Abstract: Various embodiments of a dural elevating and cutting apparatus and methods of use are disclosed herein.

Abstract: An apparatus for severing a workpiece having a cutting mechanism operable to cut the workpiece substantially along a selected course; drive mechanism operable to drive the cutting mechanism to cut the workpiece; a transport assembly operable to guide the workpiece in movement relative to a predetermined severing position and with respect to the cutting mechanism; and a frame mounting the cutting mechanism and transport assembly in predetermined relation to each other and relative to the severing position so that the drive mechanism is operable to drive the cutting mechanism to cut the workpiece in the severing position.

Abstract: A work apparatus has a tool which is driven in rotation by a drive motor via a transmission. The drive motor is an electric motor which has a commutator and brushes. The drive motor is arranged in a motor housing and drives an impeller wheel which conveys a cooling airflow for the drive motor. Simple and effective lubrication of the transmission is achieved with the cooling airflow flowing past the commutator and brushes and the transmission is arranged downstream of the commutator in the cooling airflow. The motor housing is formed in a manner closed toward the transmission housing on that end side that faces the transmission housing and is connected to the transmission housing via a flow connection.

Abstract: A hand-held, power operated debridement tool (2000) includes a rotary disk knife blade (2300) with a cutting edge (2360) on an outer peripheral edge (2362) of the knife blade, the cutting edge defining a cutting plane (CP) of the disk knife blade. The debridement tool further includes an annular skin guide (2700) including an outer wall (2716) defining a skin contact surface (2720) disposed above the cutting plane (CP) of the disk knife blade and positioned radially inwardly of the disk knife blade cutting edge to receive and direct an excised layer of skin tissue (EST) cut by the disk knife blade upwardly away from the blade cutting edge. The debridement tool additionally includes an axially adjustable depth gauge (2620) including a depth gauge plate (2622) disposed above the cutting plane of the disk knife blade and positioned radially outwardly of the cutting edge of the disk knife blade.

Abstract: A cutting and sharpening device includes a body, a blade element having a cutting edge and rotatably mounted with respect to the body, and a sharpening tool configured to be removably coupled to the body. The sharpening tool can be selectively moved between a first position in which the sharpening tool is spaced from the blade element and a second position in which the sharpening tool contacts the blade element adjacent the cutting edge. The device can be used as a rolling cutter or slicer, and as a sharpening device that sharpens the blade element when the sharpening tool is coupled to the body. The sharpening tool can sharpen the cutting edge when it is in the second position and the blade element is rotated or rolled, directly or indirectly, on a surface.

Abstract: A sharpener to sharpen the edge of a food slicer blade includes a non-planar abrasive surfaced rotatable disk mounted on a supporting structure. The supporting structure includes one or more surfaces designed to align with at least one of a push bar, thickness control plate and the surface of the food carriage of the food slicer when the abrasive surface of the disk is in contact with the edge of the slicer blade.

Abstract: A folding knife is provided which has a blade, a main handle and a tail handle. The tail handle is pivotably engaged to the main handle. When the knife is in a work configuration, a free end of the tail handle is swung to engage a blade end of the main handle and, together with the main handle, the tail handle forms a grip from which the blade extends. Both the main handle and the tail handle have grooves, such that when the tail handle is swung away from the main handle into an open position, the handles together form a sheath for the blade. With the main handle and the tail handle so configured, the blade of the folding knife can be longer than the grip and yet still be sheathed when the blade is swung into the sheath formed by the main handle and the tail handle for storage. The knife preferably has a tip encasing assembly attached to the tail handle which prevents the blade from being accidentally disengaged from the sheath.

Abstract: A tri-fold knife is provided which has a blade having a tang and bifurcated handle. The handle has a main handle which has a forward end which is pivotably attached to the tang. The main handle terminates in a butt end. A tail handle is provided with a forward engaging end and a butt end coupling which pivotably engages the butt end of the main handle. The main handle is provided with a main handle slot and the tail handle is provided with a tail handle slot which connects with the main handle slot. When the main handle forward end engages the tail handle forward engaging end, a knife handle is formed. When the tail handle is end to end with the main handle, the slots form a sheath into which the knife blade can be pivoted. Preferably, locks are provided to hold the blade with respect to the main handle when the knife is opened and the blade is exposed. A lock is also provided to hold the blade in the closed position where the blade lies in the main handle slot and the tail handle slot.

Abstract: A multifunction cutting tool includes a cutting head adjustable for straight, free form or circular cutting of glass and tile, interchangeably mountable hobby and hook blades for cutting carpet, PVC, matting and the like, a roller cutter for cutting cloth, wallpaper, leather and similar sheet material, knife and scissor sharpeners and an angled carpet cutter blade mounted in a carriage with a base plate for sliding under the carpet. The tool has blade guards to protect the user from accidental injury and brackets supporting the cutting blades that are stabilized by resilient snap fittings and laterally extending support shoulders. Access to retractable folding hobby and hook blades is improved by the addition of screwdriver tip receiving pivot slots in the blades and the work surface of circular cuts is protected by a suction cup having a recessed and covered metal attachment.

Abstract: A mechanical drive assembly that is particularly useful for moving a sharpening stone into engagement with a sharpenable chain saw is mounted to the side plate of the chain saw housing. The stone moves linearly a predetermined stroke length toward and away from the chain, and the beginning position thereof is incrementally adjustable, to take into account wear of the stone. The stone may be returned to an original position, for replacement, in another distinct mode of operation.

Abstract: A flexible knife scabbard has a blade-receiving elongated passage open at one end extending longitudinally therein and has a blade sharpening slot open at both ends extending laterally therethrough and transversely through the elongated passage. Knife blade sharpening insert means including a pair of mating rigid plastic insert members or components are disposed in the elongated passage and each component includes an aperture in registry with the other and with the blade sharpening slot. The insert means further includes a pair of cylindrical ceramic blade sharpening elements or rods, one mounted on each insert component and overlying a portion of the associated aperture. The two rods are disposed in V-shaped arrangement relative to each other and located at (and overlapping) an end of the sharpening apertures in the insert member and the sheath slot. The knife blade slips into the scabbard between the insert members in normal use.

Abstract: A sharpening device for a chain saw having an endless saw chain driven by a motor supported by a chain saw housing includes a housing adapted to be mounted to the chain saw housing spaced from the cutters. A grinding assembly having a grinding stone mounted thereon is movably mounted to the housing from a first position spaced from the cutters to a second position wherein the grinding stone is in contact with the cutters, and vice-versa. An actuator assembly is also movably mounted in the housing from a retracted position to an actuated position, and vice-versa. A coupling assembly is provided which moves the grinding assembly to the first position responsive to movement of the actuator assembly to the retracted position. A first spring is mounted between the actuator assembly and the grinding assembly and yieldably urges the actuator assembly toward the retracted position and the grinding assembly toward the second position.

Abstract: A sharpener drive for the straight blade of a fabric cutting machine receives its motion from the crank wheel which drives the blade. A drive wheel, which selectively engages the crank wheel, drives a gear train which drives a gear mounted in splined relationship with an elongated shaft. A sharpener is mounted on the elongated shaft for selective engagement with the straight knife. An actuator is attached to the elongated shaft for sliding the elongated shaft through the gear with which it is splined to thereby move the sharpener axially of the knife while the gear rotates the elongated shaft to drive sharpener wheels. A link is engageable by the elongated shaft in its stored position for effecting disengagement of the drive wheel from the crank wheel. A latch includes a camming portion for moving the latch into locking engagement with the cutting machine housing when the elongated shaft is moved to its stored position.

Abstract: In a cutting machine of the type having a vertically reciprocating cutting blade, an internal grinder and a presser foot on a carrier bar, a lifting device responsive to operation of an actuating member for stopwise lifting the carrier bar to permit true one-hand operation and to avoid possible injury to an operator placing his hand on the presser foot in the region of the reciprocating cutter blade.

Abstract: The invention relates to a cloth-cutting machine with a sword-knife, provided with a band sharpening device, an elastic hold-down and all the parts being in contact with the cloth sheet to be cut are coated with an anti-friction polytetrafluorethylene coating. The machine is driven by an electromotor and can be characterized in that in the sharpening head band tensioning arms are arranged, on said arms changeable heads are mounted, furthermore the machine is provided with a control spindle performing regulation by means of a tension spring and a nut bolt. The rod pressing the cloth in an elastic manner is provided with the toothed retaining member, the casing leading the same, with the spring built into said casing, with a retaining lever, a further spring and with an arm for the release of the retaining member.The machine according to the invention ensures excellent quality of the cloth-sheet cut, economical operation of the machine and reduced display of physical strength.

Abstract: A support is provided and a rotary grinding head is journaled from the support for rotation about a first predetermined axis. A support arm is pivotally mounted at one end from the support for swinging of the support and support arm about a second axis substantially paralleling the first axis and the other free end portion of the support arm includes structure for supporting a saw chain therefrom for successive positioning of the cutting teeth of the chain in predetermined position for sharpening by the grinding wheel. As a result of relative swinging of the support and the support arm, the rotary grinding head is swingable into registry opposite side portions of the supported saw chain. Also, a chain tooth engaging and positioning member is supported from the support arm for establishing the predetermined position of the tooth to be sharpened and is swingable into and out of an operative position.

Abstract: A chain saw sharpener is provided for sharpening the teeth of a cutting chain during operation of the chain saw. The sharpening system includes a housing mounted in the chain saw engine shroud and projecting both interior of and exterior of that shroud. A bushing is splined within the housing and the arbor of a grinding stone is rotatably supported in the bushing. The bushing and grinding stone are movable with respect to the fixed housing between a first position in which the grinding stone is remote from the cutting chain teeth and a second position in which the grinding stone is positioned for contact with cutting edges of the chain teeth as they travel in their fixed path around a sprocket within the shroud. A manually depressable knob is threadably engaged with the bushing and includes a stop surface engagable with the housing to define the second position of the grinding stone.

Abstract: A guard and sharpener construction for a rotary cutting machine having a base, a circular knife mounted on the base, a motor for driving the circular knife, a standard for mounting the motor above the base, an elongated slotted rod slidable to cover a segment on the leading edge of the circular knife, a pair of sheet-like guard members mounted on the mounting arms for the sharpener wheels, the guard members covering opposite sides of the knife above the segment, a pivotal shaft and associated mechanism for mounting the arms for movement between a sharpening and a non-sharpening position, with the rod member, the sheet-like guards and the sharpener arms being so oriented relative to each other so as to permit the sharpener to be used in all positions of the rod-like guard member, and a keyway and set-screw indexing structure for mounting the arms on the pivotable shaft.