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Patent Searching and Data


Matches 751 - 800 out of 3,487

Document Document Title
JP2007028736A
To provide a thermal protector, which is to be built in a motor and which can inform an outside worker that the main circuit of the motor is cut off due to operation of itself, a motor protector, a submerged pump device, and a manhole pu...  
JP3907138B2
To prevent the change of the mixing ratio of liquid caused by interference of pressure between pumps. A double-speed rotating time function is input from a keyboard by an operator and stored (S1). When a motor is rotated (S2), whether th...  
JP3909076B2
To provide a fire engine which needs only the necessary number of signal lines, does not require continuous operation of a signal generator, and quickly adjusts a rotational speed of an engine for driving a pump for discharging a fire fi...  
JP2007016750A
To provide a pump capable of being stably started without exerting shaft thrust on a rotor at starting and causing the problem that a bearing is damaged by the shaft thrust at starting.The pump comprises a thrust balancing mechanism 19. ...  
JP3906096B2
To perform drainage pump operation realizing the curtailment of the amount of river discharge to the overflow discharge in rainy weather simultaneously with ensuring the safety of rainwater drainage. Under the condition that the measured...  
JP3897931B2
To provide a canned motor pump which can watch the proceeding condition of the bearings easily and securely by using a detecting method electrically, in a canned motor pump in which bearings are provided at both sides at the impeller sid...  
JP2006348877A
To provide a lighter device for easily and reliably supplying dry air to an on-vehicle pump such as a magnet pump which transfers low temperature fluid without occupying a large space, and to provide a dry air supply method using the sam...  
JP2006342681A
To provide a technology for executing pulsation analysis of a centrifugal rotating machine.The pressure pulsation analyzer 100 is equipped with a design condition input part 102 for inputting a set condition of a physical model containin...  
JP3892252B2
To provide an information apparatus provided with mutual interlock control function between information apparatuses by means of which such countermeasures as stopping of the upstream side manhole pump operation in the event of an abnorma...  
JP2006336560A
To facilitate assembly and wiring work, simplify a control circuit, and reduce cost of a device for operating two submerged pumps automatically and alternately.Two submerged pumps including the No. 1 pump P1 and the No. 2 pump P2 are alt...  
JP2006333779A
To provide a filtering device keeping the priming water level of a pump even if the pump is stopped by service interruption or the like, and pumping up water in an aquarium and returning the water to the aquarium without requiring the su...  
JP2006316652A
To efficiently cool a stator and reduce thrust propulsion force acting on a rotor and an impeller in a direction reverse to a fluid flow-in direction.Since this invented water pump 10 can regulate flow F of fluid from a pump chamber 42 t...  
JP3882069B2
To provide a technique for easily determining the failure of a pump for an artificial heart, which is desired in view of the fact that the pump, particularly of the type embedded into the body, when a patient using it is in bad health, d...  
JP3883382B2
To provide a water supply device capable of continuing operation while preventing no-discharge operation of a pump. This water supply device provided with the pump 3 and an inverter 2 for supplying electric power to the pump 3 and contro...  
JP2006307859A
To improve an impeller of pump so that a centrifugal pump can be used with a capacity bigger than that of optimal operation reference point, and without a risk damaging a shaft seal device or the like.The centrifugal pump, comprising a p...  
JP2006307682A
To provide a pump device that measures a flow rate or pressure in an operational status of a pump without using a flowmeter or a manometer to utilize them for an operation control of the pump.The pump device comprises a pump 11, a variab...  
JP2006307727A
To provide a vertical shaft pump, early starting pumping, and improving emergency response in rapid inflow of a large amount of water.In the vertical shaft pump 41, a suction port 6 is formed below an impeller 4, a delivery pipe 8 for de...  
JP3875372B2
To reduce the load of an operator, for example, by facilitating monitoring, preventing tripping on activation, automating starting operation, preventing damage when a reactor recirculation internal pump stops, and at the same time secure...  
JP2006299939A
To provide a water supply device having reliable high empty operation prevention function without spending surplus cost.The water supply device includes a pump 10, an inverter 14 variably controlling a drive motor of the pump 10. Also, t...  
JP2006304488A
To provide an induction motor suitable for driving a liquid hydrogen pump.A resistance is increased by reducing a cross section of a squirrel-cage rotor or using a material having a large resistance for the squirrel-cage rotor. Since a t...  
JP2006291938A
To suppress the occurrence of vibration by eliminating the unbalance of a fluid force produced when an impeller is rotated in a fluid by a simple structure.Three projected parts 61 for supporting bolts are formed, at equal intervals, on ...  
JP2006291900A
To prevent the occurrence of hunting in a preceding stand-by type vertical shaft pump.The preceding stand-by type vertical shaft pump 1 comprises a main air supply pipe 16 and an auxiliary air supply pipe 17. The main air supply pipe 16 ...  
JP3869625B2
To provide a pump device capable of reducing a thrust directional load of a rotor output shaft of a motor at suction time and self-priming process time. In this pump device having the motor 4 as a driving source and an impeller 1 being r...  
JP2006283739A
To provide a pump installation automatically operating alternately two or more submerged pumps by an inexpensive and simple structure with the number of float switches minimized.The first submerged pump 1 has the first float switch 10 fo...  
JP2006283597A
To stably prevent an electric pump device from being clogged with foreign matter without changing the pump displacement as much as possible.When the foreign matter is detected by a foreign matter detecting means, a pump controller 10 per...  
JP2006274819A
To provide a submerged pump reduced in size to reduce an installation space and enabling the reduction of damages and erroneous operations.In this submerged pump, electrode parts 11 and 12 for level detection are fitted to a vertically e...  
JP2006266191A
To provide a method for operating a vertical shaft pump preventing the suction of air from a suction port and the generation of an air sucking swirl and capable of lowering a pumping shut-off water level as compared with a conventional m...  
JP2006258033A
To avoid the problem when being rotated (idly rotated) in a state without containing liquid at all in a pump chamber.A rotating speed of an electric motor is detected (Step A3), and when the detected rotating speed of the electric motor ...  
JP3857563B2
To supply cleaning fluid at sufficient delivery pressure and delivery rate using a small pump device to first and second jet nozzles disposed on the right and left sides of a vehicle corresponding to head lamps disposed on the right and ...  
JP2006250018A
To provide an inexpensive, compact pump without requiring installation of an accumulator and to provide a liquid supply device provided with the pump.This pump has a pump part 1 incorporating an impeller 2 for absorbing and discharging l...  
JP2006250004A
To provide a collective pump device capable of stably maintaining its overall operation by controlling the pumping and no-load running of each of pump devices according to an inflow amount to stabilize a water level in a water storage pi...  
JP2006250071A
To provide a storage pump and a method of operating the storage pump capable of continuously performing smooth pre-waiting operation by reducing the vibration of the pump resulting from the suction of air when a water level is low.This s...  
JP3853255B2
To provide a hydraulic drive fan cooler which assures high reliability and high durability at a low cost. The hydraulic drive cooling fan unit has a cooling fan 16 for creating a cooling wind for cooling an engine 2, a hydraulic motor 17...  
JP3849734B2
To lengthen the life of a well by minimizing fluctuations in the water level of the well. The daily average amount of water distribution is set on the basis of prediction of demand for water and normally variable speed intake pumps P1, P...  
JP2006234075A
To provide a thrust bearing structure for a fluid compressor capable of canceling thrust force without requiring a special device, and capable of improving reliability.This structure is provided with a balance chamber 24 formed in a hous...  
JP2006233865A
To provide an energy-saving lifting pump device and its operating method, for securing an optimum pump operational status, in contradictory pump specifications of high lift and low lift before and after providing siphonage.A plurality of...  
JP2006233793A
To provide a liquid supply device capable of reducing vibration and noise of a pump.This liquid supply device has at least a pair of pumps constituted by pump parts 13, 14 incorporating an impeller for absorbing and discharging liquid an...  
JP2006217957A
To provide a fire engine which needs only the necessary number of signal lines, does not require continuous operation of a signal generator, and quickly adjusts a rotational speed of an engine for driving a pump for discharging a fire fi...  
JP2006220022A
To provide a pump capable of reducing heat generation when a motor generates heat.A current detection means 9 detecting a value of current carried to the motor 4 and a drive circuit 2 having a switching function turning on and off electr...  
JP3840620B2
To automatically control the second auxiliary pump by the vertical movement of a float-lifted/lowered level switch in a breeding device when an axial flow pump used therein for breeding various live fishes in a breeding tank becomes out ...  
JP2006200132A
To provide a dredging device capable of efficient dredging in response to an alluvium state of a sand pocket.A plurality of dredging pumps 8 are suspended in a sedimentary sand section 3 of the sea bottom from a pier 7 arranged in a sand...  
JP2006194185A
To provide a high pump head operation control method and a high pump head operation control system for a water feed system driven by a various voltage and a various frequency power source controlled by delivery pressure constant control ...  
JP2006194186A
To provide a large flow rate operation control method and a large flow rate operation control system capable of performing operation with room in a capacity of a pump and solving a problem of lack of the flow rate of the pump without cha...  
JP3827911B2
To ensure drainage even when a pump flow passage is not fully filled with water. A pump flow passage 20 is connected to an intake water tank 10 and a horizontal pump P is installed in the passage 20, whereby water in the tank 10 is sucke...  
JP2006183496A
To supply fluid without shortening the pump life and fluctuation of a delivery pressure in supplying the fluid by combining a pump for performing variable-speed operation and a pump for performing constant velocity operation.When pumps 3...  
JP2006177157A
To provide an automatic water supply device capable of constructing a feed water pump with different powering characteristics by changing the operation specification of a motor for driving the pump.The automatic water supply device is pr...  
JP2006161791A
To provide a water level control device for a plumbing tank capable of preventing accidents due to abnormality in a circuit inside a water level detecting device in advance.The water level control device is equipped with the water level ...  
JP2006164750A
To allow a fuel cell system to release a lock in impeller freezing with less amount of heat.A hydrogen circulation pump 21 comprises a pump 51 having an impeller 69, rotation of which transfers hydrogen from a hydrogen tank and exhausted...  
JP3814635B2
To provide a submersible motor pump having the convenient and, highly reliable function of automatically starting and stopping and its automatic starting and stopping method. The submersible motor pump has a temperature sensor 48 to sens...  
JP3816198B2
To provide a power system for driving a nuclear reactor coolant recirculation pump consisting of a simplified structure by reducing the number of units of a static type variable frequency supply device ASD at ABWR. At least one of normal...  

Matches 751 - 800 out of 3,487