element.

Abstract: A tool bit includes a hexagonal drive portion, a working end, and a shank interconnecting the drive portion and the working end. The shank includes an outer peripheral surface having a curvature in a plane including a central axis of the tool bit. The outer peripheral surface having the curvature includes a length in the direction of the central axis. A ratio of the length of the outer peripheral surface having the curvature to the length of the tool bit is between about 0.2:1 and about 0.7:1.

Abstract: With a structure capable of idly rotating a main body which is lower than a handle even when fixing the handle in a palm of a hand, a screwdriver can be retained by pushing the handle and rotated at the same time. Therefore, a finger force for retaining the screwdriver is not necessary. The screwdriver can be rotated by one hand. Since a clip chuck for setting the screwdriver is formed in an impeller shape, fingers can be suspended for rotation. Since the rotation can be performed not by grasping but using muscles of the entire hand, fatigue of the muscles can be reduced.

Abstract: The present disclosure is directed to devices, systems, and methods directed to mounting a plunger tip to a plunger of an IOL injection device. A plunger tip wrench that is operable to releasably retain a plunger tip may be coupled to a holder extending from an end of the IOL injection device to align the plunger tip with the plunger of the IOL injection device. In some instances, the IOL injection device may include a motor and use a back electromotive force (EMF) of the motor to detect a position of the plunger as it is extended to engage the plunger tip. The plunger tip may be positioned relative to the plunger such that the plunger will engage the plunger tip within the entire range of a negative error position and a positive error position.

Abstract: A hex wrench includes a handle (21) and a head (22) connected with the handle. The handle has a surface provided with a first twist portion (212) which has an axis that is not parallel with the axis of the handle, and the head has a surface provided with a second twist portion (222) which has an axis that is not parallel with the axis of the head. Preferably, each of the first twist portion and the second twist portion has a helical profile to conform to the torsional shear stress applied by the hex hole screw during operation of the hex wrench so that the hex wrench has greater strength and stiffness without reducing its malleability so as to prevent the hex wrench from being cracked or broken due to an excessive applying force.

Abstract: A surgical tool includes a proximal end, a distal end and a longitudinal axis extending from the proximal end to the distal end. The surgical tool has a fastener engagement tip having a spring extension extending substantially parallel to the longitudinal axis of the surgical tool. The spring extension is resiliently flexible and deflectable between a first arrangement, in which the spring extension is in a relaxed state, and a second arrangement, in which the spring extension is deflected to facilitate insertion of the fastener engagement tip into a fastener slot.

Abstract: A screwdriver includes a first body having an end for coupling with a handle, a second body rotatably coupled to the other end of the first body, two pairs of engaging members, and a switch member pivotably mounted to the first body. Each pair of engaging members is slidably received in an associated transverse receiving section that includes two end openings in an outer circumference of the first body. Each engaging member includes a first end with an engaging portion. An elastic element is mounted between second ends of each pair of engaging members for biasing the pair of engaging members away from each other. The switch member is pivotable to selectively engage at least one of the engaging portions of each pair of engaging members with teeth of the second body, thereby controlling relative rotation between the first body and the second body.

Abstract: A fastener system is constructed wherein the installation and removal drive surfaces intersect an enlarged core diameter in a transitional surface that extends between the installation and removal surfaces of adjacent wings. The transitional surface has a concave form that conforms to the core diameter. The projections of the driver in the system are formed in a blunt shape.

Abstract: A tool holder for use with a power tool includes an input shaft, an output shaft, and a clutch assembly. The input shaft has a rear portion with a shank configured to be removably coupled to a power tool, and a front portion. The output shaft has a front portion configured to be coupled to a tool bit, and a rear portion, the rear portion of the output shaft rotatably coupled to the front portion of the input shaft.

Abstract: An insulating screwdriver includes a handle, a drive shank having a first end mounted in the handle and a second end protruding outwardly from the handle, an insulating jacket mounted on the second end of the drive shank, and an identification insulating sleeve mounted between the second end of the drive shank and the insulating jacket. Thus, when the insulating jacket is worn out or broken due to friction or hit, the identification insulating sleeve is still located outside of the drive shank to provide a secondary insulating effect to the drive shank so as to protect the user when operating the drive shank.

Abstract: A screwdriver includes a locking member, a positioning member, a retaining member, and a rotatable member. The locking member defines a locking member hole therein. The positioning member is received in the locking member hole, and defines first and second positioning member holes. An angled surface is located between the first and second positioning member holes. The retaining member secures the positioning member to the locking member, and defines a retaining member hole to receive the positioning member. The rotatable member is received in the first positioning member hole, and slidable to abut the angled surface to slide the positioning member from a first position where the rotatable member is positioned in the first positioning member hole, to a second position where the rotatable member is positioned in the second positioning member hole so as to splay the second positioning member hole.

Abstract: A single-bit screwdriver comprising: a housing; a shaft slideably mounted in the housing; the shaft having a locking portion, and the housing having at least two locking mechanism, wherein each locking mechanism engages the locking portion to prevent sliding of the shaft relative to the housing.

Abstract: The present invention provides a screwdriver bit set with identification functions. Each bit body in the set has an insertion end, an actuating end and a neck portion. An aluminum alloy identification ring includes a trepan boring for assembly onto the neck portion of the bit body. The aluminum alloy identification ring also has an outer ring surface protruding from the neck portion of the bit body. An anodized protective film is formed on the surface of the aluminum alloy identification ring. The protective film presents bright color and a corrosion-resistant property, helping to prevent discoloring and provide durable identification effects with improved applicability.

Abstract: A torque-limiting fastener driver for driving a bone fastener into bone includes a handle supporting a driver shaft. The driver shaft includes limited components which are designed to provide feedback to a user regarding the applied torsional force. In addition, the driver shaft is designed to controllably fail before any potential uncontrolled failure of the distal driving tip. This prevents application of too much torque and controlled design of the shape and size of the failed components.

Abstract: A clamping system with a clamping nut and a wrench for tightening the clamping nut, wherein the clamping nut includes at least one recess on either the outside edge or the inside edge of the end face of the clamping nut to receive projections of the wrench. The edge opposite the edge with at least one recess is closed. The at least one recess is provided with at least one undercut, which the projections of the wrench can grip from underneath.

Abstract: A driver tool configured to engage and drive the head of a threaded fastener includes a shank defining a longitudinal axis. The shank has a mating end and a driver end. A driver head is coupled to the shank adjacent the driver end. The driver head includes a first driving portion having a substantially square cross section normal to the axis and a geometric center along the axis. The first driving portion includes four walls and a corner at an intersection of adjacent walls such that the first driving portion includes a first corner, a second corner, a third corner opposite the first corner, and a fourth corner opposite the second corner. The driver head further includes a second driving portion including a first flange extending radially outward from the first driving portion and a second flange extending radially outward from the first driving portion. The second flange is opposite the first flange, and each of the flanges includes an end wall having a midpoint.

Abstract: A screwdriver is provided herein, comprising a handle portion (11) and a shaft portion (12), with a distal end attached to said handle portion (11) and a proximal end attached to a tip portion (13) for driving a screw member with rotation transmitted from said handle portion (11). The tip portion of the screwdriver has a substantially rounded cross-section in an axial plane, and a substantially polygonal shaped cross-section in a radial plane with at least a first and a second diagonal, extending perpendicularly to two opposite sides of the polygonal, respectively, wherein said first diagonal is greater than said second diagonal. Also, a screw member, adapted for said screwdriver, is provided.

Abstract: In accordance with one aspect of the present invention, a combination ratcheting and helical driver is disclosed. In the unlocked position the hand tool coverts downward linear force into rotary motion. In the locked position the hand tool operates as a ratcheting driver. The locking device locks the helical drive shaft of the hand tool in a retracted position such that the helical drive shaft is substantially positioned within the handle body. A locking main body is adjacent to a chuck assembly. The locking main body selectively combines with a shoulder abutment adjacent to the handle assembly to lock the helical drive shaft in the retracted position.

Abstract: The invention provides a screw head having a hexalobular slot (2) in the upper surface of the screw head, an upper peripheral wall (9) of hexalobular planform extending down into the screw head, the upper peripheral wall (9) being parallel or near parallel to the axis of the screw, a sloping transition surface (15) extending downwardly and inwardly with respect to the lower edge of the upper peripheral wall (9), and a tapered recess (11) extending downwardly from the lower edge of the sloping transition surface (15), in which the dimensions of the screw head are such that when the screw head is engaged by a tool (6) having upper (16) and lower engagement (17) sections, the lower engagement section (17) is tapered, and there is a ‘stick fit’ between the surface of the tapered recess (11) and the external surface of the lower tapered engagement section (17), and there is no engagement with the sloping transition surface (15).

Abstract: A battery-operated screwdriver has a housing with a handle, a rechargeable battery, charge contacts for charging the battery on a charger shell having at least one detachably mounted bit holder for storing tool inserts of the battery-operated screwdriver in captive fashion, so that the battery-operated screwdriver is placeable on the charger shell and a charging mode is produced automatically, and a charger shell for a battery-operated screwdriver has at least one detachable mountable bit holder configured to receive a plurality of bits which in operation are insertable in communication with the battery-operated screwdriver.

Abstract: A hexagon spanner handle of the present invention includes a handle whose three edges are inwardly concaved respectively so as to form three shaft-like bodies at three triangle points. The handle has plural hexagonal apertures in different sizes arranged along the three shaft-like bodies. One plane surface of the handle has three position-limiting slots which are respectively located in three shaft-like bodies and outwardly extended along the shaft-like body and are communicating with the hexagonal apertures. The bottom of each position-limiting slot has plural indentations in different widths, and a magnetic body is located at the end of the position-limiting slot. Thereby, each hexagonal aperture can be inserted by the short leg of corresponding hexagon spanner, and the position-limiting slot can receive the long leg of the hexagon spanner with the magnetic body attracts thereof for fixing, so that the handle can be assembled with hexagon spanners in different standards.

Abstract: A ratchet screwdriver with an accelerating structure is provided, in particular to one combined a ratchet seat and a solar gear system. The ratchet seat controls the operating direction, and the solar gear system increases the output rpm for a user to choose high or low revolution to facilitate tightness or looseness of a screw.

Abstract: A tight-spot fitting includes an elongated body configured to be inserted into and extracted from an aperture of a device, a user-operable head configured to be manipulated by a user to rotate the elongated body with respect to the aperture of the device, a depression in the user-operable head dimensioned and configured to receive a corresponding driver, and a through-bore extending through the elongated body and the user-operable head into the depression. The through-bore is configured and dimensioned to receive a line therethrough such that when the elongated body portion is inserted into the aperture, the line spans the aperture and through-bore, and extends through the depression.

Abstract: A handled tool with a firm structure comprises a driving portion having a driving end and a connecting end; the driving end being an operation end of the handled tool; an enlarged annular portion being below the driving end; a coarse section being between the annular portion and the connecting end; an extending unit being a rod; the extending unit having a first extending end and a second extending end; the first extending end being combined to the embedding groove of the driving portion; and a handle portion having a enclosing cover and a handle, in assembly, the first extending end of the extending unit being combined to the connecting end; the second extending end of the extending unit being received in the handle portion; the enclosing cover enclosing a portion of the extending unit protruded from the handle portion and a portion of the driving portion.

Abstract: The invention relates to a nozzle device for use in a paper machine, board machine, pulp dewatering machine etc., comprising a cylindrical body having an outer thread and an inner hexagon socket; a sealing element, and a nozzle insert having a cylindrical passage. The cylindrical body, the sealing element and the nozzle insert are preferably formed as a single part.

Abstract: Bone anchor insertion assemblies and methods are provided for inserting a bone anchor (e.g., bone screw) into bone without having to create a pilot hole. In some embodiments, the assembly includes a bone anchor, a housing member, and a rod. The housing member, which is coupled to the rod, is movable between proximally and distally advanced positions relative to the rod. In the proximal position, the bone anchor can be coupled to the rod. In the distal position, a tip of the bone anchor is generally aligned with a distal end of the housing member. The bone anchor is advanced into the bone under guidance of the housing member, where the tip of the bone anchor serves as a bone awl. Once the bone anchor is seated within the bone, the housing member can be returned to the proximal position to improve visibility of the surgical procedure.

Abstract: A ratchet driver includes a grip and a ratchet unit having a positioning base with a central through hole. The positioning base is mounted by a ratchet wheel and a direction-changing ring, having two accommodating grooves formed in its one side for respectively fitting a locking piece. An U-shaped groove is formed along the central through hole between the accommodating grooves, used for fitting an elastic element made of an elastic plate and having its two ends extended into the accommodating grooves to elastically rest on and strongly push the locking pieces while turning around the direction-changing ring, able to withstand a great integral torsion generated while turning the grip to drive the ratchet wheel and a driving head. Also, the ratchet driver has a simple structure, convenient to assemble and disassemble.

Abstract: Apparatus and methods for repairing damaged tendons or ligaments. Various repair apparatus include an elongate tensile member and a pair of anchor assemblies connected for movement along the tensile member on either side of a repair site, such as a tear or laceration. The anchor assemblies or structures may take many forms, and may include barbed, helical, and crimp-type anchors. In the preferred embodiments, at least one anchor structure is movable along the elongate tensile member to assist with adjusting a tendon segment to an appropriate repair position and the anchor structure or structures are then lockable onto the elongate tensile member to assist with affixing the tendon at the repair position. Tendon and/or ligament-to-bone repair apparatus and methods employ similar concepts.

Abstract: A fastening device for the attachment of a structural member to a support member comprising a lower portion having a shank portion of for example annular circumference and being provided with means for the attachment to the support member, and further comprising an upper portion having a radial flange at the outer side and an axial passage, the shank portion being insertable into the axial passage from one end thereof, at least one outer side of the shank portion having an axially parallel extending row of saw-tooth-shaped teeth, a resilient pawl being formed at passage such that the pawl and the row of teeth cooperate ratchet-like when the upper portion is pushed onto the shank portion and blocks a displacement in the opposite direction.

Abstract: A battery-operated screwdriver has a housing with a handle, a rechargeable battery, charge contacts for charging the battery on a charger shell having at least one detachably mounted bit holder for storing tool inserts of the battery-operated screwdriver in captive fashion, so that the battery-operated screwdriver is placeable on the charger shell and a charging mode is produced automatically, and a charger shell for a battery-operated screwdriver has at least one detachable mountable bit holder configured to receive a plurality of bits which in operation are insertable in communication with the battery-operated screwdriver.

Abstract: A screwdriver includes a first body having an end for coupling with a handle, a second body rotatably coupled to the other end of the first body, two pairs of engaging members, and a switch member pivotably mounted to the first body. Each pair of engaging members is slidably received in an associated transverse receiving section that includes two end openings in an outer circumference of the first body. Each engaging member includes a first end with an engaging portion. An elastic element is mounted between second ends of each pair of engaging members for biasing the pair of engaging members away from each other. The switch member is pivotable to selectively engage at least one of the engaging portions of each pair of engaging members with teeth of the second body, thereby controlling relative rotation between the first body and the second body.

Abstract: A radial foldout tool includes a body with opposing ends and one or more sets of tool drivers. A first set of tool drivers are positioned on/near a first end and a second set of tool drivers are positioned on/near a second end. The tool drivers are contained within channels of the body when in a closed position. The tool drivers are also contained in a plurality of planes. The tool drivers open by rotating/moving in a direction at least perpendicular to a neighboring tool driver. When they are in an open position, each of the tool drivers are in/near the center of the end of the body. By being positioned in/near the center of the end, the radial foldout tool is able to be gripped and turned in a fashion similar to a standard screwdriver.

Abstract: An anti-loose and anti-detachment insulated screwdriver including a main body made of insulation material, a shank body enclosed in the main body and a driving member having a top end as a driving end. A bottom end of the driving member is connected with a top end of the shank body. The main body has a handle section and a stem section. A top end of the stem section of the main body encloses a circumference of the driving member with the driving end of the driving member exposed to outer side of the main body. The main body is connected with the shank body by greater connection strength so that the shank body can bear greater twisting force. The shank body has such a configuration that the total weight of the insulated screwdriver is reduced.

Abstract: A pneumatic fastener driving tool is configured to drive a threaded fastener using both linear and rotational motion. The tool allows a fastener to first be driven linearly, without rotation, through a surface material and into a substrate material, preferably to a depth that causes the fastener to at least pierce the substrate material. The tool then rotates the threaded fastener and causes it to fully engage the substrate material, thereby fastening the surface material to the substrate material. The tool has sufficient linear force to drive a fastener into relatively hard substrate materials, such as steel studs, and has a stationary air motor assembly to reduce recoil generated during the driving process. The tool further comprises a gear reducer assembly that uses a compound planetary gear in order to reduce the overall length of the tool.