Abstract: Exemplary embodiments of method and apparatus are provided for damaging and/or removing portions of subcutaneous fatty tissue while leaving the overlying dermal layer of the skin substantially undamaged. One or more hollow needles can be provided that include an arrangement within the lumen configured to retain or damage portions of fatty tissue that enter the lumen. Properties of the needle can be selected such that the needle can be inserted into skin and pass through the dermal layer, allowing fatty tissue to enter the distal portion of the lumen as it is advanced further, and then leaving the dermis undamaged when withdrawn. Such exemplary apparatus can include a plurality of such needles, a reciprocating arrangement to mechanically advance and withdraw the one or more needles, and/or a vibrating arrangement.

Abstract: A bone screw, comprising a proximal end and a distal end spaced from the proximal end in a distal direction along a longitudinal axis of the bone screw and a cannulation extending from the proximal end to the distal end. The bone screw further including a threaded region extending along at least a portion of a length of the screw, the length extending from the proximal end to the distal end. The threaded region defining at least one external thread that extends about the longitudinal axis along a helical path. The threaded region includes at least one flute that extends to the distal end of the bone screw. The at least one flute defines an associated at least one cutting tooth that, in turn, defines a cutting face oriented so as to define an angle with respect to the longitudinal axis. The angle is in the range of about 5 degrees and about 25 degrees, and the flute circumferentially interrupts at least a portion of the external thread.

Abstract: A trepanning apparatus, including a shaft portion extending along a longitudinal axis; an annular cutter portion; and a connecting portion extending axially between the shaft portion and the cutter portion, the connecting portion including a pair of arms each having a front end connected to the cutter portion and a rear end connected to the shaft portion, the arms circumferentially spaced from one another about the longitudinal axis to provide diametrically opposed first and second openings, a first plug retaining surface defined by a first portion of the rearward end of the cutter portion having a first circumferential extent bounded by the front ends of the arms, and a second plug retaining surface defined by a second portion of the rearward end of the cutter portion having a second circumferential extent bounded by the front ends of the arms, the first circumferential extent greater than the second circumferential extent.

Abstract: An arthroscopic surgery method for ankle ligament reconstruction of this embodiment is removed using an ultrasonic treatment tool, blowing away a synovial membrane, and secures the view for a remnant ligament. Then, bone holes are produced to a fibula, a talus and a calcaneus using the ultrasonic treatment tool.

Abstract: Embodiments of the invention include an orthopedic milling machine for preparing a glenoid bone. The milling machine uses a hub and a sleeve. The hub includes reliefs arranged to cut or mill the bone and the sleeve couples to the hub to transfer rotational motion to the hub. The hub has an axial bore sized to receive an orthopedic guide pin. The hub also has a lateral passage slot that allows the hub to move laterally towards the guide pin in order to place the guide pin within the axial bore.

Abstract: The present disclosure includes a retrofitted door brake. The retrofitted door brake may, in various embodiments, comprise a hub comprising a cylindrical central axle, a plurality of projections extending radially away from an outer circumference of the central axle, and/or a cam comprising a plurality of pins that hold the projections away from a channel wall of a brake housing. The pins may be configured to break away from the cam to release the projections into contact with the channel wall, and the pins may be fitted with a cover, such that the pins are capable of withstanding abrasion and wear. The cover may comprise a cylinder having an axially running aperture, and/or a beveled edge that shaves a layer of the outer surface from one of the plurality of pins as it is fitted over the pin.

Abstract: A hole saw includes a cylindrical body disposed along an axis of rotation with a side wall extending axially from a cap end to a cutting end. The cutting end includes a plurality of cutting teeth. A cap includes a rim portion seated on the cap end and an axially extending portion extending into the cylindrical body from the cap end. The side wall defines an aperture including a first slot portion and a second slot portion disposed closer to the cap end than the first slot portion. A wall of the second slot portion nearest the cap end is between approximately 0.010 inches and approximately 0.120 inches axially offset from the axially extending portion of the cap.

Abstract: A jig for cutting plugs for pocket holes from a workpiece has a base leg, from which transversely extend guide and clamp legs. One or more guide channels extend through the guide leg at an angle to an interior face of the guide leg to guide the sleeve of a rotating cutter bit that has a cutting edge at its end and a removed section forming a cutting blade. A clamp extends from the clamp leg to engage one face of a workpiece whose end is mounted on a raised ledge on the base leg and holds the workpiece opposing face against the guide leg interior surface as the sleeve end cutting edge and blade advances into and cuts entirely through the workpiece to cut the plug. A collar on the cutting bit shaft engages the guide leg to prevent the sleeve end cutting edge from contacting the base leg. The jig also can be used for making pocket holes by using the appropriate drill bit.

Abstract: A hole cutter for cutting a work piece, such as a wood and/or metal work piece, has a substantially cylindrical blade body defining a wall thickness within the range of about 0.032 inch to about 0.038 inch, and a cutting edge formed on one end of the blade body including a plurality of teeth defining an average tooth pitch within the range of about 3.5 TPI to about 5.5 TPI for cutting the work piece and forming chips therefrom. The substantially cylindrical blade body and cutting edge define an average tooth pitch to blade body thickness ratio of at least about 110.

Abstract: A hole cutter has a cylindrical blade body including a cutting edge and one or more axially-elongated apertures formed within a side wall of the blade body. The axially-elongated aperture is configured to receive a lever, such as a screwdriver, therethrough. Each axially-elongated aperture includes a first fulcrum axially spaced adjacent to the cutting edge, a second fulcrum axially spaced further away from the cutting edge than the first fulcrum, and a third fulcrum axially spaced between the first and second fulcrums. A lever, such as a screwdriver, can be inserted into the aperture and placed against each of the fulcrums to lever slugs out of the interior of the blade body.

Abstract: A hole cutter has a substantially cylindrical blade body defining a blade body circumference, a cutting edge formed on one end of the blade body, and an axially-elongated slot formed through the substantially cylindrical blade body. The axially-elongated slot is configured to receive chips flowing from the cutting edge within the interior of the blade body and (i) into the slot, and/or (ii) through the slot, to prevent the collection of such chips within the interior of the blade body and/or at an interface between the blade body and work piece. The axially-elongated slot defines a first end adjacent to the cutting edge, a second end axially spaced further from the cutting edge, and a slot area. The hole cutter further defines a total slot area to blade body circumference ratio within the range of about 0.1 to about 0.3 depending on the size of the hole cutter.

Abstract: A drill bit has a cylindrical drill head (1) having two essentially diametrically situated primary cutting edges (2) and chip channels (3) associated therewith. The outer surface (5) of the drill head is formed by curved sections (6) whose end faces (4) have teeth (8) which extend in the axial direction (A) and have cutting edges (7) and cutting faces (9). The cutting faces (9) run at an acute angle in the cutting direction (S) and are set back with respect to a radial line (L) passing through the cutting edge (7). The teeth are formed by crenellated elements (8) which with one of their respective side walls form a cutting face (9) of the cutting edges (7). The side walls (10) of the adjoining crenellated element (8) opposite from the cutting face (9) runs parallel to the cutting face (9).

Abstract: A cutting tool comprising: a rotatable hollow tube with an inlet at a distal end of the tube and a cutting edge at the perimeter of the inlet, the tube being arranged so as to rotate when in use so as to cut a work piece with the cutting edge; and an auger housed within the hollow tube, the auger being arranged so as to rotate when in use so as to feed cut material from the inlet along the hollow tube, wherein a distal end of the auger is set back from the cutting edge of the tube. A method of drilling a hole in a dry fibre assembly, the method comprising engaging the dry fibre assembly with a cutting tool comprising a hollow tube with an inlet at a distal end of the tube and a cutting edge at the perimeter of the inlet; and rotating the hollow tube so as to cut the dry fibre assembly with the cutting edge.

Abstract: A drill bit has an annular cutting edge to form a hole in a workpiece. The drill bit is received within a drill and rotated above 20,000 revolutions per minute. A distal end of the drill bit defines an annular edge surrounding a hollow cavity. The annular edge both cuts and melts the workpiece during formation of the hole. The drill bit also defines an exit hole passing perpendicular to an axial center of the drill bit. The exit hole and the hollow cavity join within an interior of the drill bit to form a material passage way. Core material cut from the workpiece is collected within the hollow area of the drill bit during operation. Rotational forces of the drill bit eject the core material thus allowing the drill bit to cut multiple holes without manually removing core material from the hollow cavity.

Abstract: A plug cutter is described that is rotatable about an axis of rotation. the plug cutter has a main body having a longitudinal axis coinciding with the axis of rotation. The main body defines a bore extending axially therein. A shank extends axially from one end of the main body along the axis of rotation. A plurality of cutting blades extend axially from the opposite end of the main body and each terminate in a distal end. The plurality of blades are adapted to cut a plug from a piece of stock as the plug cutter is rotated about the axis of rotation and advanced axially into the piece of stock. Each of the blades has leading and trailing edges. Each of the blades also has an inner surface and a radially relieved portion facing the bore. The radially relieved portion begins at a relief start position and ends at a relief end position so that, as the plug cutter cuts the plug, a gap is defined between an outer surface of the plug being cut and the radially relieved portion.

Abstract: A device for cutting truncated dowels from a board, with a device including a one-piece cutting body shaped as a hollow cylinder and having a concentric clamping shank. The cutting body is provided with only one recess which forms a knife edge, with the recess opening toward a front of a cutting body and merging into a wider dowel ejection opening. The cutting body has an inside annular cutting edge which determines the larger outside diameter of the truncated dowel to be cut and from which the knife edge originates. The inside circumferential surface of the jacket tapers conically toward the clamping shank, and the knife edge is inclined obliquely inwardly in accordance with the conicity of the inside circumferential surface.

Abstract: A core extracting drill bit is provided including an elongated hollow body including a forward cutting end and a second rearward rotary torque input end. The body defines a central chamber therein opening forwardly outwardly through the forward cutting end thereof and one side of the body includes an opening formed therein opening laterally into the central chamber. An elongated closure is provided for the opening with coacting portions of one end of the closure and the body releasably locking the one closure end to the body against radial outward displacement relative thereto and the other of the body and adjacent body portions include structure for keying the other closure end to the body for rotation therewith, but allowing radial outward movement of the other closure end relative to the body.

Abstract: A cutting tool for making cylindrical bores includes two or More cutting inserts and radially or approximately radially directed blades which leave an uncut core, as well as chip removal devices extending in the axial direction of the tool. The cutting tool is composed of at least two coaxial parts. One part forms the boring crown with the cutting inserts, and the other part forms the support for the boring crown with a clamping shank. The chip removal devices extend axially along both parts and lead radially to the outside.

Abstract: A hollow drill for fabric and the like is comprised of a hollow shaft having highly polished inside and outside surfaces and an outside diameter of preferably not more than 0.130 inches. A tip having a larger outside diameter and smaller inside diameter is brazed or soldered to the shaft. The shaft is made by a continuous manufacturing method such as extrusion and the tip is machined or molded followed by finish machining.

Abstract: The present invention refers to an apparatus for removing damaged portions of rubber components, in particular of steel-braced radial-ply tyres, including a driven and rotating tool. The tool (1) consists of a sleeve whose wall thickness tapers like a knife in the tool operating direction thus forming essentially an edge (9) and the front edge (9) of the tool has formed therein notches (7). It will be expedient when the outer circumferential surface (11) of the sleeve extends essentially parallel to the axis (13) thereof, and it will be expedient when the inner circumferential surface (15) extends at an oblique angle outwards in the front area of the sleeve. The sleeve can consist of a cutting crown (3) and of a carrier sleeve (5), the cutting crown (3) being preferably made of a material of high hardness, in particular of hard metal (FIG. 1).

Abstract: A metal cutting tool is disclosed which includes a cylindrical cutting body (12) having an outer cylindrical surface (13) approximating the size of the hole desired and an inner wall (14) which tapers towards a base (15). The cutter body further includes a notch (17) for removal of cutting chips which has a socket disposed on the leading edge thereof. A carbide cutting tip (26) is disposed in the socket with the cutting tip being substantially pyramidically shaped, having a blunt cutting edge (35) extending above the cutter body. The metal cutting tool further includes a pilot bit (36) extending axially through the center of the cutter body, with the pilot including a short fluted (37) section which extends above the top of the cutting tip and provides a pilot hole for guiding the cutting tip during hole cutting.

Abstract: Metallic sintered parts with hollow structure and high density and toughness can be produced easily be kneading a raw metallic powder with an aqueous solution of an organic binder, extruding the resulting kneaded mixture, removing the organic binder from the extruded product and sintering the binder removed extruded product.

Abstract: An end mill comprises an end mill body and a throw-away tip mounted on a forward end of the end mill body so as to be spaced from an axis thereof. A core receiving recess is formed at a center of a forward end face of the end mill body and has a size equal to or greater than a distance between the throw-away tip and the axis of the end mill body. The throw-away tip has an end cutting edge formed by a cutting edge ridge located adjacent the forward end of the end mill body and extending from an outer peripheral side of the end mill body toward an inner peripheral side thereof, and outer and inner peripheral cutting edges respectively formed by cutting edge ridges respectively extending from outer and inner peripheral ends of the end cutting edge toward a rearward end of the end mill body. The end mill body may mount at least two throw-away tips disposed symmetrically with respect to the axis thereof.

Abstract: A device for removing waste plugs from hole saws comprising a plug member positioned internally of a hole saw and retained therein by means of screws or other projections which extend outwardly through cleanout slots of the hole saw. The projections may be joined through an external annular ring which encircles the hole saw. The ring may be grasped and forced downwardly causing the plug member to eject a waste plug from the hole saw. A spring may be positioned between a mandrel of the hole saw and the plug member in order to normally bias a plug member downwardly to assist its positioning and ejectment of a waste plug.

Abstract: A drill for a paper drilling machine. The drill is made of two separate parts, namely a cutting bit of hollow generally cylindrical form having an annular cutting edge at one end, and a hollow cylindrical sleeve which receives the opposite end portion of the bit and which is itself received in a collet assembly of a drill spindle of the machine. The sleeve is radially compressible and is compressed by the collet assembly to frictionally grip the bit and permit transmission of drilling torque from the drill spindle to the bit in use.

Abstract: At the top surface of a drill head, one or two tips are fixed radially with a little clearance from the axis of rotation, and thereby a nonmachining zone is formed around the axis of rotation. Each tip has its cutting edge formed projectingly from the radial line to a tangential direction and the distance from the axis of rotation to the cutting edge is made greater than the distance from the axis of rotation to an end face of the tip. The core which is generated and grows in the nonmachining zone in the course of machining is pressed by the end face of the tip and broken off, or is clamped between the end faces of the tips and wrenched off due to friction torque.

Abstract: A woodworking tool for cutting plugs including a generally cylindrical, hollow bit having its working end open and of a wall thickness tapering from the working end, the wall having a through opening on one side spaced from the working end and a longitudinal slot extending from the side opening and opening through the working end, with the working end configured to define a cutting edge and stop for depth of cut.

Abstract: Apparatus for cutting a circular hole in a workpiece having relatively low compression strength, including a hollow cylindrical drill having, at its outer terminal end, an annular cutting edge of a predetermined diameter for cutting a hole in the object. The drill includes a cylindrical wall having an axially inwardly converging sidewall portion for radially compressing the material severed from the object being cut and an inner cylindrical throat portion of a predetermined axial length and a predetermined reduced diameter for forming a continuous core of severed material. The cylindrical wall includes a tubular discharge section, axially inward of the throat and communicating with an open outlet end of the tubular member, to allow the compressed core to partially radially expand and freely axially pass. The diameter of the discharge tubular section is greater than the diameter of the throat portion but less than the diameter of the annular cutting edge.

Abstract: A drill bit comprises a body having a shank portion and an end face at its forward end. The drill bit body has at the forward end a cutting means having at least one cutting edge provided on the end face. The cutting edge is spaced from the axis of rotation of the body. The body has a rake surface which terminates in the cutting edge and extends along the axis of rotation.

Abstract: Apparatus and methods facilitating isolation of a pipe segment for repair thereof include releasable reclosable means for gripping the pipe exterior, a first conduit extending through the releasable gripping means transverse to the pipe when the releasable gripping means is about the pipe with an end of the first conduit terminating proximate the pipe exterior, sealing means sealing between the first conduit and the pipe exterior surface, a second conduit communicating with the first conduit remote from the end of the first conduit which is closest to the pipe exterior, cutting means insertable through the first conduit for cutting an aperture in the pipe wall with the cutting means having a passageway therewithin extending axially from the cutting end to a position along the cutting means lateral surface for withdrawal of fluid from the cutting point, an inflatable bladder insertable into the pipe interior via the first conduit and serving to block the interior of the pipe when inflated and valve means for s

Abstract: This invention relates to a self-threading nut which is utilized to hold a replacement shock absorber within the cylinder housing of a vehicular suspension system commonly referred to as a MacPherson strut suspension system. The nut includes a generally cylindrical main body portion having a tapered threaded portion on the inner wall thereof. A plurality of apertures are formed in the side wall of the main body portion to provide positive lead angle cutting edges and permit the removal of metal chips therefrom. The lower end of the nut is formed with an inner diameter corresponding to the outer diameter of the cylinder, and the upper end wall includes a plastic bushing having an inner diameter corresponding to the diameter of the piston rod of the replacement shock absorber. The inner diameter of the lower end and the plastic bushing cooperate to center the nut as threads are formed on the outer wall of the cylinder.

Abstract: A pouring ladle is mounted on a carriage which is movable along a track by a motor drive coupled thereto through an overrunning clutch. Movement of the carriage along the track is interrupted at a predetermined position to align the tap hole of the ladle with a rotating reaming tool. The reaming tool is axially advanced into the tap hole for reaming and then retracted and the carriage is released for continued movement along the track. The reaming tool is a hollow tubular body having a longitudinal relief slot penetrating the side thereof and an annularly shaped reaming head is concentrically and removably secured to the forward end of the body and air is fed forward under pressure into the rearward hollow end of the body for cooling and clearing of reamed cuttings.

Abstract: A self-drilling dowel consists of a tubular-shaped member with a drilling head at one end. The drilling head is formed of a plurality of teeth each having a tip. The tip of the teeth are all disposed in a single plane inclined at an angle to the axis of the tubular-shaped member. A line perpendicular to the plane containing the tips of the teeth and intersecting the axis of the tubular-shaped member is disposed to the axis at an angle in the range of 4.degree. to 9.degree.. The teeth are formed by a cutter with its center located at an offset position from the axis of the tubular-shaped member. The feed line of the cutter extending through its center can be parallel to the axis of the tubular-shaped member or it can be set angularly to the axis of the tubular-shaped member in the range of 4.degree. to 9.degree. or 81.degree. to 86.degree. depending on whether the cutter is moved generally in the axial direction or transversely to the axial direction of the tubular-shaped member.

Abstract: An improved drilling machine for cutting holes for knobs and latches in metal-clad doors comprises a supporting framework for the door and a hollow drill arranged to be moved upward from the underside of the door to cut the knob opening. The drill is hollow in construction and is supported on a drive shaft by a plurality of support members spaced a sufficient distance apart to effect an easy discharge of the core which is cut and drops through the center of the hollow drill bit or cutter. In addition, the drill bit or cutter, which is hollow in construction, has the individual cutting teeth cut at an angle such that the innermost part of the cut is completed through the metal cladding on the door before the cutter begins to cut the wooden portion thereof.