1181results about "Telemotors" patented technology

An electrically driven brake booster (1) includes an input member (4) disposed in operative association with a brake pedal (12), an output member (5) disposed in operative association with the master cylinder (6), and drive transmitting device (10) for translating a rotating motion of a motor (9) into a linear motion to be transmitted to the output member (5). The drive transmitting device (10) comprises a rack (23) formed on the output member (5), and pinions (21, 22) disposed in operative association with the motor (9) and in meshing engagement with the rack (23). Also, reaction transmitting device (8) which transmits a brake reaction to the input member (4) and the output member (5) at a given proportion is provided. In comparison to conventional drive transmitting device, the drive transmitting device (10) of the present invention has a simple construction, a reduced weight and a better transmission efficiency. The provision of reaction transmitting device allows a correct brake control to be achieved on the basis of a brake reaction.

A drive device comprising a closed hydraulic circuit which has a hydraulic drive adapted to be actuated by hydraulic medium and has a hydraulic pump responsible for the supply and removal of the hydraulic medium to and from the hydraulic drive. For the operation of the hydraulic pump an electric motor is provided. The activation of the hydraulic drive is controlled by the operational state of the hydraulic pump.

The present invention is directed to a system for controlling a hydraulic actuator, and various methods of using same. In one illustrative embodiment, the system comprises a first hydraulic cylinder, an isolated supply of fluid provided to the first hydraulic cylinder, the isolated supply of fluid positioned in an environment that is at a pressure other than atmospheric pressure, an actuator device coupled to the first hydraulic cylinder, the actuator device adapted to drive the first hydraulic cylinder to create the sufficient pressure in the fluid, and at least one hydraulic line operatively intermediate the first hydraulic cylinder and the hydraulic actuator, the hydraulic line supplying the sufficient pressure in the fluid to the hydraulic actuator in the remote locale.

The present invention relates to methods and systems for power generation including a method and system for electrical power generation by utilizing forces due to vehicle weights from traffic on roadways. An embodiment of the invention uses multiple compressible hydraulic cylinders of different types, the cylinders used being dynamically selected responsive to the various weights of the vehicles presenting.

An electrically actuated brake booster capable of obtaining a desired boost ratio for a given input pressure when an electric actuator is activated as a boost source, so as to ensure a desired operability of a brake pedal. The electrically actuated brake booster comprises: an input piston 22 to which an input thrust is applied through an input rod 9 that moves in coordination with operation of a brake pedal 8; and a booster piston 21 to which a booster thrust is applied by an electric actuator 40 that uses an electric motor 41 as a drive source, such that the input piston 22 and the booster piston 21 are disposed to be movable relative to each other but are normally maintained in a neutral position of relative displacement by means of springs 34. While an amount of relative displacement between the pistons 21 and 22 is determined by the potentiometer 45, the electric motor 41 is controlled to adjust the amount of relative displacement to a predetermined value. At the same time, a reaction force acting on the input piston 22 resulting from a hydraulic brake pressure is offset by urging forces of the springs 34 to thereby obtain a desired level of boost ratio.

A hydraulic system includes a variable displacement hydraulic pump connectable to a power source, a hydraulic motor, a fluid circuit, a pump displacement control, and a controller. The pump has an inlet for receiving fluid, an outlet for discharging pressurized fluid, and a pump displacement input. The motor has an inlet for receiving pressurized fluid and an outlet for discharging spent fluid. The fluid circuit includes a supply conduit for conducting fluid discharged by the pump to the motor and a return conduit for returning fluid discharged by the motor to the pump. The pump displacement control cooperates with the pump displacement input to vary pump displacement. The controller communicates with the pump displacement control to control the pump output such that the motor is driven at a constant speed to thereby drive a generator connected to the motor at a constant speed despite speed fluctuations of the power source.

A hydraulically-operated micromanipulator apparatus is disclosed. The micromanipulator apparatus comprises: a micromanipulator fine control unit including an operating-side piston finely movable with respect to an operating-side hydraulic cylinder and fine control means, either the operating-side piston or the operating-side hydraulic cylinder being stationarily retained, while the rest being finely operable by the fine control means; a hydraulically-operated micromanipulator including an actuating-side piston finely movable with respect to an actuating-side hydraulic cylinder and a fine displacement member, the actuating-side hydraulic cylinder being connected to said operating-side hydraulic cylinder through a hose, either the actuating-side piston or the actuating-side hydraulic cylinder being stationarily retained, while the rest being attached to the fine displacement member; and compensating means for compensating a pressure change of the hydraulic fluid between said operating-side hydraulic cylinder and said actuating-side hydraulic cylinder when ambient temperature changes.