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Patent Searching and Data


Matches 751 - 800 out of 1,887

Document Document Title
JPH08338386A
PURPOSE: To obtain a screw compressor which can reduce a noise depending on a discharge pulsation securely. CONSTITUTION: In a screw compressor 1 in which a pair of screw form rotors 3 and 4 are rotated in a casing 2, and a fluid sucked ...  
JP2564588B2  
JPH08334096A
PURPOSE: To prevent reduction in compression capacity by a muffler without exerting influence on a compression space even if a part of compressed refrigerant gas remains in the muffler by arranging a noise reducing mechanism (the muffler...  
JPH08334095A
PURPOSE: To enhance a noise eliminating effect by a muffler without enlarging a compressor itself. CONSTITUTION: A motor driven element 3 and a rotary compressing element 5 to be driven by the motor driven element 3 are housed in a seale...  
JP2562844B2  
JPH08326681A
To supply a micro quantity of fluid flow substantially without pulsation by comparing a flow signal related to flow generated by a pump, with a reference flow signal, and adjusting load to the pump according to a difference signal. Flow ...  
JPH08326678A
PURPOSE: To balance the static weight of the whole of a compressor in the installing condition of an external attached device so as to reduce vibration and noise at the time of operation by applying a load by which the static weight can ...  
JPH08326702A
PURPOSE: To prevent permanent compression strain in an elastic body from remaining by equally distributing the stress applied to the elastic body of an accumulator by an operating diaphragm. CONSTITUTION: An accumulator 50 divides the ro...  
JP2559414B2  
JPH08319937A
PURPOSE: To reduce the occurrence of pulsation during a no-load work by a hydraulic pump and to execute a hydraulic work during a load work without any trouble by a method wherein an adjusting valve for reducing the occurrence of pulsati...  
JPH08312525A
PURPOSE: To provide a hydraulic pulsation absorber simple in structure and capable of reducing cost. CONSTITUTION: A storage 6 communicated to a hydraulic pressure flow passage 5 is provided in a discharge port block 3 of a hydraulic pum...  
JP2555318B2  
JP2556039B2  
JPH08303353A
PURPOSE: To reduce delivery pressure changes of a fixed displacement pump despite of a simple and inexpensive structure, by amplifying output signals of a filter circuit which passes only frequency signal components of the delivery press...  
JP2552654B2  
JPH08296788A
PURPOSE: To surely fix a branch hose to reduce the pulsation of a hydraulic pump, reduce the cost of the operation for fixing the branch hose and improve operability. CONSTITUTION: The tip sides of respective flexible hoses 14 are fixed ...  
JPH08286767A
PURPOSE: To provide a liquid chemicals injecting quantity controller improved in a pulsation response to set quantity and suitable for process control. CONSTITUTION: A first timer 100 gives the notice of first time width in accordance wi...  
JP2515639Y2  
JPH08284809A
To provide a pumping system capable of freely adjusting constant flow. This pumping system is composed of pumping units P1-Pn connected to n tanks by unidirectional valves V1-n; a collecting head CH receiving fluids from the pumping unit...  
JP2515031Y2  
JP2514019Y2  
JPH08261141A
PURPOSE: To prevent increasing vibration and noise according to increasing power even in the case of attaing increasing power of an oil hydraulic pump, by providing pistons, slidably synchronized with a delivery pressure respectively of ...  
JP2512178Y2  
JPH08246809A
PURPOSE: To replace water supply in a water supply system with other water supply even under the state that a water supply pump driving turbine looses driving steam. CONSTITUTION: A booster pump 5a and a water supply pump 6a are arranged...  
JP2535425B2  
JP2532046B2
PURPOSE: To obtain simple detergent feeders that can constantly add an accurate specified volume of liquid detergent to a washing solution. CONSTITUTION: A detergent feeder comprising a detergent feed passage 30 equipped with a feed pump...  
JPH08232903A
To provide a noise reducer for effectively controlling the propagation noises of a fluid even when operated under wide pressure, speed and displacement volume. A noise reducer 34 is provided for reducing the propagation noises of a fluid...  
JPH08232834A
PURPOSE: To reduce Reynolds-number at a section of a cutout groove and suppress spout together with cavitation by forming a plurality of grooves extending in an spouting direction on bottoms of substantially triangular bilateral grooves ...  
JPH08219363A
PURPOSE: To heighten pulsation absorbing effect by always obtaining diaphragm reaction corresponding to fed liquid pressure in order to absorb pulsation in a diaphragm type pulsation absorber making use of air pressure. CONSTITUTION: A p...  
JPH08219081A
PURPOSE: To improve self-priming liquid suction pump head and prevent the pulsation of liquid in a liquid suction hose by providing a check valve allowing the unidirectional flow of liquid from the liquid suction hose to a liquid storage...  
JP2519611B2
PURPOSE: To prevent a crankshaft from being long sized and to reduce a bending stress or twisting stress exerted on the crankshaft by shifting the central positions of respective suction ports and discharge ports arranged in a transverse...  
JPH08193571A
PURPOSE: To reduce pulsation without bringing about cost-up or dropping the efficiency. CONSTITUTION: A hopper 1 is equipped with a pair of concrete cylinders 2L, 2R which are furnished with suction/discharge ports 3L, 3R, and a swing va...  
JP2505279Y2  
JPH08177723A
To reduce fluid-borne noise generated in a hydraulic system having a hydraulic pump. A fluid-borne noise attenuation device 34 is provided with a device detecting the pulsation of a flow generated by a hydraulic pump 12 and a device outp...  
JPH08177776A
PURPOSE: To reduce a noise (a flowing sound) of a fluid pulsation component by forming the passage area of a delivery port larger than the passage area of a pump passage in a Westco pump having an impeller which is arranged in a pump cas...  
JPH08170584A
PURPOSE: To eliminate pulsation of discharge rate in a simple structure, and to discharge a fixed quantity of liquid with high pressure in proportion to the rotating speed. CONSTITUTION: A quantitative discharge device 100 comprises two ...  
JPH08159016A
PURPOSE: To reduce a pulsation width regardless of fluctuation of discharging pressure in a pump as well as suppressing pulsation by discharging pressure of transfer liquid, and improve maintaining performance such as assembly and repair...  
JPH08145272A
PURPOSE: To perform proper absorption of a pressure wave by a method wherein inflow of a pressure wave to the interior of a water chamber is rendered rapid as a venturi effect is improved and contraction of a water chamber consisting of ...  
JP2500448Y2  
JP2503804B2  
JP2504001B2  
JPH08144941A
PURPOSE: To provide a device having simple constitution capable of reducing pulsation, regardless of the delivery port pressure level of a cam plate type axial piston pump, and requiring small space for installation in the pump itself. C...  
JPH08144963A
PURPOSE: To forcibly discharge bubbles formed due to cavitation. CONSTITUTION: Regarding the liquefied gas pump device where a pump chamber 40 with an inlet 34 and an outlet 52 is formed out of a piston 22 and a cylinder 21 to give a rel...  
JPH08504916A
(57) The included pump cassette (12) containing a summary self-support capacity transfer type pump and which can be thrown away, The solution pumping system (10) materialized as a related pump driver (14) containing the pump piston (36) ...  
JPH08121394A
PURPOSE: To reduce the occurrence of a pressure pulsation by a method wherein a plurality of holes are formed in the side wall surface of a flow passage between the vanes of a diffuser and intercommunicated through a bypass. CONSTITUTION...  
JPH08121276A
To provide a pressure pulse damper for vehicle fuel pumps that damps output fuel pressure pulses and reduces audible noise emanating from the pumps. A pressure pulse damper 80 is a hollowed thin-wall tube pinched off and sealed at both e...  
JPH08121326A
PURPOSE: To further shorten a time for manufacture and assembly by reducing the increased pulsation of sucking pressure, reducing size and weight, and increasing durability. CONSTITUTION: The axes of two cylinders 2 incorporating a pisto...  
JPH08114177A
PURPOSE: To provide a nonpulsating pump having a pulsation regulating mechanism which is constituted to regulate pulsation fluctuated by a pump operation condition to a minimum as low as possible during operation and have simple structur...  
JPH08105388A
PURPOSE: To reduce the fluctuation in the discharge pressure of a displacement pump by detecting the discharge pressure of the fluid by a pressure gage provided on the downstream side of a discharge port of the displacement pump, and out...  
JPH0861252A
PURPOSE: To release a two-vane set of dual vanes in a V-shape during operation of a pump. CONSTITUTION: Vanes 1 and 1' contained in the slit 21 of a rotor 2 are formed in a two-vane set state. A width spreading-form recessed part 11 or r...  

Matches 751 - 800 out of 1,887