156results about How to "Increased torque transfer capability" patented technology

An improved catheter system having an ultrasonic imaging transducer coupled to a drive cable disposed within a lumen of a flexible tubular catheter body. An improvement including a reconfiguration of the ferrites in the hub assembly, such that the need for the gap between the ferrites is removed. A strain relief member is provide to increase the strength of the electrical transmission lines to enable them to withstand the tensile forces caused by either flushing and / or pull-back operations. A device which allows the electrical transmission lines to extend their length when placed in tension may also be employed to provide strain relief to the electrical transmission lines. Another improvement includes a counter-wound coil structure, which may either expand or contract as the drive cable is being rotated to strengthen the drive cable. The distal tip of the catheter body may be redesigned to provide a lumen which allows for the release of flushing fluids through a distal port in the guidewire lumen.

An engine staring control apparatus of a hybrid drive system is arranged to increase the torque transmission capacity such that a cranking torque of an engine is compensated when the engine is started; to stop the increase of the torque transmission capacity when a revolution speed of an engine-side friction element of an engine clutch reaches a revolution speed at which the engine can start by itself; to hold a torque transmission capacity of the engine clutch after the stopping of the increase of the torque transmission capacity; and to stop the holding of the torque transmission capacity and to again increase the torque transmission capacity when the revolution speed of the engine-side friction element reaches the revolution speed of a transmission-side friction element.

In a vehicle driving apparatus including a rotating electrical machine having a rotor and a case housing a power transmission device, a second projecting portion formed on a front cover member of the power transmission device is supported rotatably relative to a first projecting portion formed on a support wall of the case via a support bearing, a positioning fitting portion is provided to position a rotor support member for supporting the rotor relative to the front cover member in the radial direction, a torque transmitting coupling portion is provided on a radial direction outer side of the positioning fitting portion to couple the rotor support member and the front cover member so as to be capable of transmitting torque, and the positioning fitting portion and the torque transmitting coupling portion are respectively disposed to overlap a rotary support portion in an axial direction.

A turbocharger has a shaft formed of a strong material such as steel and an impeller formed of a relatively weaker material such as aluminum alloy. The impeller is mounted on the shaft by means of an internally-threaded insert, for example also of steel, interference fitted into the impeller hub. To prevent loss of the interference fit between the insert and impeller during thermal and speed excursions of the impeller during operation of the turbocharger, a constraining ring is fitted to the hub of the impeller. The ring is of a material having a lower coefficient of thermal expansion than the material of the impeller and surrounds at least a part of that axial length of the impeller which overlies the insert.

A connecting device for connecting first and second shafts in a rotationally fixed manner. The connecting device has a connecting element with form-locking elements that axially moves between a first axial position, to form lock the shaft via the form-locking elements, and a second axial position, to release the form lock. An actuator, when electrically energized, causes movement of the connecting element between the first and the second position. The locking elements are disposed in axially spaced first rows such that, in the first position, these rows engage with corresponding second rows of locking elements of the first shaft to achieve a form lock and couple the first and second shafts, and, in the second position, the first rows disengage from the corresponding second rows of form-locking elements of the first shaft to respectively release the first and second shafts and permit relative rotation therebetween.

A hydrodynamic coupling device includes an impeller wheel with an impeller shell and a vane arrangement and a turbine wheel with a turbine shell and vane arrangement. The vane arrangements of the impeller wheel and the turbine wheel form a hydrodynamic circuit. A lockup clutch is constructed with an axially movable piston for transmitting torque by the application of pressure in the direction of a primary flange of a clutch housing via at least one friction facing provided axially between the piston and the primary flange. The lockup clutch has a torsional vibration damper with a drive-side transmission element and a driven-side transmission element which is movable relative to the latter, each of which is provided with driving means for elastic elements. The torsional vibration damper has a damping device that penetrates axially, at least along part of its axial extension, into an annular space that is enclosed by the turbine wheel and at least partially enclosed by the impeller wheel such that the damping device is arranged radially inside of the hydrodynamic circuit. The annular space is formed by an axial bulge of a radial lengthening of the turbine shell. The radial lengthening projects radially inward up to the turbine hub. The axial bulge approaches the side of the clutch housing remote of a drive up to the width of a gap, and this gap has a width which is sufficient to ensure that the turbine wheel can move relative to the clutch housing without contact.

A rotational difference is generated between a first and a second rotor and a third rotor, which causes an induced current to flow in a first rotor winding. This causes a torque to act between the first rotor and the third rotor. The rotary magnetic field generated by the induced current flowing through a second rotor winding interacts with a second stator, which in turn generates an induced electromotive force in a second stator winding. The induced electromotive force is applied via a phase adjustment circuit to a first stator winding, which generates a rotary magnetic field and causes a torque to act between the first stator and the third rotor. The rotary magnetic field generated by the second rotor winding and the induced current flowing in the second stator winding causes a torque to act between the second stator and the second rotor.

A recess-projection fitting structure includes projections extending in an axial direction on an outer diameter surface of a shaft section of an outer joint member or an inner diameter surface of a hole of a hub wheel, press-fitting the projections in another of the outer diameter surface and the inner diameter surface along the axial direction, and forming recesses brought into contact and fitted with the projections by press fitting in the other of the outer diameter surface and the inner diameter surface, the projections and the recesses being held in contact with each other through intermediation. An outer member is fitted in a hole of a knuckle of a vehicle. Annular grooves are formed respectively in an outer peripheral surface of the outer member and an inner peripheral surface of the hole of the knuckle, and a snap ring is engaged with both the annular grooves.

The invention discloses a catheter, which has a structure that a catheter body 11 includes a hollow coil 24 whose outer and inner surfaces are coated with outer and inner resin layers 28 and 26. A resin tip 12 is provided at a distal end 48 of the catheter body. The tip 12 has a tapered section 46 at a distal end of the tip. Also, an axially extending braid is embedded in the catheter body 11 andthe tip 12 to extend from the catheter body 11 to the tip 12 in the axial direction. The inventive catheter has plasticity, can reduce the stress concentration of the boundary part between the catheter body and the tip, and can exert higher torque transmissibility at the boundary part.

A clutch arrangement, especially for a motor vehicle, comprising a housing arrangement (12) which is filled or which can be filled with fluid, at least one first friction element (22) which can be jointly rotated with the housing arrangement (12) and at least one second friction organ (24) which can be jointly rotated with an output element (18) and which can be brought to rest against the at least one first friction element (22) in order to produce at least one interactive friction effect. At least one friction element (22, 24) is embodied in such a way that fluid can circulate around at least certain areas of the friction elements (22, 24).

The invention discloses a high torque density magnetic field modulation type magnetic gear, which comprises a permanent magnetic outer stator, a modulation rotor and a permanent magnetic inner rotor which are concentrically nested to one another and arranged sequentially from outside to inside; air gaps are formed between the permanent magnetic outer stator and the modulation rotor as well as between the modulation rotor and the permanent magnetic inner rotor respectively; a trapezoidal groove is formed in the inner surface of an outer stator iron core of the permanent magnetic outer stator; demagnetization inhibition grooves are formed in the two sides of the inner end of the trapezoidal groove respectively; a tangentially polarized inverted trapezoidal outer stator permanent magnet is embedded in the trapezoidal groove; the demagnetization inhibition grooves have the action of inhibiting local demagnetization of the outer stator permanent magnet; the modulation rotor is composed of a plurality of magnet regulating yokes and a plurality of non-magnetic conductive materials embedded with punched holes respectively; the non-magnetic conductive materials embedded with the punched holes are embedded between two adjacent magnet regulating yokes respectively; the permanent magnetic inner rotor is composed of inner rotor permanent magnets and an inner rotor iron core which are concentrically nested to one another sequentially from outside to inside; and the inner rotor permanent magnets have a simplified Halbach structure. According to the magnetic field modulation type magnetic gear provided by the invention, higher torque density is realized under low torque ripples.

The invention discloses an outer rotor magnetic flux collecting magnetic gear. The magnetic gear has an axial structure, and the section of the magnetic gear comprises a magnetic gear outer rotor, a magnetic flux adjusting ring and a magnetic gear inner rotor from outside to inside in sequence; the magnetic gear outer rotor, the magnetic flux adjusting ring and the magnetic gear inner rotor are coaxial and are independent of one another; an outer air gap (3) is formed between the magnetic gear outer rotor and the magnetic flux adjusting ring; an inner air gap (6) is formed between the magnetic flux adjusting ring and the magnetic gear inner rotor; the magnetic gear outer rotor and the magnetic gear inner rotor freely rotate and are connected with a driving or driven component to perform torque transfer respectively; and the middle magnetic flux adjusting ring is in a stationary state and is fixed at the two axial ends. Through the outer rotor magnetic flux collecting magnetic gear, the torque transfer capacity of the magnetic gear can be improved.

A control system for hybrid vehicle for extending a possible travelling distance of the vehicle in the event of clutch failure is provided. The control system is configured to select a first drive mode in which the vehicle is powered by an engine in case an estimated torque transmitting capacity of the clutch in trouble is larger than a first threshold value, and to select a second drive mode in which the vehicle is powered by a motor in case the estimated torque transmitting capacity of the clutch in trouble is smaller than the first threshold value. The control system is further configured to reduce an engine torque to be smaller than the estimated torque transmitting capacity of the clutch in case the first drive mode is selected.

The invention discloses a reinforced compound sheathing canal, a preparation method and application thereof. The reinforced compound sheathing canal sequentially comprises an inner layer, a reinforced layer and an outer layer from interior to exterior, wherein the reinforced layer comprises axial reinforcing elements and a spiral reinforcing element, the spiral reinforcing element is a single spiral element or is formed by combining two or more spiral elements, the axial reinforcing elements are disposed on the inner side or outer side of the spiral element, or are inserted between the spiral elements, and various axial reinforcing elements are uniformly arranged in the circumference direction of the sheathing canal. The reinforced compound sheathing canal provided by the invention has the advantages of thin wall, high axial strength, high radial strength, high torque transitivity and the like, can be applied to a transport system for transporting medical device implants needed in a minimally invasive treatment and can reduce the outer diameter of the transport system, so that the medical device implants are easy to arrive at lesion positions, damage to the blood vessel of a patient is reduced, and sufficient technical support is provided for reliable, successful and safe transport and implantation of the medical device implants by the transport system.

A multi-lobed gear system is provided in which the lobes of an input gear and a corresponding, mating pair of lobes in an output gear are uniformly in contact. The lobed gear tooth profile of the present invention reduces material galling, shuttering and whipping within a drivetrain assembly in comparison to square or helical splines that incorporate single point contacts between meshed pairs. An internal pinion gear or slip yoke internal shaft employs a lobed gear tooth profile that forms a sinusoidal outer perimeter shape. The perimeter surface is in constant contact with the complementary shaft or gear across its entire surface. A small clearance gap may be provided for lubrication, fitment and manufacturing considerations.

Provided is a belt-drive continuously variable transmission which comprises a pair of drive pulley and driven pulley, and a belt engaged with the pulleys. The belt includes an endless carrier and a plurality of transverse elements closely arranged on the carrier. Each transverse element has an edge and rotatable about the edge in the longitudinal direction of the belt and converging side faces for contact with contact surfaces of the pulleys. Each of the side faces is curved toward each of the contact surfaces in such a manner as to have, when each of the transverse elements is observed in a plan view, such a circular arc that is of a predetermined radius R and has a center located on a straight line perpendicular to each of the contact surfaces and extending through a point at which the edge and each of the contact surfaces meet.

The invention provides a guidewire, which can make sure bonding strength between a coil and a core shaft containing tungsten having bad wettability with brazing metal, and can enhance torque transmission performance. The guidewire (1) includes a core shaft (2) and a coil body (3) that covers the core shaft (2). The guidewire also includes a tip portion, an intermediate fixing portion, and a proximal-end fixing portion that fix the core shaft (2) and the coil body (3) to each other. The coil body (3) includes a single core wire formed of a tungsten wire and a single side wire formed of a stainless steel wire. The side wire is wound around the core wire so as to cover the outer periphery of the core wire.

The invention discloses a rotor salient pole type hybrid excitation motor based on a magnetic gear. The rotor salient pole type hybrid excitation motor based on the magnetic gear comprises an outer rotor, a permanent magnet, a stator, an armature winding, a supporting shaft and a bearing, wherein an inner ring of the outer rotor is provided with outer rotor salient poles which are arrayed at equal intervals and is connected with the supporting shaft of the motor through the bearing in a rotating mode; the stator is fixedly arranged through the supporting shaft of the motor; the permanent magnet is attached to the surface of a stator tooth of the stator and is opposite to the outer rotor; air gaps are formed between the outer rotor salient poles and the permanent magnet; the armature windings are wound around the stator tooth of the stator and are charged with alternating current. The salient pole type rotor is not provided with a permanent magnet, and a motor magnetic field is generated through the permanent magnet attached to the surface of the stator tooth and the excitation winding wound around the stator tooth, so that reliability of the motor is improved, the defect that a magnetic field of a traditional permanent magnet motor can not be adjusted is overcome, and the rotor salient pole type hybrid excitation motor based on the magnetic gear has the advantages of low-speed magnetism increasing and high-speed magnetism field weakening of a hybrid excitation type motor.

An improved catheter system having an ultrasonic imaging transducer coupled to a drive cable disposed within a lumen of a flexible tubular catheter body. An improvement including a reconfiguration of the ferrites in the hub assembly, such that the need for the gap between the ferrites is removed. A strain relief member is provide to increase the strength of the electrical transmission lines to enable them to withstand the tensile forces caused by either flushing and / or pull-back operations. A device which allows the electrical transmission lines to extend their length when placed in tension may also be employed to provide strain relief to the electrical transmission lines. Another improvement includes a counter-wound coil structure, which may either expand or contract as the drive cable is being rotated to strengthen the drive cable. The distal tip of the catheter body may be redesigned to provide a lumen which allows for the release of flushing fluids through a distal port in the guidewire lumen.

A die and method of assembling a high torque capacity metal spool. The spool comprises a cylindrical barrel, a pair of flanges and a pair of flange hubs. The die includes a support member and a curling member that is adapted to move relative to the support housing. The die is adapted to be driven towards a matching die to press a spool therebetween. Each curling member includes an annular curling face which is adapted to curl and compress metal edges of the cylindrical barrel, the flanges and the flange hubs into tightened curls. The tightened curls secure the cylindrical barrel with the flanges and flange hubs. Each die further includes a plurality of nibs carried by the support housings which project outward from the curling face of the curling member after the tightened curls have been formed to swage a plurality of detents into the tightened curls of the spool. The resulting detents in the metal spool provide for increased torque transfer between the flanges, the flange hubs and the cylindrical barrel. The ability to transfer torque increases the applicability of the spool to wire winding and pulling functions. Flattening paste also covers a metal surface in the curl to increase the coefficient of friction therein and increase the torque transmissibility capacity.

In a vehicle driving apparatus including a rotating electrical machine having a rotor and a case housing a power transmission device, a second projecting portion formed on a front cover member of the power transmission device is supported rotatably relative to a first projecting portion formed on a support wall of the case via a support bearing, a positioning fitting portion is provided to position a rotor support member for supporting the rotor relative to the front cover member in the radial direction, a torque transmitting coupling portion is provided on a radial direction outer side of the positioning fitting portion to couple the rotor support member and the front cover member so as to be capable of transmitting torque, and the positioning fitting portion and the torque transmitting coupling portion are respectively disposed to overlap a rotary support portion in an axial direction.

Provided are a bearing device for a wheel, in which circumferential play is reduced, which provides excellent workability in connection between a hub ring and an outer joint member of a constant velocity universal joint, in which fitting between the hub ring and the outer joint member of the constant velocity universal joint is stable, and which has excellent strength, and an axle module using the bearing device. An axially extending projection is formed on either of the outer diameter surface of a shaft section of the outer joint member and the inner diameter surface of a hole of the hub ring. The projection is press-fitted to the other in the axial direction to form a recess in the other by the press-fitting. By this, a recess / projection fit structure is formed, in which the entire regions of those portions of the projection and the recess at which they are fitted to each other are in intimate contact with each other. The hardness of at least that portion of the projection at which the press-fit starts is higher than that of a portion where the recess is formed. The difference in hardness in HRC is 20 or more.

The invention discloses a stepless speed change mechanism and an automobile. The stepless speed change mechanism comprises a driving wheel disc and a pressure adjusting wheel disc which are parallel to each other; at least one speed change roller is arranged between the driving wheel disc and the pressure adjusting wheel disc; the axis of the speed change roller is parallel to the driving wheel disc and points to the axis of the driving wheel disc; contact surfaces of the driving wheel disc, the pressure adjusting wheel disc and the speed change roller are provided with friction layers; the speed change roller is provided with a position adjusting device which can adjust a distance from the center of the speed change roller to the center of the driving wheel disc; and the pressure adjusting wheel disc is provided with a pressure adjusting device to adjust the pressure applied to the speed change roller by the pressure adjusting wheel disc. The stepless speed change mechanism can realize stepless speed change and improve the torque transmitting capacity.

A hydraulic transmission apparatus including a pump impeller connected to an input member that is coupled to a motor; a turbine runner for rotating with the pump impeller; a damper mechanism having an input element coupled to the turbine runner, an elastic body engaging with the input element, and an output element engaging with the elastic body and coupled to an transmission device input shaft; a lockup clutch for performing lockup in which the input member is engaged with the input element of the damper mechanism, and for releasing lockup; and an engagement mechanism engaging the turbine runner with the output element of the damper mechanism so that the turbine runner and the output element of the damper mechanism rotate integrally, when the lockup is released by the lockup clutch, and that does not engage the turbine runner with the output element of the damper mechanism so that the turbine runner and the output element of the damper mechanism do not rotate integrally, when the lockup is performed by the lockup clutch.

An automatic transmission in the form of a belt-driven conical-pulley transmission having conical disk pairs on the power input and output sides and an endless torque-transmitting means for transmitting torque. The running surfaces of the conical disk pairs that contact the endless torque-transmitting means have a directed structure.

A method and a system for calibrating an estimated clutch characteristic curve of a dual-clutch vehicle transmission are provided. The method includesmechanically interconnecting a first input shaft with a second input shaft, whereby a transmission output shaft is disengaged;controlling,according to a first alternative, a regulating parameter of a first clutch regulator such that a first friction clutch is engaged with a first torque transmission capability, that a second friction clutch (initially is disengaged, and subsequently engaged; oraccording to a second alternative, that the second friction clutch is initially engaged, a regulating parameter of the first clutch regulator such that the first friction clutch is engaged with a first torque transmission capability, and that the second friction clutch subsequently disengaged;calculating a torque transmission capability of the second friction clutch; and adjusting an estimated clutch characteristic curve of the second friction clutch.