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Patent Searching and Data


Matches 551 - 600 out of 1,504

Document Document Title
JPH1162898A
To improve boosting performance and reduce assembling man-hour by elongating main plate and side plate of an impeller by a prescribed length from the discharge side of a vane and making a rotary diffuser. A rotary diffuser 20 is constitu...  
JPH114559A
To provide a motor with a cooling fan, in which noises from the cooling fan is reduced, by making the cooling fan small. A motor body 1 and a cooling fan 5 are joined by a duct 3. A slantwise flowing fan is used as the cooling fan 5. An ...  
JPH10513524A
(57) Have a curved surface object (10) in which air circulates through the circumference of a summary, and the curved surface object Periphery (12), The low-pressure side (25) formed by one peripheral (12) side at the time of use, a circ...  
JPH10318183A
To provide a compact blower device incorporating two blowers, and incorporating a sound suppressing chamber for discharge gas and cooling gas. A blower device 1 has a box-like housing 10 in which two blowers are arranged up and down. An ...  
JPH10318194A
To provide a muffler which can effectively reduce a periodic high level noise caused by rotation of fins of a blower, and which can effectively reduce an exhaust noise from a supercharger used in particular in a marine engine. In a muffl...  
JPH10299690A
To improve freedom of layout inside an engine room and also improve sound absorbing effect by arranging an inlet side passage lead from a pump inlet to a pump flow passage inlet, an outlet side passage lead from a pump flow passage outle...  
JPH10511164A
(57) Summary book invention relates to the housing of the reproduction pump type compressor which consists of two housings half a copy of. The intensity of this kind of housing in the front wall (3) of each half a copy (1, 2) of housing,...  
JPH10288192A
To restrain leakage of gas in a state where temperature after driving for a long period of time is stabilized. A vortex groove 30 is provided on one surface of a ring plate 22 of this pump. The surface on which the vortex groove 30 is pr...  
JP2804621B2  
JPH10220390A
To reduce the size and the weight of a muffler by providing a blower having a blade with a reduced chamber by driving an electric motor by a frequency exceeding a commercial source frequency and a muffling passage chamber to absorb noise...  
JPH10205476A
To prevent reduction of a discharge flow rate at a high air temperature period, in a fuel pump for an internal combustion engine consisting of a regeneration pump. A given range from the starting end of a pump flow passage forms a fuel i...  
JPH10196586A
To provide a turvo vacuum pump which can be restarted with a small starting torque even when product is adhered to a fine gap between a rotor and a stator. A centrifugal compression pump stage 4a of a rotor 1 is arranged on the side of a...  
JP2776976B2  
JPH10184585A
To provide a compressor applied only to an effective compressor impeller but not applied to an ineffective impeller according to a guideline condition on the peripheral velocity of impellers in the compressor for gradually compressing pr...  
JP2761486B2  
JPH10131769A
To compress or expand gaseous fuel, and correctly control fuel pressure supplied to a turbo power generator, a flow rate, an exhaust temperature, and a current output by using a spiral flow compressor/turbine formed by integrating with a...  
JPH10122180A
To provide a smaller improved high electric power output machine by integrally forming a spiral flow compressor/turbine mounted with a spiral flow compressor impeller having plural blades of at least a single row with a permanent magnet ...  
JPH10111032A
To improve the efficiency of a cooling apparatus by a method wherein when introduced gas is a maximum mass flow, the gas is forced to reach final pressure in a main compression stage and then detour around a rear compression stage for su...  
JPH1089285A
To provide a vacuum pump to generate substantially high compression through the use of multistage pump operation related to a rotor. A modified vacuum pump comprises a rotor 9; and a stator body designed to rotate the rotor 9. The rotor ...  
JPH1061581A
To facilitate the positioning at the time of screwing an impeller to a shaft of a driving unit, and to improve the assembling workability by providing one or more holes or recessed parts in a disc-shaped impeller having a blade, which is...  
JP2563462Y2  
JPH1054395A
To provide a metal layer having an abrasion performance which is abraded easily by being brought into contact with other metal, and thereby, contract a clearance between a blade top end and an enclosing plate by forming an abrasion porou...  
JP2714245B2  
JP2705804B2  
JP2703055B2  
JP2696370B2  
JP2695025B2  
JP2695015B2  
JP2688580B2  
JPH09310694A
To provide a fuel pump whose fuel discharge quantity can be regulated through a simple method and its manufacturing method. The thickness of a housing 11 is set up so that in a state where an auxiliary housing 50 is not attached, the mag...  
JP2680136B2  
JPH09296782A
To reduce sliding frictional resistance sharply by arranging a guide means which consists of a guide groove for guiding rotation of a rotor and a guide ball which rolls in the guide groove, between the rotor and a cover or a housing. A g...  
JPH09242690A
To provide a low noise type vortex pump whose efficiency is improved. A double-blade impeller 30 is arranged between a casing 10 and a casing 20, and a channel formed of the casings 10, 20 comprises a pump channel X, a communicating pass...  
JPH09242689A
To provide a vortex pump whose delivery pressure is high while using a double-blade impeller for reducing a noise. A double-blade impeller 30 is rotatably arranged between a casing 10 and a casing 20. A channel formed of the casings 10, ...  
JPH09209997A
To provide an electric air pump with a low noise by which a noise itself generated from a pump is improved, without the increase of the property of the pump. An electric air pump is constituted by assembling a motor for rotating the fins...  
JPH09209980A
To eliminate noise in a wide frequency zone by providing a resonator having a circular extension chamber on a coaxial outer circumference of an intake port between the intake port and an air pump cover. A silencer is composed of an intak...  
JPH09195999A
To improve noise eliminating effect of an air pump, and also regulate a noise eliminating mechanism easily by installing a noise eliminating plate in which an opening port which is smaller than a suction port or a discharge port is drill...  
JPH09184499A
To surely reduce noise at an arbitrary position by providing a control means for outputting a control sound signal to a speaker in order to radiating predetermined control sound against sound caused by rotation of a fan body. An air-cond...  
JPH09158899A
To diminish ventilation resistance so as to improve a noise eliminating effect in a mixed flow fan with a noise eliminator formed by arranging on the upstream side of a mixed flow fan, a noise eliminating part consisting of a peripheral ...  
JPH09133097A
To reduce the manufacturing cost by arranging a supporting disc, which contacts with a shaft step part formed in a shaft end of a standard motor in the axial direction and which is guided on the shaft end in the radial direction, between...  
JPH09112484A
To excellently damp a noise by arranging at least notches having an almost heart shape in a plan view over its whole radial directional height on both side boundary surfaces in the circumferential direction of an interrupting part to sep...  
JPH09112483A
To install a regenerative pump type compressor by a shaft vertical to an installing surface by arranging an installing place of a housing end surface on the opposite side of a driving motor in the compressor where the driving motor is ar...  
JPH09112485A
To assemble a housing without requiring additional work to housing half parts by forming the housing of a regenerative pump type compressor out of a synthetic resin, and forming a driving shaft so as to be surrounded with a radial direct...  
JPH0988897A
To greatly reduce the vibration and noise to be propagated from a fan casing to an external cylinder by fitting the noise absorbing material to an inner surface of the external cylinder, providing the fan casing on the inner circumferent...  
JP2587506B2  
JPH0960600A
To drastically decrease noise by adjusting characteristics of frequency in absorbing sound. A fan outer cylinder 7 is provided outside an outer peripheral sound absorbing material 9 through a protrusion as a spacer, and an air layer is f...  
JP2585420B2  
JPH0949498A
To provide a multistage compressor having high efficiency in each stage, of small size and light weight, and generating a large flow amount. A compressor is provided with a plurality of impellers 14, 16 coaxially mounted in a rotationall...  
JPH0914187A
PURPOSE: To provide a multistage compressor to have high efficiency at each stage, reduce size and weight, and have a high flow rate and a high pressure. CONSTITUTION: A multistage compressor comprises a plurality of impellers mounted on...  
JP2569854B2  

Matches 551 - 600 out of 1,504