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Patent Searching and Data


Matches 401 - 450 out of 1,859

Document Document Title
WO/1982/004470
A device for attenuating noise of fluid in non-axisymmetric turbulent flow which comprises a conduit (34) and a plurality (12) of parallel aligned nested tubes in said conduit. The nested tubes are of varying cross-sectional size and hav...  
WO/1982/001236
A direct-flow valve comprises a casing consisting of hard elements connected to each other, and closing elements executed as toothed plates (10) pinched between neighbouring hard elements. Each toothed plate (10) is executed as teeth (11...  
WO/1981/001734
A valve for use under severe throttling conditions, includes a housing (12) with fluid inlet (14) and outlet (16) passages communicating with a chamber inside the housing. An abrasive resistant throttling tube (36) in fluid communication...  
JP2014074436
To prevent abnormal noise (impact noise) and hunting in the switching between opening and closing of a check valve without reducing responsiveness.A valve 50 is arranged to face a valve seat 14 in a valve chamber of a valve body 10, and ...  
JP2014066288
To reduce striking sound generated with chattering of a valve member.A resistive element 15C that can be slidably contacted with a coil part 15A is contacted with an outer peripheral side of the coil part 15A of a spring 15 acting as a r...  
JP2014059063
To provide a throttle valve device having a simple structure, allowed to be manufactured at low cost and having high quietness.In a throttle valve device (1) including a valve seat member (10) on which a valve seat part (10a) is formed a...  
JP2014034905
To suppress generation of foreign sounds due to vibration of a valve element or a valve element holding member in opening a relief valve.A land portion 54 sliding on an inner peripheral face of a valve hole 41 is set to be overlapped to ...  
JP2014031811
To provide a liquid supply control valve including a pressure absorption mechanism absorbing pressure fluctuation of a secondary side flow passage and having excellent durability.A liquid supply control valve has a flow passage block 10 ...  
JP2014029214
To provide a valve device capable of suppressing self-excited vibrations generated on a valve body, by a simple structure.A upstream channel 11 on a fluid inlet side and a downstream channel 12 on a fluid outlet side continues in directi...  
JP2014009745
To perform smooth flow control of water conduction in initial flooding.In a butterfly valve V interposed in piping of a water pipe or the like, a groove-shaped water conduction hole 12 in a valve opening direction is formed on an inner p...  
JP2014005924
To smoothly control a flow rate by reducing a rotational torque of a valve body during flooding.In a butterfly valve arranged in a pipeline such as a water service pipe, a tail section 10 having a water passing hole 11 extending in a val...  
JP2013254253
To provide a pressure regulating valve capable of preventing noise likely to generate due to a jet flow of fluid even if the jet flow is generated.A pressure regulating valve 1 includes a piston 4 and a poppet 5 which are provided in a p...  
JP2013245707
To provide a control device capable of reducing an unpleasant feeling imparted to a user by the occurrence of chattering of a valve element, in the control device of the electric flow control valve having the valve element for freely con...  
JP2013241958
To provide an electrically operated valve capable of controlling the flow rate at high accuracy at a small flow rate distributing time, and allowing the fluid to flow so that any pressure loss is generated as much as possible at a large ...  
JP2013234726
To reduce noise by restraining vibration or the like of a secondary joint pipe, by stabilizing a flow of a refrigerant in a valve port, in an electric valve for controlling a flow rate of the refrigerant by opening-closing the valve port...  
JP2013221543
To provide a stable valve open state without causing a hunting phenomenon in a check valve.A check valve includes, in a valve housing 10, an abutting seat part 38 separated from a diaphragm 26 in a state where a valve element 32 is locat...  
JP2013217568
To intend to enhance noise eliminating performance of an expansion valve mounted on a car air conditioner or others.A valve body 10 of an expansion valve 1 has a valve chamber 20 into which high pressure refrigerant is introduced, a valv...  
JP2013206176
To provide a pressure reduction valve for high voltage extraction for preventing the spring noise of a load spring, and for achieving miniaturization and weight reduction without changing the pressure characteristics of the pressure redu...  
JP2013200043
To provide a valve device capable of inhibiting self-excited vibrations occuring in a valve element, with a simple configuration.A valve device is configured to be continuos in a direction in which an upstream flow passage 11 on a fluid ...  
JP2013199971
To perform highly-accurate cushion control improved in reliability and certainty with a simple structure.A cushion control valve 1 for controlling cushioning of a hydraulic actuator 101 includes: a tubular valve body 2; a moving body 3 t...  
JP2013196053
To reduce a noise of a control valve.A control valve 1 for controlling a pressure of a fluid passing therethrough, includes a valve seat 20 having a seat part 22 through which the fluid passes, a poppet valve 60 which is inserted into th...  
JP2013190074
To provide a diaphragm valve capable of preventing a water hummer generated when closing a flow channel.This diaphragm valve includes a body pipe part (2), the first port (P1) projected along a direction orthogonal to an axial direction ...  
JP2013186762
To provide an air tool and an air compressor for reducing generation of a sound due to the vibration of the spring of a pressure-reducing valve.Disclosed is a pressure-reducing valve including: a housing having an air passage for communi...  
JP2013174257
To prevent the generation of uncomfortable operation noise generated by the self-exciting vibration of a moving member at an abrupt change of pressure, in an electromagnetic valve which controls a pressure difference between fluid pressu...  
JP2013174324
To efficiently reduce noise from a regulating valve for reducing a pressure of gas, and regulating a flow rate of the gas.There is provided a silencing and pressure-reducing device in which a cylindrical diffuser 2 having a large number ...  
JP2013170599
To enable vibration of a valve element to be properly restrained with a simple constitution, in an opening-closing valve.An opening-closing valve includes a valve element 22 forming a hollow shape and capable of opening-closing a communi...  
JP2013170633
To provide a check valve structure capable of surely absorbing water hammer, vibrations and pulsation, etc.A flexible expansion/contraction vibration-proof joint 2 having flange parts 1 at both ends in an axial direction and an expansion...  
JP2013155835
To prevent hunting of a valve member in a check valve.A valve member constituted of a valve part 43 and a piston part 44, is reciprocatably stored in a piston storage cylinder part 414 of a case 41, a damper chamber 418 being a substanti...  
JP2013155798
To provide a stop valve having a slow return function, with simple structure and superior productivity.A valve case 13 includes a first port 11, a second port 12, and a valve unit for closing communication between the fist and second por...  
JP2013148164
To provide a solenoid valve which can suppress operation sound in association with ON-OFF.A PCV 4 (one example of solenoid valve) forms a damper chamber α within a space filled by fuel in such a manner that a damper concave section 10 a...  
JP2013142506
To provide a simple and low-cost vibrationproof spring suitable for preventing the vibration of a working part of an expansion valve.An expansion valve 1 of a certain embodiment includes a first passage 13 that penetrates a body 2 and ha...  
JP2013139882
To provide a simplly-structured throttle valve apparatus which can be manufactured at low cost and has high quietness performance.A throttle valve apparatus (1) includes: a valve seat member (10) having a valve seat face (10a); and a val...  
JP2013133914
To provide a control valve capable of being correctly and smoothly operated without any abnormal noise or general noise caused by vibration of a valve element when the control valve is opened.In a control valve, a valve element 36 is gui...  
JP2013133842
To provide a swing type check valve capable of achieving both improvement in check valve function and prevention of chattering.A swing type check valve 1 includes a valve case 2 in which a flow path 3 extending from an inlet part 3a to a...  
JP2013119867
To prevent an increase in a pressure loss at a large opening degree while effectively suppressing cavitation.A butterfly valve includes, as basic constituent members, a cylindrical valve casing 1 functioning as a part of a flow passage, ...  
JP2013104439
To improve quietness by reducing pulsation of a refrigerant with a simple structure, in a dehumidification valve of an air conditioner.A plurality of throttle grooves 21 are formed in a valve seat portion 2b. During a dehumidification op...  
JP2013096496
To facilitate assembly and to effectively suppress vibration of a valve element while simplifying a structure, in a check valve including a valve housing in which a valve seat is provided while opening an inlet-side flow passage, the val...  
JP2013096497
To provide a check valve that can suppress vibration of a valve element while facilitating assembling and making the size smaller, the check valve including: a valve housing having a valve chamber formed inside to be always led to an out...  
JP2013087795
To provide a motor-operated valve which prevents chattering immediately after a main valve element is opened, shortens a control time for controlling the opening/closing of a main valve, and controls a flow rate finely.The motor-operated...  
JP2013083285
To provide a butterfly valve, in which cavitation can be effectively suppressed on the orifice side up to an opening of a medium degree, and which is easily manufactured.A semi-disc-like sub-valve element 5 having a large number of flow ...  
JP2013076443
To provide a flow path opening/closing device that can prevent water-stop failure of the flow path opening/closing device by preventing entry of a foreign substance into a constant flow rate valve, while an instantaneous flow rate of wat...  
JP2013072531
To provide a valve device that includes a valve support for supporting a valve element of opening and closing an orifice, and in which pressure loss of a refrigerant is reduced and noise generated when a fluid flows a periphery of the va...  
JP2013068368
To provide a compact valve device by reducing the dimension in the valve opening/closing direction, of a spring vibration isolator for preventing vibration of a valve element.In a valve body 30, a valve chest 35 and an orifice 32a are fo...  
JP2013032846
To provide a spool valve with reduced cavitation damage.The spool valve 10 includes a valve spool 22 having a circumferential-shaped control edge. The spool valve further includes a means 50 for applying an intermittently or continuously...  
JP2013029161
To provide a joint and a valve device having the same, for restricting a flow rate of fluid when the fluid flows in the inverse direction, though the flow rate of the fluid is not restricted when the fluid flows in the constant direction...  
JP2012251596
To provide a constant flow rate valve capable of reducing noise generated when controlling a flow rate of wastewater substantially constant.The constant flow rate valve 33 controlling the flow rate of the wastewater W5 flowing through a ...  
JP2012247060
To provide a check valve for a spray nozzle, which includes a valve housing having a pipe shape, a shielding body and a valve seat where the shielding body is disposed movably in a lengthwise direction of the valve housing having a pipe ...  
JP2012237365
To provide a pressure regulator that stably opens and closes a valve body to thereby reduce vibration or abnormal noise.The pressure regulator 10 includes: a casing 12 including a valve chamber 20 having an entrance 21 and an exit 28, an...  
JP2012233512
To provide a supply and discharge adjusting apparatus and a supply and discharge adjusting system that can adjust an operation pressure (exhaust pressure) in accordance with a use state.The supply and discharge adjusting apparatus 3 incl...  
JP2012233501
To provide a valve device that can suppress pulsation by taking measures against a generation source of the pulsation, without enlarging the physical size.At least one of a valve body 13 and a valve port end face 12b where a valve port 1...  

Matches 401 - 450 out of 1,859