An attitude-supporting apparatus of a wearable robot includes an actuator for generating a hydraulic pressure by a worker's direct manipulation, and a driving unit including, the driving unit including: an inner component and an outer component capable of relatively rotating, and control components for controlling the relative rotations of the inner component and the outer component, wherein a motion of the control components is controlled by receiving the hydraulic pressure generated from the actuator.

A cryogenic fluid pump includes a drive assembly and a pumping assembly. The drive assembly includes a cylinder. The cylinder includes an annular dump channel formed in and extending about an interior wall of the cylinder. A piston is reciprocatable within the cylinder between a first and second position. A hydraulic pressure chamber is defined by the cylinder and the piston. The piston includes an axial spill passage in communication with the pressure chamber and a transverse spill passage in communication with the axial spill passage. The transverse spill passage includes a piston dump port which is sealed to the cylinder in the first position and in the second position unsealed to the cylinder to permit fluid exit from the pressure chamber. The second position includes an over travel state and the dump area of the piston dump port when unsealed to the cylinder increases as the piston advances.

A device and method for chemicals to be fed into a water system, treating the water system as it enters, for example, a fire protection mains and/or fire protection systems (FPS) to protect and maintain the longevity of the water system preventing damages to the water system or enhancing the operation characteristics of the system. This device is a treatment system that may be installed as a portable or permanent device with chemicals such as, corrosion inhibitors, wetting agents, polymeric dispersants, biocides, biostats or other water chemical enhancing effects with means for injecting the chemicals into the fire protection system or a bypass feed system utilizing the fluid means without the need for any electricity. Activation of the pump occurs when water enters the FPS mains and FPS sprinkler system from an outside source. Valving is included to isolate the pump and drums, storage tank to prevent backflow from the FPS.

A device and method for chemicals to be fed into a water system, treating the water system as it enters, for example, a fire protection mains and/or fire protection systems (FPS) to protect and maintain the longevity of the water system preventing damages to the water system or enhancing the operation characteristics of the system. This device is a treatment system that may be installed as a portable or permanent device with chemicals such as, corrosion inhibitors, wetting agents, polymeric dispersants, biocides, biostats or other water chemical enhancing effects with means for injecting the chemicals into the fire protection system or a bypass feed system utilizing the fluid means without the need for any electricity. Activation of the pump occurs when water enters the FPS mains and FPS sprinkler system from an outside source. Valving is included to isolate the pump and drums, storage tank to prevent backflow from the FPS.

Improvements to the steam engine for the purpose of small scale generation of electricity using biomass fuels and for co-generation of heat and electricity using biomass fuels in both developed and less developed countries are described. The engine is particularly well adapted to co-generation where the thermal load, as in building heating and many process applications, is extremely variable, because of its ability to operate efficiently under partial load. For the same reason, it would be suited to solar generated steam. Experiments have been conducted with steam as the working fluid. The design may in some or all respects be applied to other working fluids.

Improvements to the steam engine for the purpose of small scale generation of electricity using biomass fuels and for co-generation of heat and electricity using biomass fuels in both developed and less developed countries are described. The engine is particularly well adapted to co-generation where the thermal load, as in building heating and many process applications, is extremely variable, because of its ability to operate efficiently under partial load. For the same reason, it would be suited to solar generated steam. Experiments have been conducted with steam as the working fluid. The design may in some or all respects be applied to other working fluids.

An agricultural machine or implement has a main frame section and at least one wing section, each having lift cylinders. A main shank frame may be pivotally attached to the main frame section and may have hydraulically adjustable gauge wheels. Wing shank frames may be pivotally attached to the wing sections and may also have hydraulically adjustable gauge wheels. Bypass circuits may be used to individually adjust the lift cylinders and gauge wheel cylinders. A controller or controllers is used to purge air from the lift cylinders, gauge wheel cylinders, cylinders used to raise the shank frames for transport, and from the bypass circuits. The purge routine may be selectable as individual steps, hydraulic subsystem purges, or as one automatic purge routine.

An agricultural machine or implement has a main frame section and at least one wing section, each having lift cylinders. A main shank frame may be pivotally attached to the main frame section and may have hydraulically adjustable gauge wheels. Wing shank frames may be pivotally attached to the wing sections and may also have hydraulically adjustable gauge wheels. Bypass circuits may be used to individually adjust the lift cylinders and gauge wheel cylinders. A controller or controllers is used to purge air from the lift cylinders, gauge wheel cylinders, cylinders used to raise the shank frames for transport, and from the bypass circuits. The purge routine may be selectable as individual steps, hydraulic subsystem purges, or as one automatic purge routine.

According to one embodiment, an expander includes a piston provided reciprocatively in a first direction in a cylinder, a crankshaft, an XY-separation crank mechanism provided between the piston and the crankshaft, which converts a reciprocating motion of the piston and a rotary motion of the crankshaft into one another, a cylinder head including an intake port and an outlet port, a suction valve which opens/closes the intake port, a discharge valve which opens/closes the outlet port, an intake-side valve mechanism which opens/closes the suction valve and an outlet-side valve mechanism which opens/closes the discharge valve. At least one of the intake-side and outlet-side valve mechanisms includes an XY separation drive mechanism.

According to one embodiment, an expander includes a piston provided reciprocatively in a first direction in a cylinder, a crankshaft, an XY-separation crank mechanism provided between the piston and the crankshaft, which converts a reciprocating motion of the piston and a rotary motion of the crankshaft into one another, a cylinder head including an intake port and an outlet port, a suction valve which opens/closes the intake port, a discharge valve which opens/closes the outlet port, an intake-side valve mechanism which opens/closes the suction valve and an outlet-side valve mechanism which opens/closes the discharge valve. At least one of the intake-side and outlet-side valve mechanisms includes an XY separation drive mechanism.