Abstract: A system and method for improving installation of a prosthesis. Devices include prosthesis installation tools, prosthesis assembly tools, site preparation systems, and improved power tools used in implant site preparation, the tools including a secondary motion that preferably includes an ultrasonic vibration.

Abstract: A surgical blade assembly includes a blade having side surfaces defining a width greater than its thickness. The surgical blade assembly also includes a reinforcing member having a body portion, and first and second arms extending from the body portion to define a receiving portion. The receiving portion is configured to receive the blade and the first and second arms are configured to abut the side surfaces of the blade. The first and second arms act as a strut to reinforce the blade against external forces applied to the blade. The blade and the reinforcing member may include coupling features to prevent separation of the reinforcing member from the blade. The blade and the reinforcing member may be substantially perpendicular to each other when coupled.

Abstract: A blade for a reciprocating saw, said blade being made from at least a bimetallic sheet material and comprising a flat body portion comprising a low-alloy steel material or a carbon steel material, a cutting edge portion comprising a high-speed steel material provided with a plurality of teeth arranged at a first edge of said flat body portion, and a back edge portion arranged at a second edge of said flat body portion opposite of said cutting edge portion, wherein said back edge portion is provided with a non-cutting micro-structured surface.

Abstract: A handheld lawn maintenance tool having a power head to which an adapter is attachable to allow both battery-powered and gasoline-powered working attachments to be attached thereto. The power head includes a power source, integrated first and second handles, a power generator, and a first attachment mechanism to which the adapter and/or working attachments are attachable.

Abstract: A hole saw includes a base member configured to secure the hole saw to a drive device and a blade member extending orthogonally from each side of the base member. Each blade member is configured having respective distal ends that flex transversely to a longitudinal cutting direction of the blade member. Responsive to rotational movement of the hole saw via the drive device against a structure, a medial location of each blade member creates an initial respective linear cutting path into the structure, and further movement of the respective blade members into the structure cause the distal ends of the respective blade members to flex transversely to the cutting direction and follow the initial linear cutting path despite the rotational movement of the hole saw relative to the structure to produce a linear cut through the structure.

Abstract: A blade replacement tool for use in replacing a combine cutting saw knife. The blade replacement tool includes a cable that is operatively connected to a connection link that is used for transferring pulling force to a connected combine cutting saw knife. A pull handle is fastened to the cable. The pull handle receives a pulling force that is transferred via the cable and via the connection link to a connected combine cutting saw knife. The cable is strong, thin and flexible. The pull handle is at least two feet (2 ft.) long. The connection link includes an attachment bracket having first and second apertures for attaching to a cutting saw knife (sickle) via mating apertures in a cutting saw knife (sickle).

Abstract: An oscillatory driving device for a hand-held power tool includes at least one input shaft, at least one output shaft, and at least one gearing unit. The gearing unit operatively connects the input shaft to the output shaft and includes at least one eccentric element configured to drive the output shaft in an oscillatory manner. The gearing unit includes at least one further eccentric element configured to drive the output shaft in an oscillatory manner.

Abstract: A surgical method uses a surgical instrument having an operative tip or end effector and an applicator of energy having an energy-transmitting interface, the applicator being different from the surgical instrument and separate therefrom. The method contemplates conducting an interventional procedure including steps of: (i) manipulating the instrument to place the operative or end effector in contact with bone tissue of a patient at a surgical site, (ii) using the surgical instrument to surgically operate on the bone tissue at the surgical site, (iii) prior to a termination of the procedure, manipulating the applicator to place the interface in contact with bone of the patient at or proximate the surgical site, and (iv) operating the applicator to apply, to the bone via the interface, energy with parameters of type, intensity, and duration selected for stimulating the healing of bone tissue.

Abstract: A blade for oscillating tools includes lateral edges, a working edge that extends in a first direction, and a mounting portion. The mounting portion includes a first mounting configuration that defines a first center and a second mounting configuration that defines a second center, where the first center is spaced a distance away from the second center in a direction that is substantially orthogonal to the first direction in which the working edge extends or to a tangent of a center of curvature of the working edge. Both mounting configurations are configured to drive the same working edge.

Abstract: A handsaw is provided with which chip clogging can be reduced significantly, the pitch of the tooth points can be made fine, the cut end face, called “top edge”, of each tooth can be increased in area, and moreover, cutting resistance is kept small and good cutting performance is ensured. The handsaw has a plurality of saw teeth arranged on a longitudinal edge (21) of a saw blade (20). The saw teeth are configured as a combination of crosscutting teeth (X) of triangular or trapezoidal prism shape and ripping teeth (Y) of parallelogram-based prism shape. The prism-shaped teeth constituting the crosscutting teeth (X) and the ripping teeth (Y) are configured such that at least adjacent prism-shaped teeth rise at a same rising angle (?) from an edge surface (21a) of the longitudinal edge (21) of the saw blade (20), to cause a space (S) between the adjacent prism-shaped teeth to be constant in a rising direction in which the teeth rise.

Abstract: A system and a method for sawing control joints in concrete barriers is provided. The system includes a barrier mounting frame slidably mountable about the barrier, on the top, first and second lateral faces of the barrier. The system also includes a saw attachment having a circular saw attached thereto, the circular saw being manually operable. A linkage assembly connects the frame mounting barrier to the saw attachment, and allows to manually move the circular saw up or down, and towards or away from the barrier, when in use, to create the control joint transversally along the top, first and second lateral faces of the barrier.

Abstract: A system and method for improving installation of a prosthesis. Devices include prosthesis installation tools, prosthesis assembly tools, site preparation systems, and improved power tools used in implant site preparation, the tools including a secondary motion that preferably includes an ultrasonic vibration.

Abstract: A machining device includes a rotary cutting tool, and an electric motor as a drive source for rotating the rotary cutting tool. A motor housing of the electric motor is connected to a stationary cover covering the rotary cutting tool. The electric motor is an outer rotor type electric motor includes a stator situated inside of a rotor. A rotor is supported by a motor shaft at a position of output side in the motor axis direction with respect to the stator. The rotor is mounted to the rotor base and is rotatably supported on the stationary cover. The stator is fixed to the motor housing so as to be immovable in the motor axis direction, and is arranged inside of the rotor.

Abstract: An oscillatory drive is specified, having a housing in which there are accommodated a drive motor for driving a motor shaft in rotation and a tool spindle, and a first coupling drive mechanism which is coupled to the motor shaft and to the tool spindle for the purpose of driving the tool spindle in oscillatory fashion about its longitudinal axis, wherein a second coupling drive mechanism is coupled to the tool spindle such that the tool spindle performs a superposed movement composed of a rotary oscillating movement and a movement directed perpendicular to its longitudinal axis.

Abstract: A recip blade has a blade body including a cutting edge and a tang located at one end of the blade body. The tang defines an arcuate cross-sectional shape or is laminated to increase the overall thickness of the tang and, in turn, enhance the rigidity of the blade and/or reduce oscillation or whipping of the blade during cutting.

Abstract: A reciprocating cutter system for use in spaces where a typical saw is unable to operate due to size, space, and operability limitations is disclosed. In at least one embodiment a reciprocating cutter system includes: a housing; a handle disposed on a top portion of the housing to provide an operator a user grip to operate the system; a cable saw coupled to the housing of reciprocating cutter system; a spring disposed within the housing and coupled to the cable saw such that as the cable saw is moved in a back-and-forth motion when in use, the spring also moves in a back-and forth-motion without the operator-held handle needing to move; and a connectivity bit, coupled to the cable saw, to connect the wire saw through the connectivity bit to a reciprocating device, the reciprocating device to provide the back-and-forth motion to the connectivity bit and the cable saw.

Abstract: A hedgetrimmer having a blade assembly that includes a sawblade for cutting through larger branches and other vegetative foliage. The sawblade portion is fixedly secured to the reciprocating hedgetrimmer blade assembly to move in linear back and forth motion. It extends beyond a support bar for the hedgetrimmer blades so that it's able to cut through the branch. A support bracket is attached to the support bar to brace and support the branch as its being cut by the saw blade. Also included is a pivotable guard bar at the tip of the blade assembly so protect the blades and to protect any object or structure that may be accidently struck by the blade assembly.

Abstract: Devices and methods for use in removing the foliage from stems of leafy vegetables and sprigs of herbs are shown and described. The device has a body that is sized and shaped to fit comfortably into a one hand. The body can be generally flat and can have at least one edge following a convex curve. A trimming blade projects outwardly from at least a portion of the convexly curved edge of the body. A selection of apertures of different sizes extends through the body. The user can select an aperture large enough to allow the stem to pass through, but too small for the foliage to pass through. During use, a user can use the trimming blade to trim off unwanted parts from a sprig of herb or a piece of leafy vegetable, pass the sprig through a selected aperture sized to remove the foliage therefrom, and cut the foliage to the desired size by rocking the trimming blade along its length over the foliage.

Abstract: The present disclosure relates to a saw, comprising a drive, a first blade configured to oscillate about an axis perpendicular to a plane defined by a surface of the first blade, a second blade configured to oscillate about an axis perpendicular to the plane in a direction opposite to that of the first blade, and wherein gearing is provided between the drive and the first and second blades to reduce the speed transmitted from the drive to the blades. A saw blade, a connection mechanism for connecting a blade to a saw and associated methods are also provided.

Abstract: A blade coupling mechanism for a hand-held surgical cutting instrument includes a first coupling member including a first blade-contacting surface and a first outer perimeter sidewall adjacent the first blade contacting surface. It also includes a second coupling member including a second blade-contacting surface facing the first blade-contacting surface of the first coupling member. The second coupling member includes a second outer perimeter sidewall adjacent the second blade contacting surface. The second blade-contacting surface and the second outer perimeter sidewall meet to define an outer edge. The second coupling member including a bore through the second blade contacting surface. The bore and the second blade contacting surface meeting to define an inner edge. Blade-engaging protrusions project from at least one of the first and second blade-contacting surfaces. The protrusions are spaced closer to the outer edge than the inner edge.

Abstract: An electric double-blade slot cutting machine include a first cutting unit having a first cutting part and provided along a cutting route and presents a reciprocating movement; a second cutting unit having a second cutting part provided along the cutting route and presents the reciprocating movement, wherein moving directions of the first cutting unit and the second cutting unit is opposite while cutting; a restriction holder for restricting the first cutting unit and the second cutting unit to moving along the cutting route; a transmission unit; and a motor. With the foregoing structure, the electric double-blade slot cutting machine can work with small vibration and stable performances; a speed of the motor is increased for improving work efficiency; and with an extension rod, the electric double-blade slot cutting machine is adaptable for standing utilization.

Abstract: A sawing power tool, in particular a sawing hand-held power tool, includes at least one clamping mechanism that is configured to fasten a saw blade to be driven with a stroke motion. In one embodiment, the at least one clamping mechanism fastens a compass saw blade that has a blade body which includes a cutting edge with cutting teeth and that has a fastening shaft. The at least one clamping mechanism has at least one geometric structure that forms a form-closure element that is configured to form a connection to at least one at least portionally inverse form-closure element of the saw blade.

Abstract: A surgical blade assembly for use with a driver includes a blade with a distal cutting portion, and a proximal end has a first dimension which is less than what is applicable for use with a specific driver head. An insert is affixed to the blade proximal end and, when affixed to the blade proximal end, is configured to enable the blade for use with the driver head. A surgical cutting tool includes such a surgical blade assembly and a driver head receiving the blade assembly. A surgical cutting tool kit includes a driver with a head for receiving the blade assembly, and a plurality of such surgical blade assemblies for use with the driver, wherein the blades have different thicknesses (a) and/or widths and the corresponding inserts are configured such that the proximal ends of the surgical blade assemblies all include at least one same constant dimension (b).

Abstract: A keyhole saw blade or sabre saw blade for a power tool comprises a base blade having a cutting edge and a securing shank designed as one piece with the base blade. At least one impression is formed into the base blade or the securing shank.

Abstract: A supporting and stabilizing shoe used with a masonry circular power saw. A shoe frame rigidly mounts to the saw's motor frame. A plate that is preferably substantially planar and bifurcated to form two substantially co-planar members with a gap therebetween pivotably mounts to the shoe frame. A spring biases the plate away from the blade, but can be overcome, and an adjustment knob tightens the plate in position relative to the blade. This provides for depth adjustment for the blade and keeps the blade at a desired angle, such as ninety degrees, to the workpiece surface. The plate extends longitudinally from the motor frame beneath the drive mechanism and the blade of the saw to provide a stable surface upon which the saw can rest during use or storage.

Abstract: Saws including saws configured to allow change in a width, a direction, and a curvature of a cut during a cutting operation are described. The saws include a saw blade, the saw blade being flexible along a longitudinal axis of the saw blade and inflexible along a vertical axis of the saw blade. The saw blade includes a blade body, and a plurality of cutting teeth, the plurality of cutting teeth being disposed on an upper cutting edge of the blade and a lower cutting edge of the blade body. In some examples, the saw blade is configured to be flexed by manipulation of at least two articulating points on the saw blade during the cutting operation to change one or more of the kerf, the direction, and the curvature of the cut.

Abstract: The invention relates to a handheld work apparatus having a handle. A throttle trigger and a throttle trigger lock are arranged on the handle. An operating-mode selector having an off position, an operating position and a starting position is provided. The selector, trigger lock and the trigger are pivotally mounted. A first latching element is provided on the selector and a second latching element is provided on the trigger element, which coact in the starting position of the selector and the starting position of the trigger and hold the trigger in its starting position. To ensure that the starting position of the selector can only be engaged when the trigger is actuated, the second latching element lies outside of the pivot path of the first latching element in the non-actuated position of the trigger.

Abstract: A power tool includes a power source, a speed change mechanism and a tip tool wherein the speed change mechanism has first and second rotating shafts arranged in parallel, a first power transmission passage equipped with a first gear train and a first clutch, and a second power transmission passage equipped with a second gear train and a second clutch. The speed change mechanism is constituted to switch the transmission passage between the first power transmission passage and the second power transmission passage while keeping the first and second gear trains in meshed state by switching the first and second clutches between power transmission state and power interruption state depending on a load applied to the tip tool.

Abstract: Disclosed herein is a system for releasing a ligament. In one embodiment, the system includes a proximal handle, a tubular body, and a flexible body. The tubular body includes a proximal end and a distal end. The handle is coupled to the proximal end. The flexible body extends through the tubular body and includes a tissue cutting portion. The flexible body or tubular body is longitudinally displaceable to move the tissue cutting portion between a non-deployed state and a deployed state.

Abstract: The present disclosure relates to a saw, comprising a drive, a first blade configured to oscillate about an axis perpendicular to a plane defined by a surface of the first blade, a second blade configured to oscillate about an axis perpendicular to the plane in a direction opposite to that of the first blade, and wherein gearing is provided between the drive and the first and second blades to reduce the speed transmitted from the drive to the blades. A saw blade, a connection mechanism for connecting a blade to a saw and associated methods are also provided.

Abstract: A hand saw that includes a saw blade and a handle assembly having a clamp member movable between a clamped position and a released position. In the clamped position the clamp member exerts a clamping force on a top edge of the saw blade within a slot of the handle assembly to couple the saw blade to the handle assembly and to retain a tang of the saw blade within the slot. In the released position the tang is removable from the slot. A first interior wall and a second interior wall of the handle assembly that define the slot are flat such that the tang of the saw blade can be removed from the slot without moving the saw blade in a direction normal to a longitudinal axis of the saw blade when the clamp member is in the released position.

Abstract: The present invention relates to a saw including a sawhead pivotably connected to a base. The pivotable connection may define a pivot axis therethrough, wherein the pivot axis may be parallel to the horizontal plane. In addition, the sawhead may rotate around the pivot axis and may be axially displaceable along the pivot axis.

Abstract: A material removing tool, such as a cutting or grinding tool, adapted to be oscillated by the output shaft of a manually operable motor-driven apparatus, is provided with at least one elongated cutting edge defined by teeth or analogous cutting elements arranged in at least one at least substantially straight linear array.

Abstract: An accessory tool is configured to be coupled to a power tool having a tool drive structure. The accessory tool includes a spring component and has a first arm and a second arm attached to the spring component. The first arm includes (i) a first proximal end portion defining a first accessory drive structure that is configured to mate with a first portion of the tool drive structure, and (ii) a first distal end portion having a first holding structure. The second arm is spaced apart from the first arm and includes (i) a second proximal end portion defining a second accessory drive structure that is configured to mate with a second portion of the tool drive structure, and (ii) a second distal end portion having a second holding structure.

Abstract: A handle for a hand held engine powered tool may include at least one lever or button for controlling the tool. The handle is made of at least two handle sections joined together. The lever or button for controlling the tool is however only secured in one of the handle sections in order to reduce the required grade of precision between the handle sections without affecting the performance of the lever or button.

Abstract: A power saw includes an electric motor, an impact assembly, and a blade retaining assembly. The electric motor includes an output shaft. The impact assembly is coupled to the output shaft and includes a hammer member and an anvil member. The blade retaining assembly is coupled to the impact assembly and includes a blade coupling configured to connect to a saw blade. The impact assembly is configured to operate in a first mode when a mechanical load on the blade retaining assembly is below a threshold value. The impact assembly is configured to operate in a second mode when the mechanical load on the blade retaining assembly is greater than or equal to the threshold value. The hammer member is maintained in a fixed position relative to the anvil member when the impact assembly operates in the first mode. The hammer member intermittently impacts the anvil member when the impact assembly operates in the second mode.

Abstract: A hand-held saw with a rigid saw frame is disclosed. The rigid frame of the hand-held saw allows a saw blade to remain highly tensioned during the cutting process. The rigid saw frame has a “C-shape,” is unbent, and contains openings that make up a truss-like structure, which distributes an external force that is focused on one portion of the saw frame across other portions of the saw frame.

Abstract: A hand-held power tool protective device (10a-d) for a hand-held power tool (12a-d) with a drive unit and a tool (26a-d) includes an operating element (14a-d, 16a-d) which can actuate an electrical switch for activating the drive unit and a shut-off unit (18a-d) have a shut-off mechanism (24a-d). The shut-off unit (18a-d) brings about a shut-off during a deactivation of the operating element (14a-d, 16a-d) and therefore, a deactivation of the drive unit via the at least one shut-off means (24a-d). An emergency shut-off unit (28a-d) enables an emergency shut-off of an operation of the tool (26a-d) when the operating element (14a-d, 16a-d) is activated. The shut-off unit (18a-d) and the emergency shut-off unit (28a-d) are at least partially formed integrally.

Abstract: A hand saw that includes a saw blade and a handle assembly having a clamp member movable between a clamped position and a released position. In the clamped position the clamp member exerts a clamping force on a top edge of the saw blade within a slot of the handle assembly to couple the saw blade to the handle assembly and to retain a tang of the saw blade within the slot. In the released position the tang is removable from the slot. A first interior wall and a second interior wall of the handle assembly that define the slot are flat such that the tang of the saw blade can be removed from the slot without moving the saw blade in a direction normal to a longitudinal axis of the saw blade when the clamp member is in the released position.

Abstract: An apparatus for the cutting of tree limbs includes an extensible drive shaft that is detachably-attachable at one end to a portable electric drill and is secured to a housing at an opposite end thereof. The housing converts the rotary motion that is supplied by the drill into reciprocating motion of a saw blade and it disposes the saw blade at an angle with respect to the drive shaft that is slightly less than 90 degrees. An extensible two-part cylindrical outer sleeve covers the drive shaft and is detachably-attached at one end thereof to the drill and at an opposite end to the housing. A hook is provided in the housing and is used to grab and urge severed limbs where desired. An optional clamping mechanism is attached to the housing and is used initially to urge the blade and the limb toward each other during cutting and then to retain the limb proximate the housing after it has been cut for controlled placement and safe release of the limb.

Abstract: A hand-held power tool, in particular a hand-held power tool for sawing, includes a drive unit (12a), which includes a drive shaft (14a; 14b), and a dust-extraction device (16a; 16b) with a suction unit (20a; 20b) and a drive shaft (22a; 22b). A transmission unit (24a; 24b) is installed upstream of the drive shaft (22a; 22b) of the suction unit (20a; 20b).

Abstract: An extendable hedge trimmer includes a housing having a handle end and a tool end. The handle end includes a battery and an electrical connector. The tool end includes a hedge trimming implement, a motor, and an electrical connector. The electrical connector of the tool end is electrically connected with the motor. Wiring is included within the handle end for electrically connecting the battery and the electrical connector of the handle end. The trimmer also includes a pole which is releasably connectable between the tool end and the handle end. The pole is configured for electrically connecting the handle end with the tool end. The trimmer also includes a latch mechanism for releasably attaching the pole between tool end and handle end. The trimmer also includes an input for receiving AC line power via a power cord, the trimmer configured for being powered by AC line power and/or battery power.

Abstract: A power tool includes a handle including a support portion movably supportable on a housing portion and extending substantially about the circumference of the housing portion. The support portion may include a second end movable relative to a first end such that the support portion selectively applies a force to the housing portion. The tool may include a bevel angle detent mechanism in which one of the detent member and the recess is angularly adjustable relative to the associated one of the detent support and the recess support to adjust the predetermined bevel angle position. A bevel angle detent mechanism may include an engagement operating assembly operable between a detent engagement-enabled condition, in which the detent member is engageable in the recess, and a detent engagement-prevention condition, in which the detent member is prevented from engaging the recess. The tool may include a spindle lock assembly.

Abstract: A tool for removing unwanted plants from an area of soil is disclosed. A flexible two-edged blade bent back upon itself with both ends fastened to a common shaft. One edge acts as a knife to slice through soil and roots, moving parallel to the surface of the ground. The opposing blade edge has teeth to grasp, uproot and remove unwanted plants. The design facilitates the removal of unwanted plants or debris without touching said debris with the hands.

Abstract: A surgical sagittal saw with a head that is able to index, rotate, relative to the longitudinal axis of the saw housing. The head has a neck that extends into an open distal end of the housing. A biasing assembly holds the head and neck sub-assembly in the open distal end of the housing. The biasing assembly is rotatable relative to the housing. A separate lock mechanism selectively holds the head in a fixed orientation around the saw housing longitudinal axis.

Abstract: The present invention relates to a saw including a sawhead pivotably connected to a base. The pivotable connection may define a pivot axis therethrough, wherein the pivot axis may be parallel to the horizontal plane. In addition, the sawhead may rotate around the pivot axis and may be axially displaceable along the pivot axis.

Abstract: A pole saw head which comprises a cheek plate having an integral downwardly curved arm and an integral upwardly rope setting auxiliary notched hook strategically positioned on an end of the arm. The notched hook will hold a loop of a length of rope tied in a monkey's fist knot thereto. A mechanism is for coupling the cheek plate to a top end of a pole. When the pole is manually manipulated by a person grasping the pole the notched hook can release the loop on the monkey's fist knot, so that the monkey's fist knot will appropriately uncoil when the rope is tossed over a branch of a tree.

Abstract: An apparatus for the cutting of tree limbs includes an extensible drive shaft that is detachably-attachable at one end to a portable electric drill and is secured to a housing at an opposite end thereof. The housing converts the rotary motion that is supplied by the drill into reciprocating motion of a saw blade and it disposes the saw blade at an angle with respect to the drive shaft that is slightly less than 90 degrees. An extensible two-part cylindrical outer sleeve covers the drive shaft and is detachably-attached at one end thereof to the drill and at an opposite end to the housing. A hook is provided in the housing and is used to grab and urge severed limbs where desired. An optional clamping mechanism is attached to the housing and is used initially to urge the blade and the limb toward each other during cutting and then to retain the limb proximate the housing after it has been cut for controlled placement and safe release of the limb.

Abstract: A hand saw that includes a saw blade and a handle assembly having a clamp member movable between a clamped position and a released position. In the clamped position the clamp member exerts a clamping force on a top edge of the saw blade within a slot of the handle assembly to couple the saw blade to the handle assembly and to retain a tang of the saw blade within the slot. In the released position the tang is removable from the slot. A first interior wall and a second interior wall of the handle assembly that define the slot are flat such that the tang of the saw blade can be removed from the slot without moving the saw blade in a direction normal to a longitudinal axis of the saw blade when the clamp member is in the released position.

Abstract: A power transmission system including a component having a surface and a plurality of micro-defects is provided. The surface has a distribution of asperities has a second resonance frequency distribution that is substantially outside of the resonance frequency distribution.