An apparatus for generating energy by intake and drainage of a fluid includes a reservoir and a pair of receptacles in fluid communication with the reservoir and mounted above the reservoir. Each of the pair of receptacles has a variable volume for holding the fluid. The variable volume is controlled by movable portions. The apparatus includes a lever rotatable about a lever pivot. The lever is coupled at a first side of the lever pivot to the movable portions associated with a first one of the pair of receptacles. The lever is coupled at a second side of the lever pivot to moveable portions associated with a second one of the pair of receptacles. The apparatus includes control valves controlling fluid communication between the pair of receptacles and the reservoir and a controller coupled to the control valves. The apparatus includes a generator coupled to moving portions.

A fan drive system includes a hydraulic pump, a hydraulic motor that rotates a fan on the basis of hydraulic oil supplied from the hydraulic pump, a data acquisition unit that acquires an actual fan speed of the fan, a target amount determination unit that determines a target fan speed of the fan on the basis of a state of an object to be cooled of the fan, and an estimating unit that estimates a state of the hydraulic pump or a state of the hydraulic motor on the basis of a change of a feedback amount that indicates a difference between the target fan speed and the actual fan speed.

An energy conversion system is dedicated to pressurizing a flow using a constant volume pressure source. In some embodiments, the constant volume pressure source is based on the pressure increase associated with a phase conversion in a constant volume enclosure due to heating up of the entrapped matter or exposing a mass to the gravitational field.

An energy conversion system is dedicated to pressurizing a flow using a constant volume pressure source. In some embodiments, the constant volume pressure source is based on the pressure increase associated with a phase conversion in a constant volume enclosure due to heating up of the entrapped matter or exposing a mass to the gravitational field.

A rotational mechanical transformer has been arranged for transfer and transformation of velocity, force, angular momentum, torque, energy/work, energy density, and pressure, associated with at least one rotating device. The transformer includes an actuator having at least one cylinder arranged to contain the at least one working fluid, an externally supported shaft and a drive shaft having parallel axes orthogonally displaced by a predetermined displacement, and each respectively connected to at least one connecting arm and at least one additional connecting arm. The at least one cylinder includes at least one actuator rod and at least one blind end each respectively connected with at least one revolving eccenter axle and the at least one drive shaft, and have been arranged to allow for angular displacements of the at least one actuator with respect to the parallel axis.

A rotational mechanical transformer has been arranged for transfer and transformation of velocity, force, angular momentum, torque, energy/work, energy density, and pressure, associated with at least one rotating device. The transformer includes an actuator having at least one cylinder arranged to contain the at least one working fluid, an externally supported shaft and a drive shaft having parallel axes orthogonally displaced by a predetermined displacement, and each respectively connected to at least one connecting arm and at least one additional connecting arm. The at least one cylinder includes at least one actuator rod and at least one blind end each respectively connected with at least one revolving eccenter axle and the at least one drive shaft, and have been arranged to allow for angular displacements of the at least one actuator with respect to the parallel axis.

A fan drive system includes a hydraulic pump, a hydraulic motor that rotates a fan on the basis of hydraulic oil supplied from the hydraulic pump, a data acquisition unit that acquires an actual fan speed of the fan, a target amount determination unit that determines a target fan speed of the fan on the basis of a state of an object to be cooled of the fan, and an estimating unit that estimates a state of the hydraulic pump or a state of the hydraulic motor on the basis of a change of a feedback amount that indicates a difference between the target fan speed and the actual fan speed.

There is a pressing problem in the design of high-rise apartments and towers during the occurrence of the events like explosion, fire, earthquake since the inhabitants are not able to get out of the building and they get trapped in the dangerous situations.

Currently all around the world, there are some systems but they have not met the urgent requirements and we annually witness lots of death tolls caused by fire and explosion.

In order to remove the above-mentioned deficiencies, a new system has been designed which creates the possibility of transferring people from heights to the downside of the apartment in emergency conditions without requiring any energy.

The device works by converting the potential gravitational power of weight into kinetic and heat energy. This operation is done by controlling and converting the function of a variable and invariable hydraulic pump or hydro motor which is connected to two grooves spool and the pump outlet is controlled by a control valve and centrifugal governor. The control operation causes the spool steel wire to be slowly opened. Consequently the person descends. This system works like a hydrodynamic damper.

There is a pressing problem in the design of high-rise apartments and towers during the occurrence of the events like explosion, fire, earthquake since the inhabitants are not able to get out of the building and they get trapped in the dangerous situations.

Currently all around the world, there are some systems but they have not met the urgent requirements and we annually witness lots of death tolls caused by fire and explosion.

In order to remove the above-mentioned deficiencies, a new system has been designed which creates the possibility of transferring people from heights to the downside of the apartment in emergency conditions without requiring any energy.

The device works by converting the potential gravitational power of weight into kinetic and heat energy. This operation is done by controlling and converting the function of a variable and invariable hydraulic pump or hydro motor which is connected to two grooves spool and the pump outlet is controlled by a control valve and centrifugal governor. The control operation causes the spool steel wire to be slowly opened. Consequently the person descends. This system works like a hydrodynamic damper.

A rotational mechanical transformer has been arranged for transfer and transformation of velocity, force, angular momentum, torque, energy/work, energy density, and pressure, associated with at least one rotating device. The transformer includes an actuator having at least one cylinder arranged to contain the at least one working fluid, an externally supported shaft and a drive shaft having parallel axes orthogonally displaced by a predetermined displacement, and each respectively connected to at least one connecting arm and at least one additional connecting arm. The at least one cylinder includes at least one actuator rod and at least one blind end each respectively connected with at least one revolving eccenter axle and the at least one drive shaft, and have been arranged to allow for angular displacements of the at least one actuator with respect to the parallel axis.