Abstract: A data distribution device distributes a plurality of sets of data to a user one set of data at a time intermittently at intervals. Every time derived data obtained using the data are generated by the user, a registration device for user registers derived data generation history information indicating that the derived data are generated in a history management database. A derived data generation history information monitor examines whether or not derived data generation history information is registered in the history management database at a predetermined timing and, when no derived data generation history information is registered, suspends subsequent distribution of the data from the data distributor to the user.

Abstract: A light source driving device including: a dimming/toning controller that receives a dimming indication signal and a toning indication signal for driving a plurality of light sources and calculates control information of each of the light sources based on the diming indication signal and the toning indication signal; and a plurality of driving circuits that respectively drives each of the light sources according to each of the control information calculated by the dimming/toning controller.

Abstract: The invention provides a synthetic hydrated organosulfur agent, a method for producing it, and a method of using it for exterminating soil fungi. The synthetic hydrated organosulfur agent is prepared by adding starch to an inorganic hydrated sulfur agent, and sulfur is enveloped in starch in the agent. When the agent is applied to soil, microbes and pathogenic fungi (fusariums, pythiums and other various mold fungi) in soil act on the saccharides such as glucose polymerized with starch, and they are attracted by the grains of the agent. While the microbes and pathogenic fungi thus attracted them degrade the grains, they are kept in contact with the sulfur having been released from the degraded grains and are thereby killed. Not deactivated in soil, sulfur in the synthetic hydrated organosulfur agent exhibits its fungicidal activity for a long period of time.

Abstract: A capacity control apparatus for a variable capacity hydraulic pump including: a capacity control cylinder having a capacity control piston for driving a capacity control member of the hydraulic pump, with a large diameter chamber and a small diameter chamber disposed at both sides of the capacity control piston, and driving the capacity control piston with a pressure fluid that is supplied into the larger diameter chamber, in a direction in which the capacity of the hydraulic pump may be reduced and for driving the capacity control piston with a pressure fluid that is supplied into the small diameter chamber, in a direction in which the capacity may be increased; a passage for the small diameter chamber to communicate with a pump discharge path; at least one control valve for controlling the capacity of the hydraulic pump by selectively communicating the large diameter chamber with either a pump pressure discharge path and a reservoir; and a variable throttle valve in a passage with the at least one control

Abstract: There is provided a displacement control system for a variable displacement hydraulic pump which has a displacement control piston assembly (6) having a large diameter chamber (7) for operating a displacement control member (5) of the variable displacement hydraulic pump selectively in a direction of smaller displacement and in a direction of larger displacement, first control valve (8) and second control valve (9) for selectively communicating the large diameter chamber of the displacement control piston assembly with a pump discharge line and a tank, the first control valve being placed at a supply position by the pump discharge pressure, and at a drain position by a spring associated with the displacement control piston assembly via a feedback lever, and the second control valve being placed at a first position by the pump discharge pressure for communicating the pump port and the large diameter chamber and at a second position by a load pressure for communicating the pump port and the large diameter chamb

Abstract: A displacement control device of a variable-displacement hydraulic pump which increases the response speed when the pump discharge pressure is low and suppresses increase of the response speed when the pump discharge pressure is high. The displacement control device has a variable-displacement piston 3 which activates a displacement control member 2 of the variable displacement hydraulic pump 1, a circuit 10 which provides a communication between a large-diameter pressure chamber 6 on the variable-displacement piston 3 and an output port 9 of the control valve 7, and a variable restriction valve 11 which is provided in the circuit 10. The restriction valve 11 increases and decreases its opening area when the pump discharge pressure is low and high, respectively.

Abstract: In a pilot operated control valve system provided with a plurality of valves for controlling a plurality of hydraulic devices such as hydraulic cylinders, there is employed a plurality of valves each of which does not interfere with each other in operation and requires a minimum mounting space in the system to enable the system to be a small system having a construction easily adapted to control a plurality of hydraulic devices and also adapted to simultaneously supply the pressure oil to the hydraulic devices from a pair of hydraulic pumps through the same hydraulic circuit as needs require.

Abstract: In a control valve system provided with a plurality of valves for controlling a hydraulic equipment such as hydraulic cylinders, there are employed a plurality of valves each of which does not interfere with each other in operation and requires a minimum mounting space in the system to enable the system to be a small-sized system having a construction easily adapted to control a plurality of hydraulic equipments.

Abstract: In a pilot operated control valve system provided with a plurality of valves for controlling hydraulic equipment such as hydraulic cylinders, there are employed a plurality of valves each of which does not interfere with each other in operation and requires a minimum mounting space in said system to enable said system to be a small-sized system having a construction easily adapted to control a plurality of hydraulic equipments.