Abstract: A liquid discharging method for discharging liquid, which uses the pressure exerted at the time of creating each of bubbles in liquid in a bubble generating area, is arranged to provide two bubble generating areas for generating bubbles in such a manner as to enable these areas to face each other at least partly, hence discharging liquid by means for the pressure thus exerted in the bubble generating areas. In this way, it becomes possible to increase the amount of liquid discharged, as well as to enhance the durability of the movable members, while stabilizing the discharge of liquid from each of the discharge openings.

Abstract: A thin film structure is fabricated using photolithographic techniques and includes a plurality of substrates defining a resistor film, a conductor film and a passivation layer. The resistor film is etched to provide a plurality of individual heaters. The conductor film is etched to provide a plurality of conductive traces. At least one passivation layer covers the conductor film. A plurality of electrical contact pads are also formed that extend through etched holes in the passivation layer so that the electrical contact pads make electrical contact with the conductive traces. A nozzle plate is attached to the thin film structure. The nozzle plate has a plurality of individual nozzle orifices and also defines a plurality of corresponding ejection cavities for receiving ink from an ink reservoir via capillary action.

Abstract: Drop-on-demand ink jet printing apparatus comprises a nozzle on a nozzle axis; an ink chamber communicating with the nozzle, a piezoelectric actuating structure, said structure extending around the nozzle axis and extending in the direction of the nozzle axis; an actuating surface facing the nozzle, said structure being actuable to move said actuating surface in the direction of the nozzle axis to effect droplet ejection through the nozzle; and electrodes for applying an actuating electric field to the actuating structure.

Abstract: An inkjet device ensuring reliable and stable ink ejection is disclosed. A plurality of ejection electrodes are arranged in a housing having an ink chamber containing ink including toner particles and a gate electrode plate is placed at a predetermined distance from the ejection electrodes. The gate electrode plate has a slit formed such that the ejection electrodes are directed to the slit and an ink drain coupled to the slit for draining ink from the slit.

Abstract: By manipulating a relative potential relationship of potentials by voltages applied to selected electrodes, nonselected electrodes and an opposed electrode 20 among a plurality of record electrodes 13a through 13z installed at vicinities of an opening portion 11 of a head, ink is injected, printing of high resolution is made possible and by using a dispersing type ink and changing polarities of the voltages applied to the opposed electrode 20 and the record electrodes, density of injected ink is made variable.

Abstract: A printhead mainly includes at least two ink supply holes on a single semiconductor substrate, a first signal processing circuit laid out at at least one corner of the semiconductor substrate to arbitrarily select a heater for heating the ink, and a second signal processing circuit, other than the first signal processing circuit for arbitrarily selecting a heater, that realizes a function without dividing an arrangement. The lengths of signal lines are minimized to realize a printhead free from any malfunction.

Abstract: A printhead for an inkjet or like printing apparatus having a passivation layer of varied thickness. The passivation layer is relatively thin over the ink expulsion element to reduce the energy required to expel ink. The passivation layer is relatively thick over other regions of the substrate, particularly those regions in which circuitry or the like is provided. The increased thickness over the circuitry protects against capacitive coupling and the like. Methods of forming the varied thickness passivation layer are also disclosed.

Abstract: A liquid ejecting head ejects liquid by generating a bubble. The head includes a first liquid flow path for direct fluid communication between a first common liquid chamber and an ejection outlet, a second liquid flow path having a heat generating element for applying heat to the liquid to generate a bubble in the liquid, and a supply path for supplying the liquid to above the heat generating element from an upstream side of the heat generating element in a direction along the heat generating element. A movable member is disposed between the first and second flow paths, faces the heat generating element, and is displaced to a side of the first liquid flow path because of pressure generated when the heat generating element is driven, and has a fulcrum and a free end located downstream of the fulcrum. A guide path is provided in which the liquid flows above the heat generating element in the second liquid flow path.

Abstract: An ink jet recording head includes a plurality of discharge ports for discharging ink, a plurality of ink flow paths in communication with the plurality of discharge ports, a plurality of substrates including discharge energy generating elements for providing discharge energy for discharging ink, a supporting member for supporting a plurality of substrates in an arranged state, and a ceiling plate member for forming the plurality of ink flow paths by being bonded to a plurality of arranged substrates.

Abstract: An ink jet printing apparatus includes an ink jet head having a plurality of nozzles for respectively ejecting ink drops, a plurality of ink chambers communicating with the nozzles, and a plurality of electromechanical conversion elements corresponding to the respective nozzles. The volume of the ink chamber of the non-drive channel is increased by the influence of the drive channel adjacent thereto, and thereby undesired ejection of the ink drop occurs. To solve this problem, a drive energy set for ejecting the ink drop is applied to the piezoelectric elements of the drive chambers n−1, n+1 and a reduced drive energy set for not ejecting the ink drops is applied to the piezoelectric element of the non-drive channel n.

Abstract: The present invention is a constant pressure ink supply for use in an inkjet printing system. The ink supply includes a flexible ink reservoir for containing ink, an ink outlet, and a spring which has an expanded position, and a contracted position. The ink supply is in fluid communication with an inkjet printhead. The flexible ink reservoir is disposed and arranged to engage the flexible ink reservoir as the spring transitions from the expanded position to the contracted position thereby rolling the flexible ink reservoir and the spring together to produce fluid at a substantially constant fluid pressure at a fluid outlet.

Abstract: A multi-compartment ink-jet cartridge body structure, which includes a unitary body having a plurality of ink reservoir compartments. Each compartment includes an outlet port through which ink passes to feed the ink to an ink-jet printhead nozzle array. The body further includes a printhead nozzle array mounting region, and an ink manifold structure including a plurality of corresponding ink channels each leading from a corresponding outlet port to a feed opening formed at the printhead mounting region. The body and manifold structure are formed as a unitary one-piece structure. A lid is attached to the unitary body to cover the compartments. The body includes an external wall, and an access opening is formed in the wall adjacent the manifold structure. A seal structure attached to the body for sealing the access opening. The body structure can be fabricated by a plastic material using an injection molding process.

Abstract: An ink jet printhead is provided with an orifice plate connected to the barrier layer, spaced apart from the substrate second major surface, enclosing the ink manifold, and defining a plurality of orifice apertures, each associated with a respective ink energizing element, wherein the orifice plate has a planar plate defining the plurality of orifice apertures and at least one groove. The at least one groove extends from an ink feed slot region of the inkjet printhead to a bubble collection area adjacent to an end firing chamber located beyond the ink feed slot region to facilitate guiding bubbles away from critical areas.

Abstract: The present invention relates to a novel printing apparatus and methods for using the same. The present invention further relates to a method of curing photocurable inks, as used in ink jet printers and other printing apparatus, by exposing the photocurable ink to a radiation source, particularly a flat excimer lamp.

Abstract: The eyewear article has a rimless clip-on which converts regular optical eyeglasses into sunglasses. The clip-on is held by magnets which are disposed in a bridge between its shade lenses. The magnets are very small, round magnet cylinders which are pressed into bores (throughholes or blind bores) in the bridge. The optical eyeglasses have the counter magnets aligned with the magnets in the clip-on. The bores are inclined so as to further increase the holding force of the assembly. In addition, there may be provided a nose on the clip-on bridge which engages into a recess in the bridge assembly of the eyeglasses.

Abstract: A method for making a plastic lens and a plastic lens made thereby. The method comprises disposing a liquid poly(meth)acrylyl monomer, or a monomer mixture, an aromatic bis(allyl carbonate)-functional monomer and a photosensitive initiator into a mold cavity and directing ultraviolet light to act on the lens forming material in the cavity to produce a lens therefrom.

Abstract: An ophthalmic instrument (for obtaining high resolution, wide field of area multi-spectral retinal images) including a fundus retinal imager, (which includes optics for illuminating and imaging the retina of the eye); apparatus for generating a reference beam coupled to the fundus optics to form a reference area on the retina; a wavefront sensor optically coupled to the fundus optics for measuring the wavefront produced by optical aberrations within the eye and the imager optics; wavefront compensation optics coupled to the fundus optics for correcting large, low order aberrations in the wavefront; a high resolution detector optically coupled to the imager optics and the wavefront compensation optics; and a computer (which is connected to the wavefront sensor, the wavefront compensation optics, and the high resolution camera) including an algorithm for correcting, small, high order aberrations on the wavefront and residual low order aberrations.

Abstract: A projection-type display device for displaying an image using a projector device emitting optical images spatially modulated by reflection-type liquid crystal panels onto a screen, wherein phase difference plates are arranged at the incidence planes of the reflection-type liquid panels so as to cancel out the retardation comprised of the retardation corresponding to one-quarter of the wavelength of the incident light due to the polarization beam splitter plus the retardations due to the dichroic mirrors of the color separating and synthesizing means, whereby it is possible to make the illumination light leaking from the polarization beam splitter to the projection lens at the black level portions extremely small and possible to prevent a reduction in the contrast due to the haze phenomenon.

Abstract: An irradiance redistribution guide (IRG) for providing from a radiation source having a nonuniform irradiation distribution, a predetermined irradiance distribution over a predetermined target area spaced away from the IRG. The IRG includes a tubular reflective inner surface disposed between an entrance aperture and an exit aperture. The reflective inner surface has a varying cross-sectional radius. The profile of the cross-sectional radius is defined by a spline function that is uniquely determined by a plurality of knots. The IRG, when used in conjunction with a high-power solar concentrator, is advantageous in materials processing that requires high irradiance level that is uniformly distributed over an area spaced away from the exit aperture by a working distance.

Abstract: Disclosed is a portable electric light comprising a housing, a source of electrical power, and having as a light source an LED with a high internal resistance.

Abstract: An LED luminaire is formed such that a plurality of LED chips are disposed three-dimensionally on an MID (molded interconnection device) substrate in a rectangular plate shape, by mounting three LED chips on bottom face of respective dents provided lengthwise and crosswise in one surface of the MID substrate, the LED chips including at least two types mutually diffferent in luminous color, desirably three types of red, blue and green colors. Any optional light distribution characteristic is made thereby easily obtainable depending on a configuration of the substrate, luminaire module can be thinned, and such delicate color difference as white color and day-light color of luminescent lamps is enabled by mixing the luminous colors of the respective LED chips.

Abstract: A liquid crystal display is formed by a liquid crystal display panel for modulating light to form an image, and a back light unit including a lamp tube which is discharged by an electrode and is disposed behind said liquid crystal display panel, wherein said electrode is formed outside of said lamp tube. In this way, the liquid crystal display unit has a life span which can be increased without the need to replace the lamp tube or the back light unit.

Abstract: A sliding headliner for closing the region below a transparent roof element, in particular a glass sliding roof, in a roofliner is provided.

Abstract: A lighted vehicular mirror assembly includes a mirror case, a reflective element, a support for mounting the assembly on a vehicle, and two lamp assemblies, each having a light source, a reflector member, and a lens. Each reflector member is shaped to direct light emitted by the light source to form a pattern of light directed generally downwardly and rearwardly when the light source is electrically activated. The reflector and lens in each lamp assembly work with one another to collect and direct light to different areas of the vehicle, preferably the lap areas of the driver and front seat passenger of the vehicle. Each reflector member preferably minimizes at least one of light bending, shaping and diffusing of light by its respective lens.

Abstract: The invention relates to a motor vehicle lamp having a light source (4), at least one optical conductor (6) which is optically coupled to the light source (4), and operating means (5) for the light source (4). The optical conductor (6) has a light exit surface (8) whose curvature is adapted according to the invention to the curvature of the motor vehicle.

Abstract: A lamp system for a vehicle having an impact-absorbing bumper that is designed to be mounted substantially flush with the surrounding vehicle body panels and bumper, and capable of deflecting with the stroke of the impact-absorbing bumper during impact to obviate the need for the lamp to pivot about an anchor point or to be mechanically displaceable with additional hardware. The lamp system is preferably formed from resilient, impact-resistant material, with a deformable resilient deflection member selectively located between the lens and the housing, between the inner lens and the outer lens in a dual lens system, or between the housing and the body of the vehicle or a member attached thereto. Further, the resilient deflection member may be the lens itself. The material for the resilient deflection member must have a yield strength that is adequate to sustain a predetermined degree of deformation, corresponding to the amount of deflection required to deflect with the bumper stroke.

Abstract: A spiral conveyor for a concrete extrusion machine has a first spiral conveyor section with a first external diameter. There is a second spiral conveyor section having a second external diameter which is greater than the first diameter. The second section is spaced apart from the second section. A third spiral conveyor section is between the first section and the second section. The first end of the third section is connected to the first section and the second end is adjacent to the second section. The second spiral conveyor section may be mounted on a hollow shaft of the third section. The second section has two longitudinally divided components, each having a recess therein. Connectors interconnect the two components and a locking device is between the hollow shaft and the second section.

Abstract: The invention apparatus comprises a mixing vessel closure having rotating mixing blades secured thereto. The mixing blades are driven through an axially engaged and disengaged direct coupling. The closure is mounted on a power base structure for rotation about an axis that is substantially transverse of the mixing blade axis. Additionally, the closure mounting includes a translational drive for linearly raising and lowering the closure at each of two positions about the transverse axis. A portable mixing vessel including a material charge is placed under the vessel closure. The closure is translated down to a sealed cover position over a vessel opening and secured to the vessel. The unitized assembly of the closure and vessel is translated away from a vessel supporting transport base and rotated to a inverted position. The unitized assembly is then translated down to engage a rotatory power transmission coupling.

Abstract: A stirring device achieving high stirring efficiency and easy to wash and maintain, is provided. The stirring device includes a vertical cylindrical stirring vessel, a rotary shaft vertically extended within the stirring vessel for rotation, and a stirring vessel constituted of two or more basically rectangular vane plates vertically supported on the rotary shaft in symmetrical relation with each other with respect to the rotary shaft. On an upper portion of the stirring vane, a recess is formed for forming a cone about the rotary shaft when the stirring vane rotates. A lower end of the stirring vane is arranged in the vicinity of a bottom surface of the stirring vessel.

Abstract: Continuous, chaotic convection mixer, convection heat exchanger and convection reactor The invention relates to a device (1), in particular for mixing, for heat exchange or for carrying out reactions, having one or more through-flow elements (2) which have a center line (3) in the direction of flow, wherein the element(s) (2) is/are at least partially shaped or arranged such that the curve (9) formed by the center line(s) (3) approximately satisfies the following parametric representation: ϑ ⁡ ( t ) = ( ( - 1 ) [ t ] ⁢ a ⁡ ( t

Abstract: An order-changing microfluid mixer comprises an extended microfluidic channel and a chamber structure that provides order-changing functions to microfluid when the microfluid passes through the chanter structure. The order-changing chamber has two openings connected to said microfluidic channel and divides said microfluidic channel into two sections. When a microfluid is driven from one section of the microfluidic channel to the other, the microfluid enters into the order-changing chamber and flows along a first side of the order-changing chamber, whereby portions of the microfluid positioned adjacent to the second side of the order-changing chamber remain unmoved.

Abstract: A thermal analyzer scans temperature by thermally altering a sample and measuring a thermal change based on physical and chemical changes of the sample as a function of time and/or temperature. The thermal analyzer includes a heat-generating section for heating a sample. The heat-generating section includes a first semiconductor substrate of a first conductivity type forming a thin-film heater with a cavity section in a lower section thereof and a second semiconductor substrate of a second conductivity type connected to the first substrate. The cavity section forms a sample holding section for holding the sample. The thermal analyzer further includes a temperature detecting section for detecting a temperature of the sample holding section. The sample holding section and the temperature detecting section are monolithically formed on the thin-film heater or an area proximate the thin-film heater in a thin-film supporting section for supporting the thin-film heater.

Abstract: A device and method are provided for measuring the thermal conductivity of rigid or flexible, homogeneous or heterogeneous, thin films between 50 &mgr;m and 150 &mgr;m thick with relative standard deviations of less than five percent. The specimen is sandwiched between like material, highly conductive upper and lower slabs. Each slab is instrumented with six thermocouples embedded within the slab and flush with their corresponding surfaces. A heat source heats the lower slab and a heat sink cools the upper slab. The heat sink also provides sufficient contact pressure onto the specimen. Testing is performed within a vacuum environment (bell-jar) between 10−3 to 10−6 Torr. An anti-radiant shield on the interior surface of the bell-jar is used to avoid radiation heat losses. Insulation is placed adjacent to the heat source and adjacent to the heat sink to prevent conduction losses. A temperature controlled water circulator circulates water from a constant temperature bath through the heat sink.

Abstract: A solder paste product includes solder paste in a container with a time-temperature indicator positioned to measure the solder paste's cumulative exposure to heat.

Abstract: A bulk bag for dense materials includes side panels seamed together to form side walls having first and second ends and at least one end wall secured to the first ends of the side walls with the seams connecting the side panels to form the side walls located at points substantially spaced from the adjacent corners of the end wall. Four baffles extend across the corners of the end wall and are secured to the side panels. One or more additional baffles are secured in the side wall seams and extend entirely across the interior of the bulk bag to maintain the bulk bag in a rectangular cross-sectional configuration when filled with dense materials.

Abstract: A bearing system has a bearing axis initially coincident with a shaft axis and an outer member axis. An inner bearing element is associated with and coupled to the shaft. An outer bearing element is associated with and coupled to the outer member. A first of the inner and outer bearing elements is coupled to its associated member via a coupling having a trunnion stiffness which, upon experiencing a trunnion moment above a threshold moment, releases from an initial stiffness to a reduced stiffness, less than the initial stiffness, entering a released condition and allowing the shaft axis to locally rotate out of parallel with the outer member axis.

Abstract: A system is provided for mounting a connector assembly to a substrate. The substrate includes at least one pre-placement hole and at least one positioning hole. A connector housing has a pre-placement peg sized for insertion into the pre-placement hole in the substrate with substantially zero insertion forces to generally place the housing on the substrate. The housing has a positioning peg sized for insertion into the positioning hole in the substrate by a press-fit to precisely fix the housing on the substrate.

Abstract: A colored adhesive useful for an optical fiber connection or termination, containing an adhesive component having a viscosity between about 200 centipoise and about 5000 centipoise, a colorant which is soluble in the adhesive component having a first color before exposure to radiation having a wavelength of from about 400 to about 1100 nanometers, and a second color after exposure to radiation, and an initiator system to cure the adhesive composition by exposure to the radiation.

Abstract: An optical transmission component and a method of making the same in which one or a plurality of optical fibers 1 are fixed to a main body 3 of the optical transmission component with one end face of each optical fiber being exposed, and thus exposed end face is used as a connecting end face to be optically connected to another optical transmission component. The coating 1b of each optical fiber 1 is removed, so as to expose a predetermined length of an optical fiber 1a. An end face 1c of thus exposed optical fiber is processed by spark discharge processing in a short period of time, such that at least the front end of a core portion projects from the front end of its cladding portion. Thus processed optical fiber 1 is inserted into the main body and fixed thereto with an adhesive 5, while a predetermined pressure is being added along the optical axis of each optical fiber 1 from the end face 1c side.

Abstract: The camera of this invention preferably includes a combined film advance/rewind mechanism for advancing film from a film cassette to a film path and to a film spool and for rewinding film into the cassette after the film has been exposed within the film path. The combined film advance mechanism preferably thrusts film from the film cassette in order to begin the loading process and then pulls the film to wind it around the film spool after the film has been thrusted to the film spool. Preferably, the combined film advance/rewind mechanism is manually operated and can be operated either to advance film or rewind film. Further the combined film advance/rewind mechanism preferably has an interlock that prevents thrusting of the film when the combined film advance/rewind mechanism is in a rewind position and rewinding film the combined film advance/rewind mechanism is in an advance position.

Abstract: Key covers for individual keys of a computer keyboard. Each key cover has a colored background and a fluorescent letter corresponding to the letter key to which it is affixed. Each cover is the same size as the key it covers but the letter on each key is larger than the corresponding letter on the computer key. Each key cover is removably attached to the key by adhesive means.

Abstract: A container for feeding a stick type cosmetic material which can reduce the number of parts employed therein and can easily be assembled is provided. The container for feeding a stick type cosmetic material 1 comprises a chuck 41 for retaining a stick type cosmetic material 3, a front cylinder 11, a push rod 47 having external-thread-shaped projections 49 on its outside surface, and a body cylinder 15 which has internal threads 63 to be spirally engaged with the external-thread-shaped projections 49. Unevennesses 49a having the same sections are formed on a peripheral surface of the external-thread-shaped projections 49 of the push rod 47 in an axial direction. On an inside surface of the front cylinder, synchronous engagement grooves 31 which are engaged with the unevennesses 49a and synchronously engage the push rod 47 and the front cylinder 11 are formed.

Abstract: A container-applicator system for cosmetic or like materials such as creams, powders, liquids and gels. The applicator of the system has an elongated tip for metered application of the material, located at the distal end of a stem which is carried by a cap so as to be inserted into and withdrawn from the mouth of a container of a cosmetic product to be applied. The tip is a molded elastomer element having a distal end formed with a shallow cup, which may be oriented at an oblique angle to the stem. A flexible wiper, mounted in the container mouth, removes excess material from the cup as the applicator is withdrawn from the container.

Abstract: The brush (1) includes a core (2) formed from a metal wire bent into a U and the branches of which are twisted to trap radial bristles (3) between them, the core (2) being fixed to the end of a wand (6). The branches of the core are twisted, turning to the left, to form turns which turn in the clockwise direction about the axis (X) of the core when progressing from the wand towards the end of the brush, whereas the bristles (3) of the brush form helical layers (S) rising from left to right in the area located between the core and an observer who holds the brush substantially vertical in front of him/her with its tip pointing upwards.

Abstract: A combined pen and tool arrangement includes a lower penholder holding an ink cartridge for writing, an upper penholder fastened to the lower penholder, and a tool holder mounted inside the upper penholder and holding a pair of scissors and a cutter. The scissors and the cutter are respectively turned in and out of the tool holder and the upper penholder through a longitudinal slot in the tool holder and a longitudinal slot in the upper penholder.

Abstract: A toothbrush with multiple pumping systems including a head portion having three rows of a plurality of outlet ports formed therein. The head portion has a plurality of bristles secured thereto. An elongated handle portion removably couples with the head portion. The handle portion has a hollow interior in communication with the hollow interior of the head portion. Three manual pumps are slidably disposed within the handle portion. Three tubes are removably disposed within the head portion and the handle portion disposed between the outlet ports of the head portion and the three pumps. The three tubes hold quantities of liquid toothpaste, mouthwash, and antibacterial rinse.

Abstract: A mounting device adapted to be coupled to a portion of a bicycle to adjustably support at least one bicycle component thereon. The bicycle mounting device has a bar clamp and a support member. The bar clamp has a bar clamping portion adapted to be coupled to the portion of the bicycle and a support portion spaced from the bar clamping portion. One of the bar clamping portion and the support portion has a ball joint with a mounting bore formed therein. The support member is slidably coupled to the support portion and adapted to support at least one bicycle component thereon. In the illustrated embodiment, the ball joint is formed in the support portion for adjusting the orientation of the support member relative to the portion of the bicycle. In the illustrated embodiment, gear indicators are supported on the support portion. Of course, the mounting device can be used to support a cycle computer, a speed indicator and the like.

Abstract: Device for establishing a gastight and fluidtight connection in a horizontal level between two or more containers (100, 200) of the iso-container type. The device includes a substantially band shaped, elastic sealing member (300) which surrounds an opening (20) between the containers to be connected and which is arranged on a supporting surface (105). A pressure exerting member (130) is provided to hold the sealing member (300) tightly against the supporting surface (105) with tightening members (400) to force the sealing member (300) against the supporting surface (105). The sealing member (300) in mounted position is arranged with a generally rectangular cross section and is placed against a supporting surface (105) on the respective containers, generally extending in the main level of the respective containers. The pressure exerting member constitutes at least four generally band shaped members (130) arranged at the respective flat supporting surfaces (105) of a container (100).

Abstract: An axle is made-up of a left and a right axle halves which axially engage to form a completed axle assemble for supporting a roller skate wheel or other rotating member. A control rod is positioned and enabled for axial translation within the axle and may be moved by physical contact with the rod through an access hole at one end of the axle. A spring normally positions the control rod so that a set of ball bearings mounted within radial holes in the axle are forced into outward positions for engaging the axle halves to form a unitary unit. When the control rod is translated against spring tension, however, the bearings are able to move radially inwardly so as to disengage the axle halves for quick disassembly for replacing a wheel or other need. The axle provides a spring bias enabled for forcefully separating the axle halves once released. A threaded cap is adjustable in its position to moderate the separating force.

Abstract: A corner joint for profile sections (13) provided with one or more longitudinal channels (16), in connection with the outside of the profile section via a likewise longitudinal slot opening (12). The channel (16) constitutes an attachment for a nut means (11) which cooperates via screw means (14) with connector fittings (17, 24). Each screw means (14) is provided with a lock means (10) which is located in the slot opening (12) between the nut means (11) and the connector fittings (17, 24). The lock means (10) is provided with a screw opening (15) and means (20) for locking the nut means (11) against rotation out of a locking position. The lock means (10) is also provided with at least one boss (23) which during rotation of the nut means (11) from its locking position cooperates with a shoulder (22) on said nut means, in order to position the nut means and facilitate its removal from the channel (16).