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Patent Searching and Data


Matches 901 - 950 out of 1,855

Document Document Title
JP3394661
To sufficiently reduce a fluid noise even when a large circulating flow is generated in a valve element bottom part by arranging an annular projection projecting in the moving direction of a valve element in a circumferential outer edge ...  
JP3394928
To provide a check valve causing no noise due to the vibration. Generation of vibration when opening a valve can be prevented by giving the moving resistance by the work of an air damper to a valve element. Considering this point of a ch...  
JP2003028312
To provided a valve element for a butterfly valve capable of minimizing the damage of piping in a downstream side, even when bubbles by cavitationis generated at the time of passing of fluid.A platy swirl flow inducing means 15 (15a to 1...  
JP2003014148
To provide a relief valve which allows even a hydraulic device obtaining the rotation power from a hydraulic motor to continuously operate over several nights and days by improving a valve structure so as not to generate frictional heati...  
JP3388248
PURPOSE: To make the resistance mechanism of a water-hammer preventing valve closing portion inoperative when an excessive operating force is applied so as to prevent a valve mechanism from being broken by reducing the breaking stress of...  
JP2003004153
To prevent the failure, degradation, and the like of a check valve, a flowing water detector, piping, and the like based on water hammering at the start and stop of a pump.A valve element 15a for opening/closing a center opening part 16a...  
JP2003003528
To provide a compact and inexpensive composite flow regulating valve that is suitable to mount to a water pipe, in which an amount of water passing through extremely fluctuates, as a flow regulating valve which is provided to a water tra...  
JP2003004160
To suppress the generation of noise in the passing of a fluid such as a refrigerant in a motor-operated valve.This motor-operated valve is provided with a valve body 80 for adjusting the passing flow by a valve element 50 contacting and ...  
JP2003003911
To restrict columnar resonance generated in negative pressure air current passing piping 15a due to resonance of a solenoid 24 of a negative pressure generating valve device with the piping 15a when an exhaust recirculation valve part 8 ...  
JP2002357283
To solve the problem that the structure of conventional water hammer preventing devices is complicated since it is composed of bellows made of rubber members, thereby affecting the increase in the size and cost of the device. When an inc...  
JP3378335
PURPOSE: To restrain a valve from generating noise during its operation by deflectively-opening a tongue part in a condition where twisting is applied by the flowing action of the air, and lowering it to return to the closing position of...  
JP2002349737
To provide an air valve that can prevent a malfunction of a valve element by suppressing an adverse effect on a float of an inflow of bubbles in a valve casing and suppressing generation of splash and dust scatter. The air valve comprise...  
JP2002349721
To provide a structurally simple butterfly valve that permits determination of a flow rate when a small quantity of water (fluid) is caused to flow, for example, in a watering operation for a downstream side of piping. An outer circumfer...  
JP2002349735
To provide an air valve that can prevent external leakage of sanitary sewage and the like by reducing the frequency of opening and closing of a valve element and suppressing splash and dust scatter while maintaining an appreciable exhaus...  
JP2002349439
To reduce vibration and noise generated by bump contact between a valve and a valve plate of a compressor. A suction valve allowing a refrigerant of low pressure to flow in; a valve plate having a suction port connected to the suction va...  
JP2002333080
To provide a flowing water detecting device capable of preventing the failure, malfunction and the like on the basis of water hammer in driving a pump and the like.An opening/closing valve 18 for opening and closing a flowing water passa...  
JP2002327857
To prevent noise due to repeated overshooting and undershooting in blocking a pilot hole of a diaphragm valve with a valve element fixed to a plunger in a flow passage closing operation, wherein a phenomenon (overshoot) such that a seat ...  
JP2002323927
To disclose a method related to a flow rate control valve used for the fuel injection device of an internal combustion engine.A valve, i.e., a ball inverting orifice imposes 1st flow rate limitation on a substance which flows through the...  
JP2002323273
To provide an expansion valve and an air conditioner that have a small amount for pressure loss, and can prevent noise from being generated.In the expansion valve 100, noise is reduced by the functions of a porous body 22 at the upstream...  
JP2002310309
To provide a spool valve for maintaining the smooth flow of a fluid while properly and easily setting the positional relationship of a spool relative to a sleeve.The spool valve comprises a first communication port 4d opening to a cylind...  
JP3358428
To provide a pneumatic regulator which can be mounted on an end cap of a pneumatic tool and reduces exhaust sound and reaction which are generated when an air hose is removed. A piston 5 and a poppet valve holder 6 are arranged in opposi...  
JP2002295702
To effectively prevent the occurrence of abnormal sound caused by the vibration of a valve element in opening a valve.In a spring balance type valve, a helical compression spring 20 is stored in a spring storing chamber 34 of a spring st...  
JP2002285596
To provide a spout capable of suppressing an impulsive sound, caused by a water hammer, while eliminating occurrence of water leakage.This spout is provided with a valve seat (6a) which is formed in a main body (1) so as to partition a p...  
JP2002286161
To provide a hot and cold water mixing cock preventing pulsation of a control valve element, and capable of providing a stable discharging water temperature.A damper mechanism is arranged by fluid resistance by going in and out on the in...  
JP2002286158
To provide an electromagnetic stop cock capable of surely operating and preventing occurrence of a water hammer.A diaphragm 32 is provided on a pressure receiving part of a valve shaft 2 having a valve seat packing 6 opening and closing ...  
JP2002286153
To provide a solenoid valve capable of easily changing frequency of propagating pressure pulsation without separately providing a tank to prevent propagation of pressure pulsation caused by turning on and off a solenoid valve.A cylindric...  
JP2002276850
To provide a single lever type combination faucet capable of positively preventing a water hammer and suppressing flow rate fluctuation by a simple composition.In the single lever combination faucet, a valve unit 3 is provided built in w...  
JP2002276851
To provide a refrigerant control valve with a charge port preventing an eddy current of refrigerant inside the valve and noise generated by the eddy current.In the refrigerant control valve with the charge port, the charge port is screwe...  
JP2002267043
To provide an underwater water release valve which is provided on a downstream end of a water conduit pipe and reduces the vibration and noise generated during the underwater water release.In this underwater water release valve in which ...  
JP2002267032
To provide a ball check valve which is very simple in structure of a valve body, easy in manufacture, small in parts number, easy in disassembly/ assembly, and excellent in fluid back-flow preventing performance.An inflow port 6 opened d...  
JP2002256601
To further improve a top for controlling a flow rate capable of controlling the maximum quantity of water so that the quantity of water larger than a certain extent does not flow out even when a faucet is fully opened unconsciously.In th...  
JP2002250452
To provide a diaphragm valve which suppresses clogging of due to impurities such as dust, in a breed hole and surely carries out the operation of an opening and a closing action.This diaphragm valve 10 is equipped with a casing 20 with a...  
JP3344283
To prevent the occurrence of cavitation when a construction machine is stopped. A counterbalance valve 20 comprises a body 21; a spool 22 inserted in a spool hole 25; feed and discharge passages 29 and 30 connected to a pump 26 or tank 2...  
JP3343301
PURPOSE: To provide a flow regulating valve facilitating assembly further to decrease generating a noise, by integrally forming a valve element guide and a shaft guide. CONSTITUTION: In front of a shaft guide 5, a valve element guide 9 a...  
JP2002235969
To provide an air conditioner, in which a dehumidification operation can be performed in a reduced noise for a long period of time.A use-side heat exchanger constituting a refrigerating cycle is divided thermally in a 1st heat exchanger ...  
JP2002235970
To provide a high quality air conditioner, in which a dry valve for dehumidification operation improved in productivity is used.A use-side heat exchanger constituting a refrigerating cycle is divided thermally in a 1st heat exchanger and...  
JP2002235719
To adjustably move a substance between spaces divided through a partition wall without allowing the substance inside a partition chamber to flow at a time toward the outside, without completely releasing a connection mechanism between a ...  
JP2002228041
To prevent generation of a water hammering by a rapid stop of water flow resulting from rapid rotation of a cylinder valve element of a valve which includes an opening for passing water provided on the cylinder valve element of a cylindr...  
JP2002228026
To provide a check valve for liquid capable of slowly opening and closing valve for not generating vibration (noises) even if a shock flow such as a water hammering phenomenon happens.An oil accumulation chamber 15 increasing and decreas...  
JP2002213623
To provide a butterfly valve with built-in auxiliary valve which can easily control flow in a small opening region of both the valve elements, while avoiding generation of cavitation apprehended in the small opening region of the main/au...  
JP2002215243
To obtain a stable small flow rate even when disturbance is generated in a flow and to execute stable valve opening/closing action without generating a water hammer.When the water pressure P4 of an outflow room 24 is a prescribed value a...  
JP2002213644
To provide a faucet, equipped with a check valve having a water hammer relaxing mechanism capable of reducing water hammer noises generated, when preventing the feed of a back-flowing water onto the upstream side.A valve seat member 11, ...  
JP2002210394
To adjust an amount of water of a nozzle capable of changing an angle of water-discharge angle.The water-saving valve for variable nozzle has an annular flange capable of being clamped between an inner end surface of a connection cylinde...  
JP2002206821
To provide a solenoid valve having a throttling mechanism showing a superior silent characteristic and a superior anti-stain characteristic in a throttling passage.A helical groove 17 is formed at an inner circumferential surface of a va...  
JP2002202060
To provide a compressor capable of absorbing noise and vibration generated by a pulsation phenomenon of fluid delivered under high pressure.This compressor is composed of a valve seat 6 for respectively forming an inflow port 2 in which ...  
JP2002195452
To reduce a pressure loss of a float valve.In a change-over valve for alternately making the certain amount of service water flow to two output ports provided to a valve body using a water pressure supplied from a water pipe, the float v...  
JP2002195421
To provide an eccentric butterfly valve causing little cavitation at a valve contraction flow section, suppressing noise, reducing the change quantity of the Cv value per shift quantity of valve opening, improving controllability, having...  
JP2002188735
To prevent a valve equipped with an air-entraining function capable of preventing the generation of a cavitation at the lower end of a door body and inhibiting the generation of vibration and noise.In the valve, the door body 16 disposed...  
JP2002188793
To arrange an air vent valve for discharging air flowing into a trap at a position free from the influence of an abnormal pressure generated in a primary side of piping and without receiving the influence of the installation of a protect...  
JP2002181230
To compactly attach various kinds of valves and a water hammer preventer in a narrow space by combining both.A buffer chamber 4 is formed of a main body 1 and a lid member 2. A valve unit 7 is slidably arranged via coil springs 8, 9 in t...  

Matches 901 - 950 out of 1,855