Abstract: An automated method for forming a packaged good article includes establishing a continuous path of travel for a mandrel. The mandrel defines an open interior between a package side and a loading side. With the mandrel at a first angle, a packaging material is wrapped about the mandrel at a first station along the path of travel to define a partial package. Product is dispensed into the partial package at a second station. With the mandrel at the second angle, the partial package and the mandrel are separated from one another at a third station. The first angle of the mandrel (at the first station) differs from the second angle of the mandrel (at the third station). The partial package is closed to form a packaged good article. In some embodiments, the mandrel is horizontal at the first station and is vertical at the third station.

Abstract: A cover at least partially protects at least one item from one or more falling objects. An exemplary embodiment provides a flexible cover having a top side and a bottom side and a perimeter; a plurality of fluid-filled pockets dispersed along the bottom side of the cover; a channel formed around the perimeter of the cover material to house a drawstring, the channel having an opening that exposes at least a portion of the drawstring; and a drawstring disposed within the channel, wherein the cover positioned over an item may be selectively at least partially secured in position by pulling on the drawstring through the channel opening. Alternative embodiments provide selectively inflatable bladders and side drape portions and kits therefor.

Abstract: A method for wrapping at least a portion of an article (22) including folding the wrapper material (60) to cover at least one first peripheral face (24, 30) such that each one of at least two first wrapper sections extends beyond a respective first lateral edge (32) of the at least one first peripheral face (24, 30) and such that each one of at least one second wrapper section extends beyond an upper edge (38, 40) of a respective one of at least one second peripheral face (30, 24), folding and securing each first section against one of the at least one second peripheral face (30, 24), and folding and securing each second section against the respective second peripheral face (30, 24). The wrapper material (60) remaining at least partially grabbed until at least one of the at least one second section is secured.

Abstract: A display device includes (a) a first mounting member containing a first film-mounting surface, wherein the first film-mounting surface demarcates a first opening in the first mounting member; (b) a second mounting member containing a second film-mounting surface, wherein the second film-mounting surface demarcates a second opening in the second mounting member; (c) a first elastomeric film mounted to the first film-mounting surface and extending across the first opening; (d) a second elastomeric film mounted to the second film-mounting surface and extending across the second opening; and (e) a chassis configured for supporting the first mounting member and the second mounting member. The first opening and the second opening are configured for oppositional alignment in the chassis, and the first elastomeric film and the second elastomeric film are configured to retain a display object in a region defined by an oppositional alignment of the first opening and the second opening.

Abstract: A method of fabricating a drug-transfer device includes forming a package having a first component retaining multiple volumes of a drug and a second component retaining an agent. The first component and the second component are integrally formed together. The agent is configured to suppress a physiological effect of the drug when the agent contacts the drug or is coadministered with the drug. The method allows exterior surfaces of the first and second components to be cleanable (e.g., prior to final assembly). After such cleaning, either no or substantially no amount of drug and agent is present outside the package. According to some embodiments, the package may be fabricated such that either no or substantially no amount of the drug is present within the second component and such that either no or substantially no amount of the agent is present within the first component.

Abstract: A packaging system 100 includes a controller 102, an input device 104 in communication with the controller 102 that identifies one or more characteristics of the container, and a manual input device 106 in communication with the controller 102 that provides multiple input options for selection by a packer. The input options represent relative degrees to which a container is filled by one or more objects to be packaged. The controller 102 provides an output signal indicating a quantity of dunnage to dispense to the container based on the selected input option and the one or more identified characteristics of the container. Once the controller receives the container characteristics information, as well as the selected input option representing the relative degree to which the container is filled by the objects to be packaged, the controller can determine the number and lengths of dunnage strips that need to be provided to fill the remaining void in the container.

Abstract: A fluid container is provided that comprises a body portion configured to at least partially surround fluid. The container also includes a cap portion connected to and above the body portion at a frangible separation site surrounding an opening between the body portion and the cap portion. The cap portion is configured to separate from the body portion at the separation site to expose the opening when a substantially downwardly directed force is applied to a part of the cap portion at a certain radial distance from a longitudinal axis through the opening. The container can include a collar configured to be disposed at least around a part of the body portion. A portion of the collar can be configured to facilitate separation of the cap portion.

Abstract: The present disclosure relates generally to load-bearing frame apparatus for a pack animals, and more particularly to a saddle for transporting cargo upon the backs of pack animals that may be adapted to carry a wide variety of different types and configurations of cargo. Examples of load-bearing apparatus may include a modular load-bearing frame, a load-distribution assembly, a hoist assembly, and/or a multiply-positionable link.

Abstract: A filter element support assembly for mounting a filter element to a tube sheet includes a plurality of elongated rods; a first clamp having a through-hole; the first clamp defining a plurality of rod seats sized to receive a first end of one of the rods; a clamp rod extending through the through-hole in the first clamp; a second clamp having a through-hole; the clamp rod extending through the second clamp through-hole; the second clamp being mounted against the first clamp; the second clamp having radially projecting bumps mounted against the rods adjacent to the first clamp to hold the rods in the rod seats; a plurality of feet; each foot being secured to a second end of one of the rods; and a handle secured to an end of the clamp rod.

Abstract: A vane-type separator with pockets for removing solid and liquid particles entrained in a gaseous stream. Vanes are fabricated from a plurality of modular sheet metal components which may be assembled to form vanes of varying lengths. The vanes further include pockets with rounded leading edges to encourage particulate to impinge on the vane and move into the pockets by surface tension. The device allows for a higher gas stream velocity before particulate is found downstream of the vane-type separator.

Abstract: A vane-type separator with pockets for removing solid and liquid particles entrained in a gaseous stream. Vanes are fabricated from a plurality of modular components which may be assembled to form vanes of varying lengths. The vanes include pockets with rounded leading edges to encourage particulate to impinge on the vane and move into the pockets by surface tension and aerodynamic forces. The vane-type separator allows for a higher gas stream velocity before particulate is found downstream of the vane-type separator.

Abstract: A filter formed by the following steps is provided.

Abstract: Herein is disclosed a pleated filter comprising an upstream face and a downstream face and comprising at least one flexible inextensible tridirectional scrim in discontinuous contact with the downstream face of the pleated filter and bonded to the pleat tips of the downstream face of the pleated filter. In additional embodiments, an additional tridirectional scrim may be provided in discontinuous contact with the upstream face of the pleated filter and bonded to the pleat tips of the upstream face of the pleated filter. In further embodiments, at least one continuous, substantially nonlinear adhesive strand may be provided on at least one face of the pleated filter.

Abstract: The invention is directed to a honeycomb comprising cordierite and beta-spudomene, the honeycomb a having total porosity of greater than 30% and a mean pore diameter of less than 5 ?m. The honeycomb is made from a mixture of activated kaolin and a mineral selected from the group consisting of lithium fluorhectorite, lithium hydroxyhectorite and mixtures thereof. In one embodiment up to 20 wt % SiO2, based on the total weight of the kaolin and minerals (fluarhectorite, hydroxyhectorite) is added and mixed therein prior to the formation of the green body. In another embodiment the amount of added SiO2 is up to 10 wt %. In one embodiment the total porosity is greater than 50% and the mean pore diameter is less than 5 ?m.

Abstract: A lawn mower comprising: a frame (10); actuating means (20) for moving said frame (10) relative to a work surface (L); one or more blades (30) mounted on said frame (10) for cutting the grass present on said work surface (L); a plurality of sensors (S1, S2) for generating detection signals (SR) representative of a distance of a mass (M) relative to said frame (10); a control unit (40) adapted to determine, as a function of said detection signals (SR), whether said mass is at a distance from said frame (10) which is included within a predetermined value range, and to adjust the operating conditions of said lawn mower (1) as a function of said detection signals (SR); a selection circuit (50) interposed in a circuit between said control unit (40) and sensors (S1, S2) and suitable to selectively enable a connection between each of said sensors (S1, S2) and an input of said control unit (40).

Abstract: A device allowing a user to removably attach a weed line trimmer to a lawnmower deck, allowing a user to activate the weed trimmer or automatically engaging during the mowing of a yard to trim areas beside the mower while mowing the yard, eliminating duplicate effort and also to relieve the stress of carrying the weed trimmer.

Abstract: An electrically powered two wheel mowing, trimming and edging apparatus is disclosed. A rotating cutting head is cantilevered in front of the wheels, with a battery positioned behind the wheels to act as a counterweight to the cutting head. A caster below the battery allows easy maneuverability and permits trimming in corners. The cutting head contains both metal cutting blades and filament line, and the operator selects which cutting tool he wants based on the type of foliage to be cut. The cutting head easily rotates from the horizontal to the vertical, allowing the apparatus to be used as an edge trimmer.

Abstract: The tool is made up of two rotors (1, 2), each one of them formed by a rotary axis of rotation (4, 4?) and at least one helix-shaped blade (5, 6), the axes of rotation (4, 4?) parallel to each other and parallel to the ground or lawn and separated by a distance less than the sum of the radii of the helices of each one of the rotors (1, 2). The blade(s) (5, 6) of one of the rotors (1, 2) has/have the shape of a right handed helix and the blade(s) (6, 5) corresponding to the other rotor (2, 1) show(s) the shape of a left handed helix, and one of the rotors (1, 2) consists of a driving rotor (1) and the other consists of a driven rotor (2). The machine derived incorporates at lest one double-helicoidal tool connected to at least one of the machine's wheels (14).

Abstract: A rotary lawn mower includes an internal combustion engine having a power take-off. The mower further includes a connector adaptor attached to the power take-off, and a lawn mower blade. A connector base of the mower is attached to the blade. The connector base and the connector adaptor have extensions designed to interlock the connector base with the connector adaptor. At least one of the extensions forms a J-shaped structure arranged longitudinally along an axis of rotation of the connector base and connector adaptor.

Abstract: The present disclosure relates to a harvesting attachment for a harvesting machine with a frame, wherein the frame includes an outer wall which defines a cavity and in the cavity at least one strut is arranged.

Abstract: A landscape care device has a first care tool embodied as a mowing device, a sweeping broom, or the like, and at least one second care tool in the form of a spring tine rake arranged in front of the first care tool and acting simultaneously or with time shift relative to the first care tool. A carriage with a front axle is provided, wherein only the spring tine rake is effective in front of the front axle of the carriage. The spring tine rake has spring tines and the spring line rake is designed such that the spring tines are effective by a substantially straight push movement exerted on the spring tine rake.

Abstract: A combine has a transverse crop residue baler disposed at the rear of the combine that moves integrally with the combine. The transverse crop residue baler can be towed by the combine and connected to the combine by two widely spaced-apart joints that permit only movement in the pitch axis. The transverse crop residue baler also can be disposed at the rear of and carried by the forward unit of an articulated combine.

Abstract: A high-strength cable is a high-strength cable that has a twisted layer 21 of non-metallic reinforcing elements in outer coatings. Reinforcing elements 41 and 42 have coating elements 50 and 60, fiber elements 51 and 61 of copolyparaphenylene-3,4?-oxydiphenyleneterephthalic amide disposed in the coating elements 50 and 60, and filling materials 52 and 62 filled between the fiber elements, respectively. The lateral compression stress of the fiber elements 51 and 61 of the copolyparaphenylene-3,4?-oxydiphenyleneterephthalic amide is 75 cN/dtex or more.

Abstract: A gas turbine includes a disk rotatable about a rotational axis, when turbine rotor blades for receiving combustion gas obtained by burning fuel are connected to the side periphery, and energy of the combustion gas received by the turbine rotor blades is transmitted, and a radial passage that, in a cross-section at a virtual curved plane that is a curved plane about the rotational axis and in which distances from all points on the curved plane to the rotational axis are all equal, is a hole formed to include a portion having a shape in which the length in the circumferential direction of the disk is longer than the length in the direction parallel to the rotational axis, and is formed in the disk from the side of the rotational axis toward the outside of the disk.

Abstract: This guard can be built of this wire material and put in frame so that it fits In the air intake of the jet engine to stop any bird or a piece of debris being sucked in. This would include not only commercial or any jet aircraft that has a frontal air intake including military or any other manufacture of aircraft that uses jet engines for power.

Abstract: A heated guide vane for turbomachinery includes a guide vane having two major surfaces joined about their periphery by edges and an electric heater element, wherein the electric heater element is secured to at least one major surface of the guide vane.

Abstract: An electronic propulsion engine that creates a propulsive force or thrust using electromagnetic forces or electrostatic forces, with an effect that is similar to the thrust of a jet or rocket engine. Forces are generated using electromagnets or capacitor plates that are separated by dielectric spacer cores and are operated with two modulated currents. The two modulated currents are synchronized, but with a relative phase such that the forces on the two magnets or capacitor plates are not balanced. Included are techniques to reduce circuit impedance and control electric-magnetic field dispersion, such as tuned LCR circuits, dielectric core materials between the magnets or capacitor plates, and RF superconductors result in high propulsion efficiencies. The system operates at RF frequencies and can also be used as a communication device.

Abstract: An expander cycle rocket engine includes a primary nozzle with a heat exchanger formed therein to cool the nozzle and heat up a fluid used to drive a turbo-pump, and a secondary heat exchanger is located within the primary nozzle and includes passages to channel the fluid in order to add additional heat to the fluid used to drive the turbo-pump. The secondary heat exchanger can be a nozzle shaped heat exchanger located within the primary nozzle, and struts that secure the nozzle shaped heat exchanger within the primary nozzle and channel the fluid between nozzles. The concentric arrangement of first and second heat exchangers can transfer more heat from the combustion gases to the fluid that is used to drive the turbo-pump such that higher pressures can be obtained allowing for larger nozzles and much higher thrust than can be obtained with traditional nozzle engines, or provide significantly higher chamber pressures for engines in the prior art thrust class.

Abstract: A coolant system for a rocket propulsion system having a rocket engine and a propellant tank includes a first heat exchanger that is operatively coupled to the rocket engine. The cooling system also includes a second heat exchanger that is operatively coupled to the propellant tank, a coolant tank that is configured to hold a coolant, and a pump. The cooling system also includes a flow circuit, through which the coolant flows with the aid of the pump. The flow circuit is defined by the pump, the first heat exchanger, the second heat exchanger and the coolant tank. The coolant is pumped by the pump from the coolant tank to the first heat exchanger. The heat of combustion from the rocket engine is transferred to the coolant to cool the rocket engine. The heated coolant transfers the heat therein to the propellant with the second heat exchanger, thereby causing a pressure of the propellant in the propellant tank to be maintained at a desired level.

Abstract: Multiple-use rocket engines and associated systems and methods are disclosed. A method in accordance with a particular embodiment includes launching a two-stage vehicle have a first stage and a second stage carried by the first stage. The first stage can be powered with a first rocket engine having first rocket engine components, including a first combustion chamber, arranged in a first component configuration. The method can further include separating the second stage from the first stage, and powering the second stage with a second rocket engine having second engine components arranged in a second component configuration. The second rocket engine components can include a second combustion chamber that is interchangeable with the first combustion chamber. In further particular embodiments, recovered engine components from the first stage may be used to power the second stage of the same or a different two-stage vehicle.

Abstract: A valve system intermediate a secondary flow path and a primary flow path to selectively communicate secondary airflow into the primary gas flow path and control airflow injected from a higher pressure plenum into a lower pressure flowpath.

Abstract: A method of assembling a thrust reverser assembly for use in an aircraft gas turbine propulsion system. The method includes coupling a translating cowl to a fixed cowling, such that the translating cowl at least partially covers an engine, and is movable between an open position and a closed position. A rod end assembly is coupled to the translating cowl and an actuator is coupled to the rod end assembly, such that the actuator is movable between a first position and a second position. A torque bracket is coupled to the rod end assembly. The torque bracket includes at least two arms that each extend outward from the rod end assembly, such that a bending loading induced to the rod end assembly is induced to the translating cowl by the torque bracket.

Abstract: A fluid tank structure is disclosed that is integrated within a bypass duct of a turbofan gas turbine engine. The fluid tank structure includes a hollow interior that is closed off when the fluid tank structure is coupled with an inner wall of the bypass duct. The inner wall forms one wall of a fluid tank volume enclosed by the fluid tank structure.

Abstract: A cooling system is provided for an engine of a rotorcraft configured to generate a downwash into an atmosphere during operation. The system includes an inlet coupled to the engine and configured to receive a liquid from the engine; an outlet coupled to the engine and configured to return the liquid to the engine; and a body defining a conduit having a first end coupled to the inlet and a second end coupled to the outlet such that the liquid flows from the inlet to the outlet through the conduit and transfers heat to the atmosphere via the downwash from the rotorcraft.

Abstract: An aircraft gas turbine engine includes a counter-rotatable generator driven by a turbine includes a generator stator and counter-rotatable radially inner pole and outer magnet rotors. A gearbox may be used for counter-rotating the pole and magnet rotors. Counter-rotatable first and second sets of booster stages may be co-rotatable with corresponding ones of the pole and magnet rotors. The generator and the gearbox may be disposed within a booster cavity or a tail cone of the engine. The magnet rotor, the pole rotor, and the stator may be concentric. A particular embodiment of generator includes the magnet rotor encircling the pole rotor, the pole rotor encircling the stator, a rotor air gap between the magnet and pole rotors, and a transformer air gap between the pole rotor and the stator. The counter-rotatable generator may be driven directly by a counter-rotatable turbine.

Abstract: The invention relates to In an operating and diagnostic method for an SCR exhaust gas aftertreatment system which has an SCR catalytic converter with ammonia storage capacity, a signal of an exhaust gas sensor that is sensitive to nitrogen oxide and ammonia and is arranged downstream of the SCR catalytic converter, is measured. In a normal operating mode, ammonia is supplied to the SCR catalytic converter corresponding to a filling level model for ammonia stored in the SCR catalytic converter, in such a way that the ammonia filling level of the SCR catalytic converter is held at least approximately at a predefinable nominal value (or value range). The normal operating mode is interrupted if an exhaust gas sensor signal that exceeds a predefinable first limit value, is registered, and the set urea dosing rate is increased by a predefinable degree in relation to the value provided in the normal operating mode.

Abstract: A method for monitoring the ammonia-selective catalyst reduction device includes monitoring states of parameters of the exhaust gas feedstream upstream of the ammonia-selective catalyst reduction device, analytically segmenting the ammonia-selective catalyst reduction device into a plurality of discrete substrate elements, sequentially calculating a change in ammonia storage for each of the discrete substrate elements, and determining a total ammonia storage concentration on the ammonia-selective catalyst reduction device based upon the sequentially calculated change in ammonia storage for each of the discrete substrate elements.

Abstract: An internal combustion engine with multiple cylinders and injection valves that are provided for the cylinders and that meter fuel also comprises an exhaust gas tract in which an exhaust gas catalytic converter is arranged. A characteristic value (OSC) of an oxygen storage capacity of the exhaust gas catalytic converter is determined. In accordance with the characteristic value (OSC), a heating measure (HM) for heating the exhaust gas catalytic converter is carried out.

Abstract: An exhaust gas purification system includes a casing through which exhaust gas is allowed to flow, an oxidation catalyst provided in the casing, a particulate matter collector located downstream of the oxidation catalyst in the casing as viewed in the direction of exhaust gas flow and spaced apart from the oxidation catalyst to form a space therebetween, an SCR catalyst integrated with the particulate matter collector, and a urea water supply device for supplying urea water to the space between the oxidation catalyst and the particulate matter collector. The casing is for being mounted to an engine assembly.

Abstract: In a method for regenerating s catalyzed diesel particulate filter (DPF) via active NO2-based regeneration with enhanced effective NO2 supply, a NOx containing gas is introduced into the DPF, and a temperature of at least one of the DPF, the NOx containing gas, and soot in the DPF is controlled while control Sing NOx levels at an inlet of the DflF so that the NOx containing gas reacts with the catalyst to form N 02 molecules that thereafter react with soot particles to form CO, CO2, and NO molecules and a N02 efficiency is greater than 0.52 gC/gNO2 and so that less than two thirds of the soot mass that is removed from the DPF is oxidized by 02 molecules in the gas to form CO and CO2 molecules.

Abstract: The invention relates to a procedure for a switching pressure calculation at a metering valve of a fuel metering device for metering fuel into an exhaust gas system of a combustion engine with a component that is assigned to the exhaust gas system of the combustion engine for a regeneration, for a temperature impinge and/or for a thermo management, whereby the fuel is injected before this component in streaming direction of the exhaust gas. The invention concerns furthermore a corresponding device for implementing the procedure.

Abstract: An exhaust gas purification device (1) comprising a main exhaust passage (2) and a branch exhaust passage (3) connected to an exhaust passage (100) on the engine side; shutoff valves (4A) and (4B) capable of shutting off exhaust gas at the exhaust inlets (2a) and (3a) of the main exhaust passage (2) and the branch exhaust passage (3); a nitrogen oxide adsorbing material (5); an adsorbed material detachment unit (6), having an air nozzle (61); and a combustion device (7) including an air nozzle (71), a fuel nozzle (72) and an ignition plug (73), wherein the exhaust gas from the exhaust passage (100) on the engine side is discharged directly from the exhaust outlet (3b) of the branch exhaust passage (3).

Abstract: Disclosed is a working machine capable of preventing damage to a filter due to excessive accumulation of particulate matter (PM), even under a situation that requires, prior to compulsory regeneration of the filter, moving the machine to a place in which to perform the regeneration work. The working machine that includes an exhaust treatment device 4 having a filter 6 to trap the PM, a regeneration control section 31 for compulsorily regenerating the filter, and a regeneration instruction device 23 for instructing the regeneration control section 31 to start the compulsory regeneration. Further, when a deposition quantity estimating element determines that an actual PM deposition quantity has reached a deposition alarm level, an alarm device 12 notifies an operator that the time has come to start the movement of the working machine to the place of regeneration.

Abstract: In one exemplary embodiment of the present invention, an exhaust aftertreatment system is disclosed. The system includes an oxidation catalyst (OC) that is configured to receive an exhaust gas flow from an engine. The system also includes an uncoated particulate filter (PF) that is configured to receive the exhaust gas flow from the OC. The system further also includes an exhaust fluid (EF) dosing device configured for dosing of an EF into the exhaust gas flow upstream of the uncoated PF. Still further, the system includes a selective catalyst reduction (SCR) catalyst that is configured to receive the exhaust gas flow from the uncoated PF, wherein the OC, uncoated PF and SCR catalyst comprise an exhaust aftertreatment system. A urea injector may be provided as the EF dosing device and arranged to inject urea, for example, into the exhaust gases upstream of the uncoated PF.

Abstract: The proposed device for controlling vortex structures (5) in a turbulent air jet (3) flowing out of the air exhaust channel, which is constituted by at least one pair of needles (1) connected to an AC voltage source to create a pulsating corona discharge between the needles. One needle is located along and the other across the flow to produce a resonant effect of the pullsating corona discharge on the vortex structures. hi the proposed method for controlling vortex structures in a turbulent air jet, at least one pair of needles connected to an AC voltage source to create a pulsating corona discharge between the needles. One needle is located along and the other across the flow to produce a resonant effect of the pulsating corona discharge on the vortex structures.

Abstract: This new type of vehicle engine is a zero emission engine. It uses low consumption of electric power from electric batteries, which is transformed in hydraulic power through the hydraulic pumps system, which is transformed in mechanical power through the cylinders of the engine. The engine develops a great mechanical force based on the fact that electrical force is multiplied by hydraulic force and the fact that liquids do not compress when a mechanical force is applied on.

Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.

Abstract: Methods and apparatus to charge accumulators are described. An example system to charge an accumulator apparatus includes a piston disposed within a housing to define a first chamber adjacent a first side of the piston and a second chamber adjacent a second side of the piston. A fill probe having a body and a passageway between a first end of the fill probe and a second end of the fill probe removably couples to the piston to fluidly couple to the passageway of the fill probe to the second chamber of the housing when the accumulator is in a charging condition. A valve is fluidly coupled to the piston to enable fluid flow to the second chamber of the housing via the piston when the fill probe is coupled to the piston.

Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.

Abstract: Hydraulic transmission system for a mineral material processing plant, which transmission system comprises at least two hydraulic first motors, which are arranged to drive at least one conveyor belonging to the mineral material processing plant, at least two first directional valves connected via the first actuator channels of the directional valves to each of the first motors, a hydraulic pump arranged to transfer hydraulic fluid via the first actuator channels of the directional valves to the first motors. The system also comprises pressure sensors. The first directional valves are valves that can be adjusted by external control during the running of the processing plant and which are arranged to control the volume flow of the hydraulic fluid supplied into the first motors. The control is made on the basis of the pressure of hydraulic fluid measured by pressure sensors in the first actuator channels the directional valves.