Abstract: A screw vacuum pump comprises a housing forming a pumping chamber, wherein the housing is made of aluminum or an aluminum alloy. Further provided are two screw rotors arranged in the pumping chamber, each screw rotor comprising at least one displacer element having a helical recess for forming a plurality of windings, wherein the at least one displacer element is made of aluminum or an aluminum alloy. Between the region in which prevail 5% to 30% of the outlet pressure and a pressure-side end of the rotor (pump outlet), at least six, particularly at least eight, and with particular preference at least ten windings are provided.

Abstract: A system for a utility vehicle has a screw compressor and an electric motor. The electric motor drives the screw compressor. The electric motor is connected to the screw compressor by a flange which has at least one cooling connection, and a cooling channel is provided in the flange.

Abstract: The invention refers to a rotary compressor arrangement (100) comprising a stationary member (40) centered at a shaft axis (X) and a rotary member (90) rotating around the stationary member (40); the stationary member (40) and the rotary member (90) being inside a hermetically sealed inner volume within the compressor arrangement (100); the compressor arrangement (100) comprising a stator (210) with a winding arrangement (211) generating an electromagnetic force inside the stator (210), the stator (210) being arranged outside the hermetically sealed inner volume; the compressor arrangement (100) further comprising a plurality of magnets (221) directly attached to the rotary member (90) and facing the winding arrangement (211) in the stator (210) such that the rotary member (90) is entrained in rotation by a rotating electromagnetic field from the stator (210). The invention further refers to a cooling/refrigerating system comprising such a rotary compressor arrangement (100).

Abstract: A rotary cylinder type compressor includes: a cylinder that is rotatably placed in an inside of a housing; a rotor that is placed in an inside of the cylinder and is rotatable about an eccentric axis that is eccentric to a rotational central axis of the cylinder; and a partition member that partitions a working chamber formed between an outer peripheral surface of the rotor and an inner peripheral surface of the cylinder into a suction space and a compression space. When a pressure of fluid in the compression space is equal to or larger than a reference pressure, a contact stress, which is exerted at an adjoining portion between the outer peripheral surface of the rotor and the inner peripheral surface of the cylinder, is increased in comparison to a case where the pressure of the fluid in the compression space is smaller than the reference pressure.

Abstract: The present invention relates to a cluster assembly and an electric compressor comprising the same and, more particularly, to a cluster assembly which has an improved insulation structure and is convenient to install, and an electric compressor comprising the same.

Abstract: A compressor system is provided that includes a contact cooled compressor and a coolant separator. The coolant separator is used to remove coolant fluid from a compressed flow stream produced by the contact cooled compressor during its operation. The coolant separator routes the removed coolant fluid back to the contact cooled compressor for further use. In some forms the coolant fluid is cooled prior to delivery back to the compressor. A stop valve can be provided in the coolant fluid return line to halt the flow of the fluid. A pressure sensitive member can be disposed to sense pressure of the coolant fluid that has been routed past the stop valve. Operation of the compressor can be changed as a result of the sensed pressure from the pressure sensitive member. Information from a temperature sensitive member can also be used to change operation of the compressor.

Abstract: A cooling system is configured to operate in one of three modes, a DX mode of operation when outdoor air is too hot or too humid and the cooling system operates as a normal closed circuit system, a hybrid mode of operation when outside temperatures cool down and the cooling system operates as a partial reduced normal closed circuit system and a free cooling system, and a thermosiphon mode of operation when the outside temperature is below a predetermined temperature and the cooling system operates without the normal closed circuit system. The cooling system includes a scroll compressor unit having a main casing, a scroll compressor supported by the main casing, and a refrigerant pump supported by the main casing. The scroll compressor unit is configured to selectively engage the scroll compressor and the refrigerant pump to achieve one of the DX mode, the hybrid mode, and the thermosiphon mode.

Abstract: A screw compressor for a utility vehicle includes a housing. The housing is filled with oil. At least one pair of compressor screws are mounted in the housing and serve to compress air supplied to the screw compressor. In the assembled state, a heat exchanger is directly placed onto and installed on the housing, by which heat exchanger the temperature of the oil contained in the housing can be controlled.

Abstract: A regenerative turbine impeller includes a first side and a second side. An impeller housing surrounds the regenerative turbine impeller. The impeller housing includes a seal separating the first side and the second side of the regenerative turbine impeller. A first fluid inlet is fluidically coupled to the first side of the regenerative turbine impeller. A first fluid outlet is fluidically coupled to the first side of the regenerative turbine impeller. A second fluid inlet is fluidically coupled to the second side of the regenerative turbine impeller. A second fluid outlet is fluidically coupled to the second side of the regenerative turbine impeller.

Abstract: Methods and apparatuses for determining operational parameters of a blood pump comprising a rotor which transports the blood are provided. The change in the behaviour of at least one first and one second operational parameter, independently from each other, of the pump, is determined. A determination of the flow through the pump and/or the difference in pressure across the pump and/or the viscosity of the blood takes into account the determined change in behaviour of the at least two operational parameters. A modelling for a dynamic model of the known quantities may be carried out and an estimation method using a Kalman filter may be used.

Abstract: A fan includes an impeller including an impeller plate and a motor including a rotor with a rotor plate. A protrusion of the impeller plate protrudes downward in an axial direction from a lower surface on a lower side in the axial direction toward the rotor plate. A plate spring of the rotor plate extends in a direction intersecting the axial direction and is bendable in the axial direction. At least a portion of the protrusion is accommodated in a hole of the rotor plate. The protrusion contacts a leading end of the plate spring while being accommodated in the hole. The plate spring is bent in the axial direction while the protrusion is in contact with the leading end of the plate spring.

Abstract: An anti-blocking light sewage pump without cooling oil is described in the present application, comprises a motor housing, a motor, a funnel-shaped pump body, an anti-blocking impeller made of flexible rubber, and a filter screen. The motor and the funnel-shaped pump body are arranged in the motor housing, the anti-blocking impeller made of flexible rubber is arranged in said funnel-shaped pump body, said anti-blocking impeller made of flexible rubber is coaxially connected with the motor through an iron core. The anti-blocking light sewage pump without cooling oil comprises an inverted conical impeller which is not easy to block and a conical funnel-shaped pump body which is easy to expel the granular blockage, which can effectively reduce the problem of pump blocking, avoid the occurrence of the burnout of the motor, and prolong the service life of the pump.

Abstract: A pump device for delivering fluid to be pumped includes at least one drive unit with a drive and at least one receiving region on which at least two pump cartridges can be positioned so as to be hydraulically connected in series.

Abstract: A pump apparatus is provided with a tank in which a handled-fluid having insulating properties is stored, and with a pump that is mounted in the tank. The pump has an impeller in which a magnet is embedded, a motor stator that is disposed at a position opposing the magnet, a pump casing that houses the impeller, and a motor casing that houses the motor stator. The motor casing is open such that a winding of the motor stator is immersed in the handled-fluid.

Abstract: An impeller pump has a pump chamber with an inlet and an outlet, and an impeller in the pump chamber. An auxiliary outlet out of the pump chamber together with an auxiliary outlet flap is provided, the auxiliary outlet flap having a closed position and at least one open position and being rotatable or movable between the positions. In the closed position, the auxiliary outlet flap closes off the auxiliary outlet and, in each of the open positions, the auxiliary outlet flap at least partially opens the auxiliary outlet. The auxiliary outlet flap has an actuator and is subjected to force loading by the actuator, such that the auxiliary outlet flap is moved automatically from the closed position into one of the open positions if the auxiliary outlet flap is free from fluid flow in a direction of rotation of the impeller.

Abstract: A fan blade with improved structure includes a hub, a plurality of blades. The hub has a lateral side having two ends, one of which is formed a top side and the other end is extended to form an extended section, and a plurality of connecting slots located on the periphery of the extended section. Each blade has a first end correspondingly engaged in respective connecting slot and a second end. With these arrangements, the fan blade with improved structure can increase structural strength of thin fan blades and be easy to connect the hub to the blades.

Abstract: A turbomolecular pump has a housing, a rotor shaft supported by a plurality of bearings for rotation relative to the housing about an axis of rotation, a deflector, a lubricant supply system and a lubricant transfer device provided on the rotor shaft. The bearings include a rolling bearing that receives lubricant from the lubricant supply system to via the lubricant transfer device. The rolling bearing is disposed intermediate the lubricant transfer device and the deflector and the deflector is configured to deflect lubricant that passes through the rolling bearing outwardly with respect to the rotor shaft.

Abstract: A fan is disclosed.

Abstract: There is disclosed a pump apparatus which can more accurately determine the occurrence of an abnormal vibration. The pump apparatus includes: a pump; an electric motor for driving the pump; an inverter as a speed changing means for the electric motor; a vibration detector for detecting at least one of a vibration of the pump, a vibration of the electric motor and a vibration of the inverter; and a controller for controlling the pump. The controller includes a storage unit for storing a measured vibration value measured by the vibration detector. The storage unit has a storage table which, when the rotational speed of the pump is increased stepwise to a predetermined rotational speed, stores the measured vibration value measured at each step.

Abstract: A compressor includes a shaft, a motor configured to drive the shaft into rotation, and a thrust bearing configured to permit rotation of the shaft and support an axial load of the shaft. The thrust bearing is positioned about the shaft and between the motor and an impeller of the compressor.

Abstract: A thrust bearing, particularly for a turbocharger, having unique configurations on the thrust pad faces, including free-form curvatures or non-linear configurations defined by a geometric equation. The thrust pad faces can be configured by a programmed linear actuator system and cutting tool.

Abstract: A pump comprising a housing defining an internal volume; an impeller disposed in the internal volume of the housing, wherein the impeller comprises a magnetic element and at least a portion of the surface of the impeller conforms to a generally logarithmic spiral; and a drive element adapted to magnetically couple with the magnetic element of the impeller.

Abstract: A fan assembly includes a fan and a fan drive. The fan includes a fan hub located at a fan central axis, and a plurality of fan blades extending outwardly from the fan hub. The fan hub has a fan hub opening at the fan central axis. The fan hub opening is at least partially defined by a plurality of nodes extending radially inwardly toward the fan central axis from the fan hub. The fan drive is installed in the fan hub opening via an interference fit between the plurality of nodes and an outer surface of the fan drive, thus centering the fan drive in the fan hub opening.

Abstract: A method of forming a heat exchanger, for example a heat exchanger used in an aircraft, the method comprising extruding a metal body with at least one fluid passage in the metal body, forming a set of fins that are attached to the metal body and forming a set of heat transfer augmentation structures on the metal body.

Abstract: The example embodiments are directed to a heat dissipation system for an electric aircraft engine. In an example, the aircraft engine includes an electric system configured to power an engine fan to provide thrust to an aircraft, the electric system including cooling channels to receive a coolant to cool one or more components of the electric system, a power source to power the electric system, and one or more guide vanes connected to the cooling channels of the electric system and configured to receive the coolant heated by and output from the cooling channels, wherein the one or more guide vanes are further to cool the heated coolant and transfer the cooled coolant back to the cooling channels of the electric system. By dissipating heat from electric system via the guide vanes, the cooling system can provide sufficient cooling without adding additional drag to the aircraft.

Abstract: Disclosed is a pump system comprising a pump and a sensor. The pump comprises a pump casing defining a pump chamber, an inlet for receipt of flowable material into the chamber, an outlet for discharge of flowable material from the chamber, and an impeller disposed within the pump chamber to accelerate flowable material within the pump chamber. The pump also comprises a transition region extending between an inner peripheral surface of the pump chamber and an inner peripheral surface of the outlet, the transition region configured in use to divert flowable material accelerated by the impeller to the outlet. The vibration sensor is mounted to the pump casing and arranged in use to detect vibration of the transition region.

Abstract: A technique for controlling a rotating stall in a compressor of a gas turbine engine. In the technique a flow injection is introduced into an axial air flow path of the compressor via a flow-injection opening located at a pressure side of a guide vane in the compressor and directed towards a leading edge of a compressor rotor blade located adjacently downstream of the guide vane. The flow injection is introduced when the rotating stall is detected and/or when the compressor is being operated at a speed lower than full load speed. The flow injection reduces an angle of incidence of compressor air on the leading edge of the downstream rotor blade and hence the rotor sees a more favorable velocity. The favorable velocity results into an increase in the operating range of the rotor and hence of the compressor by mitigating and/or reducing the rotating stalls.

Abstract: The present invention relates to a vacuum pump using a profile. The vacuum pump according to the present invention comprises: a hollow profile having a longitudinal mounting hole and a vacuum chamber formed adjacent to each other; an ejector pump arranged inside the mounting hole in the longitudinal direction; and end caps provided in both openings of the profile, respectively, so as to have a through-hole formed therein so as to correspond to the inflow opening or the discharge opening. Particularly, the first cap near the inflow opening is designed to have a passage through which the vacuum chamber and the mounting hole communicate with each other. The vacuum pump structure according to the present invention is considered to be a vacuum pump structure using at least a so-called “profile” best designed to make fabrication of the vacuum pump convenient and to improve vacuum characteristics.

Abstract: An accumulator for storing fluid that includes a shell that defines an interior volume of the accumulator. The shell includes at least one port for providing fluid to a fluid system. The accumulator also includes an accumulator shaft disposed in the interior volume and extending at least partially across the interior volume from a first interior surface of the shell along a longitudinal axis of the shell, e.g., a central axis. The accumulator includes a piston-plate disposed in the interior volume such that the piston-plate and a second interior surface of the shell define a chamber in the interior volume. The accumulator further includes a motor disposed in the interior volume. The accumulator is configured such that rotational movement of the motor translates to linear movement of the piston-plate along the accumulator shaft.

Abstract: A hydraulic actuator capable of firmly preventing malfunction caused by dropping off of a tube and a sleeve from a sealing member in a case in which high pressure is applied such as a case in which oil pressure driving is adopted. The hydraulic actuator has a sealing mechanism. The sealing mechanism has a sealing member into which an actuator main portion is inserted, a crimping ring that binds the actuator main portion, and a locking ring that locks a sleeve to the sealing member. The sealing member has a body portion, a head portion, and a flange portion arranged between the body portion and the head portion. The flange portion is protruded outward in a radial direction of the actuator main portion more than the body portion.

Abstract: A fluid actuator arrangement comprises a piston rod member, at least two cylinders each said cylinder having a piston body, and a clamping mechanism associated to each cylinder. Each clamping mechanism is arranged to engage and disengage the piston body of the cylinder to the piston rod member. The fluid actuator arrangement comprises further a control element arranged to control a back and forward movement of the respective piston body so that forward movement is slower than the backward movement and to control the movement of the respective piston bodies in relation to each other such that at least one piston body is always moving forward and such that an overlap exists wherein at least two of the piston bodies are moving forward simultaneously during a cycle.

Abstract: A hydraulic lock for an actuator having a movable shaft includes a lock cylinder having a first end and a second end. A slot is defined through a perimeter of the lock cylinder adjacent to the second end, and a bore is defined through a portion of the lock cylinder at the second end to extend towards the first end. The hydraulic lock includes at least one pawl having a first pawl end and a second pawl end. The first pawl end is releasably coupled to a groove defined in the shaft, and the second pawl end is coupled to the slot. The pawl is movable relative to the slot between a first, locked position in which the first pawl end is coupled to the groove to inhibit movement of the shaft, and a second, unlocked position in which the first pawl end is released from the groove.

Abstract: A system for moving a hydraulic actuator that uses the new type of hydraulic no-back device. In some examples, the system comprises: a hydraulic power module for pumping hydraulic fluid through the system to the actuator, a reservoir for receiving said fluid back from said system and said actuator, first and second check valves; a conduit or conduits for fluidly connecting said power module to said check valves and said reservoir; and wherein said conduit or conduits are connected so as to allow said hydraulic fluid to flow from the hydraulic power module to said first check valve, and from said first check valve into said hydraulic actuator, and from said hydraulic actuator to said second check valve and from said second check valve to said reservoir.

Abstract: A reduced-noise pneumatic motor has a housing with a cap disposed at a first end, the cap having an air inlet; a base disposed at a second end, the base having an air outlet hole formed therein and configured to at least partially receive a noise damping system, and a piston pump extending therethrough; and bolts extending from the cap to the base to secure the cap and the base to the housing. A pneumatic piston is disposed within the housing, and includes a shuttle valve situated within a central bore of the pneumatic piston. A piston rod has a first end extending into the piston pump and a second end secured to a spring which biases the piston rod against the pneumatic piston.

Abstract: A self-cleaning mechanism for a pneumatic central clutch release includes: a release piston which is coaxially arranged around a hollow shaft and is mounted such that it moves in the direction of an axis of the hollow shaft; and a housing which at least partially surrounds the release piston so as to form a pressure chamber between the hollow shaft, the housing and the release piston, which is sealed from the environment and can be connected to a fluid pressure source; and a cleaning chamber fluidically arranged between the pressure chamber and the environment. The cleaning chamber is able to be connected to the environment by way of a ventilation channel.

Abstract: A system for recovering energy from a hydraulic actuator and to a method of operating the system are described. The system may have a hydraulic actuator and a source of hydraulic pressure, comprising a hydraulic pump, in fluid communication with the hydraulic actuator for pressurizing the hydraulic actuator. The system may also have a hydraulic accumulator assembly for selectively absorbing energy from the hydraulic actuator or via the hydraulic actuator. The system may also have a first one-way valve configured to provide fluid communication between the hydraulic actuator and the hydraulic accumulator assembly. The first one-way valve may be configured to permit a flow of fluid through the first one-way valve from the hydraulic actuator to the hydraulic accumulator assembly. The first one-way valve may also be configured to block a flow of fluid through the first one-way valve from the hydraulic accumulator assembly to the hydraulic actuator.

Abstract: Body provided with a superficial area adapted to reduce drag when the body is moving relative to a gaseous or watery medium, comprising depressions in said superficial area, wherein the depressions have a greater length than width and are provided in the superficial area so as to collectively shape a curvature provided in a length direction of said depressions in the superficial area, and/or said depressions themselves are provided with a curvature in their length direction. The depressions are thus adapted to provide that a turbulent boundary layer of the gaseous or watery medium adjacent to the superficial area of the body is exposed to lateral excitation with reference to a movement direction of the body in the gaseous or watery medium or with reference to a flow direction of said turbulent boundary layer along said superficial area of the body. Said lateral excitation results in a reduction of drag.

Abstract: A system for creating water vortices in water pipes that includes housing that contain an eight-shaped copper pipe, which has an inlet opening and an outlet opening with connectors that are designed to connect the eight-shaped copper pipe to the water pipe. The eight-shaped copper pipe includes three or more crushed areas for spinning and whirling the water. The system may include a gold element, a silver element, copper foils, crystals, religious elements, words from the Kabala, and tubes filled with water from three specific special sources.

Abstract: A fastening structure includes an operating engaging element and a body portion. The operating engaging element has an engaging portion and an operating portion. The operating portion has a moving surface abutting against a corresponding moving surface of the operating engaging element to cause movement of the operating engaging element. The body portion has a mounting portion which the operating engaging element is mounted on; or the operating engaging element has a mounting portion which the body portion is mounted. With the engaging portion, the operating engaging element is fastened to an object, and the body portion is fastened to another object, thereby fastening the two objects together. Unfastening the two objects entails pressing the operating portion such that the moving surface of the operating portion abuts against the corresponding moving surface of the operating engaging element to cause movement of the operating engaging element, thereby separating the objects.

Abstract: A transceiver module is provided. The transceiver module includes a housing, a latch and a torsion spring. The housing includes a positioning post and a block. The latch includes a wedging protrusion. The torsion spring includes a coil portion, a first extending portion and a second extending portion, wherein the first extending portion and the second extending portion are connected to the coil portion, the first extending portion includes a first free end, the second extending portion includes a second free end, and the first extending portion intersects the second extending portion at an intersection point on a projection plane. A first area, a second area, a third area and a fourth area are defined by the torsion spring clockwise around the intersection point, the coil portion surrounds the positioning post in the first area, and the first free end is adapted to connect the latch.

Abstract: A composite panel assembly including a first panel with a first skin, a second skin, a core, and an assembly flange. A second panel includes a first skin, a second skin, a core, and an assembly flange. A fastening device is adapted to fasten the assembly flange of the first panel to the assembly flange of the second panel, wherein the core of one of the first panel or the second panel includes reinforcing pins and a high-density portion placed along the assembly flange.

Abstract: A tolerance compensating element for a device for connecting components by a connecting screw, includes an inner and an outer threaded part (10, 12), which are in threaded engagement with one another and, together, form a length-adjustable spacer (14), and a sleeve (30) which is held in the inner threaded part (10) and holds a spring element (34) in a position in which it comes into frictional contact with the circumference of the inserted connecting screw, and an unscrew protection device (44) in the form of a ring that is rotatably supported at one end of the spacer (14) and includes at least one arm (48) which projects axially into the sleeve (30) and, at the free end, forms an outwardly cranked claw (50) against which a stop (54) formed on the sleeve (30) abuts when a maximum unscrewing distance of the inner threaded part (10) is reached.

Abstract: A connection tube for a power tool, adapted to be engaged with and disposed inside a sleeve tube of the power tool is disclosed. The connection tube is characterized in that: at least one first section and at least one second section are formed on an exterior surface of the connection tube; the at least one section is a curved surface located at a periphery of a first imaginary circle which could be joined to an interior surface of the sleeve tube when the connection tube is engaged with the sleeve tube, and the at least one second section is a convex-concave structure having a plurality of first hill portions and a plurality of first valley portions which are alternatively arranged, wherein crests of the first hills do not exceed the periphery of the first imaginary circle.

Abstract: A method of joining first and second vehicle components to make an assembly includes applying structural adhesive and mastic to the first component. The first and second component may be made of different metals, and are brought together and joined at an interface using a linkage. Thereafter, the structural adhesive and mastic are cured. The mastic seals an interior edge of the interface, which is located at an interior of the assembly. A dust sealer is applied and cured to seal the exterior edge of the interface, which is located at an exterior of the assembly. The method results in sealing of all the edges around the entire perimeter of the interface, thus inhibiting water intrusion into the interface and possible corrosion resulting therefrom.

Abstract: A joint for furniture includes furniture piece that has a first hole that extends through a surface of the furniture piece and out the furniture piece, and that has a second hole with an opening in the furniture piece. A leg is fitted to the furniture piece. The leg has a hole. A curved tenon piece includes a head. The curved tenon piece is curved sufficiently to allow the curved tenon to enter the first hole through the surface of the furniture piece, to exit the first hole, to extend through the hole in the leg and to enter into the second hole so that the head leg is held snugly to the furniture piece by the curved tenon piece.

Abstract: The present invention relates to a screw, in particular a plug screw, having a screw shank (1), a screw head (2) and a tapering screw tip (4), and having a screw thread (6) that extends at least over a portion of the screw shank (1) and over the screw tip (4), the flight (6a) of said screw thread (6) having a triangular cross section as seen in longitudinal section, with two thread flanks (8, 9) that intersect at a flank tip (7). The flank tip (7) is rounded, wherein a radius of the rounding of the rounded flank tip (7) is selected to be from 1% to 10% of the nominal diameter of the screw. The thread flanks (8, 9) are each formed from two flank portions which enclose an obtuse angle with one another.

Abstract: An attachment for monitoring a nut of a screw connection for crack formation, deformation, and/or breakage includes a socket portion which is attached to the outer circumference of the nut and has a conductor which is interrupted in the case of a deformation, crack, or breakage of the nut. The conductor is embedded in at least one material. The attachment is produced by injection molding with the conductor embedded within the socket portion. The monitoring attachment is particularly useful for operating a shutoff device for a wind generator in the event of failure of a nut which secures a turbine blade to the generator hub.

Abstract: A fastener including a bolt having an elongated shank having a first end, a second end opposite the first end, and a threaded portion having an external bolt thread, the bolt thread including a bolt pitch. The fastener includes a nut having a first end, a second end opposite the first end of the nut, and an internal nut thread extending between the first and second ends of the nut and adapted to engage threadedly the bolt thread of the bolt. The nut thread includes a nut pitch and a hardness that changes gradationally between the first and second ends of the nut. The bolt pitch of the bolt thread of the bolt is mismatched with the nut pitch of the nut thread of the nut.

Abstract: A suction cup attachment method for flexible materials with a flexible cup member, a stem member, a flexible flange member. The cup member forms a standard suction cup. The stem member is integrally and centrally attached on one end to the underside of the flexible cup member. The stem member is integrally and centrally attached at the opposite end to the flexible flange member. The flexible flange member includes a plurality of apertures for allowing adhesive material to flow through the flexible flange member to mate a first flexible panel member to a second flexible panel member. An alternate embodiment includes the stem member being threaded and having no flange member.

Abstract: Adjustable-length connecting rod for an aircraft turbomachine, connecting rod having a generally elongate shape and having first and second longitudinal opposite ends for attachment to elements to be connected. The first longitudinal end is connected to a first threaded shaft screwed into a first tubular portion of an adjustment sleeve. The second longitudinal end is connected to a second threaded shaft screwed into a second tubular portion of the adjustment sleeve. The connecting rod further includes a housing in which at least a portion of the first shaft is configured to slide.