50 results about "Dirty environment" patented technology

A polymer-dispersed liquid crystal based display is embedded inside a lightguide illuminator sheet which provides illumination of the display without the need for a backlight or frontlight. Light from one or more light sources is coupled into the lightguide sheet and is guided within a range of high angles of incidence within the sheet by total internal reflection. The guided light illuminating portions of the display which are in diffusing state is scattered such that some of the light is allowed to escape total internal reflection, providing visibility of the display. Guided light illuminating portions of the display which are in non-diffusing state remains guided within the lightguide illuminator sheet. Combining multiple lightguide embedded displays can be used to provide a three-dimensional display. When a low refractive index cladding is applied to the surfaces of the lightguide embedded display, the display is robust in a dirty environment, and/or can be laminated to adjacent lightguide embedded displays. The use of one or more coupled light sources, such as light emitting diodes, provides color by combining one or more colored light sources or by time-sequentially driving one or more colored light sources. The lightguide illuminator embedded display may further be used as a content dependent active backlight for an LCD display panel to provide improved dynamic contrast.

The invention discloses an inertial navigation method applicable to AGV storage, which comprises the following steps of S1, building a navigation system; S2, reading magnetic marker data; S3, acquiring trolley offset data; S4, programming a route; S5, acquiring gyroscope angle; S6, correcting the angle; S7, reading RFID; S8, determining an operational mode; S9, controlling movement; and S10, repeating the steps S2-S9. According to the invention, the magnetic marker is adopted to replace a magnetic stripe and a two-dimension code, so that the cost is saved, and the defect that the two-dimension code is influenced seriously by dirty environment at the same time, and the trackless navigation can be realized; the system is accurate in measurement position, the positional accuracy can be +/-5mm, the angle accuracy is +/-0.1 degree, the navigation accuracy is high and can be +/-10mm and the navigation speed is 1m/s, and the resource is saved effectively.

Connections between drill pipe sections and drill bits used for boring into the earth may comprise two elements threadably attachable one to another. A first element may comprise a rotor rotatable with respect to a stator. A second element may thread to the stator. As it does so, the second element may rotationally fix itself to the rotor allowing for connecting elements on the second element and the rotor to align. These connecting elements may remain aligned while the second element and rotor rotate with respect to the stator. Such alignment may allow for a connection to be kept clean and free from contamination in otherwise wet and dirty environments.

A weapon protection device for enclosing a weapon. The weapon protection device protects the weapon from adverse conditions, including water, dust, dirt and sand. The weapon protection device features a transparent or translucent material that is impervious to water and is lightweight. The material is highly flexible and stretchable. The weapon protection device is compact when not in use and requires very little storage space. The weapon protection device allows a user to fire the weapon with either hand while the weapon is inside the protection device. The weapon protection device is designed to be a shoot-through device, which can be used where a weapon must be transported through a wet and/or dirty environment. The weapon protection device allows the weapon to be used on short notice and does not require removal of the weapon from the weapon protection device in order to use the weapon. A clear window is provided in the device in line with the standard projection sight (such as a laser sight) on the weapon so that the sight can be used even if the weapon is in the weapon protection device. A waterproof opening seal, such as a dry sack seal, is provided.

A fastener removal device for accessing and securing a fastener head while in a dirty environment features a cylindrical nut driver. A driver first end features a nut driver head having a hexagonal recess centrally located on a nut driver first end surface. A bottom surface of the hexagonal recess is located on a hexagonal recess plane. The hexagonal recess plane is located parallel to and offset from the nut driver first end surface. The hexagonal recess is adapted to engage with a head of a fastener. A plurality of helical flutes is located around a driver first end outer periphery. A flute first end intersects the nut driver first end surface. A flute second end intersects the hexagonal recess plane. The driver second end features a hexagonal shank adapted to engage a drill chuck of a drill.

This invention discloses an electronic control system for an Industrial Motor Operator that uses standard steady state logic to improve reliability in rough service wet and dirty environments. It includes means of providing electronic snow limit to close limit sensing removing the need for two switches and radically improving its accuracy. A low voltage switch reverses the high voltage motor wires and at the same time reverses the open limit, close limit, and snow limit sensors mechanical positions. It discloses a system using lamps to indicate that the power wiring is connecting to three-phase motors in the correct sequence or that single-phase motors have their windings correctly phased.

A device and method capable of measuring the optical rotary and linear position of items, that is reliable, accurate and capable of operating in harsh environments. The present invention utilizes optics to measure rotary and linear position. Unlike the prior art the present invention relies on the optical angle to determine position rather than an analog signal or intensity. Because of this, the present invention is capable of providing accurate results in high temperature, harsh and dirty environments. Further, the present invention reduces the need for time consuming and costly replacements at the sensing end.

A filter to clean the air entering an alternator in a vehicle used in a dirty environment such as a crop harvesting machine includes a mesh filter which is coupled to an air intake of the alternator. The filter is constructed of a mesh material which is flexible and includes relatively small apertures. The apertures prevent chaff and other extraneous material from entering the alternator, while allowing air to flow freely into the alternator, preventing overheating. The flexible mesh sleeve can be vibrated during operation, as, for example, by the flow of air from the engine fan, to provide a self cleaning function in which the vibration causes extraneous material to be shook from the filter.

The invention discloses an agricultural machinery material conveying chain, which solves the problem of inconvenient replacement of parts of the existing agricultural machinery material conveying chain. It includes a left chain and a right chain arranged in parallel. The left chain and the right chain are connected by a number of rigid connectors. Both the left chain and the right chain are composed of a number of chain links with the same structure connected end to end in sequence. The chain rings are made of metal bars. Curved structure, including the buckle section with the buckle hole around, the contraction section that shrinks to the two ends of the buckle section, and the hook section that extends upward to the contraction section and bends toward the left and right sides. The two adjacent chains The ring is buckled into the buckle hole of the next link through the hooking section of the previous link, and the surface of the link and the connecting piece are treated with electrophoretic paint for anticorrosion. The agricultural machinery material conveying chain of the present invention can be used only by replacing the corresponding link parts after being damaged by external force. Stuck.

The invention discloses a split type tubular cooler for heat exchange of metal part quenching and tempering media. The split type tubular cooler comprises a shell and an exchanging body. The exchanging body comprises red copper pipes or stainless steel pipes, three cleaning plates and two end cover plates, wherein the red copper pipes or the stainless steel pipes, the three cleaning plates and the two end cover plates are arranged into a whole. The inner side of the end cover plate at the medium inlet end and a flange plate of the shell are connected in a sealed mode through an O-shaped oil-resistant sealing ring and a bolt, and the outer side of the end cover plate at the medium inlet end and a sealing cover are connected in a sealed mode through an O-shaped sealing ring and a bolt. The end cover plate at the medium outlet end and the shell are connected in a sealed mode through a stainless steel bolt and a round oil-resistant sealing ring, and a flange plate, at the medium outlet end, of the shell and a sealing cover are connected in a sealed mode through an O-shaped sealing ring and a bolt. According to the split type tubular cooler for heat exchange of the metal part quenching and tempering media, dirt on the wall of the pipe can be removed conveniently and rapidly without dismounting the whole exchanging body, and time is saved; in a particularly dirty environment, each accessory of the exchanging body can be dismounted to be thoroughly washed to be cleaner; meanwhile, when leakage happens to any one of the red copper pipes of the stainless steel pipes, the leaking pipe can be replaced independently.

The invention provides a vehicle-mounted switch device of a high-speed train. The vehicle-mounted switch device comprises a box body, wherein the box body is connected among a next-compartment incoming cable, a current-compartment incoming cable and a pantograph incoming cable, an electrical apparatus component is arranged in the box body, and the box body is of a sealing structure and is filled with a sulfur hexafluoride gas. The vehicle-mounted switch device of the high-speed train has the advantages that the sulfur hexafluoride is adopted as a fully-sealed structure of an insulation medium, the influence of a dirty environment condition and altitude is avoided, the insulation strength is improved, no maintenance can be achieved, and the problem of insulation unreliability brought by that the existing vehicle-mounted switch devices of the high-speed trains are arranged at the roof and the bottom of a vehicle in a scattered and exposed way is solved.

The invention relates to a flat gap lightning arrester based on short arc potential drop and near cathode effect stacking; the flat gap lightning arrester comprises an insulation core rod, a plurality of flat discharge electrodes axially sleeving the insulation core rod, a fixed seat arranged on the low voltage end of the insulation core rod, a low voltage electrode inserted into the fixed seat, a main gap discharge electrode arranged on the insulation core rod high voltage end, and a silicone rubber oversheath made by a silicone rubber sulfuration technology, wherein the silicone rubber oversheath is used for fixing the insulation core rod, the plurality of flat discharge electrodes, the fixed seat, and the main gap discharge electrode; the plurality of flat discharge electrodes are evenly arranged in parallel; no zinc oxide resistance card is needed, thus providing green and environmental protection effect, and solving the problems that the zinc oxide resistor disc is prone to fail and get wet; the arc extinguishing mechanism comprises near cathode effect stacking, near electrode potential drop stacking and chamber arc blow-out, thus effectively reducing the arc over rate caused by lightning stroke on an aerial conductor, and effectively reducing the line lightning stroke trip-out rate under extreme conditions like a heavy thunder area and severe moisture and dirty environment.

The invention discloses a double-stage screw type air compressor which comprises a base. A motor is arranged on the base. The motor is provided with a frequency converter. An air compressor main engine is arranged at one end of the motor. An air filtering mechanism is arranged at the upper end of the air compressor main engine. An oil and gas separator is arranged on one side of the air compressormain engine. The air compressor main engine and the oil and gas separator are connected through an oil and gas mixing pipe. A minimum pressure valve is arranged on the top of the oil and gas separator. A heat exchanger is arranged on one side of the oil and gas separator. The heat exchanger and the minimum pressure valve are connected through an air pipe. The air filtering device comprises a first stage filtering device and a second stage filtering device. The first stage filtering device and the second stage filtering device are connected in series through a pipeline. The second stage filtering device is connected with the air compressor main engine. By arranging the first stage filtering device and the second stage filtering device, the air purification effect is improved, and the stability and the service life of the air compressor operating in a dirty environment are ensured.

The invention discloses an anti-fouling T-shirt for lovers. The anti-fouling T-shirt comprises a stable inner container mechanism, external protection mechanisms, shoulder shaping mechanisms and interlayer anti-fouling mechanisms, the external protection mechanisms are attached to the outer walls of the periphery of the stable inner container mechanism, the shoulder shaping mechanisms are arranged at the top ends of the external protection mechanisms, and the interlayer anti-fouling mechanisms are distributed in the external protection mechanisms. According to the anti-fouling T-shirt for the lovers, the shape of the whole inner container is kept fixed in the mode that the anti-fouling T-shirt is distributed in the inner wall of the periphery of the inner container, the T-shirt is prevented from deforming in the cleaning or airing process, when a user faces a dry and dirty environment, the external protection mechanisms solve the problem that the body of the user is dry and dirty in the outdoor environment, and embarrassment caused by the user in the outdoor environment is avoided; the shoulder shaping mechanisms and the interlayer anti-fouling mechanisms have the function of keeping the shoulder positions shaped in the wearing process, and through mixed weaving of spandex and bamboo charcoal fibers, the T-shirt has the characteristics of dirt prevention, oil prevention and permeation prevention, and the whole T-shirt has the anti-fouling capacity.

The invention relates to a heat dissipation type high-carrying-capacity pouring bus used for a heat pipe radiator. The pouring bus comprises a bus sealed in an insulating pouring material; the pouringbus is characterized in that an insulating thermal conducting ceramic layer and the heat pipe radiator are arranged in the pouring bus by taking the bus as the center from the inside to the outside in sequence; the heat pipe radiator consists of a plurality of heat pipes and heat pipe heat dissipation fins; the heat pipe evaporation sides are arranged tightly close to the position of the insulating thermal conducting ceramic layer; the bus, the insulating thermal conducting ceramic layer and the heat pipe evaporation sides are poured in the pouring bus through the insulating pouring material;the heat pipe condensation sides extend to the outside of the pouring bus; and the heat pipe heat dissipation fins are arranged on the exterior of the pouring bus and are fixedly connected with the condensation sides of the multiple heat pipes. By virtue of the pouring bus, the insulation requirement in the severe working environments of a humid environment, a dirty environment, an environment with explosion safety and the like can be satisfied, the heat dissipation condition of the high-carrying-capacity bus can be highly improved, and the heat conducting coefficient which is several times or even dozens of times of that of the conventional heat conducting material can be obtained.