| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Screw fluid machine and screw gear used in the same | US865157 | 1997-05-29 | US5829957A | 1998-11-03 | Masayuki Ozaki; Isao Akutsu |
| In a screw fluid machine including male and female rotors which are engaged with each other, a casing for accommodating both the male and female rotors, fluid working rooms which are formed by the male and female rotors and the casing, and fluid inlet and outlet ports which are provided in the casing so as to intercommunicate with one end portion and the other end portion of the working rooms, the helix angle of the screw gear constituting each of the male and female rotors is set to be continuously varied in a helix advance direction. Further, the screw gear is designed so that the peripheral length of a pitch cylinder in a helix advance direction on a development of a tooth-trace rolling curve on the pitch cylinder of the screw gear can be expressed by a substantially monotonically increasing function. | ||||||
| 42 | Vacuum pump having different diameter rotors and a drive motor synchronization system | US494737 | 1995-06-26 | US5782609A | 1998-07-21 | Yoshihiro Ikemoto; Teruo Maruyama |
| A vacuum pump includes a plurality of rotors of different outer diameters accommodated in a housing so that a fluid transportation space is defined by the housing and the plural rotors. Rotary shafts are integrally formed with the respective rotors and a first motor, which is a high frequency motor, for driving the rotary shaft of the smaller diameter rotor as a driving shaft. A second motor, which is an AC servo motor or pulse motor, is provided for driving the other rotary shaft as a driven shaft. A rotation detecting device is provided adjacent each shaft for detecting rotating angles and/or rotating speeds of the first and second motors. Also provided is a fluid suction port and a fluid discharge port which are formed in the housing, and a control device for controlling rotation of the driven shaft based on data from the rotation detecting device so as to synchronize the rotation of the driven shaft driven by the second motor with that of the driving shaft driven by the first motor. | ||||||
| 43 | Vacuum pump motor arrangement having reduced heat generation | US778499 | 1997-01-03 | US5779453A | 1998-07-14 | Masami Nagayama; Katsuaki Usui; Kozo Matake; Yoshinori Ojima; Genichi Sato; Yasushi Hisabe |
| A vacuum pump has a pump casing having a suction side where a suction port is located and a discharge side where a discharge port is located, a pump assembly housed in the pump casing and comprising a pair of pump rotors rotatable in synchronism with each other and having respective shafts, and a brushless direct-current motor mounted on the pump casing at a suction side of the pump casing. The motor has a pair of motor rotors comprising respective sets of permanent magnets which are mounted respectively on the shafts, a pair of cans surrounding outer circumferential and end surfaces of the motor rotors in sealing relation to the pump assembly, a motor stator mounted on the cans and housed in a water-cooled motor frame. | ||||||
| 44 | Screw fluid machine and screw gear used in the same | US516283 | 1995-08-17 | US5674063A | 1997-10-07 | Masayuki Ozaki; Isao Akutsu |
| In a screw fluid machine including male and female rotors which are engaged with each other, a casing for accommodating both the male and female rotors, fluid working rooms which are formed by the male and female rotors and the casing, and fluid inlet and outlet ports which are provided in the casing so as to intercommunicate with one end portion and the other end portion of the working rooms, the helix angle of the screw gear constituting each of the male and female rotors is set to be continuously varied in a helix advance direction. Further, the screw gear is designed so that the peripheral length of a pitch cylinder in a helix advance direction on a development of a tooth-trace rolling curve on the pitch cylinder of the screw gear can be expressed by a substantially monotonically increasing function. | ||||||
| 45 | Multi-stage vacuum pump | US325979 | 1994-10-21 | US5478210A | 1995-12-26 | Teruo Maruyama; Akira Takara |
| A vacuum pump includes a plurality of rotors accommodated in a housing, a plurality of bearings for supporting the shafts of the rotors, respectively, a fluid-suction opening and a fluid-discharge opening formed in the housing, and a motor for driving at least one of the rotors. The pump has a first pump structure section for suction and discharge of gas, the pressure of which is in a viscous flow region, by utilizing change in volume of a space formed by the rotors and the housing. A second pump structure section is provided for transporting gas, a pressure of which is in an intermediate flow region, and gas, the pressure of which is lower than a pressure of the intermediate flow region, by utilizing movement of the space from a suction side to a discharge side of the second pump structure section. | ||||||
| 46 | Two stage vacuum pump having different diameter interengaging rotors | US9632 | 1993-01-27 | US5449276A | 1995-09-12 | Teruo Maruyama; Akira Takara |
| A fluid rotating apparatus includes a plurality of rotors accommodated in a housing, at least one of the rotors having its outer diameter different from that of the other of the rotors. Bearings are provided for supporting rotary shafts of the plurality of rotors. A fluid suction port and a fluid discharge port are formed in the housing. A motor is provides for rotating at least one of the plurality of rotors, and a control system for synchronously controlling the plurality of rotors in a contactless manner is provided for each rotary shaft of the plurality of rotors. | ||||||
| 47 | Vacuum pump having parallel kinetic pump inlet section | US269905 | 1994-07-06 | US5445502A | 1995-08-29 | Daisuke Itou; Teruo Maruyama |
| A vacuum pump includes a positive displacement vacuum pump structure section disposed on a discharge opening side; a kinetic vacuum pump structure section, disposed on a suction opening side, for providing a high vacuum; and a kinetic vacuum pump structure section, disposed on a suction opening side, for providing a high pumping speed. The construction of the kinetic vacuum pump structure section is different from that of the kinetic vacuum pump structure section so as to differ relative thereto in one of ultimate pressure, pumping speed, and pumping speed of sucked gas with respect to a molecular weight of the sucked gas. | ||||||
| 48 | Housing arrangement for a synchronous plural motor fluid rotary apparatus | US210631 | 1994-03-18 | US5417551A | 1995-05-23 | Yoshikazu Abe; Teruo Maruyama; Akira Takara; Norio Okutani |
| A fluid rotary apparatus includes rotors accommodated in a housing, driving shafts on which the rotors are mounted, upper and lower bearings for rotatably supporting upper and lower portions of each of the shafts, fluid suction and fluid-discharging openings formed in the housing, motors adapted for independently and synchronously driving each of the shafts, rotation-detecting devices for detecting the rotational angle and/or the number of rotations of each motor, contact-preventing gears for contacting each other before the rotors contact each other, and a positive displacement pump structure section sucking and discharging fluid by utilizing a closed space formed by the rotors and the housing and controlling the motors in synchronous rotation thereof in response to signals outputted from the device. The housing includes, along the axial direction of the shaft, a first section accommodating the rotors, a second section accommodating the gears and the upper bears, a third section accommodating the lower bearings, a fourth section accommodating the motors and a fifth section accommodating the detecting device. The housing sections are capable of being disassembled by fixing members removably fixing the housing sections to each other and sealing members held between the housing sections. | ||||||
| 49 | Vacuum pump | US6500 | 1993-01-21 | US5352097A | 1994-10-04 | Daisuke Itou; Teruo Maruyama |
| A vacuum pump includes a positive displacement vacuum pump structure section disposed on a discharge opening side; a kinetic vacuum pump structure section, disposed on a suction opening side, for providing a high vacuum; and a kinetic vacuum pump structure section, disposed on a suction opening side, for providing a high pumping speed. The construction of the kinetic vacuum pump structure section is different from that of the kinetic vacuum pump structure section so as to differ relative thereto in one of ultimate pressure, pumping speed, and pumping speed of sucked gas with respect to a molecular weight of the sucked gas. | ||||||
| 50 | Fluid rotating apparatus and method of controlling the same | US903322 | 1992-06-24 | US5271719A | 1993-12-21 | Yoshikazu Abe; Teruo Maruyama; Akira Takara |
| A fluid rotating apparatus of a positive displacement pump includes a plurality of rotors accommodated in a housing, a bearing for rotatably supporting the rotors, a suction port and a discharge port formed in the housing, a suction chamber and a discharge chamber in the housing respectively communicating with the suction port and the discharge port, a plurality of motors for individually rotating the rotors, and a detecting device for detecting rotating angles and rotating numbers of the motors. In the apparatus, a fluid is sucked and discharged due to capacity change of a space defined by the rotors and the housing through synchronous control of the rotation of the plurality of motors by a signal from the detecting device. The housing has a communicating path with a flow control device to make an upstream side communicate with a downstream side of the apparatus when the rotational numbers of the rotors are less than a predetermined value. A method of controlling the apparatus includes the steps of opening the communicating path by operating the flow control device to cause the upstream side to communicate with the downstream side of the apparatus when the rotational numbers of the rotors are less than a predetermined value, and closing the communicating path by operating the flow control device when the rotational numbers of the rotors are not less than a predetermined value. | ||||||
| 51 | Multi-spindle synchronous drive unit and gear cutting machine employing the same | US472292 | 1990-01-30 | US5037252A | 1991-08-06 | Mikio Hasegawa; Takeshi Shiraishi |
| A multi-spindle synchronous drive unit for synchronously driving a plurality of spindles, includes a plurality of motors for respectively driving the spindles, a plurality of encoders for respectively detecting rotational positions of the motors, a plurality of phase locked loop control units for respectively controlling a drive of the motors and for receiving as feedback signals detection signals respectively output by the encoders, a reference pulse oscillator for outputting a pulse signal, and a plurality of multipliers for multiplying the pulse signal by multiplication factors respectively corresponding to rotational speed ratios of the spindles and for respectively outputting speed command pulse signals to the phase locked loop control unit. | ||||||
| 52 | Drive for fluid handling devices of the rotary, positive displacement type | US9115449 | 1949-05-03 | US2640428A | 1953-06-02 | HOUGHTON CARL R |
| 53 | 直接駆動を備える回転ローブポンプ | JP2015540109 | 2013-10-30 | JP6364419B2 | 2018-07-25 | パウル・クランペ; フーゴ・フォーゲルザング |
| 54 | 2-axis synchronization inversion drive motor | JP20339099 | 1999-07-16 | JP4014336B2 | 2007-11-28 | 信人 宮下; 善徳 小島; 幸三 眞武; 高典 稲田 |
| 55 | Screw spindle vacuum pump and method of operation thereof | JP50163099 | 1998-06-09 | JP4002304B2 | 2007-10-31 | ケステルス，ハイナー; ダームロス，クリスティアン |
| 56 | Helix angle variable gear | JP21816394 | 1994-08-19 | JP3593365B2 | 2004-11-24 | 昌之 尾崎; 功 阿久津 |
| 57 | Biaxial synchronous inversion driving motor | JP20339099 | 1999-07-16 | JP2001037175A | 2001-02-09 | MATAKE KOZO; KOJIMA YOSHINORI; MIYASHITA NOBUHITO; INADA TAKANORI |
| PROBLEM TO BE SOLVED: To provide a biaxial synchronous inversion driving motor capable of stable synchronous inversion of two rotors at a high speed, interposing a specified interval. SOLUTION: In a non-arrangement part of an armature, two rotors 6 in which permanent magnets 5 are arranged on the periphery are rotatably supported holding a specified interval between the rotors, armature is arranged on the outer periphery of each rotor holding a specified air gap, and the rotors are formed facing each other. In this biaxial synchronous inversion driving motor, different magnetic pole surfaces of the rotors are made to face each other and magnetic coupling is constituted, and the rotors are phase-inverted and rotated by a space moving magnetic field of the armatures. Arrangement of armatures 3 driving a right rotor and a left rotor is symmetric by setting a symmetric line rectangular to a line connecting the center lines of two axes as symmetry. The rotors 6 are isolated and arranged. Armature windings 4 arranged at symmetric positions are saliently concentrated and wound around armature cores 3 so as to have the same phases and different poles. The armature cores 3 are fixed on the inner periphery of a stator yoke 2, and form a motor. The windings 4 are so connected that the right rotor and the left rotor generate simultaneously inversion torque by one driving device. COPYRIGHT: (C)2001,JPO | ||||||
| 58 | Multistage screw spindle compressor | JP50357097 | 1996-06-18 | JPH11508015A | 1999-07-13 | シュテフェンス，ラルフ; ダームロス，クリスティアン; ルック，ディートマー |
| (57)【要約】 スクリューロッド圧縮機、特に真空ポンプの片持ち梁式送りロータ(８)は、好ましくは、ロータと、ロータの空洞(２４)の中に突出している静止軸受体との互いに対向する表面間の熱交換によって、吸込側に接する領域よりも圧縮側に接する領域においてより強力に冷却される。 軸受領域を保護するために、周面には協働する運搬部材が設けられ、その運搬はロータから離れの方向に導く。 | ||||||
| 59 | Vacuum pump | JP14483694 | 1994-06-27 | JPH0814177A | 1996-01-16 | IKEMOTO YOSHIHIRO; MARUYAMA TERUO |
| PURPOSE:To improve stability of synchronous control, and vacuum reaching pressure due to a high speed, and the like, by controlling the rotation driving means of a slaving shaft based on information of a rotation detecting means so that the rotation of the slaving shaft is synchronized with the rotation of a main driving shaft. CONSTITUTION:Pulse frequency for rotating a high frequency motor 22 and an AC servomotor 21 at the same speed, is operated/created by a pulse generator 28 so as to be transmitted to the control circuit 29 of the AC servomotor 21. A signal is transmitted from the control circuit 29 to a driver 30 to drive the AC servomotor 21 so that the AC servomotor 21 is rotated at the same speed of the high frequency motor 22. When the position of the high frequency motor 22 is advanced than that of the servomotor 21, the number of command pulses created by the pulse generator 28 is made to increase based on the data of a relative position operating part 31 so as to make the position of the AC servomotor 21 to advance so that the rotational speeds and positions of the high frequency motor 22 and the AC servomotor 21 are mutually synchronized. The position of the high frequency motor 22 is delayed, if that of the AC servomotor 21 is delayed. | ||||||
| 60 | Vacuum exhaust system | JP18997293 | 1993-07-30 | JPH06129384A | 1994-05-10 | MARUYAMA TERUO; TAKARA AKIRA; ABE RYOICHI; IKEMOTO YOSHIHIRO |
| PURPOSE:To provide a low ultimate vacuum with a low power consumption and low noise by using a combination of two pumps, i.e., a first pump situated near the suction hole and having a large exhaust amount and a second pump which is located near the discharge hole, has a small exhaust amount, and which nevertheless can generate a satisfactorily low ultimate vacuum. CONSTITUTION:The first pump and the second pump 7 are coupled serially, wherein the first has a large exhaust amount and is composed of a vacuum chamber 1, cylinder 2, fluid transfer space 3 on the suction side, fluid transfer space 4 on the exhaust side, piston 5, and piston rod 6, while the second has a small exhaust amount but gives a satisfactorily low ultimate cavuum. Soon after the start of evacuation, a large quantity of gas from the vacuum chamber 1 is inhaled in the first vacuum pump, and the gas exhausted with a valve 11 in opened condition is released to a factory piping 13. When the pressure in the vacuum chamber 1 attains a satisfactorily low vacuum, the valve 11 closes the passage leading from the first exhaust hole 8 to the exhaust side, and the gas in a minute rate of flow is transported while the second pump 7 keeps a large differential pressure. | ||||||
QQ群二维码
意见反馈
意见反馈