Abstract: A lighting device of the invention includes: a plurality of light sources; and an optical waveguide, wherein light emitted from the plurality of light sources is incident from a side of the optical waveguide and then emitted from one main plane of the optical waveguide. The optical waveguide includes a first inclined plane for reflecting light emitted from a first light source and then emitting the light from the one main plane, and a second inclined plane for reflecting light emitted from a second light source and then emitting the light from the one main plane at an exit angle different from the light emitted from the first light source, and wherein each of the light sources is independently driven.

Abstract: An illumination apparatus comprises: (a) at least one light source; (b) a light guide for accepting light from the at least one light source and for guiding the light using total internal reflection, the light guide having a top surface; (c) a light extracting film having an input surface optically coupled with the top surface and an output surface for providing light, wherein the input surface comprises a plurality of features which are optically coupled to the top surface of the light guide, such features having: (i) a first side comprising two or more planar segments; and (ii) a second side comprising two or more planar segments, and wherein either the length of at least some of the features is less than the width of the film or the first and second sides intersect at an apex.

Abstract: A backlight assembly includes a light-generating device, a receiving container, a first heat-dissipating member, a heat-blocking member, and a second heat-dissipating member. The receiving container receives the light-generating device. The first heat-dissipating member contacts the receiving container. The heat-blocking member is disposed on the first heat-dissipating member. The second heat-dissipating member contacts the first heat-dissipating member. Therefore, liquid crystal is prevented from being deteriorated by heat generated by a light source.

Abstract: The feeder apparatus including a chamber formed of at least one upstanding wall, a water outlet in the wall, a drain in the wall, the chamber having a bottom, inlets for water jets in the bottom for creating turbulence inside the chamber to create particle suspension and/or to increase chemicals solubility, or a perforated plate inside of the chamber and spaced from the bottom of the chamber to permit water to flow underneath and up through perforations in the plate and into the chamber.

Abstract: A watch movement with a mechanical source of energy is provided. In one implementation, the watch movement comprises a frame intended to support moving parts and defining upper and lower faces. The distance between the upper and lower faces may define a movement thickness. Further, springs may be provided for storing the energy, each being housed in a barrel. At least three barrels may be provided, the first and the second of which are superposed and the third of which is placed laterally to the other two and within their thickness.

Abstract: A timepiece has an annular case band having a front side end part that protrudes radially inwardly toward the inside of a case band and defines a front opening of the case band. A case back is detachably attached to a back side end part of the case band. An annular edge member seats on a front surface of the front side end part and has a tubular part removably inserted into the front opening of the case and, the tubular part having an annular attaching groove that opens to an outer periphery of the tubular part, and a glass is fixed to the edge member. An elastically deformable open-ended snap ring is detachably attached to the attaching groove in an elastically deformed state, and the snap ring abuts a back surface of the front side end part of the case band so that the front side end part is held between the edge member and the snap ring.

Abstract: A system and method for calibrating a pyrometer used in temperature detection in a chemical vapor deposition system is provided. A calibration wafer with a reference region including a metal such as Al or Ag for forming a eutectic, and an exposed non-reference region without such a metal, are provided. Reflectivity measurements are taken from the reference region, and temperature measurements are taken from the non-reference region, over a range of temperatures including a known melting point for the metal eutectic. The pyrometer is calibrated based on the correlation of the known eutectic melting point with the change in reflectivity data obtained in the reference region, in light of the temperature data obtained from the non-reference region.

Abstract: A micromechanical thermal-conductivity sensor is provided which includes a thermally insulated diaphragm formed by a recess in a base plate exhibiting poor thermal conductivity. At least one heating element is applied on the diaphragm, at least one temperature-dependent electrical resistor is applied on the diaphragm for measuring the temperature of the diaphragm, as well as at least one further temperature-dependent electrical resistor is applied outside of the diaphragm on the base plate for measuring the ambient temperature. On one or both of its sides, the diaphragm is covered by a porous cover plate permitting gas exchange by diffusion, a cavity being left open between the diaphragm and the porous cover plate.

Abstract: An anemometer with non-contact temperature measurement capability, including a air velocity meter, contained at least partially in a housing and having outputs relating to measured air velocity parameters including air velocity and ambient temperature, an output display contained in the housing, for displaying measurements to a user, a non-contact optically-based internal temperature sensing device, having an output related to optically sensed IR temperature and circuitry contained in the housing for processing both the air velocity or volume meter output and the temperature sensing device output, and transmitting the processed output to the output display.

Abstract: A device temperature measurement circuit, an integrated circuit (IC) including a device temperature measurement circuit, a method of characterizing device temperature and a method of monitoring temperature. The circuit includes a constant current source and a clamping device. The clamping device selectively shunts current from the constant current source or allows the current to flow through a PN junction, which may be the body to source/drain junction of a field effect transistor (FET). Voltage measurements are taken directly from the PN junction. Junction temperature is determined from measured junction voltage.

Abstract: An X-ray detector drawer, into which an X-ray detector is insertable in two alternate orientations, has guide elements by which an inserted X-ray detector is fixedly positioned and oriented. The X-ray detector drawer has a securing device, by which an asymmetrical insertion of an X-ray detector with respect to either one of the two alternate orientations is hindered. The securing device includes a blocking element, whose position is altered as a function of the removal of the X-ray detector drawer. A receptacle for the X-ray detector drawer is configured to facilitate a removal the X-ray detector drawer from either of two opposite directions.

Abstract: The invention relates to an x-ray device with an x-ray source fixed to a ceiling stand and a generator connected therewith in order to supply it with power. For simplification purposes, it is proposed in accordance with the invention to provide a conductor rail between the generator and the x-ray source on the ceiling in order to produce an electrical connection, along which conductor rail a ceiling stand accommodating the x-ray source can be moved.

Abstract: A container has a pair of side walls for defining a container interior and at least one open end. The container also includes a reclosable sealing device including a first locking member and a second locking member, each formed with a web respectively extending along the side walls adjacent the open end. The first and second locking members are repeatedly matable so that upon mating engagement of the first and second locking members along their substantially entire lengths, the open end is substantially entirely closed. Visual indicia means are provided by printing automatically and directly applied along substantially an entire length of an outer surface of at least one of the first and second locking members to present various graphics for identity or aesthetic purposes and facilitate locating and closing the sealing device.

Abstract: A clothes storage bag permitting the stacking of clothes in standing position is comprised of two side plastic films and a base plastic film; both side films defining an erected storage case on the upper part; a zipper sealing being provided to an opening at the top of the erected storage case; the lower part of each erected film laterally extending in opposite directions to form a lateral storage case connecting through the erected storage case; and a passage to expel air being provided on either side of the lateral storage case to reduce bag size.

Abstract: A sensor-integrated wheel support bearing assembly for rotatably supporting a vehicle wheel relative to a vehicle body structure has an outer member having an inner peripheral surface formed with a plurality of raceway surfaces, an inner member having an outer peripheral surface formed with raceway surfaces in alignment with the raceway surfaces in the outer member, a plurality of rows of rolling elements interposed between the raceway surfaces in the outer member and the raceway surfaces in the inner member, respectively, and a load sensor. The load sensor is disposed in one of the outer and inner members, which forms a stationary member. The outer member has an outer periphery formed with a vehicle body fitting flange. The load sensor for detecting a load acting on the vehicle wheel by detection of a load acting on the vehicle body fitting flange is disposed in the vehicle body fitting flange.

Abstract: A bearing assembly (A-H) enables one member (4) to rotate relative to another member (2) about an axis (X). It includes a bearing (6) having an inner race (54) on one of the members, an outer race (74, 126, 164, 250) in the other member, and rolling elements (58) between raceways on the two races. A seal (10, 180, 210, 256) excludes contaminants from the interior of the bearing, and it includes a wear ring (92, 184, 214, 276) carried by an extension (80, 128, 144, 168, 252) on the outer race beyond the raceway of that race, a contacting wear ring (90, 182, 212, 278) carried by the member on which the inner race is located or else by a can (110, 230, 254) that is fitted to the inner race. The seal also includes backing elements (94, 96, 192, 194, 216, 218, 294) for supporting the wear rings on that which carries them, and in most instances the backing elements exert a biasing force on the wear rings to maintain them in contact, so that they establish a dynamic fluid barrier.

Abstract: A support for a bearing that provides for damping of the bearing and for centering of the bearing within a housing, in which a plurality of cone shaped annular plates are stacked in series and positioned between the housing and an outer race of the bearing, the annular plates being offset from a plane normal to the rotational axis of the bearing such that vibration from the bearing produces rubbing of adjacent sides of the annular plates, the rubbing provides for friction damping of the bearing. The annular plates can be formed from a single wire strand formed in a coil, or from a plurality of annular cones stacked in series. The offset angle of the adjacent plates can be varied to affect the damping and the spring rate of the support. A coating for a sheet of another material can be placed between adjacent plates to change the frictional resistance due to rubbing between plates.

Abstract: A vehicle wheel bearing apparatus which can increase the strength and durability of the hub wheel under rotary bending conditions as well as lighten the apparatus without changing the configuration and dimension of the wheel mounting flange and without causing surface run-out has an outer member formed with double row outer raceway surfaces on its inner peripheral surface. An inner member is formed with double row inner raceway surfaces arranged opposite to the double row outer raceway surfaces. Double row rolling elements are freely rollably contained between the outer and inner raceway surfaces, respectively, of the outer and inner members. A wheel mounting flange is integrally formed with either one of the outer or inner members. At least one of the outer and inner members, on which the wheel mounting flange is formed, is heat treated and their raceway surfaces are hardened by quenching to a predetermined surface hardness.

Abstract: A fiber optic ferrule includes a body extending from a first end to a second opposite end, with the body including an axial passage extending between the first and second ends. The axial passage includes a first diameter portion having a diameter of at least 125 microns, and a second diameter portion having a diameter of at least 250 microns and less than a diameter of the buffer, the second diameter portion positioned between the first diameter and the second end. The axial passage further defines a tapered shape at the second end extending inward from the second end to the second diameter portion. A hub holds the ferrule. A method of assembling a terminated fiber optic cable is also provided.

Abstract: An optical connector includes a connector body that has a first optical fiber housed in advance in a ferrule so as to project from a back end of the ferrule opposite to the connecting end surface and an anchoring fixture that anchors a second optical fiber that is to be optically connected to the first optical fiber, and by pressing the anchoring fixture into the connector body while the second optical fiber is anchored in this anchoring fixture, the anchoring fixture and the connector body are connected to optically connect the first optical fiber and the second optical fiber, and the connecting portion that connects the anchoring fixture and the connector body form a movable connecting portion that is adapted to vary the direction of the anchoring fixture with respect to the connector body.

Abstract: Methods of aligning lens carriers and ferrules with alignment frames during assembly of optical cable connectors are disclosed. In one aspect, a method may include coupling an alignment frame with a circuit substrate, aligning a lens carrier with the alignment frame, and aligning a ferrule with the alignment frame. Other methods, apparatus, and systems incorporating the apparatus are also disclosed.

Abstract: A method and structures for protectively enclosing and sealing optoelectronic modules having emitter or detector diode arrays aligned with optical fiber facets in optoelectronic transmitters and receivers. A non-hermetic enclosure provides mechanical protection of the components during alignment and assembly of the module. A substantially hermetic enclosure provides additional protection of optoelectronic components against airborne contaminants or moisture. The protective enclosures physically encompass the diode array chip with its delicate wire bonds and also provide a liquid containment dam for easier application of resin for protective encapsulation of the diode array chip. Dual resin encapsulation may include a first resin layer chosen for transparency and a harder setting covering layer. These protective variants can be implemented in different combinations offering varying degrees of protection of the optical components.

Abstract: At least one exemplary embodiment is directed to a driving unit which has a through-hole that guides a flexible printed board. A position of the flexible printed board with respect to the driving unit changes in an optic-axial direction in accordance with rotation of the driving unit, reducing the occurrence of image ghost caused by the flexible printed board.

Abstract: A camera mount, comprising a camera mounting portion, wherein a camera can be removably coupled to the camera mounting portion, such that a photographic plane of the camera is parallel to a photographic plane of the camera mounting portion; a rail portion, wherein the rail portion extends from the camera mounting portion substantially perpendicular to the photographic plane of the camera mounting portion; and a frame, wherein the frame is adapted to receive one or more reference scales such that a photographic plane of the one or more reference scales is parallel to a photographic plane of the camera mounting portion, and wherein the frame is coupled to the rail portion such that a photographic plane of the frame is parallel to a photographic plane of the camera mounting portion elements.

Abstract: A shutter device comprising a fixed member which has a plurality of electrodes arranged on a surface, a light-transmitting region which is provided in the fixed member, a light-shielding member which is able to move between two positions where the light-transmitting region is closed and opened, respectively, and which have a plurality of electret parts, and a drive circuit which periodically applies a voltage to the electrodes provided on the fixed member, thereby to generate an electrostatic force acting on the electret parts of the light-shielding member and to drive the light-shielding member.

Abstract: A camera has a shutter release button, held in an initial position, that is movable from the initial position to a full-pressed position via a half-pressed position. The camera has three detectors for detecting that the shutter release button is in the initial, half-pressed and full-pressed positions respectively. When the first detector detects that the shutter release button is displaced from the initial position, it is determined that the shutter release is being activated, so the camera starts preparatory operations for shooting. When the second detector detects the shutter release button in the half-pressed position, the camera completes preparatory operations for shooting. When the third detector detects that shutter release button in the full-pressed position, the camera carries out an actual shutter release to write image data on a memory card.

Abstract: In a printer comprising a paper container for containing a recording paper, the paper container has a base member mounted of a housing of the printer and a cover member rotatably pivoted on the base member via a pair of hinge structures. Each hinge structure has at least a first bearing portion formed on the cover member and having a first center hole, at least a second bearing portion formed on the base member and having a second center, a hinge pin inserted into the first center hole of the first bearing portion and the second center hole of the second bearing portion, a first and a second stoppers formed on the base member for facing both ends of the hinge pin with predetermined gaps. The second stopper has elasticity to be deformed when the hinge pin is inserted into the first and second center holes by applying a pressure thereto and to be recovered to a natural shape when the pressure is released so as to prevent escape of the hinge pin from the first and second center holes.

Abstract: Improved eradicating fluids and eradicable inks are disclosed. A color changing eradicating fluid is disclosed which includes a volatile base, a pH sensitive dye and an eradicating agent whereby the dye changes color as the volatile base evaporates thereby provided a visual indication to the user when the eradicating fluid is sufficiently dry and ready to receive a corrected marking. A non-color changing eradicating fluid having a more moderate pH is also disclosed. The combination eradicable and re-write ink is disclosed which features phosphoric acid (or phosphorus pentoxide in solution) along with an eradicable dye. A combination writing and correction instrument that combines a disclosed eradicating fluid and a combination eradicable and re-write ink is also disclosed.

Abstract: A writing instrument that includes a tubular body extending along a longitudinal axis between a rear end and a front end provided with an opening through which a writing tip is capable of protruding, a lateral button having at least one actuation face oriented radially outward and at least one first cam arranged inside the body, and a writing tip advancing mechanism that include a movable member movable in a longitudinal direction in the body. The movable member includes at least a first ramp inclined relative to the longitudinal axis, the lateral button is capable of remaining in a rest position in which the first cam is facing the first ramp, and the lateral button is capable of making a first tilting movement toward the inside of the body during which the first cam interacts with the first ramp and the movable member makes a first movement.

Abstract: A lead holding structure of a mechanical pencil where a predetermined lead holding force is maintained so that a lead does not move even if a writing pressure is repeatedly applied to the lead and where a so-called biting-off of a lead (break) is prevented without damaging the lead in repeatedly sending forward and backward operations.

Abstract: The present invention relates to a rotating retractable writing instrument, which is constituted in a simpler way and can thrust a mouthpiece and a writing core element smoothly to positions ready for writing. The writing instrument by the present invention comprises a rear outer cylinder 2, an inner sheath 4 unrotatably accommodated in the rear outer cylinder 2, a front outer cylinder 10 from which a mouthpiece 12 and a writing core element 13 can be thrust. A protrusion 45 for restraining rotating range, a refill sliding cam 42 and a mouthpiece sliding cam 43 are formed in the inner sheath 4. A refill sliding element 6 and a mouthpiece sliding element 7 are accommodated in the inner sheath 4. The mouthpiece sliding element 7 is connected to the refill sliding element 6. Further a connecting element 9 is connected to the inner sheath 4.

Abstract: Items such as writing implements comprise a housing which moves from a first configuration wherein a writing portion is at least partially disposed within a housing to a second configuration wherein more of the writing portion is disposed outside of the housing. In one version, upon the selective actuation of a release, at least two housing portions initially move away from each other while the writing portion moves from the first configuration toward the second configuration, the housing portions then move back toward each other, all in a damped motion. In the second configuration, at least a portion of the writing portion is further away from the hinge-type connection than in the first configuration.

Abstract: A device for packaging and applying a product includes a container to hold the product, with this container having an opening at its upper end, a wiper element engaged at least partially in the opening, an applicator including an applicator element carried by a rod of axis X, and a closure element for the container. The wiper element includes a sealing zone against which part of the rod is capable of coming into leaktight contact when the closure element is in the closed position, and a zone of greater deformability, located above the sealing zone, and which is capable of stretching axially when the rod is bearing against the sealing zone of the wiper element.

Abstract: A tension decoupler includes first rupture members, arranged in parallel to each other, and second rupture members, arranged in parallel to each other and parallel to the first rupture members. The first rupture members and the second rupture members are designed to break only when the load applied to the decoupler device reaches or exceeds a predetermined load value, and the second rupture members are designed to have sufficient fatigue strength as long as the applied load does not reach the predetermined load value.

Abstract: A fitting for transverse joining of two L-shaped sections is provided, each L-shaped section with a web part and a foot part. The sections are disposed with the web part back-to-back, being peculiar in that the fitting substantially includes a first flange and a second flange which are J-shaped and which in mutual contact are slidingly connected with a connection for constituting a largely C-shaped fitting with a gap of variable length for accommodating the two foot parts of the L-shaped sections. The fitting includes means for mutual fixation of the two flanges for retaining the length of the C-shaped fitting after receiving both foot parts in the C-shaped fitting.

Abstract: A universal joint component is used for connecting two members, such as a reflector and a lamp body. The universal joint component includes a shaft, an installation section formed on one end of the shaft, and a spherical head formed on the other end of the shaft. The spherical head includes a joint base, a top end, and at least one gap formed on a side of the spherical head between the top end and the joining base. The gap is formed of a groove or through hole so as to straddle a phantom line substantially passing through a center of the spherical head and perpendicularly intersecting a shaft axis of the shaft. Split head sections are defined by the at least one gap so that the split head sections flexibly deform when the spherical head is inserted into a spherical socket.

Abstract: A ball and socket joint for a motor vehicle, especially for the chassis of the motor vehicle, has a ball and socket joint housing (1), which has a joint opening and in which a bearing shell (5) made of an insulating material is arranged. A ball pivot (4), which is made of an electrically conductive material, has a joint ball (2) and a pivot (3), and which is mounted with its joint ball (2) rotatably and pivotably in the bearing shell (5) and projects from the ball and socket joint housing with its pivot (3) through the opening of the joint. An electrode (14) is arranged in the wall of the bearing shell (5) at a distance (?) from the joint ball (2), and the electrode (14) and the joint ball (2) are electrically insulated against each other via the bearing shell (5). Furthermore, between the joint ball (2) and the ball and socket joint housing (1), the wall has at least two layers (12, 13) arranged one after another, between which the electrode (14) is arranged.

Abstract: Composite structural members are provided including a fitting and a tubular shaft. The fitting has a coupling region defining at least one recessed portion bounded by one or more non-recessed portions. The recessed portion may extend circumferentially around the fitting to form a neck. The tubular shaft has a mating region and defines a lumen in which the fitting is disposed. The mating region of the shaft mates with the coupling region of the fitting to create interference between the shaft and fitting. Adhesive may be disposed between the mating region of the fitting and the coupling region of the shaft. The mating region of the shaft may be partially and proximately surrounded by a reinforcing member, and a sleeve may be coupled substantially concentrically to the shaft for discouraging separation of the reinforcing member and the mating region of the shaft. In some cases, adhesive is disposed between the reinforcing member and sleeve.

Abstract: A connecting butt strap connecting in series two wire cable trays (10, 20) consisting of two different types of wires, warp wires and weft wires, the connection of the two cable trays (10, 20) being produced via their abutted weft wires (12, 22): it comprises two clip-on elements adapted to clip the butt strap (30) on each of the abutted weft wires (12, 22), one of which enables the butt strap to be mounted rotatable (30) on one cable tray (10) and the other enables the two cable trays (10, 20) to be assembled, the butt strap (30) further comprising locking elements adapted to co-operate with a warp wire of the other cable tray (20) and to lock the butt strap (30) in its connecting position.

Abstract: The invention relates to an infill which can be inserted into a bollard footing hole. The infill is designed such that it allows a bollard to be fit over it, and the infill fits within a footing hole. Methods of covering a footing hole are also bought.

Abstract: A flexible, porous and durable tree well skirt and a sidewalk structure are made of a cushion base of butadiene rubber and a wear layer of ethylene propylene diene monomer (EPDM). The butadiene rubber is mixed with an isocyanate polyurethane binder and spread on the ground around the tree to form the cushion base of the tree well skirt. The EPDM is mixed with an isocyanate polyurethane binder and spread over the cushion base to form the wear layer. The cushion base and wear layer structure used for a sidewalk is spread over a stabilized porous base.

Abstract: An environmental protective electrical power generating system is formed by a penstock connected at its opposite ends to a large sewer for conveying waste water from feeder pipelines to a sanitary treatment station. Sewer waste water is propelled through the sewer line by pumping equipment which simultaneously pulverizes most large objects carried by the waste water. The waste water is diverted, through a control gate, into the penstock where it flows through and operates one or more water-operated turbines. The turbines are operatively connected to electrical power generators for producing electrical power and dispersing the power through an electrical power transmission system. Depending upon the size of the sewer pipes, the volume of liquid flowing there-through, and the turbine and generator equipment, electrical power is generated without affecting the environment or ecology and without the use of fossil fuels.

Abstract: A pipeline tool for use within a pipeline comprises a tool body with an internal flow bore, a swellable component disposed about the tool body, and a temporary seal disposed internally of the flow bore. The pipeline tool may further comprise a tracking device attached to the tool body, wherein the tracking device comprises a mechanical fixture, or an emitter that emits a signal that can be tracked.

Abstract: A method and system for attaching a TLP to its tendons using pull-down lines to rapidly submerge the hull to installation draft while compensating for inherent hull instability during submergence and to provide motion arrest and aid in station keeping. The system includes tensioning devices mounted on the TLP, usually one for each tendon. Each tensioning device is equipped with a pull-down line which is connected to the corresponding tendon. The TLP hull is submerged to lock-off draft by applying tensions to the pull-down lines connected to the top of the tensions, or by a combination of applying tensions to the pull-down lines and ballasting the hull. As the tensioners take in pull-down line, the hull submerges, i.e. the draft increases.

Abstract: A process for stabilizing chromium in a chromite ore processing residue (COPR) comprises the steps of adding an acid to consume the excess alkalinity of the COPR, resulting in a pH of less than 10; and adding a chemical reductant to the COPR to convert any hexavalent chromium present to trivalent chromium. A source of sulfate may be added to the COPR to reduce heave potential and improve its geotechnical stability. Treated COPR may be encapsulated in a material suitable to prevent contact between the COPR and water, such as an asphalt.

Abstract: A retaining wall structure built of wall-building units such as sand/soil bags or hardenable building units such as clay bricks has interconnecting members placed between adjacent courses of units to attach the adjacent courses to one another. The interconnecting members have projections on both sides which protrude into the wall-building units of the adjacent courses. Sheets of geogrid preferably extend from between some of the courses of wall-building units into the fill retained by the wall-building units. Projections on the interconnecting members protrude through holes in the geogrid sheet, anchoring the wall face to the reinforced soil structure.

Abstract: A tubular mesh enclosure (1040) formed from a mesh material having a nominal opening size of less than 0.5 inches. The mesh enclosure has opposing pair of ends (1042, 1044) with at least one end (1044) being sealed. A filling (1010) is surrounded by the tubular mesh enclosure with the enclosure defining a length and a generally non-circular longitudinal cross-section defining a major width. A ratio of the length to the width greater than approximately 40.

Abstract: A device for conveying coating powder has an inlet valve, an outlet valve and a powder conveying chamber made from a flexible conveying chamber hose. The powder conveying chamber is arranged between the inlet valve and the outlet valve and has a conveying air inlet. In addition, the volume of the powder conveying chamber can be modified by a deformation of the conveying chamber hose.

Abstract: A milling tool includes a cutting tool insert, roughly plate-shaped and having a rake face on an upper face and a flank on a side face and a main cutting edge at an intersection ridge line part at the intersection of the rake face and the flank, fitted in the periphery of a substantially cylindrical holder removably and so that an axial rake angle of the cutting edge ridge line of the main cutting edge is positive. When the cutting tool insert is rotated about the axis of rotation of the holder, the shape of the locus of rotation of the main cutting edge in a section parallel to the axis of rotation is made an approximate circular arc shape swelling outward with progress from the ends to the center.

Abstract: A chuck for use with a manual or powered driver including a generally cylindrical body having a nose section and a tail section. The tail section defines an axial bore formed therein to mate with the drive shaft of the driver and the nose section defines an axial bore formed therein and a plurality of angularly disposed passageways formed therethrough and intersecting the axial bore. A plurality of jaws is slidably positioned in each passageway and each jaw defines a jaw face formed on one side and threads formed on the opposite side. A nut is disposed about the body for rotational movement with respect to the body and is in driving engagement with the jaw threads. A generally cylindrical front sleeve overlays the nose section of the body. A generally cylindrical nut retainer is disposed about the body and includes a frusto-conical portion.