1669 results about "Torque transmission" patented technology

Articulating mechanisms, link systems, and components thereof, useful for a variety of purposes including, but not limited to, the remote manipulation of instruments such as surgical or diagnostic instruments or tools, are provided. The link systems include links wherein torque can be transferred between at least two adjacent links while allowing for pivoting motion between the links. Mechanisms for preventing undesired lateral movement of links relative to one another are also provided.

An aircraft including an airframe having a fuselage which extends longitudinally, and having fixed wings including a main wing, a horizontal tail wing and a vertical tail wing. A propeller-rotor torque transmission has a bevel gear which transmits the rotation of an input shaft simultaneously to a propeller shaft and to a rotor shaft. An engine gearbox supplies the above-mentioned input shaft with rotationalal motive power. The aircraft further includes a propeller collective pitch controller, a rotor collective pitch controller, an engine power controller which controls the output of the above-mentioned engine gearbox for the purpose of changing the rotational speed of the input shaft, and a flight control system having a directional (yaw) control system which controls the flight direction of the aircraft by controlling the positions of the above-mentioned control surfaces.

A temporary cardiac-assist device is disclosed. The device includes a pump assembly that is deployed in the ascending aorta or the heart. A torque transmission line couples the pump assembly to an external motor for driving impeller blades within the pump assembly. The pump assembly expands in size at its destination site for operation. In operation, neither the torque transmission line nor elements that support the impeller blades are under axial forces.

A hybrid vehicle drive for a motor vehicle includes an internal combustion engine and an electric machine which is selectively coupled with the internal combustion engine. The electric machine can be operated as a generator and as a motor. Regulation device which responds to a reference signal predetermined by a reference signal preset device are provided for the active damping of vibrations, especially torsional vibrations in the torque transmission path between the internal combustion engine and wheels of the motor vehicle driven by the latter. The regulation device also respond to sensing device which deliver an actual-value vibration signal containing vibration information about a rotating structural component of the motor vehicle and control the load torque exerted on the internal combustion engine by the electric machine for reducing or eliminating the vibrations of the structural component. An analysis device for determining a frequency spectrum of the actual-value vibration signal is associated with the regulation device. The reference signal preset device establishes a reference signal with predetermined frequency spectrum. The regulation device control the frequency spectrum of the load torque exerted on the internal combustion engine by the electric machine such that excessive spectral vibrations of the actual-value vibration signal are reduced or eliminated.

A hybrid drive arrangement for a motor vehicle including an internal combustion engine (1), which is connected or can be connected in a wheel-driving manner, via a first torque transmission path (11, 13), to a driving wheel (15) of the motor vehicle. An electric machine (19), which is operable at least as a motor, is fed from an electrical energy source (7, 29) of the motor vehicle and is connected or can be connected in a wheel-driving manner, via a second torque transmission path (21, 23, 13), to the driving wheel (15). Arranged in the first and/or the second torque transmission path are coupling elements (11, 23) which, in a first operating state, permit the driving of the motor vehicle by the wheel-driving torque of the electric machine (19), operated as a motor, without mechanical torque support from the internal combustion engine (1), and which, in a second operating state, permit the driving of the motor vehicle by the internal combustion engine (1), without mechanical torque support from the electric machine (19). Depending on the driving speed of the motor vehicle, an electronic driving control system (31) activates the first operating state, at least in a first range of driving speeds including standstill of the vehicle, if the driving speed is less than a predetermined speed limit, and activates the second operating state, at least in a second range including the maximum speed of the vehicle, if the driving speed is greater.

A robot controller according to an embodiment of the present invention comprises a base; a first link; a first actuator which drives to rotate the first link relative to the base; a first torque transmission mechanism which transmits the torque of the first actuator to the first link at a speed reducing ratio of N₁; a first angular sensor which detects a rotating angle θ_M1 of the first actuator; a first angular velocity sensor which detects an angular velocity ω_A1 of the first link rotating relatively to the base; and a processor which calculates an angle of the first link relatively to the base by using a high frequency content of an integrated value of ω_A1 and a low frequency content of θ_M1*N₁, the high frequency content being equal to a first frequency or higher and the low frequency content being equal to a first frequency or lower.

An electric power steering system is provided which is capable of providing a favorable steering feeling without using compensation logics such as of inertia compensation and friction compensation. The electric power steering system includes road-noise suppression control means (213) for controlling a steering assist motor (9) in a manner to damp torque transmission in a higher frequency region representing road noises than a frequency region representing road information. A friction value of a steering mechanism (A) is decreased enough to allow the intrinsic vibrations of the steering mechanism (A) to appear. Rotor inertia of the steering assist motor (9) is set to a value small enough to allow the frequencies of the intrinsic vibrations to be present in the frequency region where the torque transmission is damped by the road-noise suppression control means (213).

A vehicle transmission includes a differential gearset having five coaxial gear elements and two output members. Two of the gear elements are controllable via torque-transmitting devices such as friction brakes or electric motors to establish a plurality of speed ratios between the input shaft and the two output members. The two output members are selectively operatively connectable to an output shaft via a gear arrangement that allows for a plurality of speed ratios between the output members and the output shaft. If the torque-transmitting devices are electric motors or hydraulic pumps, then a continuously variable speed ratio between the input shaft and the output shaft is achievable. The plurality of speed ratios between the two output members and the output shaft enable a plurality of compound split operating modes, facilitating smaller and less powerful motors or pumps compared to the prior art.

A bi-directional overrunning clutch is disclosed for controlling torque transmission between a secondary drive shaft and secondary driven shafts. The overrunning clutch includes a pinion input shaft in a differential housing that engages with a clutch housing rotatably disposed within the differential housing. At least one race is located adjacent to the clutch housing and is engaged with an output shaft. A cage is located between the race and the clutch housing. The cage is movable with respect to the clutch housing. A <DEL-S DATE="20030304" ID="DEL-S-00001"/>first<DEL-E ID="DEL-S-00001"/> coil is mounted within the differential housing adjacent to the cage and is adapted to produce an electromagnetic field when energized which causes the cage to drag with respect to the clutch housing. The dragging of the cage with respect to the clutch housing positions <INS-S DATE="20030304" ID="INS-S-00001"/>rolls within <INS-E ID="INS-S-00001"/>the cage to engage the clutch housing with the race when wheels on a primary drive shaft lose traction. <DEL-S DATE="20030304" ID="DEL-S-00002"/>A<DEL-E ID="DEL-S-00002"/> <INS-S DATE="20030304" ID="INS-S-00002"/>If desired a <INS-E ID="INS-S-00002"/>second coil <DEL-S DATE="20030304" ID="DEL-S-00003"/>is<DEL-E ID="DEL-S-00003"/> <INS-S DATE="20030304" ID="INS-S-00003"/>may be <INS-E ID="INS-S-00003"/>mounted within the differential housing adjacent <DEL-S DATE="20030304" ID="DEL-S-00004"/>adjacent<DEL-E ID="DEL-S-00004"/> to the cage. The second coil is adapted to produce an electromagnetic field when energized which advances cage with respect to the clutch housing causing the clutch housing to engage with the races. When the second coil is activated, the output shaft drives the pinion input shaft producing engine braking. An electronic control system is utilized to control the energizing of the coils.

The present invention provides as tarter capable of keeping a state where a pinion and a ring gear maintain meshing with each other when an engine stops without providing a plunger stopper using a solenoid or the like. The state where the pinion and the ring gear maintain meshing with each other in the engine stop mode continues by movement resistance which occurs when a torque transmission member moves. Concretely, an inclination angle of a helical spline in a helical spline engagement part is set so that the above state continues. The helical spline engagement part is a part where a helical spline on the outer periphery of an output shaft of a starter motor and a helical spline on the inner periphery of the torque transmission member mesh with each. Consequently, the above state continues without a plunger stopper using a solenoid or the like.

A coil conductor for connecting an electrode near a distal end of a medical electrical lead with an implantable medical device (IMD) connected with a proximal end of the medical electrical lead includes a multi-filar coil and a torque enhancing sheathing. The multi-filar coil comprises a co-radially wound, multi-filar coil that has an inductance of approximately 1.5 μH or greater. The sheathing is extruded over to enhance the torque transmitting properties of the coil conductor.

A closed loop shift control apparatus and method based on estimated torque in friction elements controls a torque transfer phase when shifting from a low gear configuration to a high gear configuration for an automatic transmission system. When pressure actuated friction elements are selectively engaged and released to establish torque flow paths in the transmission, estimates of torsional load exerted on the off-going friction element are used to predict the optimal off-going friction element release timing for achieving a consistent shift feel. The estimated torque is preferably calculated by using estimated torque signals generated as a function of speed measurements represented either the engine speed and turbine output speed or transmission output speed and wheel speed under dynamically changing conditions.

A screwing-tool with a device to adjust transmitted torque consists of a handle to introduce a torque to the device, which is borne in the hollow of the handle and a driver-shaft as outpout element of the torque. On the driver-shaft inside the handle two separate couplings are assembled, between them a compression spring exerting a spring force onto the two couplings. Each coupling consist of a first and second socket engaging each other by gearings at their opposing faces. The maximum torque at which the torque-transmission will be interrupted cab be adjusted in that way, that by an adjustment-element the distance between the couplings can be changed resulting in a change of the tension of the spring exerting a load on the couplings. The teeth of the gearings slide and the sockets rotate relatively to each other and interrupt the torque-transmission if a pre-adjusted torque is exceeded.

A transmission is provided having an input member, an output member, a dual clutch assembly, two countershaft gearing arrangements, one planetary gear set, a plurality of interconnecting members, and a plurality of torque transmitting devices. Each of the countershaft gearing arrangements includes a plurality of co-planar gear sets. The torque transmitting devices include a combination of clutches, brakes, and synchronizers.

The present invention relates to methodology of and apparatus for accurately positioning devices for performing endoscopic cannulation, papillotomy and sphincterotomy and similar procedures. The sphincterotome with a steerable or adjustable distal segment of the present invention allows the physician to control the position of the distal tip of the device independently of the endoscope and adjust for inconsistencies in the device and the anatomy. According to one embodiment of the present invention, a threaded portion of a cable assembly cooperates with a torque transmission element and a cog to enable the operator to rotate a cutting wire into a desired position relative to the catheter. Alternate embodiments allow the operator to fix the depth of a needle knife while allowing, if desired, accurate rotational positioning of the associated catheter. Threaded stabilizing elements, pivot elements and a steering wire may be used together or individually to accomplish these features. Presently available products that may be modified according to the present invention include, but are not limited to, Boston Scientific Sphincterotomes and Needle Knives.

A power transmission includes a first rotating member driven by an external drive source, an electromagnetic solenoid provided to the first rotating member, a second rotating member fixed to a main shaft of a rotary apparatus, and an mechanism for engaging and disengaging a plunger of the electromagnetic solenoid from the second rotating member. When the rotary apparatus is not used, the energy of the external drive source may be prevented from being wasted by interrupting the torque transmission from the first rotating member to the second rotating member by the operation of the mechanism for engaging and disengaging.

A CAM device includes an array of CAM cells each having a spin torque transfer (STT) storage cell to store a data bit. Each STT storage cell includes a first magnetic tunnel junction (MTJ) element coupled between a first input node and an output node of the CAM cell, a second MTJ element coupled between a second input node and the output node of the CAM cell, and a first match transistor coupled between the match line and ground potential and having a gate coupled to the output node. The logic state of the data bit is represented by the relative resistances of the first and second MTJ elements.

A rotatable torque-transmitting apparatus includes a stationary piston and a rotatable apply plate. The rotatable apply plate is disposed adjacent a rotatable housing and separated therefrom by a return spring assembly which in a preload condition is trapped between the apply plate and the rotatable housing to limit the disengaged force which is transmitted between the rotatable housing and the stationary piston.

A drive control system for an automotive vehicle includes an engine, an automatic transmission, a torque converter, a start clutch, an oil pump, a hydraulic pressure control unit, an engine control unit, an automatic engine stop/restart control unit and a torque transmission control unit configured to calculate target start clutch engagement time and torque based on an accelerator opening of the vehicle, calculate a target engine torque based on the target clutch engagement torque and cause the hydraulic control unit and the engine control unit to control the engagement state of the start clutch and the output torque of the engine according to the target clutch engagement time and torque and the target engine torque at a restart of the engine.

A torque transmitting unit in the power train of a motor vehicle for transmitting torque between an engine crankshaft, and a transmission having at least one input shaft with at least one friction clutch. The transmission input shaft is coupled with the crankshaft by the friction clutch, which includes friction disks on the power input and/or output sides, and that are pressed together axially along an axis of rotation of the transmission input shaft to form a frictional engagement through a plurality of disks arranged in alternating layers in the axial direction. The disks are pressed against a stop by an actuator and with an actuating bearing interposed, wherein the actuator is connected to a fixed part of the transmission housing in a rotationally fixed connection. The friction clutch is a wet clutch.

The present disclosure relates to a catheter including a segment having a longitudinal axis, and a plurality of circumferential supports surrounding the axis. A plurality of filaments surround the circumferential supports to enhance torque transmission through the catheter segment.

A spring clutch is provided which has improved durability by preventing a clutch spring from breaking due to fatigue. A cylindrical clutch spring made from a wire having a square section is mounted between a pulley and a pulley hub mounted in the pulley. An end of the clutch spring is coupled to the pulley hub. A clutch surface is formed on the inner periphery of the pulley and is formed with a large-diameter recess at a position opposite to the end portion of the clutch spring including the torque transmission end. When the pulley rotates in one direction, the clutch spring expands. At this time, the end portion of the clutch spring including the torque transmission end expands in the large-diameter recess, thus relaxing sharp torque produced in the clutch. This prevents local stress concentration on the clutch spring and breakage of the clutch spring and improves the durability of the clutch.

The invention relates to a torque transmission device, especially for a drive train comprising an internal combustion engine and a twin-clutch transmission having two transmission input shafts and one transmission output shaft, each transmission input shaft being connectable to an internal combustion engine via a clutch of the torque transmission device.

A hydrodynamic torque converter includes a converter housing and a turbine wheel which is arranged in the converter housing and is rotatable with respect to the converter housing about a rotational axis of the converter. The torque converter further includes a lockup clutch for producing a torque transmission connection between the converter housing and the turbine wheel. The lockup clutch has a first friction surface arrangement held by a first friction surface carrier arrangement substantially fixed with respect to rotation relative to the converter housing, a second friction surface arrangement is held by a second friction surface carrier arrangement substantially fixed with respect to rotation relative to the turbine wheel, a contact pressing arrangement for pressing the first and the second friction surface arrangement against one another in frictional contact, and an abutment arrangement at which the first and second friction surface arrangement can be supported substantially in the direction of the axis of rotation when pressed by the contact pressure arrangement. The first friction surface carrier arrangement has a substantially annular body region connected either directly or indirectly with the converter housing and driver projections which are arranged at a distance from one another in the circumferential direction proceeding from the body region. Respective counter-driver projections at the first friction surface arrangement engage between these driver projections.

A vehicle with primary and secondary drivelines and a power take-off unit (PTU). The primary driveline has a first differential that is configured to distribute power to a first set of wheels. The PTU has a PTU input, a PTU output and a synchronizer for selectively de-coupling the PTU output from the PTU input. The secondary driveline is configured to distribute power to a second set of wheels and has a propshaft, a second differential, a pair of half-shafts and at least one torque transfer device (TTD). The propshaft transmits rotary power between the PTU output and an input of the second differential. The half-shafts are rotatably coupled to an output of the second differential and are configured to transmit rotary power to the second set of wheels. The at least one TTD is configured to selectively inhibit torque transmission through the second differential to the second set of wheels.

A leg assist device having an abnormality management procedure which appropriately adapts to an abnormal situation is provided. The leg assist device is provided with a leg attachment and a controller. The leg attachment comprises upper and a lower links connected with a rotary joint, and an actuator. The upper link is to be attached to the upper leg of the user. The lower link is to be attached to the lower leg of the user. The actuator swings the lower link relative to the upper link. The controller outputs the commands so that the swing angle of the lower link follows a target trajectory. Further, the controller executes a first abnormality management process in which the controller shuts off torque transmission from the actuator to the user when the controller detects an abnormality before outputting the commands to the actuator.

A catheter assembly (1), including an outer catheter (2) and an inner catheter (6) capable of being inserted into the outer catheter (2). The catheter assembly is characterized in that an outer catheter hub (5) and an inner catheter hub (9) are fixedly fitted to each other so that the two catheters are not rotated nor moved relative to each other, and when fitted to each other, at least a part of the tip of the inner catheter (6) is protruded by 10 mm or shorter from the tip of the outer catheter (2). When the inner catheter is inserted into the outer catheter, operabilities such as kink resistance, press-in performance, and torque transmission performance are excellent and the inner diameter thereof is increased when the catheter is used after indwelling. As a result, the range of choices of a catheter for treatment can be increased.

An opening and closing control system for an opening-closing member comprises an opening and closing mechanism for opening and closing the opening-closing member, an actuator for operating the opening and closing mechanism, an electromagnetic clutch for controlling a torque transmission by connecting and disconnecting the actuator and the mechanism, an opening and closing angle detecting means for detecting an opening and a closing angle of the opening-closing member relative to the vehicle, and a control means for controlling an electric power supplied to the electromagnetic clutch based on a detected result from the opening and closing angle detecting means and controlling an electric power supplied to the actuator, in which a supporting force required for supporting the opening-closing member is increased, and the control means for decreasing the electric power supplied to the electromagnetic clutch in accordance the opening-closing operation from an intermediate position to an opened position or a closed position.

The invention relates to a position adjustable multi-hob rotary cutting test-bench. The soil warehouse base fixed on the soil warehouse and a rectangular base fixed on the ground frame are supported by a looping support and looped by two hydraulic motors synchronously. Periphery of the soil warehouse is provided with flanges, which is provided with four guiding pillars evenly and four hydraulic cylinders; the four hydraulic cylinders driven synchronous vertical position into the soil to the campaign from the four columns to orientation and direction of torque transmission. 6 shelves uniform foundation column layout, fixed a column to open the top 4 at the top ring groove of the frame, forming a rectangular frame; connected at the top of the bottom bracket has three slide rail and the knife block, plate hob installed in the Seat knife. Using IPC test, data acquisition cards, the pressure of the flow velocity sensor, dynamic strain gauge, high-speed digital camera system on the cutting process of geotechnical monitoring. The test-bench is mainly used for the multi-hob and rotary cutting of rock mechanical properties of the relevant test.

A hydraulic control circuit is disclosed for a continuously variable transmission comprising a continuously variable ratio transmission unit (“variator”) 10, the circuit comprising a supply line 106 and means (which may take the form of a pump 110) for providing a flow of pressurised fluid in the supply line, means (which may comprise a pressure control valve 116) for generating a back pressure in the supply line, and at least one connection for feeding fluid from the supply line to a hydraulic actuator 100 acting on a movable torque transmission 23-37 element (which may comprise a roller 28) of the variator 10. The valve means 152 connected to the supply line allows pressure in the supply line to be selectively modified in response to rate of flow in the supply line.