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39results about How to "Reduce noise leakage" patented technology
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Construction machine
InactiveUS7828097B2Improve cooling efficiencyLittle influenceCoolant flow controlAir coolingEngineeringMechanical engineering
An object is to provide a construction machine containing an engine (30) and a heat exchanger (31) in a bonnet (14), adapted for easy cleaning of a side of the heat exchanger (31) toward a cooling fan.A space (29) into which a hand can be put is provided between a cooling fan 33 attached to the engine (30) and the heat exchanger (31) arranged so as to face to the cooling fan (33). A part covering a region from the cooling fan (33) to the heat exchanger (31) in the bonnet (14) from above and sides includes a separate cover (34). An opening part having a guard (36) is provided through a portion of the cover (34), the portion facing to the heat exchanger (31). The cover (34) is configured to be openable and closable. The cooling fan (33) is adapted to be of a discharge type. A plurality of the heat exchangers are arranged in a same plane.
Owner:YANMAR CO LTD
Portable engine operated machine
InactiveUS20060065216A1Spoil aesthetic appearanceImprove aesthetic appearanceAir coolingMachines/enginesInterior spaceEngineering
A portable engine generator, has a box-shaped case defining an internal space for holding an engine and an electric generator to be driven by the engine. The case is provided with carrying handles. The portable engine generator is provided with a cooling air passage through which fresh air as cooling air flows into the internal space while the engine is in operation. An inward depressed part is formed in a front cover of the case on the side of the internal space with respect to the carrying handles The carrying handles and the inward depressed part define the cooling air passage. The cooling air passage serves as a hand space into which human hand is inserted to grip the carrying handles.
Owner:HONDA MOTOR CO LTD
Portable engine operated machine
InactiveUS7146962B2Spoil aesthetic appearanceImprove aesthetic appearanceNon-fuel substance addition to fuelAir coolingInterior spacePortable engine
A portable engine generator has a box-shaped case defining an internal space for holding an engine and an electric generator to be driven by the engine. The case is provided with carrying handles. The portable engine generator is provided with a cooling air passage through which fresh air as cooling air flows into the internal space while the engine is in operation. An inward depressed part is formed in a front cover of the case on the side of the internal space with respect to the carrying handles. The carrying handles and the inward depressed part define the cooling air passage. The cooling air passage serves as a hand space into which human hand is inserted to grip the carrying handles.
Owner:HONDA MOTOR CO LTD
Air conditioning system with electrostatically atomizing function
InactiveUS7959717B2Efficient disseminationHigh degreeBurnersAir-treating devicesEngineeringAir conditioning
Owner:MATSUSHITA ELECTRIC WORKS LTD
Method and apparatus for reducing noise leakage from a cable modem
InactiveUS6888883B1Reduce noise leakageBroadband local area networksDuplex signal operationShunt DeviceModem device
Apparatus and methods are disclosed for reducing noise leakage on the upstream channel from a cable modem. Noise leakage from cable modems, such as from a persistently enabled amplifier or other components in the modem, can accumulate on an upstream channel and reduce the overall signal-to-noise ratio of signals sent to the headend. In order to significantly reduce such noise leakage and to provide termination of the cable plant in the modem when the modem is not transmitting data, a cable modem arranged to improve its isolation is disclosed. The modem contains an upstream transmitter having a control line on which the upstream transmitter can emit a control signal. The modem also includes a switch component capable of being enabled and disabled by the control signal on the control line. The control signal from the upstream transmitter to the switch component enables the switch component thereby allowing a data signal to be transmitted on an upstream channel. The switch component includes two switches. One switch is a series switch used to enable and disable the transmission of data. Another switch is a shunt for providing termination of the cable plant. The cable modem also includes an amplifier for amplifying the data signal from the upstream transmitter before being transmitted on the upstream channel.
Owner:CISCO TECH INC
Electronic apparatus
InactiveUS6870094B2Increase spacingReduce noise leakageRelieving strain on wire connectionCoupling for high frequencyEngineeringPrinted circuit board
An electronic apparatus is provided which causes less radiation noise leakage through an aperture with a shielding box in a compact size. The apparatus has a shielding box encasing a printed circuit board connected to a cable. The shielding box has a cable-regulating portion which seals the aperture of the shielding box for leading out the cable connected to the printed board and presses the cable against the bottom plate of the shielding box. Thereby the radiation noise caused by common-mode current in the cable is also reduced.
Owner:CANON KK
Indoor unit for base station separate air-conditioning device
InactiveCN101520212AReduce noise nuisanceImprove securityCompressorSpace heating and ventilation safety systemsEngineeringAir conditioning
The invention provides an indoor unit for a base station separate air-conditioning device. The indoor unit comprises a shell; the inside of the shell is provided with a fan blowing air toward the indoor and an indoor heat exchanger; the upper part of the shell is provided with an air inlet, and the air inlet is covered with a filter net; the indoor unit also comprises more than one compressor and a throttle mechanism; the compressor is arranged on one side of the indoor unit, and the indoor heat exchanger and the fan are arranged on the other side of the indoor unit, or the compressor is arranged on the lower part of the indoor unit, and the indoor heat exchanger and the fan are arranged on the upper part of the indoor unit; one end of the throttle mechanism is connected with an outdoor heat exchanger, while the other end is connected with the indoor heat exchanger; the indoor heat exchanger is whole type or separate type, and is inverse L-shaped; and the included angle between the long side edge and the short side edge of the indoor heat exchanger is alpha which is between 30 and 120 degrees. The indoor unit has the characteristics of low production cost, high safety degree, small volume, small overall size, flexible assembly and convenient operation.
Owner:GUANGDONG MIDEA ELECTRIC APPLIANCES CO LTD
Motor-driven compressor
InactiveUS20130323097A1Reduce noise leakageImprove cooling effectRotary/oscillating piston combinations for elastic fluidsAssociation with control/drive circuitsMotor driveMetallic materials
A motor-driven compressor includes a housing made of a metal material, a compression portion, an electric motor, and a cover. The compression portion and the electric motor are accommodated in the housing, and the cover is attached to the housing. The cover is formed by a plastic portion and a shield made of a metal material that intercepts electromagnetic noise. A motor drive circuit for driving the electric motor is accommodated in an accommodation space defined by the housing and the cover. An elastic sealing member is located between the housing and the cover. The shield includes an extended portion that extends toward the housing and is arranged inside the sealing member. The extended portion is in contact with the housing.
Owner:TOYOTA IND CORP
Car door structure and noise insulation sheet
InactiveCN1721649AImprove sound insulationReduce noiseDoor/window applicationsSealing arrangementsAcoustic boardElectrical and Electronics engineering
A car door structure comprises a door inner panel 11, an interior door trim 12 and a noise insulation sheet 20. The interior door trim 12 is installed in the interior side of the door inner panel 11. The noise insulation sheet 20 is provided between the door inner panel 11 and the door trim 12, where it is hung down from the upper side to the lower side of the door inner panel like a curtain. The noise insulation sheet 20 is fixed to either the door inner panel 11 or the door trim 12. The noise insulation sheet 20 is provided at about an upper half or a lower half of the door inner panel 11, or it is provided at a central part of the door inner panel 11 while dividing approximately into three sections in a vertical direction or a horizontal direction.
Owner:NISHIKAWA RUBBER
Connector
ActiveUS20180156995A1Increase freedomReduce noise leakageTwo pole connectionsCoupling contact membersMating connectionEngineering
A connector is mateable with and removable from a mating connector, which has an optical connector, along a mating direction. The connector is provided with a receptacle to be attached to a case and an adapter to be mounted on a circuit board located in the case. The adapter has an inner module to be connected to the optical connector and a cage which accommodates the inner module at least in part. One of the receptacle and the cage is provided with a contact portion which is in contact with a remaining one of the receptacle and the cage. The receptacle and the cage are electrically connected to each other through the contact portion without direct fixation between the receptacle and the cage.
Owner:JAPAN AVIATION ELECTRONICS IND LTD
Motor-driven compressor housing, cover, and seal
ActiveUS9343940B2Reduce noise leakageReduce manufacturing costAssociation with control/drive circuitsPositive displacement pump componentsDriver circuitMotor drive
A motor-driven compressor is provided that includes a housing made of a metal material, a compression portion, an electric motor, a cover made of a metal material, a motor drive circuit accommodated in an accommodation space defined by the housing and the cover, an elastic sealing member located between the housing and the cover, and an extended portion provided in at least one of the housing and the cover. The compression portion and the electric motor are accommodated in the housing. The cover is attached to the housing. The motor driver circuit drives the electric motor. The extended portion extends in a direction toward an opposing one of the housing and the cover and is arranged inside the sealing member. The extended portion includes an outer peripheral surface. The sealing member is arranged to be in close contact with the outer peripheral surface of the extended portion.
Owner:TOYOTA IND CORP
Air conditioning system with electrostatically atomizing function
InactiveUS20100133366A1Efficient disseminationHigh degreeBurnersAir-treating devicesVentilation ductWater particle
An air conditioning system with an electrostatically atomizing function includes an electrostatically atomizing unit and a ventilation duct which flows conditioned air. The electrostatically atomizing unit generates a mist of charged minute water particles. The electrostatically atomizing unit is provided with a discharge port which locates adjacent to an air outlet of the ventilation duct. The mist of the charged minute water particles flows into an airflow which is sent from the ventilation duct. The mist of the charged minute water particles effectively spreads to the space by the air flow without dissipating inside the ventilation duct.
Owner:MATSUSHITA ELECTRIC WORKS LTD
Bus door structure and sound insulating plate
InactiveCN1442326AImprove sound insulationReduce noiseEngine sealsVehicle sealing arrangementsEngineeringAcoustic board
A car door structure, which includes a door inner protection panel 11 , an inner door lining 12 and a sound insulation board 20 . The inner door liner 12 is installed inside the door inner panel 11 . The sound insulation panel 20 is provided between the door inner panel 11 and the door liner 12 , wherein the sound insulation panel hangs like a door curtain from the upper side of the door inner panel to the lower side thereof. The sound insulation panel 20 is fixed to both the door inner panel 11 and the door liner 12 . The sound insulation panel 20 is arranged on the upper half or the lower half of the door inner panel 11, or when the door inner panel 11 is divided into three parts in the vertical or horizontal direction, it is arranged on the door inner panel Middle part of 11.
Owner:NISHIKAWA RUBBER
Analog-to-digital converter
InactiveCN109560817AReduce noise leakageReduced output swingAnalogue conversionNegative feedbackDigital down converter
An embodiment of the invention provides an analog-to-digital converter. According to the analog-to-digital converter, a first output end of a multi-bit quantizer is connected with a second input end of a third integrator by means of a first delay circuit and a second digital-to-analog conversion unit sequentially, so as to form a first negative feedback circuit; and a second output end of the first multi-bit quantizer is connected with a second input end of a first integrator by means of a nonlinear dynamic element matching logical device and the first digital-to-analog conversion unit sequentially, so as to form a second negative feedback circuit. The analog-to-digital converter can feed back a quantization result of the quantizer to the inputs of the integrators in a segmented manner, and realizes second-order noise shaping through feeding back the least significant bit segment to the input of the digital-to-analog converter. The analog-to-digital converter can significantly reduce the output swing of the integrators and greatly relax the bandwidth and gain requirements of operational amplifier design. The analog-to-digital converter provided by the embodiment of the invention can meet the requirements of high precision and low power consumption at the same time.
Owner:UNIV OF SCI & TECH OF CHINA
Mute power supply
InactiveCN112360619AEffective absorptionEffective barrierAir coolingNon-rotating vibration suppressionDiesel generatorMechanical engineering
The invention discloses a mute power supply. The mute power supply comprises a base and a diesel generating set, wherein the upper end of the base is fixedly connected with a mounting frame, the innerside of the mounting frame is provided with a mounting plate, the diesel generating set is mounted on the mounting plate, the diesel generating set is connected with a fuel inlet pipe, a discharge outlet pipe and a wiring pipe, the fuel inlet pipe, the discharge outlet pipe and the wiring pipe penetrate through the lower portion of the mounting plate, a vibration reduction mechanism connected with the mounting plate is arranged on the base, an inner shell and an outer shell are fixedly mounted at the upper end of the mounting plate, the inner shell covers the outer side of the diesel generator set, the outer shell covers the outer side of the inner shell, and a partition plate fixedly connected with the outer shell is fixedly connected to the outer wall of the upper portion of the inner shell. According to the mute power supply, by arranging the vibration reduction mechanism, effective vibration reduction and silencing effects are achieved, meanwhile, noise leakage of air intake and exhaust is greatly reduced, effective sound absorption and noise reduction can be achieved, and the ultra-silence working effect is achieved.
Owner:西安芭蕾说艺术文化传媒有限公司
Air pump
ActiveUS20110280752A1Increase noise reduction effectHigh noise reduction effectPositive displacement pump componentsPiston pumpsEngineeringAir pump
There is provided an air pump in which vibration noise generated in a drive unit of the pump is suppressed from being transmitted to the outside through a suction passage. A casing (17) of the air pump has a suction port (26-12) extending from an outer peripheral surface to inner peripheral surface of the casing, a noise reduction wall (26-9) annularly formed on the outer peripheral surface of the casing such that the suction port opens in a region of the outer peripheral surface of the casing surrounded by the noise reduction wall, and a lid member closing the opening of the top of the noise reduction wall and cooperating with the noise reduction wall and the outer peripheral surface of the casing to define a noise reduction chamber (26-14) communicating with the suction port. The noise reduction wall has an elongated noise reduction passage (26-11) extending circumferentially in the noise reduction wall. One end of the noise reduction passage opens on the outer surface of the noise reduction wall. The other end of the noise reduction passage opens on the inner surface of the noise reduction wall.
Owner:NITTO KOHKI CO LTD
Connector
ActiveUS10018793B2Increase freedomReduce noise leakageTwo pole connectionsCoupling contact membersMating connectionOptical connectors
A connector is mateable with and removable from a mating connector, which has an optical connector, along a mating direction. The connector is provided with a receptacle to be attached to a case and an adapter to be mounted on a circuit board located in the case. The adapter has an inner module to be connected to the optical connector and a cage which accommodates the inner module at least in part. One of the receptacle and the cage is provided with a contact portion which is in contact with a remaining one of the receptacle and the cage. The receptacle and the cage are electrically connected to each other through the contact portion without direct fixation between the receptacle and the cage.
Owner:JAPAN AVIATION ELECTRONICS IND LTD
Air pump
ActiveUS8727753B2Improve noise reductionReduce noise leakagePositive displacement pump componentsPiston pumpsEngineeringNoise reduction
There is provided an air pump in which vibration noise generated in a drive unit of the pump is suppressed from being transmitted to the outside through a suction passage. A casing of the air pump has a suction port extending from an outer peripheral surface to inner peripheral surface of the casing, a noise reduction wall annularly formed on the outer peripheral surface of the casing such that the suction port opens in a region of the outer peripheral surface of the casing surrounded by the noise reduction wall, and a lid member closing the opening of the top of the noise reduction wall and cooperating with the noise reduction wall and the outer peripheral surface of the casing to define a noise reduction chamber communicating with the suction port. The noise reduction wall has an elongated noise reduction passage extending circumferentially in the noise reduction wall.
Owner:NITTO KOHKI CO LTD
Computer case protection and noise reduction device
InactiveCN110806786AReduce noiseAct as a guide to moveDigital processing power distributionStructural engineeringNoise reduction
The invention relates to the technical field of computers and particularly relates to a computer case protection and noise reduction device. The device comprises a case. A detachable side cover is arranged on one side of the case; a fan damping clamping assembly is arranged on one side in the case; a power supply damping assembly is arranged at the bottom end in the case; an air exhaust and noisereduction assembly is arranged at one end, close to the fan damping and clamping assembly, outside the case; noise reduction layers are arranged on the inner walls of the case and the side cover; fourdamping bases which are arranged in a rectangular mode are arranged at the bottom of the machine box. The air exhaust and noise reduction assembly comprises a rectangular air exhaust channel. The airexhaust channel is fixedly installed on the outer wall of the case, a plurality of vertical and detachable noise reduction layers are arranged in the air exhaust channel, the noise reduction layers are arranged at intervals, a power source and a fan in a computer can be subjected to independent noise reduction through the equipment, noise is reduced, and the comfort degree of a user is improved.
Owner:殷周平
Vehicle
ActiveUS20190143808A1Reduce noise leakageDischargingSilencing apparatusVehicle sub-unit featuresEngineeringCylinder block
A golf car includes an engine and a shroud that covers a cylinder body. The shroud communicates with a muffler cover, which covers a muffler. A silencer is provided at an outlet of the muffler. An elastic exhaust duct is connected to an exit end portion of the muffler cover. An undercover is located lower than the engine, and defines an underside of an engine room. The undercover includes an opening at a more rearward position than the muffler in a side view. The exhaust duct is routed above the undercover, includes a rearward end portion at the opening, and is fitted to the opening. Holders hold sound absorbing members on an inner circumferential surface of the exhaust duct.
Owner:YAMAHA MOTOR POWER PROD KK
Location detection device
InactiveUS20150062077A1Improve the blocking effectReduce noise leakageNon-linear opticsInput/output processes for data processingCapacitanceLocation detection
In a location detection device, a capacitive touch panel is disposed on a surface of a display screen of a display device. The location detection device includes a touch panel that includes a plurality of transparent electrodes arranged in mutually intersecting directions; a location detection unit that detects a touch location of an instruction body by selecting parts of the plurality of transparent electrodes and measuring a change in capacitance between the parts; and, a low impedance setting unit that, at a point in time when the location detection unit selects the parts of the transparent electrodes, puts remaining transparent electrodes into a low impedance state.
Owner:ALPINE ELECTRONICS INC
Second-order continuous-time SD analog-digital converter (ADC) adopting self noise coupling
ActiveCN107222216AReduce noise leakageEnhance the effect of noise shapingAnalogue conversionDigital down converterIntegrator
The invention discloses a second-order continuous-time SD analog-digital converter (ADC) adopting self noise coupling. After input continuous signals pass through a second-order filter loop, a least significant bit part and a most significant bit part are output, wherein the most significant bit part is input into the second-order filter loop; after being input into a self noise coupling loop, the least significant bit part is divided into two paths; after passing through a delay unit, one path is input into a digital subtraction circuit; the other path is directly input into the digital subtraction circuit; the two paths of signals pass through the digital subtraction circuit, and return to a second-stage integrator in the second-order filter loop through a first analog-digital converter; and, after passing through a digital filter in a digital noise shaping loop, the processed least significant bit part is subjected to digital addition with the most significant bit part through a digital adder in the digital noise shaping loop, so that discrete digital output signals are obtained. By means of the SD ADC, noise leakage due to mismatching of an analog filter and the digital filter is reduced; the noise shaping effect is improved; and thus, the signal-to-noise ratio of a system is obviously improved.
Owner:UNIV OF SCI & TECH OF CHINA
Computer apparatus capable of conveniently adjusting display screen
InactiveCN108508991ACompact structureEasy to useDigital processing power distributionEngineeringMuffler
The invention relates to a computer apparatus capable of conveniently adjusting a display screen. The computer apparatus comprises a case main body and the display screen communicating with the case main body; the case main body comprises a case inner shell, a top muffler plate and two side surface muffler plates; the top muffler plate is mounted on the upper surface of the case inner shell; the two side surface muffler plates are symmetrically mounted on the two sides of the case inner shell; the display screen comprises a display screen main body; a touch screen bar is mounted on the lower surface of the display screen main body; the touch screen bar is covered by a waterproof protective film layer; the touch screen bar is further provided with a moving contact piece; tension springs arearranged on the lower surface of the moving contact piece; the computer apparatus further comprises two electromagnetic coils; the electromagnetic coils are close to the two side surfaces of the display screen main body; the electromagnetic coils are located on a base; the base is fixedly connected with the electromagnetic coils; the electromagnetic coils consist of coil bodies and anti-radiationbars; and lifting rods are arranged in the joints of the anti-radiation bars relative to the base. Therefore, the height of the display screen can be adjusted and the noises of a host can be reduced.
Owner:HUNAN DEYI INTELLIGENT TECH CO LTD
Power transmission system
ActiveUS10608478B2InhibitionReduce noise leakageBatteries circuit arrangementsCharging stationsElectric power transmissionLow noise
A power transmission system transmits electric energy to a secondary resonator having a secondary resonator coil through an electromagnetic field of a predetermined frequency from a resonator having a resonator coil and reduces noise using two noise cancellation resonators with one predetermined frequency and its higher harmonic component set as noise reduction target frequency. The system includes, as two noise cancellation resonators, a first noise cancellation resonator including a first noise cancellation resonator coil and has a resonance frequency higher than the noise reduction target frequency by a first shift frequency determined according to a coupling degree between the resonator coil and first noise cancellation resonator coil and second noise cancellation resonator including a second noise cancellation resonator coil and has a resonance frequency lower than the noise reduction target frequency by a second shift frequency according to coupling degree between the resonator coil and second noise cancellation resonator coil.
Owner:EQUOS RES +1
Water-lubricated rubber alloy bearing device, friction self-excited vibration noise active suppression system and method
ActiveCN113417938BEnhanced inhibitory effectReduce noise leakageMechanical oscillations controlPropulsive elementsMetal rubberComposite material
The invention discloses a water-lubricated rubber alloy bearing device, a friction self-excited vibration noise active suppression system and a method. The water-lubricated rubber alloy bearing device includes a water-lubricated rubber alloy bearing and a bearing seat sleeved outside the water-lubricated rubber alloy bearing. It also includes a metal rubber sleeve. The metal rubber sleeve is arranged between the water-lubricated rubber alloy bearing and the bearing seat. One end of the metal rubber sleeve is provided with a driving mechanism for driving the deformation of the metal rubber sleeve to change the rigidity of the metal rubber sleeve. The invention adjusts the support stiffness by arranging a metal rubber sleeve between the water-lubricated rubber alloy bearing and the bearing seat, uses a driving mechanism to adjust the deformation and stiffness of the metal rubber sleeve, and monitors the state of the bearing in real time through a sensor, and collects bearing signals to form an active control strategy. Actively control the deformation of the metal rubber sleeve to adjust its support stiffness to the water-lubricated rubber alloy bearing, so as to achieve the function of actively suppressing the frictional self-excited vibration noise of the water-lubricated rubber alloy bearing from the source of the noise.
Owner:CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY +2
Multi-channel integrated MRI transmitter system for a magnetic resonance imaging device
ActiveUS20200326394A1High programmable flexibilityIncrease powerMeasurements using NMR imaging systemsMR - Magnetic resonanceSignal modulation
A multi-channel RF transmitter system including a magnetic resonance imaging device, a multi-channel RF coil array, a control computer receiving required parameters from a user, producing triggering and clock signals and synthesizing input data required for each channel of RF coil array according to imaging scenario to be realized, an interface control module producing basic band MRI signals according to data from the control computer, a signal modulator and control module for modulating MRI signals produced at the interface control module into radio frequency and distribution to channels, a power / data distribution module distributing the produced signals and required DC power, a RF power amplifier module converting digital signal coming from the power / data distribution module into analog signal, amplifying it and transmitting to members of the coil array, a feedback line for track and correction of any errors in RF signal transmitted to the coil array by the power amplifier module.
Owner:ASELSAN ELEKTRONIK SANAYI & TICARET ANONIM SIRKETI
Ofdma scheduling method for avoiding leakage at the mobile stations
ActiveCN102396279BReduce noise leakageReduce power consumptionEnergy efficient ICTNetwork traffic/resource managementCarrier signalMobile station
The present invention relates to scheduling of uplink and downlink resources between mobile terminals (110) and a base station (130). To reduce the power leakage between the transmitter and the receiver of the mobile terminal (110), the scheduler allocated uplink frequency carriers and downlink frequency carriers with a larger duplex distance to those mobile terminals (110,120) that has to transmit with high power. This means that the requirements on the external SAW filter could be reduced.
Owner:TELEFON AB LM ERICSSON (PUBL)
Car door structure and noise insulation sheet
InactiveCN100516448CImprove sound insulationEasy to installDoor/window applicationsVehicle sealing arrangementsEngineeringAcoustic board
Owner:NISHIKAWA RUBBER
Bus door structure and sound insulating plate
InactiveCN100577458CImprove sound insulationEasy to installEngine sealsVehicle sealing arrangementsEngineeringAcoustic board
A car door structure comprises a door inner panel 11, an interior door trim 12 and a noise insulation sheet 20. The interior door trim 12 is installed in the interior side of the door inner panel 11. The noise insulation sheet 20 is provided between the door inner panel 11 and the door trim 12, where it is hung down from the upper side to the lower side of the door inner panel like a curtain. The noise insulation sheet 20 is fixed to either the door inner panel 11 or the door trim 12. The noise insulation sheet 20 is provided at about an upper half or a lower half of the door inner panel 11, or it is provided at a central part of the door inner panel 11 while dividing approximately into three sections in a vertical direction or a horizontal direction.
Owner:NISHIKAWA RUBBER
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