Abstract: The invention relates to a guide vane (17) for a turbomachine (1), in particular a gas turbine guide vane, in which the platform (48) has a separating region (50), which is embodied as a separate component. This has, in particular, advantages with respect to the simplification of cast blade/vane (17) in terms of manufacturing technology, with respect to the variability of a material selection, the quality of a protective coating to be applied and efficient cooling.

Abstract: A blower impeller employing curved radial blades defining an arc chord of 60 degrees, which circulate the air entering the circulation section to tangentially force the same through an exhaust section, wherein the multiple, overlapping, blades are of a modified Archimedes spiral design providing greater efficiency and lower generated noise.

Abstract: A pneumatic pump control system for sequentially switching on and off an electrically operated pump disposed in a waste water liquid storage tank The pneumatic pump control system comprises a pneumatic pressure accumulator that is disposed within the liquid storage tank at a predetermined level. The pneumatic pressure accumulator is a dome-type that defines an interior air chamber for containing air, and a lower opening disposed at an elevation that represents a zero reference level within the tank. The lower opening is in communication with the liquids in the liquid storage tank when the level of liquid is as high as the lower opening. A pressure transducer is operatively connected to the pneumatic pressure accumulator for communication with the interior air chamber to measure the differential air pressure between the air within the interior air chamber and the upper layer of air within the liquid storage tank.

Abstract: An air-operated, submersible pump features a bladder-controlled inlet applicable to water pumping or fluid separation, including the recovery of viscous hydrocarbon products. The inlet area fluidly penetrates through a portion of the wall of the pump, and the bladder, disposed within the pump body, is supported in overlying registration therewith. A pressure-operated valve in fluid communication with the discharge port facilitates a refill mode of operation, wherein fluid surrounding the pump flows into the pump body through the inlet area, and a discharge mode of operation wherein the air inlet is pressurized, causing the bladder to inflate and seat against and seal off the inlet area, and fluid which flowed into the pump body to be discharged through the discharge port. In the preferred embodiment, the inlet area comprises a plurality of apertures formed through the wall of the pump body arranged as one or more linear arrays lengthwise along the pump.

Abstract: A multistage piston compressor includes a case and a suction chamber and a discharge chamber provided in the case. A rotary shaft is supported in the case. A valve plate provided in the case includes suction ports and discharge ports. A plurality of bores are provided at predetermined intervals about the axis of the shaft. Pistons are housed in the bores and compress refrigerant by reciprocating in accordance with the rotation of the shaft. An intermediate chamber connects a discharge port with a suction port. The refrigerant is compressed in stages by passing through a plurality of bores via the intermediate chamber. Compression chambers are defined between the pistons and the valve plate. A communication passage is provided for setting the pressures acting on the rear faces of the pistons to an intermediate pressure between the suction pressure and the discharge pressure.

Abstract: The invention concerns a sealing- and cooling system for a submersible machine, such as a pump or a mixer. The device comprises an easily replaceable (4) containing mechanical face seals with an intermediate room for a barrier liquid where a circulation pump (10) is arranged for circulation of said liquid along the seals as well as around the driving unit (1) of the machine. During circulation, the liquid passes a first narrow gap (6) around the driving unit where heat is absorbed and a second narrow gap (7) where heat is discharged.

Abstract: A tightly closed casing has an inside space for storing coolant gas. A block is accommodated in this casing. A motor includes a stator and a mover. A piston is connected to the mover of the motor. A movable element includes the mover of the motor and the piston. A stationary element includes the stator of the motor and the block. An elastic element has a portion fixed to the movable element and another portion fixed to the stationary element. A cylinder is shiftable in an axial direction with respect the block. A shifting device shifts the cylinder in the axial direction.

Abstract: A centrifugal compressor that includes a low speed shaft connected to a drive motor and a high speed shaft containing an impeller. The high speed shaft is coupled to the low speed shaft by a gear train. The low speed shaft is supported by hydrodynamic, oil lubricated, bearings while the high speed shaft is supported by roller and ball bearings. Any vibrational stresses developed in the high speed shaft are dampened by the low shaft system through the gear train coupling.

Abstract: A golf ball mold having non-planar parting lines and a method for forming a cover using such mold are disclosed herein. The mold has a pair of mold halves, and each mold half has a non-planar perimeter. The non-planar perimeter has alternating extensions and indentations. Each of the extensions has an apex that may be curved, and each of the indentations has a depression that may be curved. The mold may be used in compression molding, injection molding and cast molding a layer on a golf ball. The mold may be used to produce golf balls having non-dimpled surfaces.

Abstract: An injection molding apparatus and system are provided in which the rate of material flow during the injection cycle is controlled. According to one preferred embodiment, an injection molding system is provided that includes an injection molding machine including a hydraulic power source, a manifold for distributing material injected from said injection molding machine to a plurality of gates leading to one or more mold cavities, and a controller to individually control respective rates at which material is injected through said gates during an injection cycle. The controller is coupled to the hydraulic power source and the hydraulic power source supplies hydraulic power to both the injection molding machine and to control said respective rates.

Abstract: A device for producing disposable lenses providing a concave mold and a convex mold for each lens, filing the concave mold with liquid starting material for the lens, and positioning the convex mold so as to enclose the starting material includes a first carousel, a first station, which is arranged along the first carousel, for depositing the concave mold at a set position on the carousel, a second station for filling the deposited concave mold with starting material for a lens, a third station for depositing the convex mold so as to enclose the starting material, and a fourth station for removing the assembly having concave mold and convex mold with enclosed starting material the first carousel.

Abstract: A mold and an assembly of a device for cooling a mold include an annular channel system that surrounds the mold. The channel system has a channel having at least one entrance for supplying a cooling medium to the interior of the channel. The channel has at least one mold-facing outlet aperture for the cooling medium. The channel is adapted for substantially one tangential flow direction of the cooling medium around the mold.

Abstract: A lighter is provided. The lighter includes two spaced apart nozzles. Upon manual actuation of the lighter, each nozzle produces a separate flame, and the flames intersect to produce a single flame in region spaced apart from the body of the lighter.

Abstract: A biogas flare system for burning biogas generated primarily by a landfill includes at least one burner for igniting a mixture of biogas and air. A main supply line supplies a mixture of biogas and air to the burner. A biogas supply line feeds biogas into the main supply line. An air supply line feeds air into the main supply line. A mixer structure mixes the biogas and air prior to the mixture being supplied to the burner.

Abstract: A burner configuration with primary and secondary pilot burners is described. The burner configuration is used in a firing installation, in particular a gas turbine combustion chamber, and has a main burner and, disposed centrally within it, a primary pilot burner used for igniting and/or for stabilizing the combustion of the main burner. For additional stabilization, for reducing rumble noises in the firing installation and for avoiding the possible flashback of the flame in a partial region of the burner, which can then sometimes occur, a plurality of outlet openings, which together form a secondary pilot burner, are disposed in the outlet region of the main burner. The flames of the secondary pilot burner surround the main flame like a ring and additionally stabilize the operation under different load conditions.

Abstract: A catalyst combustion apparatus, includes: a fuel feed course for feeding liquid fuel; an air feed course for feeding air; a mixing unit for mixing fuel to be fed from the fuel feed course with air to be fed from the air feed course; a vaporizing unit for heating mixture-obtained by mixing in the mixing unit to vaporize the liquid fuel; a catalyst heating unit disposed on the downstream side of the vaporizing unit in contact with or in close proximity to the vaporizing unit in terms of conduction of heat, for carrying an oxidation catalyst component; and a catalyst combustion unit provided on the downstream of the catalyst heating unit, having a multiplicity of conductive holes, and the vaporizing unit is capable of utilizing heat from the catalyst heating unit.

Abstract: A crucible for melting a silica for fusion of said silica into a desired shape. The crucible having a main body with inner and outer surfaces comprised of a refractory material. In addition, at least a portion of the inner surface includes a barrier layer comprised of a material selected from rhenium, osmium, iridium, and mixtures thereof.

Abstract: Infrared oven for heating a plurality of preforms and comprising: a conduit through which said preforms move, a flow of outside air that flows through said conduit from an intake mouth to an exhaust mouth under the action of a blower, a plurality of infrared lamps irradiating the preforms in said conduit, in which a reflective surface is arranged downstream of said lamps and is provided with apertures through which the flow of outside air passes prevailingly. The axis of the preforms is oriented in a manner that is substantially perpendicular to the direction of flow of said outside air. The infrared lamps are arranged substantially downstream of the preforms, and are separated from each other by appropriate intervals through which said flow of outside air passes, in which said flow of outside air first passes through said intervals separating said preforms and then through said intervals provided between said infrared lamps.

Abstract: An orthodontic bracket assembly comprising an orthodontic bracket and a powered actuator mounted to the bracket. The actuator can be used to provide relative movement between a tooth (or set of teeth) and another object, such as an archwire or another tooth (or set of teeth). Preferably, the actuator is a micro electromechanical system (MEMS) having a size that will not significantly interfere with the comfort of the patient.

Abstract: An interactive, software-based treatment planning method to correct a malocclusion is described. The method can be performed on an orthodontic workstation in a clinic or at a remote location such as a lab or precision appliance manufacturing center. The workstation stores a virtual three-dimensional model of the dentition of a patient and patient records. The virtual model is manipulated by the user to define a target situation for the patient, including a target archform and individual tooth positions in the archform. Parameters for an orthodontic appliance, such as the location of orthodontic brackets and resulting shape of an orthodontic archwire, are obtained from the simulation of tooth movement to the target situation and the placement position of virtual brackets. The treatment planning can also be executed remotely by a precision appliance service center having access to the virtual model of the dentition.

Abstract: A system and method for dispensing prophylaxis paste during dental cleaning procedures which includes a flow control valve, which is actuated by pressure between the prophy cup and the tooth, and also includes a source of prophylaxis paste delivered under pressure.

Abstract: An oral care system includes a universal handle which is configured to hold any of a plurality of oral hygiene instruments, and a lavage source to apply lavage solution through the oral hygiene instruments to facilitate complete cleaning of a patient's mouth. Preferably, the universal handle and lavage source are configured to be held in the user's hand with both suction and lavage being controlled manually. The orally hygiene instruments attachable to the universal handle typically include a lavage toothbrush, at least one catheter and at least one swab, to thereby enable cleaning of the teeth, gums, soft tissue and crevices therebetween.

Abstract: A propelled-pivoting motion base with a rotating disc that provides an occupant with an unlimited range of motion on the horizontal plane of movement and a method for manipulating the inertia of a center mass by physically following a natural path of motion as it occurs in realtime. The vehicle chassis base is propelled and steered upon and along the available operating floor area using two main drives which alternatively propell and pivot each drive assembly in a manner that shifts the center mass and its' inertia when changing directions on the horizontal plane of movement along its' realtime motion path, thus reducing the computational resources normally needed to remove un-natural movenment.

Abstract: An architectural paint color display system comprises a plurality of displays each having a two dimensional array of architectural paint color samples showing paint colors from only one of a plurality of non-overlapping contiguous portions of a color space. Each of such color space portions is defined as the space of all colors within a band of hues within the color space. Each of said color space portions is exclusively represented by one of the displays, and each of the displays represents only one of said color space portions, such that there is a one-to-one correspondence between displays and color space portions. The paint color samples have in one dimension of the arrays an increasing value and in the other dimension of the arrays an increasing chroma. The displays are preferably arranged in a three-row or six-row matrix. Each row of the matrix displays color space portions in the same sequence that such portions appear in the color space.

Abstract: A computer-implemented techniques for improving reading proficiency. A segment of text is displayed on a video screen. An audio narration of the displayed text is generated from stored audio data derived from a custom reading in natural voice of the entire text segment. The words in the displayed text are highlighted during the audio narration, with each word being highlighted in synchronism to its narration. A visual track is created through the text by highlighting the current word, the previously narrated words and the yet-to-be-narrated words with respectively distinctive highlighting. A phonetic pronunciation with synchronized highlighting of the phonemes is also available. In addition, contextual word definitions are provided.

Abstract: A tongue lifting tool and method for using such tool are provided. The tool has a tongue holder for supporting a patient's tongue and a holding portion coupled to the tongue holder.

Abstract: A method and apparatus for a computer-based teaching system includes modifying a text file by inserting a first predetermined character at a first end of a first selected information element, and also inserting a second predetermined character at a second end of the first selected information element. A blank box is created in an area defined by the first and second predetermined character. The blank box replaces the first selected information element. Data is stored in a memory, with the data representing the first selected information element. A user interface is provided, which enables selective display of either the blank box or the first selected information element.

Abstract: The present invention relates to a memory card connection arrangement primarily including a top cover, a side frame and a bottom plate. The top cover contains a plurality of joint flanges and locking grooves, the side frame a plurality of joint holes at the position opposite to the joint flanges and the bottom plate a plurality of hooks at the position opposite to the locking grooves. In assembly, the joint flanges are engaged into the joint holes so that the top cover and the side frame are attached to each other while the hooks are hooked in the locking grooves so that the bottom plate and the side frame are connected to each other. Accordingly, a stable state in whole is achieved and the rims thereof are overlapped to avoid the electromagnetic interference.

Abstract: An electrical plug, for example an AC adaptor, has a pair of pins that may be moved between an operative position and a non-operative position in which the pins are received within slots formed in a body. When in the non-operative position the pins are completely received within the slots and a mechanism is provided for releasing the pins from the slots when it is desired to move the pins into their operative position. The pins pivot about a pivot axis located adjacent an edge of the body so that the pins pivot outwardly towards the edge into their operative position.

Abstract: A connector for testing shunted electrical terminal assemblies includes a selectively actuatable shunt displacement member for moving a terminal shunt between a shunted and unshunted position in response to a control signal. The connector allows for the testing of shunted circuits and connectors in a shunted and unshunted position. The connector is readily adaptable to systems for automated testing of airbag actuators and the like.

Abstract: A socket is described for a lighting assembly having a socket body and an electrical connector with a seal in the socket to seal around a light source. The socket is preferably configured to be independent of the mounting arrangement for the lighting assembly. An insulator is also disclosed for a lamp such as a fluorescent lamp having a body which covers the contact on the lamp so as to form a recessed lamp conductor. The combination of a socket and lamp insulator is also disclosed for providing a socket and insulator assembly for reducing the possibility of injury or damage due to high open circuit voltage, environmental effects and the like. Additionally, a lighting assembly is disclosed incorporating the insulator, socket and mounting arrangements.

Abstract: An electrical socket connector (1) comprises a base (2), a cover (3), and a locker means (5). The base has a plurality of contact passageways (21) defined from an upper surface (27) to a bottom surface (28) thereof and at least a first protruding portion (24) on one side thereof. The first protruding portion has a first receiving slot (26) defined therein. A plurality of contacts (4) are received in the passageways of the base. The cover is moveably mounted on an upper surface of the base and defines a plurality of receiving holes (31) in alignment with the contact passageways adapted to receive corresponding pins of an IC module to extend therethrough into the passageways. The locker means comprises a stopper portion (53) and a locker portion (52) extending from the stopper portion.

Abstract: An optical fiber connector assembly includes a body (22) with passages (26) that hold optical fibers and a backshell (24) that can be removed and slid along the optical fiber cable to provide access to the fibers so a selected fiber can be removed while the rest of the fibers continue to carry signals. The removable backshell carries a mechanism (150) that can be manually operated to unlatch the connector from a housing (12), despite removeability of the backshell. The mechanism includes a cam (152) rotatable about the cable-receiving aperture (32) in the backshell and a cam follower (142) that is pushed forwardly by rotation of the cam. The cam follower presses forwardly against a pair of release elements (130) in the body to cause them to deflect a pair of latch arms (120) out of engagement with shoulders (124) of the body so the body can be pulled rearwardly out of the housing.

Abstract: An adaptive booster cable is connected with two pairs of clips, wherein the two pairs of clips are respectively attached to two batteries to transmit power from one battery to the other battery. The adaptive booster cable includes a polarity detecting unit connected to each clip, a switching unit and a current detecting unit both provided between the two pairs of clips. After the polarity of each clip is sensed by the polarity detecting unit, the switching unit generates a proper connection between the two batteries. Therefore, the positive and negative terminals of the two batteries are correctly connected based on the detected result of the polarity detecting unit.

Abstract: A hermetic or semi-hermetic terminal assembly having a cup-shaped body portion with a generally flat bottom wall and at least one opening in the bottom wall defined by an annular lip extending into the cup. One current conducting pin extends through each opening and beyond the lip on both ends of the body portion, the inner end of the pin being on the dish side of the cup-shaped body portion, and the outer end on the outer side of the body. A resilient plastic material is molded into place within the body portion to bond the pin to an inside surface of the lip with a hermetic seal. The plastic extends beyond the face of the body portion and bonds to the pin to provide the desired air path between the respective pins and each other and/or the face of the body portion.

Abstract: An input/output connector (1) has an insulative housing (10), a plurality of conductive contacts (20) retained in the insulative housing for surface mounting to a printed circuit board and a shell (30). The insulative housing has a hole (130) extending in a front-to-back direction and a recess (131) communicating with the hole. The shell includes a top plate (31), a bottom plate (32) and a pair of side plates (33) connecting the bottom plate and the top plate. The bottom plate has a pair of cantilevers (320) extending perpendicularly and rearwardly to be inserted into the hole of the insulative housing and then be bent to be received in the recess of the insulative housing for preventing the shell from bulging downwardly.

Abstract: A jack includes a body having a plurality of electrically conductive spring contacts and a first and second plurality of connection locations, and a plurality of conductive pins secured to the body and projecting from walls of the body. A circuit board is secured to the body and provides circuit paths to make electrical contact between the spring contacts and the connection locations. The jack is usable in a chassis to form a jack and chassis assembly, wherein the chassis has an open front face and an open back face. The open back face permits accessibility to the projecting pins of the jack, such that it may be wire connected. Secured to the chassis is a circuit board having a plurality of sockets. The sockets provide power and ground connections to each jack. Methods of assembling and providing DSX connections include structures as described herein.

Abstract: The invention relates to a connector and connector system between a first substrate (1) which may be, for example, a back plane with a male connector (2), and a second substrate (3) on which a corresponding female connector (4) is mounted. For centering and coding, the first substrate has a perpendicularly projecting guide pin (6) arranged thereon on which a coding key (7) is mounted which, during connection of first substrate (1) and second substrate (3), is introduced during the mating operation into a coding box (8) having a corresponding complementary coding key (11). The guide pin (6) is clampingly retained in coding box (8) via a spring contact (10). With short centering pins, centering of the guide pin (6) in coding box (8) takes place by the cooperation of coding key (7) and complementary coding key (11).

Abstract: A pull station for an alarm includes a housing with a handle mounted for sliding movement within the housing. The housing includes a window for a user to access the handle for forcibly sliding the handle in a vertical direction. A latch is rotatably mounted to the handle and spring biased to rotate to a locked position upon sliding movement of the handle. The latch has a portion which moves to bear against a stationary element of the housing to establish the locked position. The housing can be opened to reset the handle without changing the state of the alarm. Closing of the housing automatically resets the alarm. An attached terminal block includes a plurality of U-shaped terminal elements each having a screw terminal, a solder lug and a press pin.

Abstract: The main and collector terminal studs of a dynamoelectric machine are coated with a powder resin to form an electrical insulator between the rotor and the stud. The collector terminal stud includes a gasket which is compressed against the powder coating on the stud to form a seal with the powder coating preventing leakage of hydrogen gas through the seal. A fluidized bed containing the resin powder disperses the powder in a mist. By charging the powder, an electrostatic potential is provided between the stud and charged powder whereby the powder adheres to the stud. Alternatively, the stud will be preheated and dipped into a bed of powder whereby the powder adheres to the stud. The powder resin is subsequently cured.

Abstract: An exhaust catalyst assembly for an outboard motor includes a branched passage connecting the main exhaust passages with a catalyst device. The outboard motor can include various exhaust passages and features for controlling and discharging the flow to and from the catalyst device.

Abstract: A paddle support assists in rowing a vessel. The paddle is retained in the upper portion of a support that has a base section that rests, preferably unattached or at least readily releasably attached on the floor of a vessel. The support allows the paddle to be freely manipulated unencumbered by attachments to the vessel. The paddle support may be attached to webbing suspended across an opening in the vessel so that a base of the support is attached near the center of the webbing. The paddle support may also be attached to a harness suspended across an opening in the vessel so that the upright support is attached near the center of the harness. The use of the webbing or harness facilitates use of the support with a watertight skirt or covering stretched over the opening of a vessel.

Abstract: A buoyancy system for deep-water risers of a deep water floating platforms includes an ecto-skeleton formed by a plurality of members to withstand lateral and bending loads, and a buoyant vessel disposed in an interior cavity of the ecto-skeleton to resist pressure loads. The member of the ecto-skeleton can include hollow tubular members having hollow interiors with a buoyant material disposed in the hollow interiors of the tubular members.

Abstract: To reuse glass used in a flat panel display, processing suitable for global environment such as processing of separating a lead component must be realized. A disassembly processing method for a flat panel display having a structure in which a face plate and rear plate mainly containing glass are airtightly joined via a frame with frit glass is characterized by including the step of separating the face plate and rear plate joined with the frit glass. The separation step is characterized by separating the face plate and rear plate by cutting, dissolution, or melting.

Abstract: A field emission device (FED) and a method for fabricating the FED are provided. The FED includes micro-tips with nano-sized surface features, and a focus gate electrode over a gate electrode, wherein one or more gates of the gate electrode is exposed through a single opening of the focus gate electrode. In the FED, occurrence of arcing is suppressed. Although an arcing occurs in the FED, damage of a cathode and a resistor layer is prevented, so that a higher working voltage can be applied to the anode. Also, due to the micro-tips with nano-sized surface features, the emission current density of the FED increases, so that a high-brightness display can be achieved with the FED. The gate turn-on voltage can be lowered due to the micro-tip as a collection of nano-sized tips, thereby reducing power consumption.

Abstract: A method for patterning an indium-tin-oxide (ITO) film by using a chemically amplified resist, causing no resist separation nor adhesion degradation even if the ITO film is exposed to white light after the resist development. An amorphous ITO film is formed on a wafer. A negative chemically amplified resist is applied directly to the ITO film, and the resist film is exposed and developed. The structure having a resist pattern on the amorphous ITO film is free from resist separation and adhesion degradation even if the resist pattern is exposed to white light, and therefore the later manufacturing steps are not adversely affected, enabling proper visual inspection. After the structure is judged to be acceptable at the visual inspection, the amorphous ITO film is etched using the resist pattern as a mask, and then the resist pattern is removed.

Abstract: A method of manufacturing a plasma display panel, which comprises the steps of filling a barrier rib-forming paste containing glass frit in a barrier ribs-forming intaglio and concurrently forming a paste layer having a constant thickness on the intaglio, superimposing a substrate on the barrier ribs-forming intaglio filled with the barrier rib-forming paste containing glass frit to thereby transfer the barrier rib-forming paste onto the substrate, and heating the barrier rib-forming paste that has been transferred to the substrate, thereby burning out existing organic components and concurrently sintering the glass frit to thereby form the barrier ribs and dielectric layer. The plasma display panel manufactured by this method is featured in that the barrier ribs and the dielectric layer are formed using the same barrier rib-forming material containing a low melting point glass frit.

Abstract: A method for attaching a faceplate and a backplate of a field emission display device. Specifically, one embodiment of the present invention discloses a method for protecting a silicon nitride passivation layer from reacting with a glass frit sealing material that contains lead oxide during an oven sealing or laser sealing process. The passivation layer protects row and column electrodes in the display device. A barrier material fully encapsulates the silicon nitride passivation layer. In one embodiment, silicon dioxide is the barrier material. In another embodiment, spin-on-glass is the barrier material. In still another embodiment, cermet is the barrier material.

Abstract: The invention relates to a method of connecting workpieces which is suitable notably for connecting an anode rod (5) to an end plate (6) of a rotor sleeve (7) in a rotary anode X-ray tube where on the one hand adequate strength is required and on the other hand an as small as possible cross-section of the anode rod so as to realize a heat barrier. The method is characterized mainly in that the objects are connected to one another by friction welding and that the cross-section is reduced, that is, outside a connecting zone in which the friction weld is situated, in such a manner that the strength of the connecting zone is at least slightly greater than that of the segment of reduced cross-section.

Abstract: The present invention relates to a winding device and a flying toy ornithopter device which employs the winding device. The flying toy ornithopter comprises a hollow body which simulates the appearance of a bird, insect or flying machine. A pair of wings are provided which oscillate, the wings are powered by the stored energy of a wound rubber band. One end of the rubber band is connected to a hook mounted in the tail of the hollow body, the other end of the rubber band is mounted to a winding device mounted near the head of the hollow body. The winding device comprises a frame which has a generally oval shape and conforms to the cross-sectional of the hollow body to mount therein, a central annular bore and a pair of lugs located at the periphery of the frame to which the wings are attached; a pin projects from the frame toward the front of the hollow body for the attachment of a locking lever.