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138results about How to "Small rotation" patented technology
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Cable made of high strength fiber composite material
A practical cable made of a high strength fiber composite material is provided, which has high and stable strength, in addition, has even axial tension against bending and thus has a stable shape, and can be wound on a reel without shape deformation, and is hardly buckled when it is inserted into a hole or cylinder. The cable is formed by singly twisting a plurality of high strength fiber composite materials is used as a strand, and a plurality of the strands are twisted together at a twist angle of 2 to 12 degrees in a direction opposite to a twist direction of the strands, so that a double twist structure is made.
Owner:TOKYO ROPE MFG
Cable Made Of High Strength Fiber Composite Material
A practical cable made of a high strength fiber composite material is provided, which has high and stable strength, in addition, has even axial tension against bending and thus has a stable shape, and can be wound on a reel without shape deformation, and is hardly buckled when it is inserted into a hole or cylinder. [Means for Resolution] A cable formed by singly twisting a plurality of high strength fiber composite materials is used as a strand, and a plurality of the strands are twisted together at a twist angle of 2 to 12 degrees in a direction opposite to a twist direction of the strands, so that a double twist structure is made.
Owner:TOKYO ROPE MFG
Adjusting device for variable guide vanes and method of operation
ActiveUS20110182715A1High angular rotationSmall rotationPump componentsWind motor controlMechanical engineeringEngineering
A device, system, or method to position variable guide vanes disproportionately is provided. An adjusting device for guide vanes of an axial-flow machine, includes a plurality of rotatably mounted rings of variable guide vanes, a plurality of levers which are arranged on the outer sides of a guide vane carrier for rotating the variable guide vanes, a plurality of adjusting rings, each of the adjustment rings is arranged coaxially to the guide vane carrier and to which a first end of one of the levers is connected, and an adjusting drive with which the adjusting rings may be moved in the peripheral direction. At least one of the levers is set up to perform at least partly a disproportionate longitudinal movement of the first end of the at least one lever.
Owner:SIEMENS ENERGY GLOBAL GMBH & CO KG
System and method for identifying initial angle of permanent magnet synchronous motor
ActiveCN103401502ASmall rotationMeet start-up needsElectronic commutation motor controlAC motor controlPermanent magnet synchronous motorPermanent magnet synchronous generator
The invention provides a system for identifying an initial angle of a permanent magnet synchronous motor. The running of the permanent magnet synchronous motor is controlled by a servo driver; the system comprises a current output unit, a steering determining unit, a current regulating unit and an initial angle searching unit, wherein the current regulating unit is used for regulating an angle of the output current of the current output unit according to a rotating direction of a rotor and through a way of adding a preset step-length angle on a given angle of primary current, and the initial angle searching unit is used for determining the initial angle of the rotor when the rotating direction of the rotor is changed. The invention also provides a corresponding method. According to the system and the method, which are provided by the invention, by outputting the current in the given angle to a stator of the motor and regulating the angle of the current which is output to the stator according to the rotating direction of the rotor, the position of the initial angle of the rotor of the motor can be determined.
Owner:SHENZHEN INOVANCE TECH +1
Technique for drilling straight bore holes in the earth
InactiveUS20060207801A1Improve balanceSmall rotationDrilling rodsDirectional drillingFluteEngineering
A stabilizer assembly is at least 12′ long and preferably at least 14′ long and is used to drill a straight bore hole in the earth. A central passage through the assembly closely follows a centerline as may be determined by measuring the wall thickness of the tube at a variety of locations in a single plane. At least three stabilizing sections are integral with the tube and include alternating ribs and flutes. Hardbanding on the ribs is ground down to tolerances with a grinding machine or face plate lathe having centers sufficient to receive the 12′ long stabilizer assembly.
Owner:CLAYTON TROY LEE
Power output apparatus, control method thereof, and vehicle
ActiveUS20090319109A1Suppressing erroneous learningExcessive amount of controlHybrid vehiclesAnalogue computers for vehiclesDrive shaftIdle speed
A power output apparatus includes a control unit that controls an internal combustion engine, a generator, and an electric motor such that a required driving force is output to a drive shaft. The control unit learns an idle control amount, which is a control amount obtained during an idle operation of the internal combustion engine, in accordance with establishment of a predetermined learning condition when a rotation variation amount of the drive shaft is within a predetermined range including a value of zero, and does not learn the idle control amount when the rotation variation amount of the drive shaft is not within the predetermined range.
Owner:TOYOTA JIDOSHA KK
Connection structure for tractor
The invention provides a connection structure for a tractor. The connection structure comprises a first connection portion, a second connection portion and a third connection portion. The first connection portion is suitable for being rotatably connected with a head portion of the tractor through a vertical rotating shaft, the second connection portion and the first connection portion are in rotatable connection through a first rotating shaft in the horizontal direction, and the third connection portion and the second connection portion are in rotatable connection through a second rotating shaft in the horizontal direction. The extension direction of the second rotating shaft is perpendicular to that of the first rotating shaft, and the third connection portion is suitable for being connected with a trailer portion of the tractor. Relative rotation between the first connection portion and the second connection portion is locked or unlocked through a first locking device, and relative rotation between the second connection portion and the third connection portion (3) is locked or unlocked through a second locking device. Springs are arranged between the second connection portion and the third connection portion and mainly used for buffering, and extension directions of the springs are perpendicular to the second rotating shaft.
Owner:NINGBO BEIYE TRACTOR MFG
Lubrication structure for rolling bearing
InactiveUS7070333B2Increased load-bearing capacityGood estimateShaftsBall bearingsRolling-element bearingCentrifugal force
A fin member is installed in an oil accumulating room. The fin member causes lubrication oil to follow rotation of the oil accumulating room so that the lubrication oil can be forcibly rotated. In this manner, a rotational speed difference between the oil accumulating room and the lubrication oil is made small, and an adequate oil supplying pressure is generated by the centrifugal force. As a result, a sufficient quantity of the lubrication oil can be supplied. Therefore, estimation of a supplying oil quantity becomes easy, and accuracy in prediction of the lubrication oil quantity actually used for the bearing lubrication can be improved.
Owner:IHI CORP
Interferometer
InactiveUS20090002789A1Reduce acquisition timeSmall rotationInterferometersUsing optical meansLight beamReference beam
The interferometer of the invention comprises a moving mirror 106 for rotating the direction of an illumination beam on an observed sample 114, and a reference beam interfering with a beam diffracted by the object 114 on a detector 111. The reference beam is tilted relative to the diffracted beam.
Owner:LAUER VINCENT
Abandonment and recovery system and method, and cable connector
ActiveUS20070248418A1High positioning accuracyAssembly is smallPipe laying and repairWinding mechanismsOcean bottomWinch
A system for abandonment or recovery of a load, e.g., a pipeline or sub-sea structure, includes: at least two cables, each with a length adapted for a certain water depth and with a first end and a second end; a winch system for the at least two cables, the first ends of each cable being connected to the winch system; and a connection device for connecting the second ends of each cable to the load to be abandoned or recovered.
Owner:ALLSEAS GRP SA
Geared motor for an active roll stabilizer
A slewing motor for an active roll stabilizer, which can be connected by its drive to one stabilizer half, and which can be connected on the stator side to another stabilizer half of a divided stabilizer. A torsion element, whose rotational rigidity is lower than the rotational rigidity of the stabilizer, is effectively arranged between the drive and the one stabilizer half.
Owner:SCHAEFFLER TECH AG & CO KG
Valve device and hydraulic control system
ActiveUS20160363036A1Simple structureSmall dimensionOperating means/releasing devices for valvesCoolant flow controlRotary valveEngineering
A first valve portion and a second valve portion are formed in a rotary valve, wherein the first and the second valve portions are arranged in an axial direction thereof. The first valve portion includes a first and a second valve windows formed in a valve member, and a first and a second valve port openings formed in a valve housing. The second valve portion includes a third valve window formed in the valve member and a third valve port opening formed in the valve housing. The valve member is rotatable in both directions of a clockwise direction and an anti-clockwise direction, so that each of the first to the third valve port openings is respectively opened or closed by the first to third valve windows. Each of the valve windows and the valve port openings of the first valve portion is formed in a rectangular shape in its developed figure in a rotational direction of the valve member.
Owner:DENSO CORP
Motor stop control device utilizable for reel-type gaming machine
ActiveUS7038411B2Less mandaySmoothness is lostMotor/generator/converter stoppersElectric motor controlControl theoryStepper motor
Owner:UNIVERSAL ENTERTAINMENT CORP
Rolling bearing and bearing apparatus
InactiveUS6896415B2Small rotationHigh rotation accuracyBearing assemblyShaftsRolling-element bearingLubricant
In a bearing apparatus which is composed of two bearings each including a crown-shaped retainer and in which a lubricant is filled into its raceways, a preload is applied from the retainer pocket-opening side end face of an inner ring, and also a preload is applied from the retainer counter-pocket-opening side end face of an outer ring.
Owner:NSK LTD
Vehicle for line marking
ActiveUS20150275445A1Reduce probabilityReduce rotationSki bindingsFluid couplingsSteering wheelUniversal joint
A vehicle for line marking, having a steering mechanism (10) including: a directional wheel (5) that pivots about a steering shaft (12) coupled to a steering actuator (13); a control actuator (21) responsive to a steering wheel (22); and a universal joint coupling the control actuator (21) and the steering actuator (13) at a fixed angle between 20° to 70°, preferably 30° to 60°; the angle of the universal joint acting to produce a varying steering ratio as the steering wheel is moved away from its centred position. The vehicle includes a hydraulic pump circuit for a motor (101) driven line marking spray device (77) having a hydraulic supply line (105) for the motor with a check valve (107) and a high pressure accumulator (109) between the check valve and the motor and a pressure actuated ram (102) to deactivate the pump (100) when the pressure exceeds a threshold; the motor return line having a low pressure accumulator (110) and a restricted (112) bypass line (111).
Owner:WATSON DIANE LEE
Illuminating device and projector using it and built-in display unit
InactiveUS7006163B2Improve linearityLow costTelevision system detailsPicture reproducers using projection devicesLight equipmentLight beam
An illuminating device comprising a light source for emitting a plurality of light beams (207, 208, 209) of different colors, a plurality of rotating beam scanners (102, 103, 104) and a plurality of scanning lenses (109, 110, 111). The beam scanners have spiral reflection surfaces (102, 103, 204) formed on the outer peripheries of cylindrical bodies, Each colored light beam is shone onto each reflection surface from a direction parallel to a rotating axis, and magnified by each scanning lens after reflected to scan an illuminated area with a plurality of beams of different colors one after another. Accordingly, the illuminating device can enhance scanning linearity, reduce noise due to a minimal windage loss, and decrease costs and power consumption.
Owner:PANASONIC CORP
Lens activating device
InactiveUS20100172041A1Small rotationSimple structureMetabolism disorderDigestive systemCamera lensEngineering
A lens activating device includes at least one elastic piece, at least one stationary piece and a movable piece. At least one elastic piece has at least four sheet portions and four sets of elastic portions. Each set of the elastic portions are serpentine and connected between two sheet portions in order to make the at least one elastic piece form a closed ring. The stationary piece is connected to two sheet portions, and the movable portion is connected to the other two sheet portions. The elastic force generated by the four sets of elastic portions exerts a restoring force on the movable piece. Via this arrangement, the slight rotation of the movable piece within the lens activating device can be reduced. Further, the problem that the elastic piece may scrape the neighboring elements can be prevented.
Owner:WAH HONG INDAL CORP
Digital displacement measuring instrument
ActiveUS20040250439A1Good adhesionSuppresses measurement errorsMicrometersConverting sensor outputMeasuring instrumentEngineering
A stator (42) is hooked in a frame body (10) away with a prespecified space from a spindle (2), so that it is not necessary to fix the stator with a screw. The stator (42), therefore, can easily be mounted, and further as it is not necessary to provide a screw hole in the frame body (10), so that the need for waterproofing processing associated with a screw hole is eliminated. Further the stator (42) is hooked in a protrusion (53) of an electronic unit (50) inside the frame body (10) away with a prespecified space from the spindle (2), so that a rotation thereof in the peripheral direction of the spindle due to play and rattle is small and a measurement error can be suppressed.
Owner:MITUTOYO CORP
Aseptic filling valve
Owner:HANGZHOU ZHONGYA MACHINERY CO LTD
Combined center cam and reel arm
An integrated reel arm and reel cam for use in an agricultural harvesting header that positions both within the same lateral space in order to reduce the width of the integrated assembly. The reel arm connects directly to a rearwardly facing structure on the reel cam and may include adjustment means for varying cam timing. The lateral width of the reel arm and connection is configured to be no greater than the lateral width of the reel cam thereby enabling positioning of a reel cam between adjacent reels in little more than the lateral width of the cam itself. The integrated reel arm and reel cam may also benefit conventional outboard reel cam configurations by reducing the lateral space requirements at the ends of a header reel.
Owner:BLUE LEAF I P
Method and an apparatus of an inspection system using an electron beam
InactiveUS6987265B2Increase speedLittle changeImage enhancementImage analysisElectric signalSemiconductor
Problems encountered in the conventional inspection method and the conventional apparatus adopting the method are solved by the present invention using an electron beam by providing a novel inspection method and an inspection apparatus adopting the novel method which are capable of increasing the speed to scan a specimen such as a semiconductor wafer.The inspection novel method provided by the present invention comprises the steps of: generating an electron beam; converging the generated electron beam on a specimen by using an objective lens; scanning the specimen by using the converged electron beam; continuously moving the specimen during scanning; detecting charged particles emanating from the specimen at a location between the specimen and the objective lens and converting the detected charged particles into an electrical signal; storing picture information conveyed by the electrical signal; comparing a picture with another by using the stored picture information; and detecting a defect of the specimen.
Owner:HITACHI LTD
Technique for drilling straight bore holes in the earth
A stabilizer assembly is at least 12′ long and preferably at least 14′ long and is used to drill a straight bore hole in the earth. A central passage through the assembly closely follows a centerline as may be determined by measuring the wall thickness of the tube at a variety of locations in a single plane. At least three stabilizing sections are integral with the tube and include alternating ribs and flutes. Hardbanding on the ribs is ground down to tolerances with a grinding machine or face plate lathe having centers sufficient to receive the 12′ long stabilizer assembly.
Owner:CLAYTON TROY LEE
Box end ratchet wrench with reduced ratcheting arc
A reduced arc box end ratchet wrench or ratchet drive wrench utilizes a multiple pawl ratchet assembly comprised of a body having an insert cavity to enclose critical components of an insert that is secured within the ratchet assembly. The insert is set into the wrench body and includes a plurality of pivoting pawls. Each pawl comprises a lever arm with ratchet engaging teeth. The pawl arms are positioned relative to the ratchet wheel to create “pawl swing arcs” and “reduced ratcheting arcs” to alternately or successively engage a portion of the teeth of a ratchet wheel at all times. This configuration allows smaller degrees between ratchet teeth and a smaller wrench rotation that is otherwise required to apply torque.
Owner:GAPP STEVEN JAMES +2
Variable-pitch propeller
ActiveUS20100040469A1Smooth rotationSmall rotationPropellersWind motor controlVariable pitch propellerMotion system
Variable-pitch propeller (1) of the type comprising at least one blade (6a, 6b, 6c) rotatably pivoted (20a, 20b, 20c) to a cylindrical casing of the propeller (3a, 3b, 4), a shaft coupled to an engine and coaxial to that propeller casing, a kinematic system (7, 8a, 8b, 8c, 10a, 10b, 10c, 11), coupled to the shaft, or to the propeller casing, and to above mentioned at least one blade, for regulating the rotary motion of said at least one blade around its own pivot axis to the propeller casing, as well as means (2, 14, 15) for transmitting the rotary motion of the shaft to the propeller casing, the propeller being shaped to provide at least one not null angular range for the free relative rotation of the above mentioned at least one blade (6a, 6b, 6c) around its pivot axis, relatively to the propeller casing (3a, 3b, 4). The propeller also comprises at least one elastic element (18, 18′) countering the relative rotation of said at least one blade relatively to the propeller casing (3a, 3b, 4), or vice versa.
Owner:MAX PROP
Utility vehicle
ActiveUS9352496B2Increase freedomWeight increase is suppressedPedestrian/occupant safety arrangementOptical articlesAerospace engineering
Owner:KAWASAKI MOTORS LTD
Screw holding device and screwdriver
A screw holding device configured to assist a screwdriver in holding a screw, the screwdriver providing rotary power output to the screw, the screw holding device comprising: a body capable of being connected with the screwdriver; a holder connected with the body and comprising at least two clamping arms configured to move between a clamp position wherein the screw is clamped and a release position wherein the screw is released; and a driving mechanism configured to drive the clamping arms and comprising a guide unit and a connection unit. The connection unit is in correspondence to the clamping arms and comprises first and second connectors respectively connected with the clamping arms. The guide unit drives the first connector to move longitudinally and laterally, and drives the second connector to move at least longitudinally, so as to drive the clamping arms to produce pivotal motion and longitudinal linear motion.
Owner:POSITEC POWER TOOLS (SUZHOU) CO LTD
Button mechanism of tripod and tripod
ActiveCN107270073AReduce design requirementsLow structural strength requirementControlling membersLimiting/preventing/returning movement of partsMechanical engineeringEngineering
Owner:GUANGDONG SIRUI OPTICAL CO LTD
Switch in electric power tool
The invention discloses a switch in an electric power tool which is simple in structure and quick to reverse. The switch comprises a casing, wherein a reverse base is arranged in the casing; three terminals distributed in a regular triangle manner are arranged on the reverse base; a driving lever is hinged to the casing; one end of the driving lever extends out of the casing, and the other end of the driving lever is positioned in the casing; a reverse sheet is arranged at the end, positioned in the casing, of the driving lever; one end of the reverse sheet is contacted with one of the terminals; when the other end of the reverse sheet is positioned between the other two terminals, the switch is in a closed state; after the driving lever rotates, the other end of the reverse sheet is contacted with one of the other two terminals, and the switch is in a forward or backward rotating state; a circuit board is arranged on one side of the reverse base; and the three terminals on the reverse base are connected with the circuit board via leads respectively. The switch has the advantages that the terminals are distributed in a triangular manner, so that the rotating range of the driving lever, the occupied space of the terminals and the size of the switch are reduced.
Owner:SUZHOU HUAZHIJIE TELECOM
Obstacle avoidance method for unmanned ship with long towed line array
ActiveCN111158381AReduce speedEnsure space securityWater resource assessmentPosition/course control in two dimensionsClassical mechanicsObstacle avoidance
The invention relates to the technical field of ship control, and particularly discloses an unmanned ship obstacle avoidance method with a long towed line array. The method comprises the following steps: S1, constructing a water surface obstacle expansion area; S2, calculating the relative position and the relative speed of the obstacle relative to the unmanned ship; S3, obtaining a speed obstaclearea of the unmanned ship; S4, dividing the velocity obstacle area vector into a plurality of velocity obstacle grids, wherein each velocity obstacle grid corresponds to the navigational speed and the navigational direction; calculating a nearest meeting distance DCPA corresponding to each speed obstacle grid and a time value TCPA for reaching the nearest meeting distance; S5, calculating a costfunction of each speed obstacle grid; and S6, selecting the speed obstacle grid with the minimum cost function as a control instruction of the unmanned ship with the long towed line array in the nextstep. By the adoption of the technical scheme, overall obstacle avoidance of the long towed line array and the water surface unmanned ship can be achieved.
Owner:CETC NINGBO MARINE ELECTRONICS RES INST
Rotary type stereo garage
The invention relates to a rotary type stereo garage device, comprising a garage exterior building, a part of building above the garage ground of a garage door and garage structure equipment composed of a parking space device and a rotary type structure controlled by a planetary gear, wherein the parking space device is composed of a parking space handrail, a sweeping board and a support frame through a connecting piece. The rotary type structure controlled by the planetary gear is a main structure of the rotary type stereo garage device, comprises fixed gear wheels, drive gear wheel carriers, driven gear wheels, drive gear wheels and transmission gear wheels connected with a motor. According to the rotary type stereo garage, the underground space and the ground space are combined, a stereo garage with a high space integration degree is designed, not only is the space utilization increased, but also the efficiency of automobile parking and taking is improved.
Owner:DONGHUA UNIV
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