Abstract: A utility knife has a housing in which a particle flow cross section is substantially constant or increases in a flow direction of particles from an inlet of the housing into an interior of the housing at an end of the housing to an outlet of the housing. A blade assembly has a blade with a cutting edge and is movable relative to the housing between a stowed position and an operating position for a cutting operation. A first actuating part and a second actuating part mounted movable relative to the first actuating part move of the blade assembly between the stowed and operating positions. First and second slotted links form a four-point linkage with the first and second actuating parts.

Abstract: A roasting assembly is presented herein, configured to accept a removable food support. The assembly includes an elongated shaft, a handle, and a socket. The elongated shaft includes a first end and a second end. The handle is coupled the first end of the elongated shaft. The socket is coupled to the second end of the elongated shaft and comprises a hollow portion axially opposite the elongated shaft. The hollow portion of the socket accepts a removable food support.

Abstract: A hanger for suspending a chainsaw in a display is provided. The display may include a bar assembly that includes two parallel bars that project substantially parallel to each other. The hanger may include a first interface portion disposed at a first end of the body, and the first interface portion may include a first aperture and a second aperture. The hanger may additionally include a second interface portion disposed proximate to a second end, and a portion of the first face of the body may extend along a guide bar of the chainsaw. The second interface portion may align with a receiving orifice formed in the guide bar to enable a releasable fastener to operably couple the guide bar to the hanger. The first and second apertures may be configured to slidingly engage with the bars of the bar assembly to suspend the chainsaw from the bar assembly.

Abstract: A protective device and a method of transmitting an alert from the device, in which the protective device is handheld and includes a flexible sheath disposed between an upper member and a lower member. When the device is compressed, elongated defensive components protrude through openings in the upper member. In some cases, the upper member also includes protruding portions extending upward from the upper member and/or an arm portion extending outward to a side of the device. A signal alert may be automatically transmitted upon device compression.

Abstract: A razor handle for a razor cartridge is provided. The handle comprises a head, a body, a cover layer, and a clip member. The head has a cartridge engaging end and an attachment end. The body has a front end and a rear end and comprises a first shell and a second shell that are releasably coupled together. The front end is coupled with the attachment end. The cover layer at least partially surrounds the body. The clip member is coupled with the first shell and the second shell at the rear end of the body such that the first and second shells are held together at least partially by the clip member. The clip member has a plurality of features which are coupled to a plurality of features on the body. These are retention features such as recesses or projections.

Abstract: A throwing toy that can simulate the throwing of a weapon. The throwing toy has a head and a handle that are molded from a soft polymeric foam. Reinforcement elements can be molded into the foam to provide structural integrity. The head of the toy has a face surface, a rear surface, a top surface, and a bottom surface. The handle extends from the bottom surface of the head. When the throwing toy is thrown toward a target, one of the surfaces of the head is likely to impact the target. Contact connectors, such as suction cups, are affixed to at least one of the surfaces of the head. The contact connectors are set at different positions and preferably at different angles to provide contact attachments across a wide range of contact angles.

Abstract: The present invention generally relates to a safety cutter. Specifically, embodiments of the present invention relate to a compact safety cutter apparatus with a retractable blade guard. Embodiments of the safety cutter apparatus are further comprised of an automatic blade guard release mechanism.

Abstract: A cutting device is disclosed. The cutting device has a housing and a carriage that is movably disposed in the housing, the carriage being movable between a retracted position and an extended position. The cutting device also has a cutting member that is removably disposable in the carriage and a cover member that is removably attachable to the housing. The housing has a locking member. When the carriage is in the extended position and the cover member is attached to the housing, the locking member locks the cover member to the housing. When the cutting member is disposed in the carriage in the extended position, the cutting member is retained in the housing by the locked cover member.

Abstract: A cord that has been previously affixed around an annulus can be fastened with a fastener that is movable from a first state in which the cord is free to slide to a second state in which the cord is locked in place. After the fastener is moved to the second state, a cutting element with a slit shaped distal portion oriented in the distal-to-proximal direction with sharp edges slides with respect to a shelf and cuts off portions of the cord that are proximal with respect to the two locked parts.

Abstract: A self-defense weapon for women and others, comprising a lightweight, portable single or multi-bladed weapon adapted to be held in the hand and when activated by squeezing, one or more blades are exposed outwardly between the fingers. When the hand is relaxed, the weapon is deactivated, and the blades retract into the body of the weapon (sheath) protecting the user, so the weapon may be safely carried in the user's pocket or purse.

Abstract: An out the front (OTF) knife, including a handle, a blade slider mechanism, and a blade. The blade slider mechanism including: a liner having a longitudinal central channel and a first outer surface and a second outer surface opposite the first surface; a tang portion of the blade configured to ride along the first outer surface; and a slider coupled to the tang and having a portion configured to travel in the central channel of the liner and one or more portions configured to ride along the second outer surface, and wherein the liner is slideably captured between tang and the slider.

Abstract: A trigger knife, having a knife body, a knife rack, a blade, a resilient piece, a trigger, a transmission mechanism and a blocking piece; the resilient piece provides resilient force to retract the blade; the trigger is partially exposed from the knife body; the transmission mechanism has first and second gear racks, and first and second gears; the first gear and the second gear are connected to the knife body; the first gear rack is provided on the trigger and engages with the first gear; the second gear rack is provided on the knife rack and engages with the second gear; the knife rack is provided with a groove; the groove extends in the same direction along which the knife rack extends; when the blade is extended to a desired position, the blocking piece abuts against a wall surface of the groove.

Abstract: Devices, apparatus, and methods of using a modified scalpel tool that is removable from a polyurethane mated sheath for use in carpal tunnel surgeries and the like. The modified scalpel tool has an elongated stem with a flat blade at the distal end and an elongated handle at the proximal end. The sheath has a cavity for allowing the elongated blade to be inserted therein, two slots to receive two metal studs and a handle at its proximal end. The flat blade tool when combined (mated) with the polyurethane sheath produces a stable configuration that allows motion in only one rotational plane and with an arc of 90-95 degrees.

Abstract: A saw system capable of cutting through a workpiece in one stroke is provided. The saw system includes a base, a turntable mounted on the base for rotation about a vertical axis, a support structure defining a cutting axis and fixedly attached to the turntable, and an elongated blade including a cutting edge. The turntable has a substantially planar support surface for supporting a workpiece. The support structure includes a pair of parallel sliding members, wherein the sliding members are disposed in a direction substantially parallel to the cutting axis. The elongated blade is spaced apart from the sliding members and is movable along the sliding members. The cutting edge includes a proximal end and a distal end, wherein an angle between an imaginary line connecting the distal end of the cutting edge to the proximal end thereof and its projection onto the turntable is an acute angle.

Abstract: A tool for cutting a tie wrap bound about a wire bundle. The tool includes a body portion having a generally disc-shaped cutter and cutting edge. A shield covers one side of the cutter and defines first and second shield slots in communication with the cutting edge. A housing pivotally connected to the body portion covers the other side of the cutter and defines first and second housing slots that communicate with the cutting edge. The housing pivots between first, second, and third positions. In the first position, the first housing slot communicates with the first shield slot to expose the cutting edge for cutting purposes. In the second position, the first housing slot is out of communication with the first shield slot, thereby covering the cutting edge. And, in the third position, the second housing slot communicates with the second shield slot to expose the cutting edge.

Abstract: A sheath and knife separation control structure includes a sheath formed of a first sheath shell and a second sheath shell and including a knife blade accommodation chamber and a stop block, a knife having a knife blade accommodated in the knife blade accommodation chamber and a stop portion stoppable by the stop block, and a clamping control unit including a clamp pivotally connected to the sheath and a first clamping portion and a second clamping portion adapted for clamping the first sheath shell and second sheath shell of the sheath such that the stop block of the sheath is stopped against the stop portion to lock the knife to the sheath. The stop portion is movable to push away the stop block for allowing separation of the knife from the sheath when the clamping control unit is unclamped from the sheath.

Abstract: Contemplated tool and tool cartridge assemblies are provided that include at least one tool component and a movable cover. The movable cover has at least one guard portion that moves to cover or expose at least one tool component to protect a user from injury. Contemplated movable covers could be biased to cover tool components, and can be moved by a user or work piece as needed.

Abstract: Aspects of the present disclosure are presented for a surgical instrument for cutting and sealing tissue. In some embodiments, the surgical instrument includes a handle assembly, a shaft, and an end effector. The end effector may include: a blade that vibrates at an ultrasonic frequency, a shielded portion enclosing a back edge of the blade, a high-friction surface coupled to the shielded portion and positioned between the shielded portion and the back edge of the blade. A space is defined between the high-friction surface and the back edge of the blade when the end effector is in a cutting configuration. In a sealing configuration, the high-friction surface contacts the back edge of the blade, which generates heat based on ultrasonic vibrations of the blade rubbing against the high-friction surface. The shielded portion can coagulate bleeding tissue based on heat transfer from the high-friction surface to the shielded portion.

Abstract: An adjustable shimable indexable shear tip assembly for a distal end tang of a heavy duty demolition shear having a upper movable shear jaw with a tang that has side faces with apertures therethrough, a top seat, a rear seat and a bottom seat. The adjustable shimable shear tip assembly has a two-sided shear tip section with a sidewall and a bottom wall that is adapted to be seated on one of the side tang faces, the top seat, the rear seat and the bottom seat. The bottom wall is formed with the sidewall at a shear edge and is adapted to be seated on the tang bottom seat with a leading shear punching edge. A side plate is provided and adapted to be seated on the other tang side face, the top seat, the rear seat with another shear edge along the bottom wall. The side plate has apertures therethrough alignable with the sidewall apertures and the tang apertures to secure the sidewall, lower wall and access plate to the tang.

Abstract: In combination: a) a cutting blade assembly having a frame and a first cutting blade member with a first cutting edge portion configured to cause relative movement between components on the cutting blade assembly whereby the at least first cutting edge portion effects severance of an object; and b) a protective sheath. The protective sheath can be moved relative to the cutting blade assembly between: a) a first separated position; and b) an assembled position. The protective sheath frictionally engages the cutting blade assembly to thereby be maintained in the assembled position. The protective sheath has at least one component that projects away from the cutting blade assembly and has oppositely facing surfaces that can be grasped between two fingers on a user's one hand to facilitate repositioning of the protective sheath.

Abstract: A cutter includes a handle, a cassette and a sliding element. The handle includes a slot in an end and two grooves in two opposite internal faces. The cassette includes two bosses and a catch. The bosses are inserted in the grooves to allow the cassette to translate and pivot. The catch is formed on the cassette. The sliding element includes a fin, and is movable in the handle between a rear position and a front position. In the rear position, the fin is separated from the catch and the cassette is far from the slot. In the front position, the fin is in contact with the catch and the cassette is located near the slot. The catch is abutted against the fin so that the cassette is moved forward in the handle while the sliding element is moved to the front position from the rear position.

Abstract: A reusable locking surgical scalpel with a housing, reciprocator assembly carrying a blade and an end cap. The reciprocator assembly includes a slider positioned outside the housing and wings that flex inward against the housing inner track. The reciprocator assembly and housing include locking members that cooperate with one another to maintain the blade in a cutting position forward of the housing front end. The wings may engage openings in the housing to releasably maintain the reciprocator assembly in an intermediate position rearward of the cutting position with the blade concealed within the housing. The end cap includes a locking member that engages the reciprocator assembly in a permanent locked position rearward of the intermediate position.

Abstract: The disclosed technology generally regards a chainsaw guard mountable on a chainsaw having a motor powerhead housing, a drive motor contained in the housing, a saw chain guide bar mounted on the housing, and a saw cutter chain driven by the drive motor and carried on the saw chain guide bar, the chainsaw guard forming a physical barrier that limits access to the saw cutter chain when the chainsaw guard is mounted on the powerhead housing. The chainsaw guard includes a bracket member mountable to a chainsaw motor powerhead housing, and a retractable member movably engaged with the bracket member and designed and configured to sheathe the saw chain guide bar and saw cutter chain of the chainsaw when the chainsaw guard is mounted on a chainsaw.

Abstract: A utility knife configured with a retractable cutting blade that is extended and retracted by a blade actuation mechanism. The blade actuation mechanism includes a slider button assembly and a blade carriage assembly that are operably connected in variety of configurations, including a configuration with a rack-and-pinion arrangement between the slider button assembly and the blade carriage assembly. The rack-and-pinion blade actuation mechanism is configured to automatically retract the cutting blade as the cutting blade is lifted from the cutting surface.

Abstract: A scraper having an utility knife blade with an exposed elongate scraping edge wherein the entire edge is exposed and usable by a person using the scraper. The scraper has two parts joined by a hinge and held together during use by a pair of opposed magnets. The magnets also securely hold the blade in the body during use.

Abstract: A lancing device has a charging mechanism that operates to convert an external push action by a user to an internal pull action that retracts and charges a lancet for use in a lancing stroke. In some embodiments, the charging mechanism includes a user-actuated charging push-button, a reverse charging member coupled to a lancet carrier, and a reverse-motion conversion member coupled therebetween. Depressing the user-actuated member in a first longitudinal direction causes transverse movement of the conversion member, which in turn causes longitudinal retraction of the reverse charging member and the lancet carrier coupled thereto in a second longitudinal direction opposite the first direction, thereby charging a drive mechanism of the lancing device. In other embodiments, a rack-and-pinion gear mechanism provides the same push-to-pull functionality.

Abstract: Described are implants, tools, and methods useful for treating pelvic conditions such as prolapse, by placing an implant to support pelvic tissue, the implants, tools, and methods involving one or more of an insertion tool that works in coordination with a sheath, adjusting engagements, specific implants and pieces of implants, placement of implants at locations within the pelvic region, and insertion, adjusting, and grommet management tools.

Abstract: An adjusting and cutting tool including a distal end engageable with an elongate portion of an implantable article to facilitate manipulation of the elongate portion relative to a support portion of the implantable article and to facilitate cutting of the elongate portion. Also included is method of treating vaginal prolapse, the method including the steps of providing a multi-piece implantable article having at least one extension portion piece and a support portion piece, placing the support portion piece in contact with vaginal tissue, placing at least one extension portion piece in contact with tissue of a component of sacral anatomy, adjusting a position of the at least one extension portion piece relative to the support portion piece using a adjusting and cutting tool, and cutting the at least one extension portion with the adjusting and cutting tool.

Abstract: The present invention generally relates to a pocket cutter. Specifically, embodiments of the present invention relate to a pocket cutter apparatus with a retractable blade. Embodiments of the pocket cutter apparatus are further comprised of a thumb slider switch.

Abstract: A utility knife has a housing, a blade support adapted to carry a blade and shiftable in the housing between a cutting position in which the blade projects from the housing and a safety position in which the blade is retracted into the housing, and a handle pivotal on the housing from a starting position in a first direction into an open position in which the blade in the support can be replaced and from the starting position in a second direction opposite the first direction into an active position operatively engaging the blade support and displacing same into the cutting position. An actuation element is movable on the housing between a first position blocking movement of the handle into the open position and a second position blocking movement of the support into the cutting position.

Abstract: A safety scalpel is made of a blade shield, blade, blade holder and handle. The blade holder is located in the front portion of the handle and the blade holder and handle are of integral connection structure or separate plug type connection structure. The blade is fixed in the front portion of the blade holder and the blade shield is slidably mounted on the blade holder, wherein: the blade holder is provided with a first sliding channel and the first sliding channel is provided with a first front locking channel at its front end. A deadlock channel is set in front of the first front locking channel. The blade shield may be moved further forward after use to make the first protrusion of blade shield fall in deadlock channel to enter the deadlocking state. The construction thoroughly eliminates the safety problem of reusing scalpel.

Abstract: An ergonomically balanced safety scalpel that includes a pair of matched handle halves slidingly cooperative into a closed position and an open position. When in use, the handle halves are slidingly positioned in the closed position to expose the blade. The handle halves are slidingly repositioned relative to each other into the open position, when the safety scalpel is not in use, to extend one handle half relative to the other handle half whereby the blade is shielded therebetween.

Abstract: An improved multi-tool assembly which includes a housing that extends between opposing first and second longitudinal ends is provided. The multi-tool assembly further includes a blade which is partially disposed within the housing and which projects out of the first longitudinal end of the housing. The housing has a slot which opens to the second longitudinal end of the housing and at least one tool engaging element disposed at least partially within the slot of releasably securing a tool in the slot at the second longitudinal end of the housing such that the tool projects out of the second longitudinal end of the housing.

Abstract: A cutter knife body having a grip portion, the grip portion including a trigger lever, a cutting blade provided on an end of the cutter knife body, a pin rotatably supporting the cutting blade in the cutter knife body, a locking member placed in an opening formed in the cutter knife body, and a pair of cutting blade protector flanges, each protector flange being disposed on a side of the cutting blade, each cutting blade protector flanges having an outward protrusion from a surface of the flange, the grip type cutter knife including a pair of springs located between the pin and each of the outward protrusion from the flange surface, the pair of flanges being slidably supported in the cutter knife body by the pin and the pair of springs.

Abstract: The device discloses a thrusting knife of improved design which provides for an angled handle to allow more natural thrusting movements in hand to hand combat situations. The knife is comprised of a pistol grip-like handle which is more natural for a user to hold and provide a striking action with more natural wrist position when in use. The invention is more readily adaptable by individuals already trained in fist fighting tactical pistol drawing and placement or other self defense or combat arts. An index finger opening at the interface of the pistol grip and blade provide for improved control. An alternate embodiment is configured for use with a gloved hand.

Abstract: A folding tool such as a knife includes first and second spaced apart sidewalls with a blade pivotally attached to both sidewalls with a self-interlocking pivot pin. An opening in one sidewall includes a first, larger portion that receives an end of the pivot pin, and a smaller cylindrical opening that communicates with the larger portion through a slot. The end of the pivot pin slides through the slot and the sidewalls are rotated relative to one another to interlock the sidewalls. The knife may be easily assembled and disassembled without tools.

Abstract: A surgical scalpel is presented which combines the attributes of cost-effectiveness in design while being ambidextrous and autoclavable. The design of the device affords left handed or right handed medical personnel with the feel, weight and balance of the original metal unguarded scalpel, while maintaining safety through the shielding of the blade during non-use and the ability to dispose of the blade in a safe controlled manner without having to place ones hands near the unguarded sharp. Surgeons of either dexterity are able to learn and operate using similar techniques and instruments heretofore not available to them. No longer must a left handed surgeon be forced into the right handed world to perform surgery. The device is designed to use existing styles of blades currently available without needing costly inventories of specially created blades for the multitude of other such devices on the market.

Abstract: A pocket cutter knife with a retractable cutting blade that is operated via a blade control unit. The blade control unit includes a thumb slider switch, a blade carrier, and a tension component that are operably connected to extend and retract a cutting blade that is held by the blade carrier. The pocket cutter may also include a magnet retained within the body shell of the pocket cutter.

Abstract: A tool for cutting a tie wrap bound about a wire bundle. The tool includes a body portion having a generally disc-shaped cutter and cutting edge. A shield covers one side of the cutter and defines first and second shield slots in communication with the cutting edge. A housing pivotally connected to the body portion covers the other side of the cutter and defines first and second housing slots that communicate with the cutting edge. The housing pivots between first, second, and third positions. In the first position, the first housing slot communicates with the first shield slot to expose the cutting edge for cutting purposes. In the second position, the first housing slot is out of communication with the first shield slot, thereby covering the cutting edge. And, in the third position, the second housing slot communicates with the second shield slot to expose the cutting edge.

Abstract: A tissue cutter includes a housing, a blade, a pivot, and a blade spring. The housing is shaped so as to define a channel that has proximal and distal openings and a central longitudinal axis, and is shaped for slidable disposition therein of a hollow tubular element having a tapered distal portion. The blade which extends alongside the central longitudinal axis, and defines a sharp cutting surface that reaches a distal-most point of the blade and faces away from the central longitudinal axis. The pivot couples the blade to the housing such that the blade is rotatable with respect to the housing around a pivot point of the blade. The blade spring is arranged to apply a force to the blade that pushes a distal portion of the blade against the tapered distal portion of the hollow tubular element when the blade is positioned alongside the tapered distal portion.

Abstract: A cutter system includes a cutter and a holster. The cutter includes a housing with two recessed portions on opposite sides thereof, the cutter being adapted to support a blade and to facilitate selectively extending the blade from or retracting the blade into the housing. The holster is shaped to receive the cutter in two different orientations corresponding to left- and right-handed use, respectively, the holster including an interior surface formed with protrusions on opposites sides thereof, the protrusions each being sized to fit into either of the recessed portions.

Abstract: A tool, such as a multipurpose tool, is provided that is designed to receive a separate tool member configured to be installed after assembly of the tool. In this regard, the tool may have a retention mechanism configured to accept a separate tool member. A method of installing a tool member onto a tool is also provided. Also provided is a tool that includes a release mechanism to allow tool members to fold into the tool whereby the release mechanism is actuatable by tabs positioned on the sides of the handles outside of the path of travel of the tool member.

Abstract: A hand tool comprising a body with a first end and a second end, a striking portion disposed at the first end of the body, a hand grip disposed about a portion of the body, the hand grip defining a first elongated recess, and a cutting device removable received in the first elongated recess of the hand grip.

Abstract: The invention relates to a blade for cutting food products, in particular sausages, comprising a cutter having two partial cutters disposed tapered toward each other in a curved surface. The invention further relates to a cutting device for cutting food products, having a blade and having a holder on which the blade is rotatably disposed. The cutting device is designed so that an end piece can be sliced off of a product, the longitudinal axis thereof being oriented substantially perpendicular to the axis of rotation of the blade, by a rotary motion of the blade. The invention further relates to a method for processing a food product.

Abstract: The application relates to a chainsaw system and chain guard for a chainsaw with interchangeable cutting attachments of different lengths. The cutting attachments have cutting chains, and the chain guard includes an insertion opening for inserting a cutting attachment, at least two side walls for covering lateral surfaces of the cutting attachment, a front end opposite the insertion opening, a first latching depression formed in at least one side wall, and a second latching depression formed in at least one side wall at a distance closer toward the insertion opening with respect to the first latching depression. The first latching depression and the second latching depression each include an arcuate latching surface for latching in a form-fitting manner with a cutting chain of the cutting attachment, such that the latching is active in the direction of a longitudinal axis of the chain guard.

Abstract: A dive knife with two elastic buckles at two lateral sides includes a handle having a long groove therein; a buckle; each of a right side and a left side of the buckle having an upward elastic key; each elastic key extending upwards and being biforked at an upper end thereof so as to form with two claws; one claw near the body being as a hooking claw and another claw far away from the body being as a press key; a knife; a retaining set installed to the inner side of the rear cover; a front end of each left and right side of the lower retainer is extended with an elastic hook; and wherein in assembly, the buckle is received into the groove of the handle, the elastic hook will hook with the hooking claw of the elastic key of the buckle.

Abstract: A scalpel handle for holding a blade having a cutting edge includes a handle member and a blade shield for covering the blade cutting edge. The blade shield is connected to the handle member for pivotal movement relative thereto between a blade-covering condition and an out-of-the-way condition, and a movable shield latch mechanism is capable of releasably locking the blade shield in its blade-covering condition. A finger-operable actuator mechanism is mounted upon the handle member for movement between first and second conditions, and a spring is interposed between the actuator mechanism and the handle member. During a first phase of movement of the actuator mechanism from its first to its second condition, the shield latch mechanism unlocks the blade shield from its locked blade-covering condition, and during a second phase of movement, the blade shield is moved from its blade-covering condition to its out-of-the-way condition.

Abstract: A guarded surgical knife handle includes a handle portion with a blade holder, a chamber within the handle portion, and a slot. The guarded surgical knife handle also includes a guard having an open distal end slidably mounted within the handle portion that can slide longitudinally between an unguarded position and a guarded position. The guard is sized to surround the blade in the guarded position. The guarded surgical knife handle also includes a latch that latches the guard when the guard is slid into the guarded position and a first button that disengages the latch. The guarded surgical knife handle includes a bias member that forces the guard in a proximal direction to an unguarded position when the latch is disengaged along with a second button extending through the slot used to slide the guard in a distal direction into the guarded position.

Abstract: A dive knife with two elastic buckles at two lateral sides includes a handle having a long groove therein; a buckle; each of a right side and a left side of the buckle having an upward elastic key; each elastic key extending upwards and being biforked at an upper end thereof so as to form with two claws; one claw near the body being as a hooking claw and another claw far away from the body being as a press key; a knife; a retaining set installed to the inner side of the rear cover; a front end of each left and right side of the lower retainer is extended with an elastic hook; and wherein in assembly, the buckle is received into the groove of the handle, the elastic hook will hook with the hooking claw of the elastic key of the buckle.

Abstract: A surgical safety scalpel having a handle, a blade fixed at one end of the handle, and a sheath slidably and inseparably attached to the handle. The sheath slides lengthways along the handle alternating between a blocking position in which the sheath covers the blade, and a ready position in which the blade is exposed and the sheath forms part of the grip. An aperture in the sheath and two stoppers on the handle form an interlocking mechanism for maintaining the sheath in the blocking position, and a third stopper on the handle prevents the sheath from sliding off the handle in the ready position.