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Patent Searching and Data


Matches 801 - 850 out of 1,520

Document Document Title
JPH02118191U  
JPH02238199A
PURPOSE: To improve the productivity by injection moulding an open impeller of blades and a hub having a diagonal surface of thermoplastic synthetic resin, and heating ranges from the root of the blades to their tip for softening and ben...  
JPH02502773A  
JPH02215997A
PURPOSE: To facilitate mold manufacture and mold removal after casting in opening the front and rear of a blade by joining those of wheel and blade, solidly formed around a rotational axis, together with a hub structure separately formed...  
JPH02207194A
PURPOSE: To prevent the problem of the conventional noise generation when a blast element is rotated across the generated flow of a fluid by rotating stream generating plates with surfaces moving the fluid only by the sticking phenomenon...  
JPH02207193A
PURPOSE: To improve blast efficiency by arranging a circular blade at the air intake port of a bypass passage so that the reverse air stream at the time of a low flow is guided to the bypass passage and the air stream at the time of a hi...  
JPH02191900A
PURPOSE: To prevent a sound absorbing material from wearing a deformation by connecting a pipe-shaped case to a ventilation port, mounting the pipe-shaped sound absorbing material of heat resisting fiber into this case and providing in t...  
JPH02188692A
PURPOSE: To maintain a sound absorbing action on gas holding water, etc., containing dissolved foreign matters for long periods of time by respectively loading a muffling material made up of closed cell bodies on the leeward of a mufflin...  
JPH02163496A
PURPOSE: To make a compression ratio larger and enhance a pumping speed as well as to reduce manufacturing cost by specifying a Knudsen number of inlet ports shown in a specified equation, and interconnecting these inlet ports to a venti...  
JPH0278796U  
JPH0276124U  
JPH02146292A
PURPOSE: To make a space as small as possible and improve cooling performance so as to obtain a ring air blower of high reliability by providing a discharge joint directed outward at the side wall of a discharge passage as well as an int...  
JPH0225039B2  
JPH02136597A
PURPOSE: To prevent the generation of turbulent flow of air by setting the thickness dimension on the suction side of a blade piece over the max. thickness dimension on the discharge side, having a prtiting line in molding which is gener...  
JPH0264791U  
JPH02112697A
PURPOSE: To improve the exhaust characteristics by forming a pointed part at each of the entry and exit part of a blade axially having both an inlet and an outlet. CONSTITUTION: Each disk 80 of a rotor 8 and a blade 81 formed around the ...  
JPH02108895A
PURPOSE: To obtain a compact and highly efficient turbo-vacuum pump by providing vortex flow vane wheels, formed of vanes disposed at the inner periphery of a rotor and a ventilation flue disposed at the outer periphery of a stator, in m...  
JPH0299796A
PURPOSE: To improve the compression efficiency by forming a groove-shaped guide passage on a partitioning member and forming a labyrinth seal on the side surface of the guide passage on the partitioning member. CONSTITUTION: When a vane ...  
JPH0299795A
PURPOSE: To improve the compression efficiency by allowing the fluid which inflows into a main flow passage to flow to the front edge by installing a guide member for guiding the fluid which flows from a suction inlet into the main flow ...  
JPH0299793A
PURPOSE: To improve the compression efficiency by securing the sufficient angular motion energy by projecting a plurality of blades onto a vane wheel and setting the inlet angle of the front edge and the outlet angle of the rear edge to ...  
JPH0299794A
PURPOSE: To increase the compression ratio and improve the compression efficiency by installing an annular guide member in a main flow passage and connecting the inner peripheral side surface and the outer peripheral side surface of the ...  
JPH0247478U  
JPH0291499A
PURPOSE: To facilitate the manufacture and the dimensional control of each part and reduce the dispersion of the performance by facing a stator to a circumferential flow impeller with a slit, and communicating, in series, circumferential...  
JPH0278794A
PURPOSE: To obtain a small-sized and high performance mixed flow type compressor by bending the outlet of a mixed flow impeller, or a diffuser in the radial direction near its inlet part, and providing a guide blade of a particular form ...  
JPH0278792A
PURPOSE: To obtain the optimum efficiency according to the specific speed by disposing one or more of first impellers having the flow angle on the impeller meridian plane inclined from the radial direction toward the lateral direction an...  
JPH0278787A
PURPOSE: To remove leakage loss and carry over loss and to improve efficiency by forming a continuous pass that reintroduces a working fluid to blades at the position of peripheral direction continuously separated from the rotation direc...  
JPH0278793A
PURPOSE: To improve the vibration characteristic, stability and pump performance by forming an impeller shaft and an electric motor rotor for driving said shaft into an integral rotating shaft, supporting the both end parts of the rotati...  
JPH0270995A
PURPOSE: To improve performance and to reduce the generation of noise by a method wherein by equalizing an angle of a blade warp line with a line segment, the warp height of the blade is set to a value higher than that of a special forma...  
JPH0228593U  
JPH0240097A
PURPOSE: To aim at reduction in a vortex loss by forming an air suction side end of a blade attached to an impeller body via a blade mounting plate into a form with curvature along an inlet air flow. CONSTITUTION: An impeller 10 is made ...  
JPH025236Y2  
JPH0223297A
PURPOSE: To provide high exhaust speed over the region from a molecular flow to viscous flow by providing a partition wall projecting from a stator in a ventilating path to afford communication between the leading end of the ventilating ...  
JPH0219694A
PURPOSE: To improve the pumping effect and to achieve high vacuum by supporting the opposite ends of a rotary shaft on radial magnetic bearings and supporting the section between the rotor of a motor and the final stage pump of a multi-s...  
JPH029993A
PURPOSE: To make improvements in compression efficiency by forming a spiral groove, which is gouged in a spiral direction toward an outlet port from an inlet port for guiding spiral motion of a fluid, in an inner circumferential surface ...  
JPH029992A
PURPOSE: To make improvements in driving efficiency by forming a slat in the point midway in a blade, blowing off a clearance flow to the backside of the blade, and breaking a boundary layer. CONSTITUTION: When an impeller is rotated, a ...  
JPH029994A
PURPOSE: To make improvements in heat exchanging efficiency between a fluid and cooling water by forming a lot of projections, being projected to a main passage, on an inner circumferential surface of a hollow annular part. CONSTITUTION:...  
JPH024999U  
JPH029996A
PURPOSE: To make improvements in pump performance by forming a front edge of a blade into a sharp form in a vortex compression pump at the upstream side but into an obtuse form in the said pump at the downstream side, respectively. CONST...  
JPH023099U  
JPH01174596U  
JPH01173494U  
JPH01173314U  
JPH01271698A
PURPOSE: To reduce noise emission by forming an area covering a ring channel tapering uniformly in an area of a discharge opening in a direction from an inner edge to an outer edge of the ring channel. CONSTITUTION: A ring channel 4 havi...  
JPH01267390A
PURPOSE: To miniaturize the drive source of, reduce the rotation mass of, and prevent the runout of the shaft of a vortex vacuum pump by integrally providing a disc-shaped rotor which is rotated at a high speed with a plurality of vanes ...  
JPH01148099U  
JPH01145998U  
JPH01145997U  
JPH01145996U  
JPH01108387U  
JPH01182598A
PURPOSE: To facilitate molding without lowering the characteristic of an impeller by setting a number of vanes in such a relation that the adjacent vanes are not mutually superposed in the axial direction, forming the inside and outside ...  

Matches 801 - 850 out of 1,520