Abstract: An inertial control method of a wind turbine includes the steps of: acquiring frequency information of a power grid; calculating a time variant droop coefficient when the frequency information is reduced below a preset range; and controlling the wind turbine using the calculated time variant droop coefficient, wherein the step of calculating a time variant droop coefficient includes the steps of: collecting rotor speed information changing according to the inertial control; and calculating the time variant droop coefficient using the collected rotor speed information.

Abstract: A method of de-icing a wind turbine blade (5) comprises the steps of: generating heated air using heating means (10) provided in the root portion of the blade; and continuously circulating the heated air around the interior of the blade through at least a portion of two more longitudinal blade cavities (24, 26, 28) defined within the blade. The circulating step includes: channelling the heated air from an outlet (32a) of the heating means at least part way through a first longitudinal blade cavity (26), towards the tip end (18) of the blade; at a position along the length of the blade, diverting the heated air from the first longitudinal blade cavity (26) into a second longitudinal blade cavity (24); and channelling the diverted air at least part way through the second longitudinal blade cavity (24) back to an inlet (34) of the heating means (10). The heated air is circulated through at least a central cavity (24) and a leading edge cavity (26) defined between longitudinal webs (22) within the blade.

Abstract: The invention relates to a wind turbine having at least one measuring device (28) for measuring deformations of an elongated component of the wind turbine (1), such as a tower or a rotor blade. The measuring device (28) is part of a transmitting/receiving device with a remotely arranged reflector device (25), is mounted in a bracket (35), and has adjusting devices (41, 38) for precise adjustment and alignment of the measuring device (28) relative to the bracket (35). The adjusting device (41, 38) has a cam rotation device (41) at the bearing point of the adjusting device. The cam rotation device (41) has, at every bearing point, a cam disc (46) with an adjusting wheel, at least one ball disc (44) with an associated ball socket (45) and a clamping screw (43). The invention also relates to a method for adjusting and aligning a measuring device of the wind turbine (1), wherein the measuring device (28) is aligned in the horizontal and vertical direction by rotating the cam rotation device (41).

Abstract: A system for using solar and wind energy for electricity generation and thermal regulation. The system may include a high altitude wind turbine, which may generate electric power and conduct cold to the ground and the rest of the system. The cold may be conducted to a crystallization tank, which may also include an input for heat, for example from solar energy. Cold and heat from the crystallization tank may then be stored or used to heat or cool one or more buildings. Generated electric power may be used in conjunction with or separately from the heating/cooling system.

Abstract: A self-folding machine comprises a laminate including a flexible layer with a first side and a second side; a first rigid layer including at least one gap laminated to the first side of the flexible layer; a second rigid layer including at least one gap laminated to the second side of the flexible layer, wherein the rigid layers are more rigid than the flexible layer; a first contractible layer laminated to the first rigid layer and extending across at least one gap in the first rigid layer; and a second contractible layer laminated to the second rigid layer and extending across at least one gap in the second rigid layer, wherein the first and second contractible layers retract to respectively create folds in the machine across gaps in the first and second rigid layers when activated.

Abstract: A self-contained ion powered aircraft assembly is provided. The aircraft assembly includes a collector assembly, an emitter assembly, and a control circuit operatively connected to at least the emitter and collector assemblies and comprising a power supply configured to provide voltage to the emitter and collector assemblies. The assembly is configured, such that, when the voltage is provided from an on board power supply, the aircraft provides sufficient thrust to lift each of the collector assembly, the emitter assembly, and the entire power supply against gravity.

Abstract: A pump device for feeding pasty masses includes a piston pump having a cylinder with a piston connected to a pre-fill container via an inlet. The inlet is delimited by an orifice plate closeable with a slide valve. The slide valve includes pivotable base body, a housing and a closure surface facing inside the housing. The closure surface is formed at least partially by a surface of a valve piston movable relative to the base body. The valve piston enters a hollow space formed in base body when a pressure from the pasty masses is applied to valve piston from inside the slide valve housing. The valve piston enters the hollow space compressing a fluid. A cutting ring constructed as an annular piston having a surface facing the hollow space is pressed in a closed position of the inlet slide valve against the orifice plate by pressure from the fluid.

Abstract: A water pumping system that is operable to use air from an air pump to provide positive pressure to a submersible pump submersed in a body of water so as to provide extraction of water for use. The water pumping system includes a surface mounted air pump located proximate a body of water that is operable to produce an airflow exiting therefrom and is directed to the submersible pump. The submersible pump includes a first chamber and a second chamber that are parallel in manner and substantially hollow. The first chamber and second chamber are operably coupled with a union and have an opening opposite thereto. An air nozzle receives air from the air pump and forces air into openings of the first chamber and second chamber so as to move a piston therein to evacuate water from the first chamber and second chamber during downward movement of the piston.

Abstract: A pneumatically powered pump for liquid color adapted to fit partially within a liquid color container having a body portion of the pump within the liquid color container adapted to be mounted on the underside of the container lid and being a single piece of molded plastic overlying an aperture in the container lid.

Abstract: A pumping mechanism is disclosed that includes a plurality of peristaltic pumping actuators configured to selectively and sequentially compress adjacent portions of a first portion of an at least partially compressible pumping element having an inlet that is upstream of an outlet. The plurality of pumping actuators are further configured to reciprocate at a common drive frequency with a first phase offset between each adjacent pair of pumping actuators. The pumping mechanism also includes at least one compensation actuator arranged to selectively compress a second portion of the at least partially compressible pumping element that is disposed between the first portion and the outlet. The at least one compensation actuator is configured to reciprocate at an optimal displacement and at a modulation frequency that is an integer multiple of the fundamental drive frequency and with a second phase offset between the at least one compensation actuator and the adjacent pumping actuator.

Abstract: A check valve includes an internal liquid trap that prevents the backflow of gas and debris from degrading the valve. The internal liquid trap can be formed by internal passages within a valve housing. One embodiment includes a plurality of concentric fluid passages, connected by a set of radial conduits.

Abstract: A valve clack and an air pump having the same are provided. The valve clack includes a mounting column; a plurality of blades surrounding the mounting column and distributed in a circumferential direction of the mounting column, each blade defining a radial inner end connected with the mounting column and elastically swingable with respect to the mounting column, adjacent blades being spaced apart from each other by a rib, the rib defining an end connected with the mounting column, a buffer structure configured to provide a buffer space for deformation of the blade being provided in the blade adjacent to a position at which the blade is connected with the rib.

Abstract: A hydraulic conveying device for an internal combustion engine may include a pendulum slide pump including an inner rotor drivingly connected to an outer rotor via a plurality of pendulum slides. A hydraulic actuation device may change an eccentricity between the inner rotor and the outer rotor via an actuation member. The actuation member may be prestressed by a spring device. The actuation device may further include a first pressure-setting chamber and a second pressure-setting chamber for adjusting the actuation member. At least one of the first pressure-setting chamber and the second pressure-setting chamber may be connected via a control valve to a pressure side of the pendulum slide pump. A hydraulic line may connect the pendulum slide cell pump downstream to a hydraulic medium filter. The control valve may be connected to the hydraulic line upstream of the hydraulic medium filter.

Abstract: Implementations described herein comprise fluid rotary injection valve systems and apparatus configured to selectively allow a working fluid to pass from one chamber into another where the fluid flow occurs at predetermined times and flow rates. Such fluid rotary injection valve systems can be useful in connection with rotational equipment and particularly for high speed rotational equipment operating with differential internal and external process pressures.

Abstract: According to a scroll compressor associated with the present disclosure, the entire cross-sectional area of bypass holes formed at a compression chamber with a larger volume reduction gradient between the both compression chambers may be formed to be larger than that of bypass holes at the other compression chamber to prevent over-compression at the compression chamber with a larger volume reduction gradient, thereby enhancing the entire efficiency of the compressor.

Abstract: Devices and methods for maintaining lubrication of a shaft seal of an open-drive compressor that is operating in a vacuum condition. The external side of the shaft seal allows retention of a volume of lubricant for extending the lifespan of the shaft seal for the open-drive compressor. The devices can also reduce and/or prevent deterioration of the shaft seal regardless of the operation condition of the open-drive compressor. The devices can further reduce and/or prevent leakage of a lubricant and/or refrigerant that can cause deterioration of components within a transport refrigeration unit (TRU).

Abstract: Provided is a two-shaft rotary pump which is capable of improving reliability and operation efficiency by preventing an exhaust gas from flowing backward into a pump as much as possible, preventing the interior of the pump form being excessively compressed as much as possible, and suppressing temperature rise in the pump.

Abstract: A screw compressor utilizing radial and axial or thrust bearings to maintain the position of the rotors radially and axially and utilizing a damping fluid to dampen rotor vibrations. The damping fluid may conveniently be provided in the form of lubricant that is already used in the compressor to seal the clearances between the rotors and between the rotors and the cylinder during compression. The damping fluid is included in a squeeze film damper, arranged in a parallel arrangement with the radial or thrust bearings, which provides viscous damping to the rotor. The introduction of additional viscous damping such as may be provided by squeeze film dampers may result in significant reduction of compressor vibration regardless of the source of vibration.

Abstract: A scroll compressor is disclosed which prevents leakage of refrigerant from a compression chamber and abrasion of bearings between a rotating shaft and an orbiting scroll by reducing the tilting angle of the orbiting scroll, because the allowable bearing angle is equal to or larger than the tilting angle, where the allowable bearing angle ? refers to the maximum angle at which the orbiting scroll is tilted with respect to the rotating shaft, and the tilting angle ? refers to the angle at which the orbiting scroll is tilted with respect to the plate.

Abstract: A compressor is provided that may include a passage separator provided between an electric motor drive and a compression device to separate a refrigerant passage from an oil passage. The passage separator may include a first partition wall and a second partition wall. The first partition wall may be disposed between an inner circumferential surface of a casing and a discharge hole of the compression device, and the second partition wall may be disposed between the discharge hole and a balance weight. Accordingly, the refrigerant passage may be separated from the oil passage between the compression device and electric motor drive, thereby efficiently recovering oil to an oil storage space.

Abstract: A scroll compressor is provided that may prevent an oil-feeding hole from being blocked due to a high pressure refrigerant, which is compressed in compression chambers and introduced into the oil-feeding hole through an oil-feeding slit, by blocking one of both end portions of the oil-feeding slit, adjacent to the compression chambers, when the oil-feeding hole is formed through an outer circumferential surface of a bearing and the oil-feeding slit, which communicates with the oil-feeding hole, is formed on the outer circumferential surface. This may allow for smooth oil supply onto the outer circumferential surface of the bearing through the oil-feeding hole, thereby enhancing a bearing performance. Also, the oil-feeding hole or slit may be formed at a closest position to an oil feeding-required section, not within the section. This may allow for quick oil supply into the oil feeding-required section, resulting in further enhanced bearing performance.

Abstract: An electric compressor includes a compression part, a motor that drives the compression part, a cylindrical housing that accommodates therein the compression part and the motor, a supporting member, and a first vibration damper. The supporting member supports the housing and is configured to be fixed to a target to which the compressor is attached. The first vibration damper is disposed between the housing and the supporting member so as to keep the housing free from contact with the supporting member and the target. The first vibration damper has therein a hollow enclosed space.

Abstract: An electrical submersible pump assembly has a magnetic coupling between the motor shaft and the pump shaft. The coupling includes motor shaft disks mounted to the motor shaft, each having upward and downward facing disk surfaces joined by an outward facing disk cylindrical surface. Motor shaft magnets are mounted in each of the disk cylindrical surfaces and in the upward and downward facing disk surfaces. A pump shaft rotor mounted to the pump shaft has annular bands axially separated from each other by recesses into which the disks extend. Rotor magnets are mounted in each of the recess cylindrical surfaces and in upward and downward facing-band surfaces. The magnets in the recesses interact with the magnets on the disks.

Abstract: A hybrid coolant pump with two modes of operation, an electric motor operation and a mechanical pulley-driven operation. A friction clutch assembly is positioned inside the motor housing and includes a softening spring which minimizes parasitic clutch power consumption.

Abstract: The invention relates to a coolant pump (15) having a pump wheel (13) which is arranged on a pump wheel shaft (3, 11); and having a drive device (1; 8, 9) for the pump wheel (13), which drive device has a mechanical drive (1) and which drive device has an electric-motor drive (8, 9), wherein the pump wheel shaft is divided into a driving section (3) and a driven section (11), and an openable and closable clutch (4) is arranged between the driving section (3) and the driven section (11).

Abstract: An exhaust-gas turbocharger (1) having a compressor (2) which has a compressor housing (3); a turbine (4) which has a turbine housing (5); and a compressor-side and/or turbine-side charge pressure regulating device (6) which has a shut-off element (7) which opens or closes a flow opening (9). The shut-off element (7) is in the form of a slide which is mounted on a guide (8) so as to be longitudinally displaceable along a longitudinal central line (LM8) of the guide (8), and the flow opening (9) is arranged at least substantially at a right angle (?) with respect to the longitudinal central line (LM8) of the guide (8).

Abstract: A method for measuring an air volume of a blower motor, including: a) establishing M constant air volume control functions Qi=F(n) corresponding to M air volume points CFMi in a microprocessor of a motor controller; b) starting the motor, measuring a real-time rotational speed n0 and a parameter Q0 of the motor after the motor runs in a stable state, putting the parameter Q0 into the functions Qi=F(n) to obtain multiple rotational speeds ni, comparing the real-time rotational speed n0 with the multiple rotational speeds ni corresponding to the multiple air volume points CFMi, and determining a real-time detected air volume CFM0 which falls within two air volumes CFMi and CFMi-1; and c) calculating the real-time detected air volume CFM0 according to the two air volumes CFMi and CFMi-1 and the rotational speeds ni and ni-1 using an interpolation method.

Abstract: A method is described for providing antisurge control in a system comprising a compressor having at least an upstream compressor stage, a downstream compressor stage and a side stream bringing flow into a flow passage between the upstream compressor stage and the downstream compressor stage. The method provides for estimating a temperature of a flow delivered by the upstream compressor stage using a non-dimensional performance map of the upstream compressor stage and further estimating a temperature of a flow entering the downstream compressor stage based on the mass flow and flow temperature of the flow delivered by the downstream compressor stage and the mass flow and the flow temperature of the side stream. The method further provides for performing antisurge control of the downstream compressor stage based on the temperature of the flow entering the downstream compressor stage.

Abstract: A thermal actuator for a rotating shaft shutdown seal that has a piston with a portion of its axial length enclosed within a chamber shell with a material that expands upon a rise in temperature. The portion of the actual length of the piston within the chamber has at least two different diameters with the larger diameter leading in the direction of travel of the piston. Upon a rise in temperature, expansion of the material surrounding the piston within the chamber creates a force on the piston in the desired direction of travel. Below a preselected temperature the piston is positively locked with a passive release when the preselected temperature is reached.

Abstract: A pump impeller which includes: a back shroud having an inner main face with an outer peripheral edge and a central axis, the impeller in use being rotatable about the central axis in a direction of rotation, a plurality of pumping vanes extending from the inner main face of the back shroud, the pumping vanes being disposed in spaced apart relation, and each pumping vane including: opposed first and second side faces, a leading edge in the region of the central axis and a trailing edge in the region of the outer peripheral edge of the back shroud, and with a passageway between adjacent pumping vanes, wherein the first side face at the leading edge is in a plane which is at an acute angle with respect to a plane of the inner main face of the back shroud, and the first side face at the trailing edge is in a plane which is at an obtuse angle with respect to the plane of the inner main face of the back shroud.

Abstract: A centrifugal fan is described. The fan uses a blade that is tapered across the span of the blade. The taper can be larger towards the end opposite of the inlet or larger at the inlet. The blade may be backwardly inclined and/or curved. The fan may also include a turning vane.

Abstract: An impeller of an axial fan includes a cup-shaped blade support portion configured to cover a rotor holder, and blades arranged in a circumferential direction radially outside of the blade support portion. Rotation of the impeller generates a downward air flow. The axial fan includes first and second balance correction portions. The first balance correction portion is located between the blade support portion and the rotor holder. The second balance correction portion is located axially below the first balance correction portion, and is located axially below the rotor holder and a junction of each blade with the blade support portion. The impeller includes a first cone portion located axially below the second balance correction portion, and decreases in diameter with decreasing height.

Abstract: A water cooling fan with multiple air outlets includes a housing having two opposite sides respectively formed with an air inlet and a first air outlet, and its topside bored with at least one second air outlet. An evaporative cooling pad is provided in the interior of the housing and an air discharge tube is installed at the location of the second air outlet of the housing. Thus, the water cooling fan of this invention can carry out cooling and temperature modulation to a designated region via the first air outlet and simultaneously can make use of the air discharge tube to carry out heat dissipation to respective mechanical equipment or a person. Therefore, the water cooling fan with multiple air outlets of this invention is excellent in heat dissipation speed and cooling effect, able to enhance efficiency of mechanical equipment in factory and efficacy of energy saving.

Abstract: A heating pump includes a pump housing with an inlet, an outlet, a heater, an impeller, and a motor for driving the impeller. The impeller is received in the pump housing. The heater includes connecting heads and a main body for generating heat. The main body is bent into an arc. The pump housing includes a cylindrical sidewall extending in an axial direction of the motor and a top plate sealed to an axial opening of the sidewall. The top plate is made of metal. The heater extends through and is fixed to the top plate. The connecting heads extend to an exterior of the pump housing. The main body is located in an interior of the pump housing and in contact with the top plate.

Abstract: An impeller is equipped with: a disk part, having a cylindrical part into which a rotary shaft that rotates around an axis line is inserted, with a portion of the cylindrical part in the axis line direction of the rotary shaft being fixed to the rotary shaft as a grip part, and a disk main body part extending from the cylindrical part outward in the radial direction of the rotary shaft a blade part protruding from the disk main body part toward a side in a first direction in the axis line direction; a reinforcing member attachment part formed on the cylindrical part closer to a side in a second direction in the axis line direction than the disk main body part; and a reinforcing member formed of material having a higher specific strength than the disk part, and attached so as to cover the reinforcing member attachment part from the outside.

Abstract: A pneumatically actuated vacuum pump is disclosed, and includes a body defining a converging motive section, a diverging discharge section, at least one suction port, and a Venturi gap. The Venturi gap is located between an outlet end of the converging motive section and an inlet end of the diverging discharge section. The pneumatically actuated vacuum pump also includes a first check valve fluidly connected to the Venturi gap and the suction port. The pneumatically actuated vacuum pump further includes at least one second gap located in the diverging discharge section of the body downstream of the Venturi gap. A second check valve is fluidly connected to the second gap.

Abstract: Disclosed are a device and a method for controlling a hydraulic pump in a construction machine, the method including: checking whether a dynamic characteristic of an engine deviates from a predetermined permissible range when a load is applied to the hydraulic pump and a pump load reaches pump torque required by the hydraulic pump; when the dynamic characteristic of the engine deviates from the predetermined permissible range, applying a pump load to the hydraulic pump so as to increase the pump torque to predetermined torque with a predetermined change rate; collecting information which is generated when the pump load is applied; generating a new torque change rate map by generating a torque change rate for each load section based on the information collected in the information collecting step; and updating an existing torque change rate map to the new torque change rate map generated in the map data generating step.

Abstract: A drive control system of a hydraulic excavator includes a control device. When accelerating a turning body to a target turning speed, the drive control device controls an operation of the electric motor driving device such that the electric motor outputs high efficiency torque by which a highest electric power efficiency is obtained at the target turning speed. The control device controls an operation of an oil pressure supply device such that residual torque obtained by subtracting the high efficiency torque from target torque is output from an oil-pressure motor.

Abstract: An HST control mechanism includes a rotary member, a servo unit, a telescopic member, and a biasing device. The rotary member for controlling a displacement of a hydrostatic transmission (HST) is pivoted outside of a casing incorporating the HST. The servo unit includes a telescopically movable actuator and a valve controlling the telescopic movement of the actuator. The actuator is interlockingly connected to the rotary member. The servo unit is pivotally supported on the casing via a first pivot. The servo unit rotates centered on the first pivot as the rotary member rotates according to the telescopic movement of the actuator hydraulically controlled by the valve. The telescopic member is pivotally supported on the casing via a second pivot. The telescopic member is provided with the biasing device that biases the telescopic member and the rotary member toward a position corresponding to a neutral state of the HST.

Abstract: A downforce controller for an agricultural implement having a double-acting hydraulic cylinder. The cylinder is configured to be coupled to an agricultural row unit and an agricultural toolbar for transmitting a net downforce between the agricultural toolbar and the agricultural row unit. A first pressure in a first chamber of the cylinder and a second pressure in a second chamber of the cylinder have counteracting effects on the net downforce. A manifold coupled to the cylinder is in fluid communication with the first chamber. A pressure control valve coupled to the manifold is in fluid communication with the manifold and the first chamber.

Abstract: A magnet fastener includes a carrier having a unitary body with a base, a magnet support and a resilient shaft extending between the base and the magnet support. The magnet fastener also includes a magnet that is fixed to the magnet support. Advantageously the resilient shaft allows articulation the magnet support and magnet on the base without any ticking or rattling.

Abstract: A solenoid operated locking mechanism for securing a lockable rod to the solenoid locking mechanism. Several ball bearings are inserted or removed from a passageway through which the lockable rod must pass to a locking chamber. The plunger has a configuration of locking flats and recesses to determine whether the ball bearings are disposed in the passageway, which restricts the movement of the locking rod past the ball bearings, or whether the ball bearings are out of the passageway, which allows the lockable rod to enter or be removed from the locking chamber or socket. The position of the plunger is controlled by a pair of springs and the solenoid.

Abstract: Embodiments of the present disclosure provide a removable module and a housing for an attachment system of a consumer product. The removable module includes a locking mechanism comprising a first portion having a substantially planar top surface and second portion that comprises a substantially non-planar bottom surface. The first portion and the second portion are coupled together. The locking mechanism also includes a first spring mechanism coupled between the first portion and the second portion. The first spring mechanism causes the first portion to be biased away from the second portion. The locking mechanism also includes a second spring mechanism. The second spring mechanism causes the substantially planar top surface of the first portion to be biased substantially flush with respect to the removable module and also causes the substantially non-planar bottom surface of the second portion to be biased proud with respect to the removable module.

Abstract: Embodiments of the invention provide a clamp lock to secure a clamp around a pressure vessel, such as a split tank pool filter. The clamp lock includes a drive rack with at least one notch, and a housing with a rotatable drive gear, a locking pawl, and a receiving hole. The rotatable drive gear is capable of laterally moving the drive rack through the receiving hole, and the locking pawl is capable of engaging the at least one notch when the drive rack has been inserted a distance into the receiving hole. The distance correlates to a diameter of the clamp sufficient to secure the clamp around the pressure vessel.

Abstract: A bracket assembly is provided with a shell, a pivotal first curved member on one end of a recessed shell bottom, a pivotal second curved member on the other end of the shell bottom, a link including a slot, a first pin driven through the first curved member and the slot to fasten the first curved member and the link together, and a third hole at an other end, a cylindrical first actuation member, a cylindrical second actuation member, a second pin for fastening the first actuation member and the link together; a biasing member biased between the first stop member and the first actuation member; and a knob at a cap. A retaining device is also provided so that the sliding tube can slide in a transverse channel of retaining device, thereby adjusting length of the sliding tube.

Abstract: Embodiments of the present disclosure provide a removable module and a housing for an attachment system of a consumer product. The removable module includes a locking mechanism comprising a first portion having a substantially planar top surface and second portion that comprises a substantially non-planar bottom surface. The first portion and the second portion are coupled together. The locking mechanism also includes a first spring mechanism coupled between the first portion and the second portion. The first spring mechanism causes the first portion to be biased away from the second portion. The locking mechanism also includes a second spring mechanism. The second spring mechanism causes the substantially planar top surface of the first portion to be biased substantially flush with respect to the removable module and also causes the substantially non-planar bottom surface of the second portion to be biased proud with respect to the removable module.

Abstract: A coupling for mounting a structure to an object is provided. The coupling includes a pair of flanges releasably attachable to one another with planar surfaces thereof disposable in abutting relation. A plurality of linear slots is defined through one of the pair of flanges, and a plurality of arcuate slots is defined through the other of the pair of flanges. The linear and arcuate slots are arranged, shaped and dimensioned such that the flanges are alignable to overlap the linear and arcuate slots to define a plurality of through-bores for receiving fasteners, and such that they define a range of translational motion within which the flanges can be translated relative to one another and a range of rotational motion within which the flanges can be rotated relative to one another. At least one of the plurality of through-bores is maintained throughout the translational and rotational ranges.

Abstract: An axially adjustable threaded mounting snap fit connector that can be used to align the surface of a first component portion with a second surface adjacent to the first surface, wherein the connector can be snap fit to at least one second component having or adjacent to said second surface, and then the relative alignment or distance between the first surface and the second surface can be adjusted by axially turning the connector using the adjustable snap fit member portion that turns axially within the connector.

Abstract: The invention relates to a coupling for connecting construction parts, a truss provided therewith and associated method and use. The coupling comprises a female and a male coupling part. The female coupling part comprises: a tubular receiving part, in the wall of which an opening is provided; a ball which is placed in the opening and which is movable in radial direction of the receiving part; and a locking sleeve which is screwed onto and encloses the receiving part and which by being screwed is movable in the longitudinal direction of the receiving part between an opened position, in which the locking sleeve allows movement of the ball in the opening for the purpose of placing/removing the male coupling part into/from the receiving part, and a closed position in which the locking sleeve locks the male coupling part in the female coupling part with the ball, wherein the male coupling part is an elongate pin which comprises in its outer wall a groove for the ball.

Abstract: A beam clamp for securing a first beam to a second beam where the first and second beams are arranged in crossing fashion and define one or more quadrants, the beam clamp including a first clamping portion having a first clamping surface configured to engage a beam flange, a second clamping portion having a second clamping surface configured to engage a beam flange and being arranged in opposing relation to the first clamping surface defining a mouth, a base portion extending between the first and second clamping surfaces and having a wedge shape for engaging a corner defined by flanges of the crossing beams, and a securing mechanism configured for extending from one of the first and second clamping surfaces, into the mouth, to engage a surface a beam flange thereby pinching the flanges of the crossing beams together.