Abstract: A utility knife includes a handle base and a neck connected to the handle base for pivotal movement relative to the handle base between a closed position and an open position. The knife also includes a utility blade holder slidingly carried by the neck for sliding movement relative to the neck between a retracted position and an extended position. A utility blade is carried by the blade holder such that movement of the utility blade holder between its extended and retracted positions moves the utility blade between an exposed position in which a cutting edge of the blade is exposed, and a protected position in which the cutting edge of the blade is protected by the neck.

Abstract: The present invention discloses a trigger knife with a fixable blade position, including a knife shell, a blade holder, a blade, a first elastic member, a trigger, and a limiting mechanism. The blade holder is capable of moving close to or away from the blade outlet in the inner cavity together with the blade. The trigger is rotatably mounted on the knife shell and configured to drive the blade to extend out of the inner cavity. The first elastic member is configured to drive the blade to be retracted into the inner cavity. The limiting mechanism is configured to limit a rotation angle of the trigger, so that the blade can be fixed to at least one preset position in the inner cavity. In the present invention, the blade can be effectively fixed to the at least one preset position in the inner cavity, which can meet usage requirements.

Abstract: A utility knife includes a housing and a slidable blade assembly configured to selectively receive a removable blade in a blade channel thereof and to slide relative to the housing, such that the removable blade is stored within the housing when the slidable blade assembly is in a retracted position, and a portion of the blade extends outwardly from the housing when the slidable blade assembly is in an extended position. The slidable blade assembly comprises a plurality of notch engaging protrusions configured to move to selectively enter the blade channel to engage one or more notches of the removable blade. The housing comprises a blade release actuator configured to move or permit movement of the plurality of notch engaging protrusions out of the blade channel to permit removal of the removable blade from the slidable blade assembly.

Abstract: The invention provides a tissue cutting device comprising a handle, a first blade. and a second blade. The second blade is coupled to the handle. The second blade is rotatable relative to the first blade such that the second blade is configured to rotate between a first position and a second position. The second blade is in a same plane as the first blade when the second blade is in the first position. The second blade is rotated into a different plane from the first blade when the second blade is rotated from the first position toward the second position.

Abstract: A retractable surgical blade includes a handle defining a channel and a surgical blade member. The surgical blade member includes a body to which is secured a surgical blade. The body has a portion which engages the channel so that the surgical blade member can move from a cutting position in which the surgical blade projects from the handle and can be employed in a surgical procedure to a retracted position in which the surgical blade is disposed in the channel. When in the retracted position, the surgical blade is unable to cut or stab persons associated with the surgical procedure. The device further includes cooperating locking members on the handle and the body to position the surgical blade member in the desired position. An associated method of performing a surgical procedure is also disclosed.

Abstract: A lockable tool with a sliding scale release is formed with a frame and a tool coupled to the frame with a locking mechanism to lock the tool into an extended or retracted configuration. A release mechanism is attached a scale on the side of the frame. The scale is coupled to the frame. The tool is constructed such that sliding the scale along a longitudinal axis of the frame automatically unlocks the tool from the extended or retracted configurations. The tool can open and/or close automatically. The tool, such as a knife, can swing open or extend out a front opening in the frame.

Abstract: The present invention relates to an ophthalmic knife and methods of its use for treatment of various conditions including eye diseases, such as glaucoma, using minimally invasive surgical techniques. The invention relates to a multi-blade device for cutting the tissues within the eye, for example, a trabecular meshwork (TM).

Abstract: A dual shaft arrow insert. The dual shaft arrow insert includes a first portion, where the first portion is configured to attach to an inner surface of a terminal end of an inner shaft of a dual arrow system. The dual shaft arrow insert also includes a second portion. The second portion is attached to the first portion and includes an outer diameter which is larger than an outer diameter of the first portion. The dual shaft arrow insert further includes a collar. The collar is attached to the second portion opposite the first portion and includes a larger outer diameter than the outer diameter of the second portion. The dual shaft arrow insert additionally includes an attachment configured to allow for attachment of an arrowhead.

Abstract: A pocket knife includes a chassis, a surface defined by the chassis, and a blade having a retracted position in which the blade is locked inside of the chassis and a deployed position in which at least a portion of the blade is locked outside of the chassis. An actuator is slidingly engaged with the chassis to reposition the blade between the retracted and deployed positions. A stop pin is connected to the blade. An end of the stop pin extends a predetermined distance from the blade to engage with the surface defined by the chassis when the blade is in the deployed position to prevent movement of the blade with respect to the chassis.

Abstract: A pocket knife includes a chassis that defines a cavity. A blade having a cutting edge has a retracted position and a deployed position. A slider inside the cavity has a first surface opposed to a second surface. A front operator is inside the cavity, and the slider engages with the front operator to move the blade to the deployed position. A rear operator is inside the cavity, and the slider engages with the rear operator to move the blade to the retracted position. A spring connects the front operator to the rear operator along the first surface of the slider. A longitudinal recess is defined in the chassis. A first boss extends radially from at least one of the front operator or the rear operator and slidingly engages with the longitudinal recess in the chassis.

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 pocket knife includes a chassis and a blade having a retracted position in which the blade is inside the chassis and a deployed position in which at least a portion of the blade is outside of the chassis. A tang of the blade has first and second legs that extend from the tang to define a recess in the tang between the first and second legs. At least a portion of the chassis extends into the recess in the tang between the first and second legs when the blade is in the retracted position.

Abstract: A utility blade includes a first blade retention feature positioned on a proximal edge of a tang of the utility blade. The proximal edge is angularly offset from a longitudinal axis of the utility blade. The first blade retention feature is associated with an engagement axis parallel to the longitudinal axis of the utility blade. The utility blade is configured to translate along the engagement axis to cause the first blade retention feature to engage with a first blade engagement component of a blade holder. The utility blade further includes a second blade retention feature positioned on a second edge of the tang of the utility blade. The second blade retention feature is positioned along the longitudinal axis of the utility blade and between the first blade retention feature and a distal tip of a cutting portion of the utility blade.

Abstract: A cutting device is disclosed. The cutting device has a first housing member, a second housing member that is removably attachable to the first housing member to form a housing, and a cutting assembly that is movably disposed in the housing, the cutting assembly including an urging member, an actuating member, and a cutting member. The housing includes a first recess and a second recess. The actuating member includes a protrusion that is selectively receivable in the first recess and in the second recess. The urging member biases the actuating member toward the first and second recesses.

Abstract: The invention provides a tissue cutting device comprising a handle, a first blade, and a second blade. The second blade is coupled to the handle. The second blade is rotatable relative to the first blade such that the second blade is configured to rotate between a first position and a second position. The second blade is in a same plane as the first blade when the second blade is in the first position. The second blade is rotated into a different plane from the first blade when the second blade is rotated from the first position toward the second position.

Abstract: An out-the-front knife, components thereof, and associated methods. The out-the front knife can be a double-action spring-assisted knife. The knife includes a handle and a blade. The handle includes a rear end and a front opening opposite the rear end. The blade is movable with respect to the handle between stowed and deployed positions. In the stowed position, the blade is biased rearward. The knife includes an actuator movable in a deploying direction to spring the blade forward away from the stowed position toward the deployed position.

Abstract: A retractable cutter comprises a plunger that can be pressed to an on-position for pushing a thrust device of the cutter to guide a blade via a cam piston cartridge through a blade guide and partially outside a bottom retainer to expose the tip of the blade from a housing of the retractable cutter. In this on-position, a spring mechanism of the retractable cutter is engaged between the bottom retainer and the cam piston cartridge to provide a spring force for preventing the blade from extending any further. When the plunger is pressed to an off-position, the thrust device is positioned in such a way to enable the spring mechanism to rebound to its original position for retracting the blade back into the housing.

Abstract: A multi tool comprising a housing, a first writing utensil, a knife and an activation mechanism, where the first writing utensil and the knife are slideably arranged in a forward portion of the housing, said activation mechanism being arranged to independently move the first writing utensil or the knife along the longitudinal extension of the front portion of the housing such that multi tool can assume one of three positions, a first position where the knife extends out of the forward portion of the housing, a second position where the writing utensil extends out of the forward portion of the housing and a third position where both the knife and the writing utensil are retracted into the housing.

Abstract: A retractable utility knife includes a blade carrier having a control pin and a frame liner having a control track, the carrier moveable between a retracted configuration, and deployed configuration, and a removal/replacement configuration, the control pin retaining the blade to the carrier in the retracted configuration and deployed configuration, and the control track being arranged so that the control pin releases the blade from the carrier when in the removal/replacement configuration.

Abstract: Bladed devices that can be used for training, warning, or defense. Conductive elements are separated from the conductive blade, which can have sharp or dull edges, by an insulating material. When triggered the device can produce that can produce arcing or sparking between the conductive elements and the blade giving the device an intimidating appearance. When an opponent is near or contacts the blade, the device can shock or stun the opponent. The spark that they can be discharged when activated by the user and/or another event, such as contact with a person. The device can have any configuration, such as a knife, folding knife, dagger, sword, axe, arrow, spear, hatchet, and machete. A sheath can be used to protect sharp edges of the blade while still producing the desired electrical effects.

Abstract: A knife has a knife handle and a blade, the blade being extendable and retractable in relation to the knife handle. A reinforcing part is provided which can support an extended portion of the blade, and is movable in respect of the knife handle and is detachably connected to the blade. Alternatively, the knife has a blade-moving carriage and/or a reinforcing part-moving carriage and a latching holder for latch-adjusting different extended positions of the blade is provided. In another embodiment, the blade-moving carriage has a holding magnet for holding cooperation with the blade. In yet another embodiment, a closing cap is arranged on the knife handle at the rear end of the blade, the closing cap closing the movement path for the blade-moving carriage and/or the reinforcement part-moving carriage.

Abstract: The present invention generally relates to cutting devices. Specifically, the present invention relates to a deburring cutter device. In some examples, the deburring cutter includes a handle module, a blade, and a blade cover. In an exemplary embodiment of the present invention, the handle module includes a blade holder configured with a blade cavity having walls which are adapted to reversibly secure the blade, allowing the blade to be selectively removed.

Abstract: A device for destroying the blood vessels forming telangiectasias includes: a single blade; and a device body, the body having firstly a gripping part and secondly a support for the blade; and a stop situated at a distance of between 0.1 and 1 cm from a distal end of the blade limiting the penetration of the blade, in the thickness of the skin, to a depth of less than 1 cm.

Abstract: An auto-retract scraper is described herein. The auto-retract scrape comprises a housing, a slider, a blade, a rotating hard stop, and a torsion spring. The rotating hard stop is rotated clockwise forcing the blade forward and out of the housing when the slider is engaged.

Abstract: An improved double-locking clicker mechanism is generally disclosed. The clicker mechanism includes a housing, plunger, and lock button. The lock button interacts with the housing such that it is capable of locking the plunger in two positions: a retracted mode and an extended mode. The clicker mechanism can couple with other elements to form a functional structure, such as forming part of a writing tool. With such a structure, the writing tool can be locked in writing and non-writing modes, providing improved safety for users thereof.

Abstract: A belt buckle and knife assembly for converting a belt buckle into a self defense weapon includes a buckle that has a first portion is hingedly coupled to a second portion. The buckle is positionable in a folded position or an unfolded position. A belt is removably attachable to extend between each of the first portion and the second portion of the buckle for wearing around the user's waist. A knife is pivotally integrated into the buckle and the knife is positionable between a stored position and a deployed position. A catch is movably integrated into the second portion of the buckle and the catch retains the knife in either the stored position of the deployed position.

Abstract: A knife is provided that includes a replaceable blade element. The knife employs a blade carrier that is fixedly interconnected to or foldable with respect to a handle. The blade carrier selectively receives the replaceable blade element that is locked into the blade carrier by way of a hook and movable pin combination. The replaceable blade element is designed to be inserted within the blade carrier quickly, easily, and safely.

Abstract: A box top opener employs a trapezoidal ceramic blade having a cutting edge which is positionable at multiple positions. A knob is rotatable to extend and retract the blade. A guide projects from a front of the cutter body to provide a guide surface engageable against the top of a box. In one embodiment, a blade carrier has a follower which traverses a spiral track for displacing the blade.

Abstract: A knife is provided that includes a replaceable blade element. The knife employs a blade carrier that is fixedly interconnected to or foldable with respect to a handle. The blade carrier selectively receives the replaceable blade element that is locked into the blade carrier by way of a blade release mechanism by biasing an associated spring that is further associated with a blade release button. The replaceable blade element is designed to be inserted within the blade carrier quickly, easily, and safely. The replaceable blade element may abut an internal guide surface during insertion.

Abstract: A system and method of correcting the trajectory of a hunting arrow is disclosed and described. The arrow can include a compensator coupled to a shaft of the arrow and the compensator has diameter that is larger than a diameter of the shaft of the arrow. A thickness of the compensator, which is measured as the difference in the diameter of the compensator and the diameter of the shaft of the arrow, is configured to enable a user to aim the arrow with a bow that has been sighted for a standard arrow.

Abstract: A utility knife includes a blade, a housing to store the blade, an actuator, and a pinion gear to deploy the blade. The pinion gear includes one or more sets of teeth that are engaged with a fixed rack of the housing and a sliding rack of the blade holder. The pinion gear is also coupled to the actuator, which is configured to linearly translate the pinion gear. As the pinion gear linearly translates between front and back ends of the housing, the pinion gear rotates due to its engagement with the fixed rack. The further engagement between the pinion gear and the sliding rack causes the sliding rack to advance in the same linear direction as the pinion gear by a distance that is greater than the linear distance traversed by the pinion gear, thereby advancing or retracting the blade connected to the blade holder.

Abstract: A surgical retractor includes a mounting base, a first rod member, a connecting member, a compression spring, a second rod member, an expansion member, an extension spring and a position member. One end of the first rod member is assembled on the mounting base, and the other end of the first rod member includes a blocking part; the connecting member is assembled on the first rod member and includes a shoulder and a first connecting part; the compression spring is arranged on the connecting member and abuts against the shoulder and the blocking part; the second rod member is slidably arranged on the first rod member; the expansion member is arranged at the end of the second rod member and includes a second connecting part; an extension spring connects the first connecting part and the second connecting part; a position member selectively abuts against the first rod member.

Abstract: A pocket knife includes a chassis that defines a cavity and a blade having a cutting edge. The blade has a retracted position in which the cutting edge is inside of the cavity and a deployed position in which the cutting edge is outside of the cavity. A recess in the chassis defines a base and a sidewall at an obtuse angle to the base. A pocket clip is engaged with the sidewall of the recess.

Abstract: A pocket knife includes a chassis that defines a left outer surface, a right outer surface, a top outer surface, and a cavity between the left and right outer surfaces. A blade having a cutting edge has a retracted position in which the cutting edge is inside the cavity and a deployed position in which the cutting edge is outside of the cavity. An actuator in sliding contact with the chassis has a shut position that moves the blade to the retracted position and an open position that moves the blade to the deployed position. A left side of the actuator extends beyond the left outer surface of the chassis. A right side of the actuator extends beyond the right outer surface of the chassis. A top side of the actuator extends beyond the top outer surface of the chassis.

Abstract: A utility knife and methods for using the same are disclosed. The utility knife includes a handle portion, a head unit attached to the handle portion, and a blade attached to the head unit. The handle portion is made of two parts jointed together by a hinged connection arrangement. A blade support component is also included which orients the blade in perpendicular relation to a central axis of the handle. The exemplary utility knife can safely be used in many applications with a design configured to help prevent user contact with the blade's cutting edge or edges.

Abstract: A utility knife is provided, including: a housing, defining an operation compartment and a storage compartment; a blade holder, movably received within the operation compartment; a blade storing carrier, movably received within the storage compartment, including a receiving portion for receiving at least one spare blade and a grip portion; and a locking mechanism, including a base body, a movable member, a first engaging member and a second engaging member, the base body being disposed to the housing, the movable member being attached to the base body and movable between a locking position and a release position, the first engaging member being disposed on and movable with the movable member, the first engaging member and the second engaging member are releasably engaged with each other so that the blade storing carrier is detachable from the housing.

Abstract: Single-handed IUD insertion devices, methods and kits are disclosed. The single-handed IUD insertion devices have a plurality of flexing detent arms to control axial movement of the 641 elongated guide and string control slider during use.

Abstract: A knife, components thereof, a sheath therefor, and associated methods. The sheath may be releasably retainable on the blade by engagement of connection structure of the sheath and blade formed by inserting the blade into the sheath. The blade may include a bottle opener. The knife may include a finger recess adapted to receive a finger of a user when the knife is gripped by the user. The knife may be an ulu knife.

Abstract: An auto-retracting utility cutter includes a cutter body, a handle and an access door enabling top loading of replaceable blades into an slidable internal blade carriage. The blade carriage is actuated when sufficient force is applied to a linkage connected to the blade carriage which overcomes the inertia of the linkage but is resistant to casual squeezing and prevents injury from inadvertent deployment of the blade.

Abstract: A utility knife has a housing, a blade holder movable between a front position and a rear position in the housing, and first and second return formations of which one is mounted on the housing and the other on the blade holder. The first and second return formations urge the blade holder into the rear position relative to the housing in at least one region of movement of the blade holder. The first return formation includes a spring and a movable element connected to the spring and urged thereby in a travel direction of the movable element. The second return formation includes a counter surface engageable with the movable element.

Abstract: A finger-push safety knife, including a knife housing, a knife holder, a blade, and a shifter. The blade is installed onto the knife holder. The knife holder is disposed in a cavity of the knife housing. A restricting groove is disposed on the knife holder. A gear adjustment slot is disposed on the knife housing. When the shifter rotates to the blade ejection gear, the shifter fits with the restricting groove to enable the knife holder to move and move to a preset position in the cavity, and the shifter is clamped at a blade ejection position in the restricting groove, so that the displacement of the knife holder can be restricted and the knife holder can be fastened at the preset position in the cavity under the action of an external force, to restrict an extension length of the blade from the knife housing.

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 blade trigger 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 blade trigger 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 trigger knife, including a knife housing, a knife holder, a blade, an elastic part, a trigger, a linkage assembly, a connecting plate. When the trigger is rotated outwards, the elastic part is deformed, and the linkage assembly drives the connecting plate to move and enables the knife holder to move to a first blade ejection position. When one end of the blade is lifted, the knife holder is enabled to fit with an inner wall of the knife housing, the knife holder to move to a second blade ejection position, and the connecting plate is fastened onto the knife housing and separated from the knife holder. When the end of the blade is moved down, the knife holder is enabled to move down, the elastic part is restored from the deformation to enable the knife holder to move to a rebound position.

Abstract: A utility knife is provided, including: a housing, including first and second compartments; a blade holder, movably received within the first compartment; a blade storing carrier, detachably inserted in the second compartment, including a receiving portion for receiving at least one spare blade; an elastic unit, disposed between the housing and the blade storing carrier; and a locking mechanism, including a base body disposed to the housing, a movable member attached to the base body and movable between locking and release positions, a first engaging member disposed on the movable member and a second engaging member disposed on the receiving portion and releasably engagable with the first engaging member, when the is second engaging member is disengaged from the second engaging member, the elastic unit biases the receiving portion to eject the blade storing carrier.

Abstract: A device is disclosed including a reloadable utility knife having a blade magazine with one or more compartments for storing multiple cutting blades. The blade magazine has a reloading compartment for new blades, and a storage compartment to keep additional blades. The blade magazine is loaded from the rear of the knife body and is locked inside. A working blade may be released before reloaded a fresh blade. The working blade can be extended or retracted multiple times via a blade transport mechanism. The blade magazine may be extracted via the lock mechanism and pushed out by a spring designed for this purpose. The blade transport mechanism, the blade release mechanism, and a blade lock mechanism work in cooperation to allow extension and retraction of a blade, disposing of a blade, and reloading of a blade.

Abstract: A cutting device is disclosed. The cutting device has a first housing member, a second housing member that is removably attachable to the first housing member to form a housing, and a carriage that is movably disposed in the housing, the carriage including a first attachment portion, which is disposed at a first portion of the carriage, and a second attachment portion, which is disposed at a second portion of the carriage that is disposed away from the first portion of the carriage. The cutting device also has an exterior member disposed at an exterior of the housing and attached to the carriage via an aperture disposed in one of the first housing member and the second housing member, and a cutting member that is removably attachable to the first attachment portion at the first portion of the carriage.

Abstract: The invention relates to a rotary cutter (10) with an exchangeable blade (33), which enables the blade (33) to be replaced easily with little risk of injury and can be used in a variety of ways. The rotary cutter (10) comprises a handle (20) and a blade holder (30) which is detachably connected to the handle (20). A solid casing of the blade holder (30) takes at least half of the blade (33) within it (FIG. 1).

Abstract: A handle fastening coupling, preferably for household and gardening implements comprises a guide piece (12) that is pressed into a handle-tube end and has an elongated guide channel (14) for a handle insert pin (3), which has a first end fastened to the implement and second free end, wherein the second end has a lock opening (6); and a locking element (20) that is preloaded by a latch spring (18) in a first radial direction perpendicular to the handle axis and that is designed to snap into the lock opening of the handle insert pin, wherein the locking element can be moved out of the lock opening in the radial direction by an operating button in order to release the handle insert pin (3) to pull it out of the guide channel.

Abstract: A utility knife includes a hollow handle having a slot and an opening at each end. A razor is slidable between each end of the handle and may protrude at each opposing end for cutting use. The razor is mounted to a shuttle which includes a tab that is positioned within the slot. The user may use the tab to slide the shuttle and the blade within the handle between the two ends, as desired. A U-shaped blocking component is pivotally attached to the handle and is used to block sliding movement of the tab beyond a midpoint of the handle to prevent the razor protruding into the user's hand. The user must unlock the blocking element to safely allow the shuttle to be slid past.

Abstract: A scalpel has a handle (1) and a blade carrier (2) movable within a longitudinally extending cavity therein between an operative position in which a blade (5) on the blade carrier is exposed for use and an inoperative retracted position. A manually operable slider (4) moves the blade carrier (2) that has a catch face (21) directed rearwards in the operative position. The catch face partially aligns with a stop face (22) provided on the handle (1) in the normal operative position of the blade carrier such that force exerted on a blade carried by the blade carrier in the direction of the length of the handle causes engagement of the catch face with the stop face to arrest movement of the blade carrier into the cavity. Transverse biasing of the blade carrier (2) is overcome by pressure exerted on the slider (4) to retract the blade carrier (2) into the handle with the catch face (21) passing the stop face (22).