3649results about "Mechanical actuated clutches" patented technology

Providing pressurized fracturing fluid with a fracturing pump transport comprising a first fracturing pump and a second fracturing pump that are coupled on opposite sides of a dual shaft electric motor. A first drive line assembly comprising a first engagement coupling that allows for selective engagement and/or disengagement of the first fracturing pump with the dual shaft electric motor. A second drive line assembly comprising a second engagement coupling that allows for selective engagement and/or disengagement of the second fracturing pump with the dual shaft electric motor. The fracturing pump transport also comprising an engagement panel that allows for selective engagement or disengagement at the first engagement coupling based on receiving a remote command.

A freewheel is provided for mounting a plurality of sprockets on an axle of a bicycle. The freewheel basically includes an inner tubular body, an outer tubular body coaxially mounted on the inner tubular body with a bearing assembly rotatably coupling the inner tubular body to the outer tubular body. A one-way clutch is coupled between the inner tubular body and the outer tubular body to allow one-way rotation between the inner and outer tubular bodies. In the preferred embodiment, seven sprockets are mounted on the exterior of the outer tubular body. The bearing assembly has a pair of ball bearing races of the same diameter located at one end. An outer ball race or housing and a side plate are utilized in conjunction with the inner tubular body to fixedly secure the first and second ball bearings on the exterior surface of the inner tubular body. The inner tubular body with the bearings is then fixedly coupled to the outer tubular body so that the outer tubular body can rotate relative to the inner tubular body. The one-way clutch includes a pair of pawls attached to the inner tubular body and a set of ratchet teeth formed on the inner tubular body. The ratchet teeth are rotated between splines that are formed on the exterior surface of the outer body so as to maximize strength and minimize material. The outer tubular body has a step-shaped configuration with a plurality of abutment stoppers formed on the splines of the largest section such that some of the sprockets are installed from one direction and the other sprockets are installed in a second direction.

A method of controlling the positioning of the synchronizers of a dual clutch transmission having a plurality of synchronizers to selectively engage and disengage various gears sets, and a plurality of shift actuators adapted to move the synchronizers. The method includes the steps of initiating a control routine to move a synchronizer to a full engagement position with a gear set and monitoring the positions of all engaged synchronizers. The method also includes reinitiating the control routine to move a synchronizer back into the full engagement position when any engaged synchronizer slips out to a minimum engagement position. Further, the method includes initiating a control routine to move a synchronizer to a neutral position and monitoring the position of all disengaged synchronizers. Also, reinitiating the control routine to move a synchronizer back to the neutral position when any disengaged synchronizer drifts beyond a pre-determined neutral hysteresis position.

The electromagnetic actuator includes an electromagnetic coil configured to provide actuation force in accordance with a solenoid current to be supplied, to a clutch and configured to actuate the clutch to control relative rotation between first and second members. The electromagnetic actuator includes a detector configured to detect the clutch actuated to produce a detection signal. The electromagnetic actuator includes a controller configured to respond to the detection signal from the detector to control the solenoid current.

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 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 mechanical mechanism is used to prevent a rotor of an aircraft from rotating when the rotor is not in use. The mechanical mechanism disengages when the speed of the rotor exceeds a speed threshold and the mechanism reengages when the speed of the rotor is below the speed threshold.

A pair of first speed gears (26a, 26b) is provided between a first input shaft (14) and a first output shaft (20), and a pair of fourth speed gears (30a, 30b) is provided between a second input shaft (18) and the first output shaft. A pair of third speed gears (34a, 34b) and a pair of fifth speed gears (36a, 36b) are provided between the first input shaft and a second output shaft (22), and a pair of second speed gears (40a, 40b) and a pair of sixth speed gears (30a, 42b) are provided between the second input shaft and the second output shaft. A backward input gear (34a) integrated with the first input shaft and a backward output gear (46b) provided on the first output shaft are connected to each other via idler gears (46a, 46b) disposed on a sub shaft (24). By this arrangement the length in an axial direction of the transmission is made short.

The invention is directed to a multiple-clutch device, such as a double-clutch device, for arranging in a drivetrain of a motor vehicle between a drive unit and a transmission, wherein the clutch device has a first clutch arrangement associated with a first transmission input shaft of the transmission and a second clutch arrangement associated with a second transmission input shaft of the transmission for transmitting torque between the drive unit and the transmission. According to one aspect of the invention, it is suggested that at least one of the clutch arrangements has an actuating piston defining a pressure chamber for actuation, preferably for engagement of the clutch arrangement by means of a pressure medium, preferably a hydraulic medium, wherein the actuating piston divides the pressure chamber from an associated centrifugal force pressure compensation chamber which receives a pressure compensation medium.

The present invention provides a driving component, and a photosensitive drum and a process cartridge comprising the driving component. The driving component comprises a gear fixed at one end of the photosensitive drum and a longitudinal regulating component. The longitudinal regulating component comprises a first motion subassembly, a groove part and a central shaft part. The groove part has an upper chute and a lower chute which are orthogonal in space. The first motion subassembly forms relative slide coordination with the upper chute along a first direction. The central shaft part has a common axis with the gear which forms relative slide coordination with the lower chute along a second direction. The first direction and the second direction are all perpendicular to the longitudinal direction of the photosensitive drum.

A hybrid linear actuator features a central load shaft on which a plurality of solid-state magnetostrictive thrusters are positioned in operative relation to electric motors of a permanent magnet synchronous type to impart linear thrust force to the load shaft through clutch units also positioned thereon and under control of force and stroke amplification of output force from motor shafts projecting from the motors.

A clutch module which includes a first rotating member including at least one strut actuation module and a second engaged member including cam surfaces thereon for engagement by said strut actuation module. The strut actuation module includes a frame with a strut pivotally movable with respect to the frame. The strut includes an engagement end and a base end including a first side and a second side thereof. A pin or post portion extends from the frame and has an insulated bobbin with an energizable coil surrounding the bobbin. A U-shaped member including a pair of actuation legs is attached to the pin member and forms a magnetic gap between the base end of the strut and peripheral ends of the legs, such that when the coil is energized the peripheral ends of the legs are polarized in a first polarity and the frame and the strut are polarized with an opposite polarity thereby biasing the strut toward the peripheral ends and pivoting the actuation end into engagement with a cam surface of the engagement member.

A drive assembly driven by a drive unit locks one or several operating units (6) of an agricultural implement (1) or of a self-propelled implement. The operating unit (6) can be locked when switching off the drive unit or upon reaction of an overload coupling (4). The drive assembly (3) has an overload coupling (4) connected to the drive unit and driven by the drive unit in one driving direction of rotation. The overload coupling (4) is also connected to the operating unit (6). The drive assembly (3) further has a brake unit (5) connected to the overload coupling (4). The brake unit (5) is intended to be arranged in the driveline between the overload coupling (4) and the operating unit (6). Actuating mechanism (10) actuates the brake unit (5) when the operating unit is running so that the operating unit is braked and locked. Thereafter, the overload coupling is disconnected.

A method of controlling the engagement force of the synchronizers of a dual clutch transmission having a plurality of synchronizers to selectively engage and disengage various gear sets, and a plurality of shift actuators adapted to move the synchronizers. The method includes the steps of initiating a control routine to pressurize a shift actuator to move a synchronizer to a predetermined engagement position and determining the necessary level of force required to move the desired shift actuator to the predetermined engagement position such that the engagement movement is effected without excessive force. The method also includes the steps of determining the hydraulic pressure that corresponds to the determined level of force and varying the amount of available hydraulic line pressure delivered to the shift actuator such that the delivered pressure is the amount that corresponds to the determined level of force.

The invention is directed to a multiple-clutch device, such as a double-clutch device, for arranging in a drivetrain of a motor vehicle between a drive unit and a transmission, wherein the clutch device has a first clutch arrangement associated with a first transmission input shaft of the transmission and a second clutch arrangement associated with a second transmission input shaft of the transmission for transmitting torque between the drive unit and the transmission. According to one aspect of the invention, it is suggested that a bearing arrangement is associated with at least one of the clutch arrangements, wherein the latter is supported or can be supported so as to be relatively rotatable by means of the bearing arrangement on at least one of the transmission input shafts, at least one of which is constructed as a hollow shaft and a shaft constructed as a hollow shaft encloses the other shaft, preferably at least at the radial outer transmission input shaft which is constructed as a hollow shaft.

The invention relates to a hydraulic twin clutch for a transmission with two transmission input shafts, preferably for a power-shift transmission in motor vehicles, with concentric arrangement of the two transmission input shafts, a driven clutch housing, two hydraulically actuated clutches with friction disks and annular piston-cylinder units, the first clutch connecting the clutch housing selectably to the first transmission input shaft and the second clutch connecting the clutch housing selectably to the second transmission input shaft. It is distinguished by the fact that the two clutches are arranged adjacent one another, separated by a clutch web firmly connected to the clutch housing, and the two piston-cylinder units provided for the actuation of the clutch are likewise arranged adjacent one another and separated by the clutch web, between the clutches and the transmission input shafts, on a smaller diameter than the clutches. The essential advantages are compact construction combined with high torque capacity and the possibility of achieving complete compensation of the centrifugal-force-dependent pressures in the working chambers through the provision of a compensating chamber.