Embodiments of the invention relate to superabrasive compacts including multiple superabrasive cutting portions and methods of repairing a rotary drill bit that employs at least one of such superabrasive compacts.

The present invention is a sharpening tool and sharpening system for sharpening snowmobile carbide wear rails and studs and a kit of parts that includes the sharpening tool and a steering member having a carbide wear rail. The sharpening tool is attachable to the chuck of a hand held drill and includes a shaft attachable to the chuck of the hand held drill and cylindrical head affixed to the shaft. The cylindrical head includes a rail groove surfaced in an abrasive material for sharpening wear rails.

A skate squaring device includes a main frame having a slot to receive a skate blade. The main frame is designed to attach to a portion of a skate sharpening fixture such that calibration lines on the main frame are perpendicular to a centerline axis of a body of the skate blade when mounted in the holder. A magnetic angle is attached to the end of the skate blade and positioned adjacent a face of the main frame having the calibration lines to determine if the skate blade edge is square.

In some examples, a laminated tooling die may include multiple sheets or plates used in conjunction in any of a number of forming operations such as, for example, hydroforming, compression molding, and stamping. The sheets or plates can include an open interior that, when used in conjunction with neighboring sheets, produce a cavity into which a deformable workpiece can be placed and subjected to the forming operation. In some examples, one or more sheets can be coupled with a heat exchanger to impart a heat transfer with the workpiece.

A steel rule die making system produces a steel rule dies having an operative surface that form creases and cut patterns in a sheet material to form a box blank. The system includes a die manufacturing station having an indexing bench that securely holds a substrate. At least one slug driver device is disposed adjacent the die manufacturing station to drive the penetrating point of a slug into the substrate. The upper surface of the slug head defines a segment of the operative surface of the steel rule die.

A bit mold is milled using a turning stage which forms a base mold component and a base gagering component. Next, a blade milling stage is performed in which the base mold component and base gagering component are milled to define integral junkslot formers separated by blade regions. Lastly, a pocket milling stage is performed in which the blade regions and integral junkslot formers of the base mold component are milled to define a plurality of cutter pockets in primary and perhaps secondary rows. Each cutter pocket includes a seat portion and a face portion. The milling of the pocket milling stage provides, at one or more of the cutter pockets, a facet. This facet is provided in an area about the junkslot former associated with the face portion of the cutter pocket, the face portion having, due to the presence of the facet, a surface for matching a cutter core displacement end surface without voids of a size which would require the use of fill material. The facet is also provided on either side of the pocket associated with the seat portion to avoid the need to clay the sides of the displacement for providing top-loading clearances. The milling process at the pocket milling stage further supports definition of relief and erosion resistance features in the mold.

A method for profiling broad sides of a flat reversible key. A key blank is clamped to expose the first broad side of the key blank and complementary grooves and ribs are milled using a milling cutter with cutter teeth by advance in the longitudinal direction of the key relative to the longitudinal section profile of the cutter teeth. The key blank is then clamped in a position turned by 180° about the longitudinal center axis of the key so that the second broad side of the blank is exposed, and complementary grooves and ribs are milled into the broad side with milling cutter, by advance in the longitudinal direction of the key. The cutter shaft axes is inclined at an angle of inclination (φ) relative to the longitudinal center plane of the key, at least one cutter tooth rib of the cutter teeth producing an undercut guide wall.

A method of manufacturing a drill bit having a bit body and a plurality of blades extending radially from the bit body is disclosed, wherein the method includes adhering a first matrix material to at least a portion of a mold cavity corresponding to an outer surface of the bit body, loading a second matrix material into the other portions of the mold cavity, and heating the mold contents to form a matrix body drill bit.

A method for profiling the broad sides of a flat key, a key blank being clamped in a clamping device so that the broad side of the key blank is exposed. Guide grooves and variation grooves which are complementary to the longitudinal sectional profile of the cutter teeth are milled into the broad side by advance in the longitudinal direction of the key, in one work operation, using a milling cutter that has cutter teeth on its peripheral surface and rotates about a cutter shaft. To produce undercut grooves, the axis of the cutter shaft is inclined at an angle of inclination relative to the longitudinal center plane of the key, ribs of the cutter teeth producing an undercut guide wall using at least one rib.

Embodiments provide various components of a chain saw, including saw chain elements, sprockets, and other fixtures, that may facilitate sharpening of cutter links during operation. In various embodiments, the components may increase stability during sharpening, provide nose mounted sharpening fixtures, and/or facilitate the resizing and/or reshaping of a sharpening element.

A cutting table includes a cutting surface, an opposing surface, a cutting table outer wall, and one or more fins. The cutting table outer wall extends from the circumference of the opposing surface to the circumference of the cutting surface. The fins extend from a portion of the cutting surface to a portion of the cutting table outer wall. The cutting table is optionally leached prior to forming the fins. One or more fins are positioned in parallel with at least another fin in some embodiments. In some embodiments, the fins are positioned circumferentially around the cutting surface. In some embodiments, the cutting table is coupled to a substrate to form a cutter. The fins are formed either after or during the formation of the cutting table.

Various embodiments of the invention may be used to verify that a person being authorized by biometric techniques to use a device is a living person and not some form of recording intended to spoof the system. Some embodiments may try to cause a change in a measured biometric feature, and compare images taken before and after the change to verify the change occurred. In some embodiments, multiple stages of verification may be used, either to increase the difficulty of spoofing the security system, or to provide different levels of security for different levels of access to the device's functionality.

The kitchen knife with the sharpener includes: a cutout recess formed in an end of the handle; a locking space extending from the cutout recess; and a sharpener, including: a locking part removably received in the locking space; a sharpener body extending from the locking part; a whetting groove transversely formed in the sharpener body; plate-shaped whetstones inclinedly installed on opposing sidewalls of the whetting groove so that the whetstones form a V-shaped arrangement; and a rubber cushion placed below a rear surface of a whetstone.

A drilling tool for machine tools has a drill body, a cutting head arranged on the front face of the drill body and a shaft arranged at the end thereof, wherein the drill body has two chip flutes, which are delimited at their flanks by ribs and a first chip flute of which is spirally curved. A second chip flute is not spiraled or is spirally curved with a pitch differing from the first chip flute, preferably running in the same direction of rotation.

An adjustable manual abrasive sharpener having a pair of sharpening slots formed in a frame with opposing abrasive arms being pivotally mounted in each of the sharpening slots. A rod is mounted on the frame for rotatable motion and for linear motion long its axis of rotation from a position at which the rod is locked against rotation to a depressed position whereby the rod may be rotated. The bottom end portion of the rod includes a pinion gear which engages a pair of gear racks which are mounted for movement laterally relative to the axis of rotation of the rod. The pair of gear racks respectively engage slots formed on the bottom of the abrasive arms in each sharpening slot. Rotation of the rod causes movement of the gear racks to adjust each pair of abrasive arms with respect to each other to vary the sharpening angle of the abrasive elements.

A method for the manufacture of a cutting tool provided with a tool holder (1) to which a cutter (2) is separably attached, includes applying a generative production process to a tool base body (3) to create the tool holder (1) with a desired finished shape.

A chain sharpening device arranged to sharpen a saw chain. The device comprises a housing (110), arranged to be detachably mounted on the guide bar (3), a sharpening element (140) selectively displaceable relative to the housing between a resting state and a sharpening state, an actuator (150), selectively displaceable between an inactivated state and an activated state, which actuator is connected to the sharpening element and arranged to selectively bring the sharpening element from the resting state to the sharpening state, a first biasing member (160) operatively connected to the actuator and arranged to bias the actuator towards its inactivated state, a second biasing member (170), operatively connected to the sharpening element and arranged to enable relative movement between the actuator and the sharpening element when the sharpening element is in the sharpening state, so as to delimit a force with which the sharpening element (140) can be pressed towards the saw chain.

A method for bonding together components, such as a tip and a shaft which include mutually facing carbide end surfaces. The tip includes circumferentially spaced flutes formed in its cylindrical outer periphery. The shaft has a cylindrical outer periphery and a plurality of coolant holes extending through the shaft. Bonding of the tip to the shaft is performed by inserting gauge wires into the coolant holes and associated flutes, and positioning brazing material between the first and second end surfaces. A water-soluble bond-blocking material is applied to the gauge wires for preventing brazing of the gauge wires to the brazing material. The brazing material is heated to braze the first and second end surfaces together while the flutes and their associated coolant holes are maintained in alignment by the gauge wires. Then, the gauge wires are removed, and residual bond-blocking material is dissolved in water.

A method of manufacturing a roller cone drill bit may include forming a body of a single piece having an upper end and a lower end; machining at the lower end of the body at least two journals extending downward and radially outward from a central axis of the body; machining at least one of a ball passage, a hydraulic fluid passageway, a grease reservoir, and a lubricant passageway; and mounting roller cones on the at least two journals.

A threaded fastener driving tool includes a proximal end portion, a distal driving head, and a torsion zone extending proximally from the driving head, The distal driving head has a central portion and a plurality of driving surfaces. Each pair of adjacent driving surfaces define a driving space therebetween. The driving surfaces and driving spaces are configured to engage a threaded fastener. The torsion zone includes a plurality of helical grooves bounded by non-cutting surfaces, each helical groove in communication with and extending proximally from at least one of the driving spaces. The helical grooves are configured to untwist and cause lengthening of the torsion zone when an input torque applied to the proximal end portion is insufficient to overcome an output resistance torque at the driving head. The torsion zone may comprise a plurality of twisted wires or cables. A method of manufacturing the driving tool is disclosed.

A superabrasive compact (e.g., a polycrystalline diamond compact) including a substrate pre-coated with at least one braze layer and an in-process drill bit assembly including at least one of such superabrasive compacts are disclosed. Pre-coating the substrate with at least one braze layer and dimensioning the pre-coated substrate to fit within the tolerances of a conventionally-sized cutter recess of a drill bit body enables a drill bit manufacture to easily and rapidly braze the disclosed superabrasive compacts into the conventionally-sized cutter recess without substantially decreasing the superabrasive volume of the superabrasive compact.

A method of thermo-mechanically processing a preform composed of tool steel and a tool to modify a workpiece. The preform has a region containing austenite. The method comprises establishing the region at a process temperature between a martensitic start temperature and a stable austenitic temperature. While at the process temperature, the region is deformed to change an outer dimension and to modify the microstructure to a depth of 1 millimeter or more. The tool comprises a member composed of tool steel. The member includes a first region that extends from the outer surface to a depth of greater than 1 millimeter and a second region. The first region includes a plurality of grains having an average misorientation angle greater than about 34°, an average grain size that is at least 10% smaller than the second region, and has a different grain orientation than the second region.

Earth-boring drill bits include a bit body, an element having an attachment feature bonded to the bit body, and a shank assembly. Methods for assembling an earth-boring rotary drill bit include bonding a threaded element to the bit body of a drill bit and engaging the shank assembly to the threaded element. A nozzle assembly for an earth-boring rotary drill bit may include a cylindrical sleeve having a threaded surface and a threaded nozzle disposed at least partially in the cylindrical sleeve and engaged therewith. Methods of forming an earth-boring drill bit include providing a nozzle assembly including a tubular sleeve and nozzle at least partially within a nozzle port of a bit body.

An apparatus and method for manufacturing a downhole tool that reduces failures occurring along a bondline between a cemented matrix coupled around a blank. The cemented matrix material is formed from a powder and a binder material. The blank includes an internal blank component and a coating coupled around at least a portion of the surface of the internal blank component. The internal blank component includes a top portion and a bottom portion. The internal blank component is substantially cylindrically shaped and defines a channel extending through the top portion and the bottom portion. The coating is a metal in some exemplary embodiments. The coating reduces the migration of the binder material into the blank thereby allowing the control of intermetallic compounds thickness within the bondline.

The application comprises a blank for producing a cutting tool with at least one inner bore for conducting fluids, wherein the blank comprises at least a first and a second portion along, its longitudinal axis, wherein the inner bore in the first portion is formed substantially in a straight line and parallel to the longitudinal axis of the blank, and the inner bore in the second portion has a first twist with a first twist angle greater than zero, wherein the blank can be obtained by a continuous pressing operation, in particular a continuous extruding operation. The application also describes an extrusion device for producing a blank, wherein the extrusion device comprises a control element for controlling the twist angle, in particular the first and/or second twist angle.

A portion of the sharpener handle is recessed to receive the curved blade of a lopper. The cutaway allows the sharpening element to sharpen the lopper blade along its entire length. Additional sharpening elements can be positioned along the handle to provide a multipurpose sharpening tool.

Razors are described herein. In some instances the razors include a safety razor blade unit that includes a guard, a cap, and at least two blades with parallel sharpened edges located between the guard and cap. A first blade defines a blade edge nearer the guard and a second blade defines a blade edge nearer the cap. The first blade has a cutter force greater than the cutter force of the second blade. In some instances the razors provide a comfortable shave having improved closeness.

A method for manufacturing a bandsaw blade provided at the top of the teeth with cutting tips made of a hard material, includes the steps of: offsetting to the left and right saw teeth constituting left and right offset teeth; forming the saw teeth constituting the left and right offset teeth to a smaller tooth height than that of the saw teeth constituting straight teeth; and grinding cutting tips provided to the top of the left and right offset teeth subsequent to the offsetting step, and machining the edge lines at the top of the left and right offset teeth so that the lines are orthogonal to the travel direction of a bandsaw blade and the cutting direction of the bandsaw blade.

A blade sharpening system using the interior surface of a grinding wheel against which a blade is drawn along its entire length for sharpening. The sharpening system includes a blade holding configuration having multiple hinged arms. A cam operating between two of the hinged arms serves to alter the angle of incidence between the blade and the grinding wheel as the blade is drawn across the grinding wheel. The result is that a wide variety of different blade configurations can be easily accommodated by the sharpening system.

A multi-rod hand-held sharpener includes a handle with an outer grip surface for a hand of a user, a first abrasive rod having a first outer abrasive surface with a first abrasiveness level, and a second abrasive rod having a second outer abrasive surface with a second abrasiveness level different from the first abrasiveness level. At least one guide surface extends toward the first sharpening surface at a selected guide angle non-orthogonal to the first sharpening surface. The user contactingly engages a side of the tool against the guide surface and a cutting edge of the tool against the first abrasive surface, and then advances the side of the tool away from the guide surface and the cutting edge against the first abrasive surface while maintaining the tool at the selected guide angle. An optional second guide adjacent the second abrasive surface at a different angle facilitates micro-beveling.

An elliptical climbing exercise apparatus includes a base frame, a swing unit including a pair of swing arms, a pedal unit including a pair of pedal shafts respectively pivotally connected to the swing arms, a damping unit including a rotating wheel with a spindle, a guiding unit including a pair of cranks respectively affixed to the two opposite ends of the spindle, a pair of rockers respectively pivotally connected to the cranks and a pair of links respectively pivotally connected to the rocker. Cooperation between the base frame, the swing unit, the pedal unit, the resistance unit and the guiding unit is used to achieve a training of the leg muscles.

An exercise device, comprising: more than one resistance adjusting inserts wherein said resistance adjusting inserts are selected to change the overall resistance a user exercises against; a chamber wherein one or more of said resistance adjusting inserts are capable of being inserted within said chamber; and an inlet to said chamber wherein the one or more of said resistance adjusting inserts are movable within the chamber by breath of a user. A method for exercising comprising: using an exercise device comprising a chamber capable of holding at least one resistance adjusting insert where the chamber has an inlet; selecting at least one resistance adjusting inserts from more than one resistance adjusting inserts; and, moving the selected inserts in the chamber by air pressure generated by a user directed through an inlet into the chamber.

In one example, a muscle exercise device includes a first arm, and a second arm rotatably connected to the first arm, and the second arm and first arm are movable to cooperatively define a recess. The muscle exercise device also includes a resistance element configured to reside in the recess and be compressed between the arms.

A multi-purpose balance exercise device designed to be used in multiple positions and for diverse exercises. For example, various embodiments allow for the multipurpose device to be use as an aerobic step device as well as the ability to easily adjust the device to various heights to easily decrease the level of difficulty of the device for use during various exercises. The balance exercise device can provide a polarity of handles and grab points both horizontally and vertically, which allow for an enhanced number of exercises or movements using either the top and/or bottom of the device. The balance exercise device includes a flexible bladder filled with air, other gases, or gels attached to a substantially rigid base. The base can include an interior within which features such as handles are disposed to provide a gripping or lifting exercise to which the balance exercise device can be used.

A stationary strength training equipment includes a frame assembly, a lockable bilateral user interface installed on the frame assembly, a balancing structure connected to the lockable bilateral user interface, a plurality of user selectable weights supported by the frame assembly and connected to the balancing structure, a load detecting strain gauge disposed on the user selectable weights to detect a weight of the user selectable weights being lifted, and an informing device connected to the lockable bilateral user interface to detect and show a warning signal to a user. The lockable bilateral user interface further includes a locking mechanism assembly and a central pivot assembly; the balancing structure is able to rotate along the central pivot assembly, and the locking mechanism assembly selectively restricts a rotation of the balancing structure.

An apparatus (100) for gait training has a movable base (200) comprising at least one drive unit (210) for moving the movable base, an arm arrangement (300) extending from the movable base, a weight support system (400) to enable a person to be at least partially suspended from above via said arm arrangement, a movement detector to detect a movement of the person and a control unit adapted to control said drive unit(s) in response to a movement of the person detected by the movement detector such that the movable base follows the person in a predetermined distance range and in a predetermined angular range with respect to a movement direction of the person.

A jaw-strengthening device has a first receiver configured to receive a row of teeth having first and second molar sections, the first receiver having a first air chamber within the receiver positioned in a first molar section, a second air chamber within the receiver positioned in a second molar section, and an egress valve, configured to permit egress of air and prevent ingress of air, in communication with the first and second air chambers, a second receiver configured to receive a second row of teeth, the second receiver having a third air chamber within the receiver positioned in a first molar section, a fourth air chamber within the receiver positioned in a second molar section, and an ingress valve in communication with the third and fourth air chambers, wherein the first and third air chambers, and separately the second and fourth air chambers, are in communication.

Apparatus (2) for exercising a person's calves (4) in two different ways, which apparatus (2) comprises a footrest (8), a kneerest (10), and a length of stretchable material (12) for extending between the footrest (8) and the kneerest (10), and the apparatus (2) being such that: (i) the length of stretchable material (12) is flat sided;(ii) the footrest (8) has roller means (14);(iii) the roller means (14) allows the length of stretchable material (12) to connect to the footrest (8) such that the flat sides of the length of stretchable material (12) slide over the roller means (16);(iv) the kneerest (10) has anchor means (16) for the length of stretchable material (12);(v) the anchor means (16) allows the length of stretchable material (12) to connect to the kneerest (10) such that the flat sides of the length of stretchable material (12) pass over the anchor means (16); and(vi) the footrest (8), the kneerest (10), and the length of flexible material (12) are separable from each other.

A multiple position locking handle for an exercise machine for that is movable into a plurality of different positions when unlocked and that is retained in a single secure position when locked. The multiple position locking handle for an exercise machine generally includes a tubular base having a lower end and an upper end, an elongated member extending through the opening of the upper end of the tubular base and extending downwardly through at least a portion of the tubular base, a handle extending outwardly from the elongated member at an angle, and a locking device. The elongated member is movable within the tubular base when the locking device is in the unlocked state and is substantially not movable within the tubular base when the locking device is in the locked state.

A core fitness system for efficiently exercising the core muscles of a persons body. The system involves working a user's core muscles by rotating the user's body while holding the body at an angle.

The invention provides an exercise device for a rotator cuff of a shoulder of a user comprising a container housing, wherein the container housing comprises a first container shell, wherein the first container shell comprises a first container shell exterior surface and a first container shell interior surface surrounding a first container shell void, wherein the first container shell interior surface forms a substantially spherical surface; a second container shell, wherein the second container shell comprises a second container shell exterior surface and a second container shell interior surface, wherein the second container shell interior surface surrounds the first container shell exterior surface whereby the first container shell is nested inside the second container shell; and a spherical ball positioned within the first container shell void; wherein when the exercise device is in use, movement and rotation of an arm of a user causes movement and rotation of the container housing and movement and rotation of the ball within the container housing in a direction that follows a circumference of the first container shell interior surface, thereby exercising the rotator cuff of the shoulder of the user.

A machine for exercising the rotator cuff muscles that is operable to individually and separately isolate and exercise each of the four rotator cuff muscles while the user is in a seated position. The exercise machine includes a plurality of structural elements including a main vertical beam and a base frame operable to be positioned on the ground, where the main beam extends vertically from the base frame. The machine includes a plurality of pulleys mounted to the structural elements and a plurality of exercise cables running through the pulleys, where handles are coupled to the exercise cables. A seat is mounted to the vertical beam and the handles are positioned relative thereto to allow the user to grasp the handles and perform the several exercises for each arm.

A layered exercise contact counter display tracking and showing repetitive contacts with the lens contact surface of a housing covering a sensor pad, which responds to contacts sending a signal to a powered circuit board and remote tracking devices to record and display the number of repetitive hits adapted for mounting on an exercise device or a support surface to encourage an exerciser to complete and exercise or contact event.

An exercise machine includes a motor that drives a belt to move, and an analysis system to collect a peak energy from the motor and to convert the peak energy into different user exercising data.

Systems and methods for fitness tracking are provided. An exercise apparatus is in networked communication with a fitness tracking computing system. The configuration and location of movable components of the exercise apparatus is determined based on sensors. This information is provided to the fitness tracking computing system via networked communication.

A portable paddleboard exercise apparatus having a balance platform, an elongated member, a paddle handle, and a number of resistance bands. The apparatus may further include a frame with one or more support members configured to support the balance platform. The balance platform includes an upper surface for a user to balance thereon. The elongated member extends from the balance platform. The resistance bands extend from a distal end of the elongated member to the paddle handle. A user may balance on the balance platform in one of a number of positions while pulling the paddle handle against a resistive force generated by the resistance bands.

Exercise equipment, particularly a linear movable structure and associated selectable elastic resistance bands with or without guide track members are designed to allow low-impact exercises for one or two persons at the same time while permitting either or both participants to remain stationary when utilizing the equipment.

An exercise machine rail system for improved exerciser mounting and dismounting, improved functional ergonomics, and reduced risk of exerciser injury when using an exercise machine. The exercise machine rail system generally includes either two rails in close relationship which are linked together via connectors or a singular rail. Bias members are disclosed as either extending along either outer side of the rails, internally to the rail, or underneath the rail. Due to the narrow nature of the rails used by the present invention, an exerciser is able to mount and dismount the exercise machine easily and efficiently.

A combination massage table with one or more resistance bands (hereinafter, a combination table) is disclosed. In some embodiments, the combination table may comprise: a massage table; the one or more resistance bands; and a means for attaching the one or more resistance bands to the massage table; such that a client using the combination table receives at least one improved health benefit as compared against massage therapy without any resistance band use. Furthermore, methods for using the combination table are disclosed. Such methods may comprise: preparing the combination table for use; preparing the client so the client is laying on top of an upper surface of the combination table; and massaging the client while the client at least intermittently engages one or more resistance bands that are attached to the combination table; wherein in the at least intermittent engagement of the one or more resistance bands while the client is being massaged results in the at least one improved health benefit to the client.

A trampoline comprises a mat, a frame, and a plurality of support rods connecting between the frame and the mat to hold the mat in tension above the frame, the support rods extending or bowing outwards from the frame and curving upwards from the frame towards the mat. Each of the support rods may have an associated shorter secondary support rod. The support rods may have a rectangular cross-section.