| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | Evacuating apparatus | US466981 | 1995-06-06 | US5709537A | 1998-01-20 | Teruo Maruyama; Akira Takara; Yoshikazu Abe; Yoshihiro Ikemoto |
| An evacuating apparatus includes a first pump section disposed on a suction opening side, a second pump section for exhausting a smaller amount of gas than the first pump section, the second pump being disposed in an exhaust opening side, a plurality of rotors accommodated in a housing, bearings for supporting rotation of the rotors, a suction opening for drawing fluid and a first exhaust opening thereof both formed on the housing, and a plurality of motors for driving the rotors. In the apparatus, the first pump section is a pump of positive displacement type formed by utilizing a volume change of a space defined by the rotors and the housing, and the second pump section is a viscous-type pump formed by utilizing a relatively moving surface formed in a small gap defined between the rotors and the housing. | ||||||
| 22 | Positive displacement pump having synchronously rotated non-circular rotors | US500369 | 1995-07-10 | US5674051A | 1997-10-07 | Teruo Maruyama |
| A positive displacement pump includes a plurality of rotors accommodated in a housing, each of the rotors having a non-circular sectional shape, bearings for supporting rotation of the rotors, a fluid inlet formed in the housing on its suction side and a fluid outlet formed in the housing on its discharge side, motors for independently rotating the plurality of rotors, and detecting devices for detecting a rotating angle and/or a rotation frequency of each of the rotors. While the plurality of rotors are controlled to be synchronously rotated basis on of signals from the detecting devices, a change of a volume of a space defined by the rotors and housing from the suction side to the discharge side is utilized to thereby draw in and discharge a fluid. | ||||||
| 23 | Synchronous rotating apparatus for rotating a plurality of shafts | US11901 | 1993-02-01 | US5393201A | 1995-02-28 | Norio Okutani; Teruo Maruyama |
| A synchronous rotating apparatus synchronously rotates a plurality of rotary shafts independently driven by corresponding driving devices. The apparatus includes: a mechanical regulating member, arranged on the shafts, for maintaining relative rotating positions of the shafts at a predetermined angular difference; a rotation velocity and phase-detecting member, arranged on each shaft, for detecting rotation velocities of the shafts and phases within a regulated angular difference of the regulating member, and a driving control device for controlling the driving devices of the shafts so as to synchronously rotate the shafts based on a phase difference detected by the detecting member. The apparatus is applied to a fluid rotary apparatus. | ||||||
| 24 | Fluid rotating apparatus with sealing arrangement | US156723 | 1993-11-24 | US5374173A | 1994-12-20 | Teruo Maruyama; Akira Takara; Yoshikazu Abe |
| A fluid rotating apparatus includes a casing having a gas inhaling inlet and a gas discharge outlet, rotors driven in the casing by a driving mechanism and having fluid-transporting grooves which engage each other in synchronous rotation, and bearing portion for supporting the rotors. A communicating path is formed at one of the rotors and the and the casing for communicating a gas discharge-side inner space and a space defined by an inner surface of the casing and the fluid-transporting groove of an outer surface of each rotor with each other. The gas discharge-side inner space is defined by an end surface of the rotor opposite to a gas inhaling-side surface thereof, and a sealing portion which is formed between the rotor and the casing to prevent fluid from flowing into the gas discharge-side inner space. | ||||||
| 25 | Fluid rotating apparatus | US988694 | 1992-12-10 | US5354179A | 1994-10-11 | Teruo Maruyama; Tatsuhisa Taguchi; Yoshikazu Abe; Mikio Hasegawa |
| A fluid rotating apparatus according to the present invention is designed to promptly achieve an extremely high degree of vacuum from atmospheric pressure by its single apparatus. Moreover, high-speed synchronous rotation of the rotary shafts of the apparatus is controlled by use of a rotary position detecting sensor, to thereby avoid control through mechanical contact thereof with a gear or the like. In addition, hydrostatic bearings are employed for supporting the rotary shaft to avoid mechanical abrasion and the use of lubricant oil. | ||||||
| 26 | Multi-shaft driving apparatus and fluid rotary apparatus | US070038 | 1993-06-01 | US5329216A | 1994-07-12 | Mikio Hasegawa; Teruo Maruyama |
| A multi-shaft driving apparatus includes a plurality of motors each for rotating one of a plurality of shafts to be synchronously rotated, an encoder, provided for each motor, for detecting a rotational state of the shafts, a pulse generator for generating a pulse signal for rotating the shafts, and a motor control circuit, provided for each motor, for inputting the pulse signal generated by the pulse generator for rotating the shafts and a pulse signal detected by the encoder and used as a feedback signal. The motor control circuit has a PLL control section and a rotational angle phasing section so that a rotational angle phasing control loop is generated to perform a rotational angle phasing operation by the rotational angle phasing section so to as place the shafts in position at a driving start and after performing the rotational angle phasing operation, a rising and steady control loop is generated to perform an operation from a rise state to a steady state by the PLL control section. A fluid rotary apparatus includes a plurality of rotors accommodated in a housing, a plurality of shafts each for rotating one of the rotors to be synchronously rotated, and a fluid drawing opening formed in the housing and a fluid discharge opening formed therein, in addition to the structure of the multi-shaft driving apparatus so that the volume change of a space formed by the rotors or by the rotors and the housing is utilized to draw and discharge fluid. | ||||||
| 27 | Fluid-rotating apparatus | US011314 | 1993-01-29 | US5314312A | 1994-05-24 | Yoshihiro Ikemoto; Teruo Maruyama |
| A fluid-rotating apparatus comprises a positive displacement pump structure section for rotating the rotary shaft of each of a plurality of rotors synchronously. In controlling the synchronous rotation of the rotary shafts by a PLL control method, a gain-switching means device is provided to set a high gain in a PLL control circuit when the rotary shafts are accelerating or decelerating and setting a low gain therein when the rotary shafts are rotating in a steady state. | ||||||
| 28 | System to Pump Fluid and Control Thereof | US15756942 | 2016-09-01 | US20180291895A1 | 2018-10-11 | Thomas Afshari |
| A fluid-driven actuator system includes a fluid-driven actuator and at least one proportional control valve and at least one pump connected to the fluid-driven actuator to provide fluid to operate the fluid-driven actuator. The at least one pump includes at least one fluid driver having a prime mover and a fluid displacement assembly to be driven by the prime mover such that fluid is transferred from the pump inlet to the pump outlet. The fluid driven actuator system also includes a controller that establishes at least one of a speed and a torque of the at least one prime mover to adjust at least one of a flow in the fluid system to a flow set point and a pressure in the fluid system to pressure set point and a concurrently establishes an opening of the at least one proportional control valve to adjust at least one of the flow to the flow set point and the pressure to the pressure set point. | ||||||
| 29 | Screw pump | US14409002 | 2013-06-12 | US09845803B2 | 2017-12-19 | Heiner Kösters; Jörg Temming |
| The invention relates to a screw pump having two screws, in which screw pump each screw has a first thread and a second thread. The threads extend in each case from a suction side to a delivery side. The threads are in engagement with one another, with the result that the threads are divided into a plurality of working chambers, the volume of which decreases from the suction side to the delivery side. According to the invention, the threads have two thread turns. Moreover, the invention relates to a screw for a pump of this type. On account of the uniform distribution of mass of the two-turn threads, the pump can be operated at a high rotational speed, with the result that the throughput of the pump is increased. | ||||||
| 30 | LINEAR ACTUATOR ASSEMBLY AND SYSTEM | US15315592 | 2015-06-02 | US20170114807A1 | 2017-04-27 | Thomas AFSHARI |
| A linear actuator system includes a linear actuator and an integrated pump assembly connected to the linear actuator to provide fluid to operate the linear actuator. The integrated pump assembly includes a pump with two fluid drivers, each fluid driver comprising a prime mover and a fluid displacement assembly to be driven by the prime mover such that fluid is transferred from a first port of the pump to a second port of the pump. The pump assembly also includes two valve assembles to isolate the pump from the system. The linear actuator system also includes a controller that establishes the pump in a normal mode of operation in which the prime movers are independently driven and switches to a fail-safe mode of operation in which only one prime mover is operated. | ||||||
| 31 | PUMP INTEGRATED WITH TWO INDEPENDENTLY DRIVEN PRIME MOVERS | US14944368 | 2015-11-18 | US20160138588A1 | 2016-05-19 | Thomas AFSHARI |
| A pump having at least two fluid drivers and a method of delivering fluid from an inlet of the pump to an outlet of the pump using the at least two fluid drivers. Each of the fluid drives includes a prime mover and a fluid displacement member. The prime mover drives the fluid displacement member to transfer fluid. The fluid drivers are independently operated. However, the fluid drivers are operated such that contact between the fluid drivers is synchronized. That is, operation of the fluid drivers is synchronized such that the fluid displacement member in each fluid driver makes contact with another fluid displacement member. The contact can include at least one contact point, contact line, or contact area. | ||||||
| 32 | Pump integrated with two independently driven prime movers | US14637064 | 2015-03-03 | US09228586B2 | 2016-01-05 | Thomas Afshari |
| A pump having at least two fluid drivers and a method of delivering fluid from an inlet of the pump to an outlet of the pump using the at least two fluid drivers. Each of the fluid drives includes a prime mover and a fluid displacement member. The prime mover drives the fluid displacement member to transfer fluid. The fluid drivers are independently operated. However, the fluid drivers are operated such that contact between the fluid drivers is synchronized. That is, operation of the fluid drivers is synchronized such that the fluid displacement member in each fluid driver makes contact with another fluid displacement member. The contact can include at least one contact point, contact line, or contact area. | ||||||
| 33 | SCREW-TYPE POSITIVE DISPLACEMENT MACHINE | US14400614 | 2013-05-27 | US20150098853A1 | 2015-04-09 | Didier Müller; Théodore Iltchev |
| A screw-type positive displacement machine includes a housing with a first rotor and a second rotor which are mounted to rotate in the housing and which are driven in directions which are the opposite of one another. The positive displacement machine has a first motor and a second motor arranged in a drive casing and connected to the housing in such a way that the first rotor is driven by the first motor and the second rotor is driven by the second motor. Typically, the first motor and/or the second motor is an asynchronous motor. | ||||||
| 34 | SCREW VACUUM PUMP | US13698691 | 2010-05-13 | US20130058823A1 | 2013-03-07 | Tadahiro Ohmi; Isao Akutsu |
| A screw vacuum pump includes a male rotor, a female rotor, a stator, and a drive motor/motors. A screw gear portion of the male rotor, a screw gear portion of the female rotor, and the stator cooperatively form a gas working chamber. The stator has an inlet port and an outlet port. At least one of the male rotor and the female rotor has a rotor hollow portion which is opened on at least one end face side in a rotation-axis longitudinal direction of the male rotor and/or the female rotor. The drive motor is at least partially received in the rotor hollow portion. | ||||||
| 35 | Gear pump having a multishaft drive and method of operating same | US09963558 | 2001-09-27 | US06447256B2 | 2002-09-10 | Maurice Bussard |
| A gear pump having two meshing gears which are each assigned to a shaft and which are each driven by a driving unit. The driving units are controllable by a control unit such that the shafts rotate at a definable angular velocity. The control units have a symmetrical construction, and a control device provided in each control unit, each control device being connected to the other by way of a data line. | ||||||
| 36 | Displacement machine for compressible media | US09619600 | 2000-07-19 | US06359411B1 | 2002-03-19 | Heiner Kösters; Guido Keller |
| A displacement machine for compressible media has at least two shafts with rotors which are designed as helical profile bodies. During rotation, the profiles intermesh like gears and run free of contact relative to one another. The lead of the helical profile bodies decreases from the inlet end to the outlet end and have a double-start design, with the leads at the inlet end and outlet end of the helical profile bodies being constant, and the intermediate lead decreasing continuously from the larger lead at the inlet end to the smaller lead at the outlet end. | ||||||
| 37 | Screw spindle vacuum pump and operating method | US09445705 | 1999-12-09 | US06273696B1 | 2001-08-14 | Heiner Kösters; Christian Dahmlos |
| Screw-spindle vacuum pump with at least three closed-off feed chambers located one behind the other along each rotor and method for operating this compressor. The chamber which is last on the delivery side is brought virtually to the compression limit pressure by means of pre-admission, shortly before it opens towards the delivery side, by supplying a pre-admission stream which is at least five times as great as the intake mass stream. A precondition, in this case, is a minimum ratio of external compression to internal compression of five. | ||||||
| 38 | Evacuating apparatus having interengaging rotors with threads having a decreasing pitch at the exhaust side | US939816 | 1997-09-29 | US5951266A | 1999-09-14 | Teruo Maruyama; Akira Takara; Yoshikazu Abe; Yoshihiro Ikemoto |
| An evacuating apparatus includes a first pump section disposed on a suction opening side, a second pump section for exhausting a smaller amount of gas than the first pump section, the second pump being disposed in an exhaust opening side, a plurality of rotors accommodated in a housing, bearings for supporting rotation of the rotors, a suction opening for drawing fluid and a first exhaust opening thereof both formed on the housing, and a plurality of motors for driving the rotors. In the apparatus, the first pump section is a pump of positive displacement type formed by utilizing a volume change of a space defined by the rotors and the housing, and the second pump section is a viscous-type pump formed by utilizing a relatively moving surface formed in a small gap defined between the rotors and the housing. | ||||||
| 39 | Screw fluid machine and screw gear used in the same | US815955 | 1997-03-13 | US5836754A | 1998-11-17 | 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. | ||||||
| 40 | Vacuum pump having lubrication and cooling systems | US539219 | 1995-10-04 | US5836746A | 1998-11-17 | Teruo Maruyama; Yoshikazu Abe; Akira Takara; Yoshihiro Ikemoto |
| A positive displacement vacuum pump, in which a plurality of rotors are driven into synchronous operation by independent motors, uses a rotational position sensor making use of the electromagnetic induction effect for obtaining rotational position information for the individual shafts. The rotational position sensor is cooled. | ||||||
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