Abstract: The tank opening-closing device is realized with a simple constitution of the opening-closing mechanism equipped with a pressure adjustment valve for regulating the internal pressure of the fuel tank. The opening-closing mechanism is equipped with a gasket provided on the opening peripheral edge part of the inlet of the tank opening forming member, the valve opening-closing mechanism for opening and closing the inlet and also regulating the internal pressure of the fuel tank, and a retraction mechanism that selectively moves the valve opening-closing mechanism to the closing position and the fueling position in conjunction with the fueling gun, The valve opening-closing mechanism has a closing position for opening and closing the inlet and a fueling position retracted from the inlet for which it is possible to supply fuel.

Abstract: A low cost air damper that provides a good seal with low torque requirements. Blade seals of square cross sectional configuration are provided on each damper blade so that the blade seals engage adjacent blades before the blades are fully closed. L-shaped side seals and multiple discs that receive the ends of the blades serve collectively to seal between sides of the damper frame and the blades when the blades are closed even when the blades are not cut precisely. One edge of the L-shaped side seals engages and seals against the discs and the other edge of the side seals laps over and seals against a flat side of the blades and against the square blade seals. A low friction coating is applied to the side seals to further reduce friction.

Abstract: A heat exchanger may include a heat radiating portion provided with first, second, and third connecting lines formed in a predetermined sequence by stacking a plurality of plates, and receiving first, second, and third operating fluids respectively into the first, second, and third connecting lines, the first, second, and third operating fluids exchanging heat with each other while passing through the first, second, and third connecting lines and the first, second, and not being mixed with each other while being circulated, and a bifurcating portion connecting an inflow hole for flowing one operating fluid of the first, second, and third operating fluids with an exhaust hole for exhausting the one operating fluid, adapted for the one operating fluid to bypass the heat radiating portion according to a temperature of the one operating fluid, and mounted at an exterior of the heat radiating portion.

Abstract: A constant pressure valve includes a lock rod, a valve sleeve, a sliding shaft, a biasing unit, and a solenoid unit. The lock rod is formed with a first through hole. The valve sleeve is inserted fixedly into the lock rod, and includes an outer sleeve surface having a shrunk surface portion cooperating with the lock rod to define an annular space in fluid communication with the first through hole. The sliding shaft is movable in the valve sleeve to contact the lock rod, and includes a large-diameter section and a small-diameter section. The constant pressure valve is adapted to maintain a hydraulic device at a preset pressure. The less a difference between the diameters of the large-diameter section and the small-diameter section is, the more the preset pressure can be.

Abstract: A handle assembly for a valve system is provided. The handle assembly includes a first gear coupled to an input shaft, a handle coupled to the input shaft, a second gear coupled to an output shaft and positioned to engage the first gear, and a saddle interconnecting the input shaft and the output shaft.

Abstract: A combination of a faucet handle and a control valve has a faucet, an ornament panel, a positioning plate, a sleeve and a handle; wherein: the faucet is insertable into an existing installation hole in a wall, a connecting section of the faucet is disposed through the installation hole, the connecting section having an outer thread formed on a peripheral surface thereof and a control rod protruding from a center position, the control rod connected to a control member of the faucet.

Abstract: A heated rotary valve for use in connection with a sample to be separated in a column for heating the sample to temperature within the valve. The heated rotary valve permits introduction of compounds, having a wide boiling range, into a gas chromatograph with improved precision of area and retention time. The valve includes a stator, an elongate body, a rotor seal, a drive shaft, and an internal element for generating heat. The rotor seal may be laterally captured by a ring to prevent movement or creep due to heat absorption during operation.

Abstract: An abrasion-resistant braided hose (1) having an abrasion-resistant layer (4) located between an inner hose (2) and a braiding covering (3). The abrasion-resistant layer is preferably a strip of Teflon® helically or spirally wrapped around the inner hose to allow for flexibility. The abrasion-resistant layer reduces the amount of friction between the inner hose and the braided covering, thereby reducing the likelihood of the inner hose rupturing and failing.

Abstract: An ultra low permeability fluid member for conveying a fluid (e.g., a hose, tube, etc.) having a metal vapor barrier layer (22) formed around an inner tube (14). The metal vapor layer (22) is formed from one or more metal strips (40a, 40b) having edge portions (44) that are bonded so as to seal the vapor barrier layer (22) preventing permeation of vapor.

Abstract: A fitting for thick-walled pipes, having a contact region and a pressing region, the pressing region being arranged on the side of the contact region facing towards the pipe insertion opening, and the wall thickness in the pressing region being at least in sections less than the wall thickness in the contact region. The invention also relates to a method for producing a fitting for thick-walled pipes, in which a thick-walled pipe is radially widened in a fitting region arranged at one pipe end so that the internal diameter of the fitting region corresponds substantially to the external diameter of the pipe and the wall thickness in the fitting region corresponds substantially to the wall thickness of the rest of the pipe.

Abstract: A threaded joint has a sealing ring radially positioned between a pin and a box and axially positioned on a portion of the pin on an opposite side of the threads of the pin from the nose of the pin. The sealing ring has two protruding annular lips positioned at a skewed angle to the longitudinal axis, two or more radial annular ribs on an external surface, an internal surface, and an at least partly embedded reinforcement ring. When the joint is made up, the sealing ring is in sealing contact with an annular groove of the box by the annular ribs and in sealing contact with the pin by the internal surface. The internal surface of the sealing ring can have a uniform diameter or have radially protruding annular ribs.

Abstract: Assemblies that can be disposed in a subterranean bore and that can facilitate branch wellbore creation are described. An assembly can include threadedly coupled components having inner and outer sealing members in grooves. The sealing member can cooperate with the components to provide a pressure seal. The assembly can also include a venting member for equalizing pressure in a chamber defined by the coupled components. One of the components can be made from aluminum. At least part of that component can be coated with a coating material that is nonconductive.

Abstract: An assembly for coupling a pair of double-walled tubes is provided. The assembly includes a pair of flanges disposed in an opposing relation to each other and mutually coupled thereto. Each flange defines a central opening that is configured to correspond with a similar opening on an opposing flange. The central openings of the coupled flanges are configured to communicate a first fluid. The assembly further includes an annular hub portion extending axially away from each of the flanges. The annular hub portion is disposed about the central opening of the respective flange. The assembly further includes a lip portion depending frustoconically from the hub portion. The flange, the hub portion, and the lip portion define a conduit extending therethrough. The conduits are configured to allow passage of a second fluid therethrough.

Abstract: The present application is directed to dielectric isolators for use in aircraft fuel systems to control lightning induced current and allow dissipation of electrostatic charge. The dielectric isolators are configured to have a high enough impedance to limit lightning currents to low levels, but low enough impedance to allow electrostatic charge to dissipate without allowing buildup. Although the dielectric isolators may develop a potential difference across the dielectric length due to the effects of lightning currents and its inherent impedance, they are configured to withstand these induced voltages without dielectric breakdown or performance degradation. In one embodiment, the dielectric isolator includes a tube constructed of a composition including a thermoplastic organic polymer (e.g., PEEK) and carbon nanotubes, and a pair of couplings attached to opposing ends of the tube.

Abstract: The invention relates to a male connector for a liquid circuit, comprising: a distal connection piece comprising a tubular part that defines a passage; a proximal connection piece; a joining member extending in a fixed and co-axial manner in the tubular part of the distal connection piece, the joining member being formed by a tubular body on which is fixed, at a free end, a cylindrical valve which is elastically deformable and closed at a distal end by a valve thickness traversed by a slit; and a sliding ring mounted on the tubular body, the sliding ring being movable between an inactive position, in which it encapsulates the walls of the valve, leaving the distal end of the valve free, and a connection position, in which it is situated at a distance from the distal end of the valve and exposes all or part of the lateral walls of the valve.

Abstract: A leakage-free pipe fitting of quick connection for Reverse Osmosis Membrane (RO) water treatment unit of household has a pipe fitting, a sealing O-ring, an annular cooperative bushing collar, a cylindrical elastic sleeving collet, an accessory latching clip with a cantilevered lug, and an annular reinforcing bolster with an inner bore. The annular reinforcing bolster is inserted into the cylindrical retainer of the pipe fitting sandwiched between the sealing O-ring and the bottom surface of the cylindrical elastic sleeving collet.

Abstract: A light detection and ranging device associated with an autonomous vehicle scans through a scanning zone while emitting light pulses and receives reflected signals corresponding to the light pulses. The reflected signals indicate a three-dimensional point map of the distribution of reflective points in the scanning zone. A hyperspectral sensor images a region of the scanning zone corresponding to a reflective feature indicated by the three-dimensional point map. The output from the hyperspectral sensor includes spectral information characterizing a spectral distribution of radiation received from the reflective feature. The spectral characteristics of the reflective feature allow for distinguishing solid objects from non-solid reflective features, and a map of solid objects is provided to inform real time navigation decisions.

Abstract: A cap for covering an end of a tube is disclosed. The cap includes a body, a reinforcement structure, a positioning flange and ribs. The body is of a cup shape. The reinforcement structure is formed on a bottom of the body. The positioning flange is outward formed on a top of the body and has at least one notch. The ribs are outward formed on a peripheral wall of the body. Lower ends of the ribs are formed with tapered slants.

Abstract: A pipe attachment for sealing a leak, the attachment comprising a frame formed by a pair of opposed jaws which when closed define a substantially cylindrical cavity, and a stretchable waterproof membrane secured to the frame; wherein each jaw has a distal end and the frame comprises an intermediate portion located between said opposed distal ends, said jaws having a closed configuration in which said distal ends of the jaws are adjacent to each other, and an open configuration in which said distal ends of the jaws are spaced apart from each other; the frame including a securing means for resisting the opening of the jaws in said closed configuration; and wherein the stretchable waterproof membrane includes opposed end portions, each of said membrane end portions being secured to the distal end portion of a respective jaw and said stretchable waterproof membrane being secured to the frame only via said end portions; the stretchable waterproof membrane having an unstretched configuration when the cavity is empt

Abstract: A pop-up monitor is provided. A pop-up monitor with a double rack gear includes a driving unit, a rack gear set, and a monitor frame. The driving unit includes a spur gear set having first and second spur gears, and generates first and second rotational motions with the first and second spur gears. The rack gear set includes an outer gear with a rail groove in one surface thereof along, changing the first rotational motion to a first rectilinear motion, and an inner gear with a rail rail-coupled to the rail groove changing the second rotational motion to a second rectilinear motion. The monitor frame includes a support frame supporting a monitor. The monitor frame is fixed by the inner gear which vertically ascends by the second rectilinear motion without forward and rearward movement when the support frame has vertically ascended to a position according to the first rectilinear motion.

Abstract: The invention is directed multipurpose support device for supporting an item such as a laptop computer or a book. The support device has a base that is adapted to be coupled to a structural support, such as a mobile cart, a desk, a sofa or a wall.

Abstract: A wall hanging mechanism is set on a shell of an electronic product for hanging it on the wall. The wall hanging mechanism includes a top cover, a bottom cover and a hanging plate. The edge of the top cover is provided with an opening. The bottom cover is mounted on the top cover to form a receiving space. The hanging plate is placed in the receiving space, and includes an area for adhesion, an area for mounting screw and an area for mounting sucker. The opening exposes at least one of the areas. The wall hanging mechanism can provide a variety of hanging options, and user can choose hanging plates configured in different positions according to the weight of the electronic product. The wall hanging mechanism may satisfy different requirement of user.

Abstract: A shaft coupling guard is used to cover a shaft coupling that couples a main shaft of a prime mover and a main shaft of a driven apparatus as a rotatable apparatus driven by the prime mover. The shaft coupling guard includes a guard main body formed so as to extend in a direction along an axis and having a tubular shape for circumferentially covering the shaft coupling. The guard main body includes a guard main body upper portion, and a guard main body lower portion configured to be detachable from the guard main body upper portion. The shaft coupling guard further includes a leg portion formed integrally with the guard main body and configured to support the guard main body.

Abstract: Gas containment vessels are provided that are comprised of an inner corrosion resistant shell made of lower strength steel alloy or aluminum alloy or thermoplastic polymer, and an outer concentric shell constructed of high strength, albeit lower corrosion resistant, metal or fiber-reinforced composite. The fiber can comprise filaments derived from basaltic rocks, the filaments having been immersed in a thermosetting or thermoplastic polymer matrix, and comingled with carbon, glass or aramid fibers such that there is load sharing between the basaltic fibers and carbon, glass or aramid fibers.

Abstract: A non-cylindrical pressure vessel storage tank is disclosed. The storage tank includes an internal structure. The internal structure is coupled to at least one wall of the storage tank. The internal structure shapes and internally supports the storage tank. The pressure vessel storage tank has a conformability of about 0.8 to about 1.0. The internal structure can be, but is not limited to, a Schwarz-P structure, an egg-crate shaped structure, or carbon fiber ligament structure.

Abstract: A system for the cold-weather storage of gaseous fuels includes a gas source having an inlet pressure, a compressor having an inlet and an outlet, the inlet selectively communicating with the gas source and the outlet having a discharge pressure greater than the inlet pressure, a heat exchange apparatus having an inlet and an outlet, the inlet selectively communicating with the compressor so as to receive pressurized gas therefrom, a high-pressure storage tank having an inlet and an outlet, the inlet selectively communicating with the compressor so as to receive pressurized gas therefrom, and a valve assembly for selectively directing the pressurized gas to the heat exchange apparatus and the high-pressure storage tank in dependence upon a temperature within the storage tank.

Abstract: A polyvinylidene fluoride (PVDF) pyrolyzate adsorbent is described, having utility for storing gases in an adsorbed state, and from which adsorbed gas may be desorbed to supply same for use. The PVDF pyrolyzate adsorbent can be of monolithic unitary form, or in a bead, powder, film, particulate or other finely divided form. The adsorbent is particularly suited for storage and supply of fluorine-containing gases, such as fluorine gas, nitrogen trifluoride, carbo-fluoride gases, and the like. The adsorbent may be utilized in a gas storage and dispensing system, in which the adsorbent is contained in a supply vessel, from which sorbate gas can be selectively dispensed.

Abstract: A liquid cargo storage tank and a ship including the same are provided. The liquid cargo storage tank according to the present invention comprises: a body installed in a hull of a ship and having a liquid cargo receiving space by forming a space between the body and the hull; and a reinforcing plate installed in the lower part of the body in a state of being spaced apart from the underside of the body to be a floor of the liquid cargo receiving space.

Abstract: The invention relates to a method for supplying at least one analysis apparatus with at least one liquid. In the method, the liquid is kept available in a storage tank, from where it is transported into at least one buffer tank. The liquid is fed to the analysis apparatus from the buffer tank, whose filling level is monitored. Here, the buffer tank is arranged above the analysis apparatus and the storage tank is arranged below the analysis apparatus. The invention also relates to a device for carrying out this method as well as to an analysis apparatus in which this device is employed.

Abstract: A method for drag reducing low molecular weight liquids is provided. More specifically, a method to separate drag reducers from low molecular weight liquids, such as hydrocarbons and anhydrous ammonia, is provided.

Abstract: An LED lamp A includes a plurality of LED modules 2 each including an LED chip 21, and a support member 1 including a support surface 1a on which the LED modules 2 are mounted. The LED modules 2 include a plurality of kinds of LED modules, or a first through a third LED modules 2A, 2B and 2C different from each other in directivity characteristics that represent light intensity distribution with respect to light emission directions. This arrangement ensures that the entire surrounding area can be illuminated with sufficient brightness.

Abstract: The present invention provides a method for manufacturing an LED light bar and an LED light bar thereof. The method includes (1) providing a metal substrate (20) and a plurality of LED lights (40); (2) forming a graphene layer (60) on the metal substrate (20) in such a way that the graphene layer (60) includes hollow sections (62) formed to correspond to the LED lights (40); (3) mounting the LED lights (40) to the metal substrate (20) in the hollow sections (62); and (4) forming silicone layers (80) in the hollow sections (62). The method for manufacturing the LED light bar and the LED light bar thereof according to the present invention use a graphene layer formed on a metal substrate and use silicone layers for planarization and heat transfer so as to effectively enhance heat dissipation performance of the LED light bar and extend lifespan of the LED light bar.

Abstract: The invention relates to a lighting device and a method of manufacturing such a lighting device. The lighting device (1) comprises a first light emitting element (101) being optically coupled to a light guide (110) having an out-coupling surface (111) for illumination via the light guide. Further, the lighting device comprises a second light emitting element (102) dedicated for direct illumination from the lighting device. The invention is advantageous in that the lighting device provides both a decorative look and a functional illumination, and is still energy-efficient since the light emitted from the second light emitting element is directly emitted from the light emitting element without unnecessary energy-loss.

Abstract: The disclosed embodiments relate to a light guide (100) and a luminaire (700) including such a light guide (100). The light guide (100) guides light emitted in a first direction (500) from a light source (200) comprising at least one light emitting diode (210). The light guide (100) directs a major part of the light in a second direction (600), wherein the first direction (500) is not equal to the second direction (600). The light guide (100) comprises an upper part (110) having a shape of a cone, and a center axis (120) of the upper part (110) is in the first direction (500). The light guide (100) can be used with reflectors (800) that have originally been manufactured for use with high intensity discharge lamps or halogen lamps but because of the light guide (100), the reflectors (800) can be used together with light sources (200) in the form of at least one light emitting diode (210).

Abstract: A light emitting apparatus includes a light emitting device, fixedly situated at a first position, to emit light at a wavelength, a first phosphor, fixedly situated at a second position, to radiate light with a first spectral characteristic out of the light emitting apparatus in response to irradiation by the light at the wavelength, and a second phosphor, fixedly situated at a third position, to radiate light with a second spectral characteristic out of the light emitting apparatus in response to irradiation by the light at the wavelength. An optical coupling mechanism is included to optically couple the light emitting device to the first phosphor and to optically decouple the light emitting device from the second phosphor in a first operating mode, and optically couple the light emitting device to the second phosphor in a second operating mode.

Abstract: A lamp having an enclosure with a reflector and a lens where the reflector is made of thermally conductive material. A base is coupled to the enclosure. An LED is located in the enclosure and emits light when energized through an electrical path from the base. A heat sink having a heat dissipating portion that may be at least partially exposed to the ambient environment and heat conducting portion that is thermally coupled to the LED. The reflector is thermally coupled to the heat sink and is exposed to the exterior of the lamp such that heat from the heat sink may be dissipated to the ambient environment at least partially through the reflector.

Abstract: An improved compact searchlight utilizing the merging of multiple single beams to a concentrated light. This provides or light beam that is nearly constant illumination intensity across the beam of light. This reduces or eliminates bight and dim areas that are created from previous light systems that use desecrate lighting elements. The lighting elements includes an a power supply a light source and a lens projection system, wherein the lens projection system including a collecting lens, a negative lens, and a collimating lens such that the illuminance of an area illuminated by a beam and searchlight is projected by the improved light is homogeneous throughout the whole of the illuminated area.

Abstract: A downlight reflector assembly for a light-emitting diode (LED) light source includes a kicker reflector and an upper scoop. The kicker reflector has a reflector wall extending between a small top opening and a large bottom opening along a transverse axis. The reflector wall has an internal surface with an illuminated area and a non-illuminated area. The upper scoop is mounted in the small top opening of the kicker reflector and has a reflective multi-faceted surface with a concave curvature relative to the LED light source. The upper scoop extends from the top opening in part along the transverse axis and covering a portion of the top opening. The multi-faceted surface faces both of the illuminated area of the kicker reflector and the top opening for reflecting light rays received through the top opening towards the illuminated area.

Abstract: An optical lens including a first light exit surface, a total internal reflection (TIR) surface, a second light exit surface and a third light exit surface connected in an order, and correspondingly has a first intersection, a second intersection and a third intersection therebetween. A first line between the first intersection and a reference point on an optical axis of the optical lens intersects with the optical axis to form a first angle between 30 degrees to 60 degrees, and a first direction of the reference point pointing toward a point on the TIR surface intersects with a normal of the first light exit surface at the point to form a reflecting angle larger than a critical angle of TIR. A second line between the second intersection and the reference point intersects with the first line to form a second angle between 10 degrees to 30 degrees.

Abstract: A billboard includes a support structure and a display surface mounted on the support structure. A first lighting assembly is mounted on the support structure and includes LEDs directed toward the display surface so that the first lighting assembly can illuminate a first portion of the display surface. A second lighting assembly is also mounted on the support structure and also includes LEDs directed toward the display surface so that the second lighting assembly can illuminate a second portion of the display surface. The first portion and the second portion constitute the entire display surface. The entire display surface can be uniformly illuminated using only the first lighting assembly and the second lighting assembly such that the light intensity across the display surface is provided with a uniformity that achieves a 3:1 ratio of average illumination to minimum illumination.

Abstract: An LED lighting lamp contains a cover, having a port for power leads, ports for cover fixing, an external collar, catches, feeding socket and feeders' connecting cube, fixed inside the cover to its bottom; a housing, having an external collar with rectangular recess, protrusions arranged on the vertical walls inside the housing, bars, catches, a seat in which the PIN ends are fastened to be connected with feeding socket, wherein the catches are connected with cover catches; an electronic board of the feeder, with ports for housing bars, electronic elements and electrical connectors placed on the upper surface as well as connector support placed on the lower surface; insulation molder, fastened in the housing collar's recess and having a central rectangular cavity with rectangular and round ports in its bottom; a radiator in the form of a rectangular molder, fastened in the cavity of insulation molder and having on its upper surface a central rectangular seat, inside which, at least two bars and one port are p

Abstract: An optical element for influencing the light emission of a substantially punctiform light source, in particular an LED. The optical element has a truncated pyramid- or cone-like basic shape with an approximately rectangular base that forms a light-emitting surface, and the optical element also has a cover surface which faces the light source and which forms a light inlet surface. Lateral face regions of the optical element, the regions extending from the cover surface in the direction of the corners of the base, are formed by flat or rotationally symmetrical surface regions.

Abstract: A lighting device includes a body, a light emitting module disposed on the body, an optical member disposed on the light emitting module and configured to be movable up and down, and a reflector disposed between the body and the optical member; a shape of the reflector being changed by moving the optical member, such that the light distribution angle and range of light reflected by the reflector and passing through the optical member are adjusted.

Abstract: A lighting apparatus contains a main housing; a reflector disposed within the main housing, and having a front side and a rear side; a heat conducting body comprising at least two heat pipes, wherein a first portion of the at least two heat pipes are parallel to a central axis of the lighting apparatus on the front side of the reflector, and a second portion of each of the at least two heat pipes is in the rear side of the reflector and is thermally coupled to the main housing; a heat conducting head located on the front side of the reflector, and is thermally coupled to the heat conducting body; at least two light-emitting diodes (“LEDs”) thermally coupled to the heat conducting body, and being positioned to face the front side of the reflector so that light emitted from the LEDs are directed to said front side.

Abstract: A light engine that includes light emitting diodes mounted on a printed circuit board, which in turn is attached to a heat sink. An optic assembly is positioned over the printed circuit board to direct the emitted light as desired. The light engine can be positioned. within the ceiling within the opening of a mounting frame. In some embodiments, the light engine is retained on the mounting frame such that it can be moved clear of the mounting frame opening.

Abstract: An illumination apparatus (10) for the generation of an illumination field (102) for an optoelectronic sensor (100) is provided which has at least one light source (12) and an illumination optics (14), in particular comprising a TIR lens (16) in order to guide the light of the light source (12) into the illumination field (102) in a directed manner, wherein the illumination optics (10) has a light entrance region (20), a light guidance region (22) having a jacket surface (24) and a light exit region (26) such that the light (28, 30) of the light source (12) is guided from the light entrance region (20) to the light exit region (26) in the illumination optics (14) by means of total reflection at the jacket surface (24). In this connection the illumination optics (10) has an adaptable optical beam forming element (18) at the light exit region (26) in order to set the light distribution of the irradiated light (28, 30).

Abstract: A luminaire is disclosed comprising one or more side members having one or more light modules associated therewith and defining a recess. The light module having one or more light sources, one or more light directing members, and a lens enclosing the light sources and directing members in the module. The light directing members redirecting light emitted from at least one of the one or more light sources to be perpendicular to the lens. One or more of the light directing members can be a reflector or an optic lens. The light modules can be configured to cast different light distributions to combine to form the desired light distribution. The light modules can be designed or exchanged to create any desired light distribution from the same side members. The light module can comprise a tray such that the lens is sealed to the tray keeping moisture from entering the module.

Abstract: A lens for distributing light from a light emitter in a desired asymmetric illumination profile includes a lens body having an input side and an output side. The input side receives light from an emitter, and the output side includes a major total internal reflection surface and a refractive surface. A primary emission axis associated with the emitter is defined through the lens body, and a transverse reference plane is positioned parallel to the primary emission axis. A desired illumination region is located on a first side of the reference plane, and a desired dark region is located on a second side of the reference plane. In some embodiments, the total internal reflection surface is entirely positioned on the second side of the reference plane. In additional embodiments, the total internal reflection surface includes a plurality of substantially planar adjacent longitudinal faces.

Abstract: A light fixture mounting post includes an upper threaded portion for attaching the post to a light shade and a lower portion for attaching light fixtures to the post. The upper threaded portion has left handed threads, and an O-ring and a shaped rubber washer residing between a post nut and the shade. A post flange limits the insertion depth of the upper threaded portion through the shade. The threaded segments include right handed pipe threads for tightly engaging the light fixtures. Embodiments include a continuous lower portion with straight or tapered threads and a segmented lower portion with reduced thickness spaces separating the taper or straight threaded segments allowing easy shortening of the lower portion.

Abstract: A LED display module with a quick mounting-Dismounting structure comprising: a mask; a bottom shell; and an LED lamp board; the LED display module further comprises a quick mounting-dismounting unit, wherein the quick mounting-dismounting unit is adapted to be provided the LED display module to fixed to the frame of display screen or removed from the frame of display screen quickly.