1510 results about "Power take-off" patented technology

The invention relates to a hand tool for use with attachments. The hand tools of the invention may be used with attachments with various speed and torque requirements. Preferred hand tools comprise a body with a brushless DC motor and means. which control the energisation of the motor. In use the brushless DC motor of the preferred hand tool is electrically supplied to drive a power output means connected to said motor. Another preferred hand tool comprises a body with a motor contained therein, a void space between an internal surface of the body and at least a part of the motor, a fluid inlet port provided and a fluid outlet port provided in or on the body, and ducting means which provides a channel for fluid supplied via the fluid inlet port to and from the void space and then on to the fluid outlet port.

A torsional damper (10) rotatably supported for translating torque between a prime mover and the input of a transmission including a torque input member (12) that is operatively connected for rotation with the power take-off of a prime mover, an output member (14) operatively connected for rotation with the input to a transmission and a plurality of damping elements (16) interposed between the input member and the output member. The damping members (16) act to translate torque between the input and output members and to dampen torsional forces generated between the prime mover and the transmission. A bypass clutch (40) acts to translate torque directly between the input and output members thereby providing a path for partial torque translation that bypasses the damping elements at low rotational speeds of the input and output members. In addition, the torsional damper (10) includes a clutch release mechanism (42) that is responsive to centrifugal forces acting on the torsional damper to disengage the bypass clutch (40) to reduce the torque translated directly between the input and output members at high rotational speeds.

Recovery of electric power from low-grade waste heat / solar energy, comprising a closed-cycle charged refrigerant loop. Pressurized refrigerant fluid is pumped at ambient temperature through a heat exchanger connected to a waste heat / solar source to extract heat energy during conversion to a high pressure gas. Heated / pressurized refrigerant gas is inlet into an expander to power an output shaft during the expansion of the fluid to a cooled gas at approximately 0 psig. Cooled gaseous refrigerant is condensed to a liquid at low pressure and ambient temperature, and recycled under pressure to the heat exchanger. The expander is a reverse-plumbed gas compressor; the pressurized, hot refrigerant gas is inlet at what is ordinarily its outlet, and the normal inlet becomes the expander end. The refrigerant gas mass flow pressure / temperature drop spins the expander shaft for direct mechanical power take-off, or coupling to a synchronous or inductive generator to produce electricity.

A power take-off system for a gas turbine engine includes a starter coupled to a first spool using a first shaft, and a generator coupled to the second spool using a second shaft, the first shaft is circumferentially offset by the second shaft by an angle α. A method of assembling a gas turbine engine assembly that includes the power take-off system, and a gas turbine engine assembly including the power take-off system are also described.

The invention relates to a fracturing transmission and high-pressure discharging system. The fracturing transmission and high-pressure discharging system comprises a chassis and is characterized in that a high-power engine, a transfer case, a plurality of variable displacement plunger pumps and a double-acting fracturing pump are arranged on the chassis, the output end of the high-power engine is connected with the input end of the transfer case, the output end of the transfer case comprises a plurality of power take-off ports, and each power take-off port is connected with one variable displacement plunger pump; the variable displacement plunger pumps drive the double-acting fracturing pump through a hydraulic system. The fracturing transmission and high-pressure discharging system further comprises a system radiator and a heat dissipation plunger pump used for driving the system radiator, and the heat dissipation plunger pump is connected with one power take-off port of the transfer case. The power take-off ports of the transfer case and the variable displacement plunger pumps are arranged annularly. The fracturing transmission and high-pressure discharging system has the advantages that hydraulic driving replaces mechanical transmission, and working vibration is reduced; the layout space of a whole vehicle is saved, and meanwhile, operating efficiency and the stability of the whole vehicle are improved.

A hybrid vehicle powertrain system includes a first prime mover, a first prime mover driven power transmission mechanism having a power take-off adapted to drive a vehicle accessory, and a second prime mover. The second prime mover is operable to drive the power transmission mechanism alone or in combination with the first prime mover to provide power to the power take-off through the power transmission mechanism. The invention further includes methods for operating a hybrid vehicle powertrain system.

A power take-off for an electric vehicle. The power take-off includes a variable speed electric motor for driving at least one wheel of the vehicle. A transmission, including a neutral state, coupled to the electric motor. An auxiliary output shaft is coupled to the transmission. When the transmission is in the neutral state, the auxiliary output shaft will operate at a speed independent of wheel speed and dependent on the electric motor speed. When the transmission is operably engaged in other than the neutral state, the auxiliary output shaft will operate at a speed related to both the electric motor speed and the wheel speed.

A power output apparatus 20 includes a clutch motor, an assist motor, and a controller. The clutch motor and the assist motor are controlled by the controller to enable the power output from an engine to a crankshaft 56, and expressed as the product of its revolving speed and torque, to be converted to the power expressed as the product of a revolving speed and a torque of a drive shaft and to be output to the drive shaft. The engine can be driven at an arbitrary driving point defined by a revolving speed and a torque, as long as the energy or power output to the crankshaft is identical. A desired driving point that attains the highest possible efficiency with respect to each amount of output energy is determined in advance. In order to allow the engine to be driven at the desired driving point, the controller controls the clutch motor and the assist motor as well as the fuel injection and the throttle valve position. Such control procedures of the power output apparatus enhance the energy efficiency of the whole power output apparatus.

A PTO apparatus for a gas turbine engine having first and second drive shafts includes a first ring gear for being coupled to the first drive shaft and a first bevel gear engaged with the first drive gear and coupled to a PTO shaft. A second ring gear is provided for being coupled to the second drive shaft. A second bevel gear is engaged with the second drive gear and coupled to the PTO shaft through a one-way clutch. A method of operating a gas turbine engine includes operatively coupling a PTO shaft to first and second drive shafts and providing a starting torque to the first and second drive shafts through the PTO shaft. After the engine is started, power is transferred from the first drive shaft to the PTO shaft; and the second shaft is decoupled from the PTO shaft.

A power take-off system for a gas turbine engine includes a starter coupled to a second spool, and a clutch assembly coupled between the starter and a first spool, the clutch assembly configured to couple the first spool to the starter when starting the gas turbine engine assembly. A method of assembling a gas turbine engine assembly that includes the power take-off system, and a gas turbine engine assembly including the power take-off system are also described.

A device arrangement structure for hybrid construction equipment capable of reducing devices of a charging system in size is provided. For this purpose, in the device arrangement structure: a hydraulic pump (47) is connected to an engine (41) via a first power take-off (46); and a regenerative motor (59), which is regenerated by return oil from hydraulic actuators (10a, 10b), and a generator motor (55), which assists an engine as an electric motor to drive hydraulic pump and generates power with surplus torque of the regenerative motor, are provided in parallel with the hydraulic pump via the first power take-off.

A control system for the drive of a power take-off mechanism on an agricultural tractor that records machine-specific values of the implement attached to the tractor. The drive train between the tractor engine and the power take-off includes a CVT transmission. The control device is connected with a processor via a signal lead for receiving its output signals. The control device is connected for the formation of output signals via input leads with switches, controls, sensors, and actuators for the tractor to read the machine specific parameters of the attached implement.

The invention discloses a twin-motor two-planet-row and single clutch driving device of a hybrid vehicle in the technical field of machinery. The device is provided with a front planet row and a back planet row; the front planet row is provided with a front planet row planet wheel and a front planet row sun gear; the back planet row is provided with a back planet row planet wheel and a back planet row sun gear; the front planet row and the back planet row share a gear ring. The output shaft of an engine is connected with the input end of an integrated starter generator; the output end of the integrated starter generator is connected with the driving disk of the clutch; the driven disk of the clutch is connected with the planet wheel of the front planet row through a planet carrier; the sun gear of the front planet row is connected with a drive motor; the planet carrier of the planet wheel of the back planet row is arranged fixedly on a car frame; the sun gear of the back planet row is also connected with the drive motor; the outside gear of the gear ring is normally engaged with a power take-off gear. The twin-motor two-planet-row and single clutch driving device of the hybrid vehicle has the advantages of compact structure, large transmission ratio, large load support capability, stable driving, and high transmission efficiency, thereby realizing power dividing and infinite variable speed at the same time.

A PTO control system and method for engaging a PTO clutch of a vehicle or work machine such as, but not limited to, an agricultural tractor, that can effectively utilize both engine speed and PTO output speed values for determining a predicted and / or actual PTO load and other variable conditions which can effect engagement, and which can responsively calibrate the system for engagement under the load and other conditions and adaptively control applied acceleration and torque during the engagement.

In a hybrid vehicle, in order to stop an engine while a clutch is kept engaged and to transmit power from a motor to a drive shaft by changing a change speed state of a transmission when the power from a second motor is being transmitted to the drive shaft by the transmission, for example, a rotation speed of the first motor is adjusted so that the first motor can be connected to the drive shaft with the clutch disengaged while torque commands for both motors are set so that the power based on torque demand is outputted to the drive shaft, the power is transferred from the second motor to the first motor while both motors are connected to the drive shaft by the transmission, and the connection between the second motor and the drive shaft by the transmission is disconnected.

A hydraulic energy recovery and a mechanical drive system in one unit that also provides integral mounting of hydraulic pump / motors for primary drive, secondary drive, and pumps for cooling, lubrication, and low pressure systems along with a mounting position for a power take-off device.

A wave energy converter (WEC) includes a shell suitable for being placed within a body of water. The shell contains an internal oscillator comprising a “reaction mass” and a spring mechanism coupled between the reaction mass and the shell. The shell and internal oscillator are constructed such that, when placed in a body of water and in response to waves in the body of water, there is relative motion between the shell and the internal oscillator's mass. A power take-off (PTO) device is coupled between the internal oscillator and the shell to convert their relative motion into electric energy. In systems embodying the invention, the spring mechanism is designed such that its displacement or movement is less than the displacement or movement of the reaction mass. The spring mechanism may be any device which enables the reaction mass to undergo a given replacement while its displacement or movement is less than that of the reaction mass. This property enables the size of the WEC to be more readily controlled (e.g., made smaller).

An electronic height control system for a vehicle chassis air suspension is modified to provide bimodal operation. In the second mode of operation the chassis air suspension system is maintain a stationary in a stable, level position to serve as a base for a mobile aerial lift unit installed on the vehicle. Operation of the suspension system in its stabilization and leveling mode is triggered by activation of a vehicle power take-off unit (“PTO”) used to position the aerial lift unit.

A drive assembly for an agricultural machine. A power take off (PTO) output shaft is connected to a driving motor for driving an attachment. A drive transmission is positioned between and interconnects the driving motor and the support wheels of the agricultural machine. An input device is connected to an electronic control unit. A sensor senses the torque transferred between an attachment and the PTO output shaft, and an actuator is configured to change the transmission ratio of the drive transmission, thereby setting the propulsion speed of the agricultural machine such that the torque transferred between the PTO output shaft and an attachment does not exceed a pre-determined value. The electronic control unit further receives data from the input device and calculates a pre-determined value based on the data received, and thereafter controls the actuator accordingly.

A wave energy converter (WEC) includes a shell suitable for being placed within a body of water. The shell contains an internal oscillator comprising a “reaction mass” and a spring mechanism coupled between the reaction mass and the shell. The shell and internal oscillator are constructed such that, when placed in a body of water and in response to waves in the body of water, there is relative motion between the shell and the internal oscillator's mass. A power take-off (PTO) device is coupled between the internal oscillator and the shell to convert their relative motion into electric energy. In systems embodying the invention, the spring mechanism is designed such that its displacement or movement is less than the displacement or movement of the reaction mass. The spring mechanism may be any device which enables the reaction mass to undergo a given replacement while its displacement or movement is less than that of the reaction mass. This property enables the size of the WEC to be more readily controlled (e.g., made smaller).

A wind turbine has multiple blades (10) that are mounted on a shaft (19) with a ring around a circumference of the blades. There are tires (18) that are arranged to be in contact or out of contact with the ring. The tires draw generators when the tires are in contact with the ring and the ring is rotating. A controller monitors the wind conditions and controls the turbine to produce electricity or other-energy output or to shut down if the wind falls below a predetermined level.

A delivery vehicle for delivering liquids to a storage location and a liquid delivery control system therefor. The apparatus comprises manual and remote actuation of a clutch controller for engaging and disengaging a clutch of the vehicle, remote and manual actuation of a throttle controller for opening and closing a throttle of the vehicle, actuation of a power take-off controller for engaging and disengaging a power take-off on the vehicle, and actuation of a valve controller for opening and closing an internal flow valve in a cargo tank on the vehicle. The apparatus also may include actuation of a reel controller for unwinding a liquid delivery hose from a reel and rewinding the hose on the reel. A method of delivering a liquid to a storage location is also disclosed.

A wave energy converter (WEC) system includes a shell containing an internal oscillator comprised of a reaction mass suspended from the shell by an elastic spring in parallel with a constant force spring. The constant force spring provides a relatively constant force (Fc) to counterbalance the static weight of the reaction mass and reduce the extension “static” length of the elastic spring while the elastic spring exerts a force (Fes) on the reaction mass that is proportional to the displacement, x, of the elastic spring. A power take-off (PTO) device, located within the shell, coupled between the shell and the internal oscillator converts their relative motion into electrical energy.

An accessory drive mechanism for a hybrid vehicle, capable of operating accessories irrespective of the travel state of the vehicle, and also capable of smoothly switching between the power which is transmitted from the traveling motor side and the power which is transmitted from the accessory drive motor side. The accessory drive mechanism is provided with a drive power take-off mechanism (20) for taking out the power from a travel drive system (D). An accessory (11) is connected to the drive power take-off mechanism (20). A first one-way clutch (C1) which can transmit the power only to the accessory (11) side is disposed between the drive power take-off mechanism (20) and the accessory (11). An accessory driving motor (an auxiliary motor (12e)) is connected to the side of the accessory (11) which is on the opposite side from the drive power take-off mechanism (20). A second one-way clutch (C2) which can transmit the power only to the accessory (11) side is disposed between the accessory (11) and the accessory driving motor (12).

A method includes powering a drill motor with power derived from an all terrain vehicle (ATV) engine and controlling the drill motor. An apparatus includes a ATV with a power takeoff configured to deliver power from an ATV engine. A drill mast is moveably coupled to the ATV, a drill motor is configured to turn a drill bit and the drill motor is slidingly disposed on the drill mast. The drill motor is configured to be powered from the power takeoff; and a control is configured to operate the drill motor such that a hole can be drilled by the drill bit.

A power tool that includes a structure; a flywheel coupled to the structure; a driver that is translatable along a driver axis; and a follower assembly having an actuator and an activation arm assembly. The actuator is coupled to the activation arm assembly. The activation arm assembly is coupled to the structure and includes a pinch roller. Actuation of the actuator causes the pinch roller to translate toward and engage the driver to initiate driving engagement between the driver and the flywheel.

A power generation assembly for use in generating electrical power from air or water currents includes a rail system forming a loop, a vane assembly having a frame and at least one vane, and a car assembly slidably mounted to the rail, including a linkage portion coupled to the frame of the vane assembly and a power-take-off arrangement includes an element that is operatively coupled to the car assembly and a drive wheel coupled to a generator and configured to take power off the moving car assembly by the drive wheels being rotated by the passing power take off element.

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.