Abstract: A cutter formed by detachably attaching a replaceable blade to a cutter body. The cutter body can include a main body block and slide block. The main body block includes a main body supporting section supporting the replaceable blade back face, and a main body connecting section connecting with the replaceable blade from the front face side. The slide block includes a rear side supporting section supporting the replaceable blade back face, a slide connecting section connecting with and retracting the replaceable blade toward the rear side, and a back side protruding section protruding on the back side in a thickness direction. When attached, the replaceable blade elastically deforms to curve in the thickness direction, the slide block presses toward a main body block side in the thickness direction by elastic force of the replaceable blade, and the back side protruding section engages with a main body block engaged section.

Abstract: The utility knife device generally comprises a sheath, covering a portion of the user's hand and a blade housing which attach together at a connection point. The blade housing is made up of a casing which preferably encloses the user's index finger, a blade housed within the casing and a trigger which extends out of the casing and manipulates the blade. The blade is capable of extending outward from the casing being held in place for use. The blade is also capable of automatically retracting within the casing so that the blade is not exposed.

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 guarded surgical knife handle includes a lower handle portion, an upper handle postion, and a button. The lower handle portion includes a blade holder, a proximal pair of lateral shelves, and a distal pair of lateral shelves. The upper handle portion includes a guard portion, a proximal post between the proximal pair of shelves with a first widened post portion wider than the lateral spacing between the shelves, and a distal post between the distal pair of shelves with a second widened post portion wider than the lateral spacing between the shelves. The button has a button waist narrower than the second lateral spacing and a widened button portion below the button waist wider than the second lateral spacing. A bias member connected to the button and at least one of the handle portions provides an upward force on the button.

Abstract: A utility knife includes a handle, a blade assembly secured to the handle, a blade cover mechanically coupled to the handle facilitating manipulability of the blade cover to an extended position over the blade assembly, and a slider that is repositionable along the handle to release the blade cover from the extended position, the slider being pivotally coupled to the blade assembly.

Abstract: A cutting apparatus has a unidirectionally-locking blade cover that automatically snaps back over the exposed blade after each cut, and a dependent, index finger operated unlocking trigger.

Abstract: A cutter apparatus includes a housing and a blade holder coupled to the housing, wherein the housing includes a distal portion (e.g., a blade storage compartment) that is both slidably and pivotally coupled to portions of the housing and configured to serve as a cover for the blade holder. The cutter apparatus can also include a cover release device configured to facilitate repositioning the cover between a locked position at which the cover is secured to the housing and a released position at which at least a portion of the cover is free to pivotally reposition away from the housing providing access to the blade holder.

Abstract: A cutter apparatus includes a housing, multiple tools mechanically coupled to the housing, at least one of the tools including a cutting device, and a slider and lock wheel mechanically coupled to the housing and configured to selectively release only one of the tools at a time from being secured within the housing.

Abstract: A cutter apparatus includes a housing, a blade carrier configured to support a front blade, the blade carrier being coupled to and repositionable in relation to the housing, an auxiliary tool configured to be deployable from another portion of the housing, and a selector repositionable in relation to the housing and configured for mutually exclusively facilitating the user-controlled actions of setting a maximum blade depth to which the front blade is extendable from the housing and activating the auxiliary tool. The selector includes, for example, a biasing component for selectively engaging stop surfaces and a counter-biasing component configured to disengage the one or more biased engagement portions from the stop surfaces in response to a user of the cutter apparatus initiating an action of repositioning the selector along the path.

Abstract: A cutter apparatus includes a housing shaped to be hand-held, a blade holder configured to support a blade, and multiple actuators for extending the blade from the housing, the actuators including a safety actuator (e.g., a blade guard) that drives at least one of the other actuators while repositioning to extend the blade. The multiple actuators include, for example, a slider and a blade guard configured such that the slider when pushed forward repositions independently of the blade guard to extend the blade from the housing and such that the blade guard when pushed forward repositions the blade as the blade guard is deployed.

Abstract: A utility knife includes a handle, a blade carrier, and a blade depth adjustment assembly. The blade carrier is mechanically coupled to the handle and configured to support a blade. The blade depth adjustment assembly is mechanically coupled to the handle and configured to permit a user of the utility knife to reposition components of the blade depth adjustment assembly to select one of a plurality of blade depth positions which causes the blade carrier to be repositioned along the handle depending upon which of the blade depth positions is selected.

Abstract: A precision cutter is disclosed. The cutter is curvilinear in shape, and has an elongated handle with a blade projecting from the top end thereof, and a cap adapted to fit over the blade, the cap being so configured that when in place covering the blade, it provides the appearance of a unitary piece to the cutter. The handle has a weight positioned in it eccentric to the central axis thereof, so that when rolled on a flat surface the handle consistently returns to the same position relative to the flat surface.

Abstract: A scalpel blade protector comprises an inner housing attached to a scalpel handle, an outer housing and a blade guard slidably mounted between the inner and outer housings for movement between positions exposing and shielding the scalpel blade. The blade protector is attached to conventional scalpel handles. A first embodiment shows a blade protector for a flat scalpel handle. A second embodiment shows a blade protector for a round or hexagonal scalpel handle.

Abstract: A folding knife with a retractable clip is disclosed. The folding knife comprises at least two rigid plates housing at least one knife blade and the retractable clip. The retractable clip is slidably mounted between the two rigid plates and traverses a path between a retracted position and an extended position defined by a guide slot in a base portion of the clip. A guide pin intermediate the slot and between the plates limits the translational movement of the retractable clip such that its extension is optimal for affixing it onto clothing by means of an elongated member attached to the base portion, and its retraction within the housing space renders a smooth facing to the knife.

Abstract: A modular tool system includes a plate for carrying a tool, a top plate and a base plate. A pair of locking members is disposed at two opposite ends of the tool-carrying plate. Each lock member is rotatably mounted in the tool-carrying plate, and has an axis of rotation perpendicular the tool-carrying plate. Each locking member has a keyway for receiving and locking a corresponding key of the top plate, and a key for inserting and locking in a corresponding keyway of the base plate. Turning of the keys of the top plate relative to the keyways of the tool-carrying plate locks the top plate and the tool-carrying plate together, and further turning of the keys of the top plate turns the keys of the tool-carrying plate relative to the keyways of the base plate and locks the tool-carrying plate and the base plate together.

Abstract: A knife and sheath for housing the knife, the sheath including a light, an actuator for activating the light, and finger openings, with the knife being withdrawn from the sheath to permit the fingers of the user to be inserted through the finger receiving openings and enable a thumb of the user to be positioned on the actuator for selective activation and de-activation of the light emitting device.

Abstract: The present invention is directed to a hand-held instrument, which may comprise, in various exemplary embodiments thereof, a folding (manual, assisted opening, automatic, etc,) knife, a fixed blade knife, or any other hand-held tool comprising a handle, and at least one active region (e.g., a cutting, a saw blade, etc.), and which also advantageously comprises at least one novel user-operable protective element, that when placed, by the user, into an active position that is generally perpendicular to the handle of the instrument, is configured for protecting at least a portion of the user's hand while the instrument is held and/or utilized, and that when placed into a retracted position that is generally parallel to the handle of the instrument, streamlines the instruments longitudinal profile.

Abstract: A cutting tool including a housing provided with a compartment having an opening, a carrier disposed in the compartment and displaceable between extended and retracted positions, a spring for biasing the carrier in the retracted position, a mechanism for displacing the carrier in the extended position, a mechanism for releasably retaining the carrier in the extended position, and the carrier having a nesting surface for a blade whereby a blade nested thereon will project through the compartment opening when the carrier is in the extended position and will be disposed within such compartment when the carrier is in the retracted position.

Abstract: An improved cutting device including a mechanism for selectively guarding the edge of a cutting blade. According to various embodiments, a sliding mechanism is operatively connected to a blade guard, wherein the translational movement of the sliding mechanism causes a corresponding rotational movement of the blade guard. When the blade guard is in an extended position, the edge of the cutting blade is not exposed, thereby preventing a user from accidentally cut by the blade. Various embodiments also provide for an improved blade replacement system. According to various embodiments, a locking member is capable of lifting the cutting blade without the user having to touch the blade itself.

Abstract: A cutting apparatus has a unidirectionally-locking blade cover that automatically snaps back over the exposed blade after each cut, and a dependent, index finger operated unlocking trigger.

Abstract: A digital signal processor includes an up-sampling module that samples an input signal and generates up-sampling points. A natural sampling module includes a reference signal generation module that generates a reference signal. A crossing point detection module receives the up-sampling points and the reference signal and uses interpolation to detect intersection points of the input signal and the reference signal. The crossing point detection module determines values of the input signal at first and second evaluation times. The crossing point detection module estimates a current intersection point of the input signal and the reference signal as an intersection of the reference signal and a line that extends between first and second points on the input signal that correspond with the first and second evaluation times. A frequency of the reference signal is variable and a current switching period of the reference signal is not equal to a previous switching period.

Abstract: A utility knife includes a handle, a blade assembly secured to the handle, a blade cover mechanically coupled to the handle facilitating manipulability of the blade cover to an extended position over the blade assembly, and a slider that is repositionable along the handle to release the blade cover from the extended position, the slider being pivotally coupled to the blade assembly.

Abstract: A cutting apparatus has a unidirectionally-locking blade cover that automatically snaps back over the exposed blade after each cut, and a dependent, index finger operated unlocking trigger.

Abstract: A diver's knife that includes a casing with a bottom portion, a top half and a bottom half, a handle slot disposed on bottom portion of casing to allow a user to grasp diver's knife, a single-sided cutting blade to cut a line with a cutting edge with a top end and a blade aperture, with the single-sided cutting blade being sandwiched between top half and bottom half of casing. The diver's knife also includes a slot disposed on a side of casing to receive a line to be cut by an exposed single-sided cutting blade with cutting edge and an fastener to secure top half of casing, single-sided cutting blade and bottom half of casing together to form diver's knife. The diver's knife can also be double-sided to cut the line from both sides.

Abstract: An exchange blade knife includes a replaceable blade, a blade holder and a blade lock. The replaceable blade includes an opening adjacent to its base edge. The blade holder includes a blade recess for receiving the replaceable blade and a boss corresponding to the opening in the blade which projects from the surface of the blade recess. The boss has a low portion that is no thicker than the replaceable blade and a raised portion that extends above the surface of the replaceable blade. The blade lock pivots on the blade holder between an opened position for receiving the replaceable blade and a closed position for retaining the replaceable blade. The blade lock also includes an opening for receiving the boss of the blade holder.

Abstract: A pocket knife having at least one pull-out cutting tool or blade, provided on at least one side with a lateral covering covering said knife, and at least three blockable assembly axes which hold together the knife or the cutting tool in a pull-out or retracted position. A weighing element is arranged inside the pocket knife. Said element can be extracted about at least one of the axes or at least one other axis and/or is displaceably mounted during weighing. The weighing element is actively connected to a transmitting device in order to transmit the weight that is to be measured to a measuring sensor.

Abstract: A cutting apparatus has a unidirectionally-locking blade cover that automatically snaps back over the exposed blade after each cut, and a dependent, index finger operated unlocking trigger.

Abstract: A safety scalpel blade assembly adapted for attachment to a handle (12), the assembly comprising a scalpel blade (10) and guard (11) which extends at least about the cutting edge of the blade (10), the guard (11) having attachment means to lock the blade to the guard as the assembly is being attached to the handle and which releases the blade from the guard when the blade is attached to the blade carrier on the handle. Improvements include a removable safety tab (60) on the guard (11), means (68,71) to prevent the blade guard (11) lifting relative to the handle (12), a safely catch (75) to prevent excessive retraction of the guard (11) and location means (80,82) to locate the guard (11) in the extended and retracted positions.

Abstract: A scalpel is provided with a shield that is detachably connected to the handle of the scalpel and covers the blade of the scalpel. The scalpel includes a sliding assembly disposed on a portion of the handle of the scalpel. Movement of the sliding assembly causes the shield to rotate between a first position and a second position, wherein the blade is at least partially exposed.

Abstract: A cutting apparatus has a unidirectionally-locking blade cover that automatically snaps back over the exposed blade after each cut, and a dependent, index finger operated unlocking trigger.

Abstract: A retractable blade knife with an opening assisted mechanism has a handle, a blade mounted in the handle, an extending assembly mounted between the blade and the handle. At least one detent formed at a spine edge of the blade. The extending assembly has a positioning frame, a slider mounted beside the positioning frame and attached to the blade and a spring attached to the positioning frame and the slider. The positioning frame has a resilient rod selectively abutting the spine edge and a proximal end of the blade. The blade should be pushed manually a certain distance to allow the spine edge of the blade to push a rear end of the resilient rod outwardly. When the detent of the blade and a lock protrusion of the slider both depart from the resilient rod of the positioning frame, the spring may further pull the slider to move together with the blade to stretch out the blade.

Abstract: A edged tool with a protective cover is provided, in which there is no necessity for mounting a member for locking a protective cover on a handle main body as a separate member, the protective cover for protecting a blade body can be easily manipulated by one hand and also the blade body can be retained in an exposing state and in a covering state. A surgical scalpel as the protective cover-equipped edged tool is provided with a grip portion formed so as to hold the handle main body by one hand and a supporting portion integrally coupled to the grip portion to support the protective cover so as to slide freely on the outer periphery. A projection is formed on the outer periphery of the supporting portion. A pair of locking portions with which the projection makes an elastic engagement when the protective cover is placed selectively at the covering position or at the exposing position are mounted on the protective cover.

Abstract: A knife system for providing efficient replacement of a knife blade. The knife system generally includes a body, a lever pivotally connected to the body, a collet connected to the body, and a shaft connected between the lever and the collet. When the lever is in a closed position, the shaft applies tension to the collet resulting in frictional engagement with a blade within the collet. An illuminating unit is preferably positioned within the body directing light towards the blade within the collet to illuminate a work area.

Abstract: A cutting apparatus has a unidirectionally-locking blade cover that automatically snaps back over the exposed blade after each cut, and a dependent, index finger operated unlocking trigger.

Abstract: A guarded surgical knife handle includes a lower handle portion, an upper handle postion, and a button. The lower handle portion includes a blade holder, a proximal pair of lateral shelves, and a distal pair of lateral shelves. The upper handle portion includes a guard portion, a proximal post between the proximal pair of shelves with a first widened post portion wider than the lateral spacing between the shelves, and a distal post between the distal pair of shelves with a second widened post portion wider than the lateral spacing between the shelves. The button has a button waist narrower than the second lateral spacing and a widened button portion below the button waist wider than the second lateral spacing. A bias member connected to the button and at least one of the handle portions provides an upward force on the button.

Abstract: The present invention is a portable compact cutting wheel assembly designed to be easy and convenient to use for cutting food items. The cutting wheel assembly includes a handle, a rotatably attached cutting blade and a conformal blade cover that fits over the cutting blade and secures to the handle for clean storage.

Abstract: This invention provides a cutting tool, comprising: a housing; as well as the tool bit holder, which may rotate, fix and may be held in the housing. The tool bit holder has a tool bit holder main body top that lodges with the tool bit main body bottom to hold the removable bit. The bit forms specifically with the knife edge opposite one side which has at least one localization selector. In the tool bit holder, the main body member has a localization member which may move with the localization selector. The localization member: sets the position, and should set in the position so that the localization member coordinates with the localization selector. In the release position, the localization member is separated from the coordination to the release position at the localization selector. The bit disassembles conveniently and allows different positions and good utility.

Abstract: A folding knife having a finger guard extension mounted to the handle portion that is operatively configured to be positioned in a stored position when the knife is in a closed orientation. The finger guard is adapted to be withdrawn from the handle in an extended position when the blade is in an open position where in one form the finger guard is adapted to open the blade when a force is applied thereto.

Abstract: A folding knife has a handle and a blade. The blade is pivotally coupled to the handle. The handle includes a latch element, a resilient element and a turning element. An end of the resilient element is fixed into the handle. The latch element is pivotally coupled into the handle. An end of the latch element is extended to an end of the blade. Another end of the latch element presses against another end of the resilient element. The resilient element pushes the latch element to turn the blade out from the handle or store the blade completely into the handle. The turning element is pivotally coupled into the handle, such that when a force is exerted to push the latch element towards the resilient element to release the blade, the blade can be movably turned out from the handle or stored into the handle.

Abstract: A utility knife system for cutting objects The utility knife system has an external handle, a retractable sheath, a retracting mechanism, and an internal housing. The external handle has a sheath sliding track running longitudinally therein and a hinge. The retractable sheath has at least one protrusion that corresponds to the shape of the sheath sliding track, slides within the external handle. The retracting mechanism moves the retractable sheath and locks it in a desired position. The internal housing is received within the retractable sheath and the external handle, and has a hinge attachable to the hinge of the external handle, and a blade retention end opposite of the hinge. The blade retention end receives a cutting blade.

Abstract: A knife sheath is provided. In various embodiments, the knife sheath includes an automatic swing-away retention strap that includes at least one biasing device. The biasing device is adapted to automatically pivot a detachable distal end of the retention strap about a fixed proximal end of the retention strap to swing the retention strap from a fastened position to an open position.

Abstract: The Multi-Purpose Utensil is kitchen tool that has a plurality of functions such as a peeler, julienne, sharpener, pitter, among others.

Abstract: A knife assembly includes a handle having a blade cavity and a deployment slot extending longitudinally in the handle. A blade is slidably positioned within the blade cavity, and is slidable between a retracted position, in which the blade is wholly enclosed within the handle, and an extended position, in which a portion of the blade extends from a first end of the handle. A clip assembly includes a pin configured to releasably engage a tang portion of the blade in the blade cavity via the deployment slot. While the pin engages the blade, it can traverse the deployment slot from a first end to a second end to move the blade between the extended and retracted positions. The handle is configured to hang from the pin at the second end of the deployment slot while the blade is in the retracted position.

Abstract: A cutting tool configured to cut packaging. The tool includes a handle and a blade having a cutting portion. The blade is affixed to the handle with the cutting portion extending outwardly from the handle. The cutting portion of the blade resides inside a retractable sheath that is movable between a blade guarding position and a blade exposing position. The sheath is coupled to the handle by a biasing assembly that biases the sheath into the blade guarding position whereat the cutting portion of the blade is received completely inside the sheath. The sheath retracts to the blade exposing position when the sheath is pressed against the packaging with sufficient force to overcome the biasing force applied thereto by the biasing assembly. When the sheath is retracted, the cutting portion of the blade is placed into contact with the packaging against which the sheath is pressed.

Abstract: A folding knife having a finger guard extension mounted to the handle portion that is adapted to be positioned in a stored position when the knife is in a closed orientation. The finger guard is adapted to be withdrawn from the handle in an extended position when the blade is in an open position.

Abstract: A folding knife having a blade-opening mechanism incorporated in the handle of the knife. The blade-opening mechanism in one form can be used to pivot the blade from the closed position to the open position by manually applying pressure to the blade-opening mechanism rather than to a portion of the blade. The blade-opening mechanism in one embodiment also can be adapted to function as a closing mechanism for pivoting the blade closed without applying pressure to the blade. In particular embodiments, the handle desirably includes a pivotable side portion that is coupled to the tang portion of the blade such that manually pivoting the side portion is effective to cause pivoting movement of the blade.

Abstract: A cutting apparatus has a unidirectionally-locking blade cover that automatically snaps back over the exposed blade after each cut, and a dependent, index finger operated unlocking trigger.

Abstract: A knife has plastic molded body with a handle and distal portion formed with finger-like extensions that hold a blade with its cutting edges exposed. The extensions form an atraumatic profile with the blade to facilitate cutting of an object by the cutting edge. The atraumatic profile extends along a longitudinal direction of the knife and/or a lateral direction of the knife. In one embodiment, the extensions are tapered in both a longitudinal and a lateral direction of the knife, such that there is a smooth transitional region where the extensions and the blade meet. The knife includes a sliding region proximal the cutting edge of the blade which facilitates a swift cutting motion into dough where the extensions follow and functions as part of the blade. The knife also includes a protective cover that is detachable from the knife, or is movable between a position that covers the blade and a position that exposes the blade.

Abstract: A safe knife sheath comprising a sheath body is mounted inside the sheath body movable in a sliding motion and a movable blade support. The front part of the sheath body has a push button, the lower part of which is connected to a positioning element. A positioning groove corresponding to the positioning element is disposed in the lower part of the blade support. A positioning channel is disposed inside the sheath body on the top. A positioning lobe corresponding to the positioning channel is disposed on the top of the blade support. A first reset spring is connected to the top of the push button at one end, and the other end of which is fixed in the upper end of the sheath body. A trapezoidal piece is disposed in the back of the blade support. A second reset spring is disposed on the lower side of the trapezoidal piece. One end of the second reset spring is fixed in the lower end of the sheath body and the other end is fixed on the inner side of the sheath body.

Abstract: A surgical scalpel includes an elongate handle defining a longitudinal axis and having a proximal end and a distal end. The scalpel has a cartridge removably mounted to the handle that has a blade holder with a proximal end and a distal end. There is a blade fixedly attached to blade holder disposed so that the blade projects distally outwardly when the cartridge is mounted on the handle. The cartridge also has a shield with a proximal end, a distal end and a bottom mounted onto the blade holder. The shield is slidably movable between a distal position where the shield substantially prevents inadvertent access to the blade and a proximal position where the shield substantially surrounds a portion of the handle and the blade is exposed for use. The cartridge is releasably mountable to the handle and has elements for substantially preventing movement of the shield with respect to the blade holder unless the cartridge is mounted on the handle.