|| List of recent Vacuum Pump-related patents
|Device for vacuum treatment of wounds|
A device for vacuum treatment of wounds, the device having a disposable canister for receiving a suctioned wound exudate, and a vacuum pump. The disposable canister is designed to partially enclose the vacuum pump, which is inserted into the canister, and to thereby fix it against movements in non-inserting directions.
|Method for producing high-purity calcium|
The present invention provides a method for producing high-purity calcium, the method being characterized by the following: performing first sublimation purification by introducing calcium starting material having a purity, excluding the gas components, of 4n or less into a crucible of a sublimation vessel, subjecting the starting material to sublimation by heating at 750° c. To 800° c., and causing the product to deposit (evaporate) onto the inside walls of the sublimation vessel; and then, once the calcium that has been subjected to first sublimation purification is recovered, performing second sublimation purification by introducing the recovered calcium again to the crucible to the sublimation vessel, heating the recovered calcium at 750° c.
|Separation and extraction of hydrocarbons from source material|
Systems and methods for extracting recoverable materials from source materials are provided. Source materials are introduced into a furnace.
|Vacuum pump suction filter meant for collecting impurities from function|
A method and system wherein the fluid stream from an object to be evacuated is filtered before it enters into a vacuum pump with a purity of equal to or greater than 99% and a particle size of 0.3 microns or less, with minimum pressure difference, is provided, thereby improving pump life cycle and process performance.. .
|Air permeability apparatus|
An air permeability apparatus has a test head with an opening, a vacuum pump, a clamping arm and an orifice disk that is rotatable around its central axis. The orifice disk is arranged between tubes and the vacuum pump and has a plurality of orifices.
|Vacuum pump with abatement function|
A vacuum pump includes a vacuum pump having a discharge port to which an abatement part for treating an exhaust gas discharged from the vacuum pump to make the exhaust gas harmless is attached. The vacuum pump includes a cylindrical member having an exhaust gas introduction port for introducing the exhaust gas to be treated and a gas outlet port for discharging gases which have been treated, a plurality of fuel nozzles provided at a circumferential wall of the cylindrical member for ejecting a fuel, and a plurality of air nozzles provided at the circumferential wall of the cylindrical member for ejecting air so as to form a swirling flow of air along an inner circumferential surface of the circumferential wall.
|Methods and systems for maintaining a high vacuum in a vacuum enclosure|
A system for maintaining a high vacuum in a vacuum enclosure such as cryostat, for example, is described. The system includes a high-vacuum pump having an input that is connected to the cryostat and an output.
Provided is a vacuum pump in which the flexing of a rotating cylinder made of a fiber-reinforced resin can be reduced as much as possible to sufficiently reduce the gap between the rotating cylinder and a fixed cylinder, and exhaust performance can thereby be improved to great effect. A vacuum pump comprising a thread groove pump portion equipped with a fixed cylinder portion (2) having a spiraling thread groove portion (1) provided in an internal peripheral surface, and a rotating cylinder portion (3) placed inside the fixed cylinder portion (2), the thread groove pump portion exhausting through a spiraling exhaust flow channel due to the rotating cylinder portion (3) being caused to rotate, and the exhaust flow channel being formed from the thread groove portion (1) and an external peripheral surface of the rotating cylinder portion (3).
|Vacuum pump connecting apparatus and method for installing vacuum pump connecting apparatus|
A vacuum pump connecting apparatus has a first vibration absorbing portion and a second vibration absorbing portion which are connected to an evacuation connection portion so as to dispose the first vibration absorbing portion and the second vibration absorbing portion opposite each other via the evacuation connection portion. The first vibration absorbing portion is connected to an intake port of a vacuum pump at a second end of the first vibration absorbing portion opposite to a first end of the first vibration absorbing portion connected to the evacuation connection portion.
|Vacuum pump with abatement function|
A vacuum pump has an abatement part for treating an exhaust gas discharged from a chamber of a manufacturing apparatus to make the exhaust gas harmless. The vacuum pump includes a heat exchanger configured to heat an inert gas by using heat generated when the exhaust gas is treated to be made harmless in the abatement part.
|Multi-stage vacuum pump|
A multi-stage vacuum pump may include a sealing arrangement for sealing between the stator components of the pump. The end seals of the arrangement comprise an annular portion for sealing between end stator components and shell components and axial portions which extend from the annular portion and together with separate axial seals seal between the shell components..
|Liquid-ring vacuum pump and impeller for a liquid-ring vacuum pump|
A liquid-ring vacuum pump comprises a pump casing and an impeller that is eccentrically mounted in the pump casing. The impeller is made of a material having a modulus of elasticity of less than 4000 n/mm2..
|Cryopump and vacuum pumping method|
A cryopump includes a first cryopanel including a radiation shield and a plate member across a shield opening and a second cryopanel enclosed by the first cryopanel and cooled to a lower temperature than that of the first cryopanel. The plate member includes a plate main portion and a plate peripheral portion adapted to attach the plate main portion to the radiation shield.
|Cryopump and method for vacuum pumping non-condensable gas|
A cryopump includes: a radiation shield that includes a shield front end that defines a shield opening, a shield bottom portion, and a shield side portion that extends between the shield front end and the shield bottom portion; and a cryopanel assembly that is cooled to a lower temperature than that of the radiation shield. The cryopanel assembly includes a first panel arrangement including a plurality of first adsorption panels and a plurality of second panel arrangements each including a plurality of second adsorption panels.
|Vacuum assisted dehydration system|
A vacuum assisted dehydration system including a vacuum chamber, a gas compressor, a heating coil, and a vacuum pump is provided. A sealing member removably attached to an opening of the vacuum chamber is opened to introduce one or more instruments into the vacuum chamber.
A cleaning system used for removing contaminant particles on a surface of an image sensor is provided. The cleaning system includes an gas blower, two plate electrodes parallel to each other, and a high frequency voltage source.
|Portable regulated pressure devices for medical procedures|
In various embodiments of the invention, a vacuum pump can be used as a stand alone unit to create, monitor and control a vacuum in a variety of surgical procedures. The vacuum pump can be controlled by a processor and automatically increases or decreases the vacuum based on monitoring of parameters selected from the group consisting of heart-rate of the fetus, heart rate of the mother, heart rate of patient, blood pressure of the fetus, blood pressure of the mother and blood pressure of the patient, position of the wound, position of the fetus, condition of the fetus, condition of the mother, condition of the patient.
|Therapeutic apparatus and therapeutic method|
A therapeutic apparatus, which treats fatigue of the whole body, is provided. A plurality of speakers/sensors which apply an oscillating pressure to a subject are provided.
|Semiconductor annealing method utilizing a vacuum environment|
A semiconductor annealing method and system uses a vacuum pump to produce a vacuum environment in the annealing chamber to thereby remove undesired gas element influences. A control system obtains pressure and temperature measurements from the annealing chamber to control operation of the heating elements and vacuum pump to thereby maintain process integrity..
|Apparatus and methods for reducing particles in semiconductor process chambers|
Embodiments of the present disclosure generally provide various apparatus and methods for reducing particles in a semiconductor processing chamber. One embodiment of present disclosure provides a vacuum screen assembly disposed over a vacuum port to prevent particles generated by the vacuum pump from entering substrate processing regions.
An estimating section detects a signal including counter electromotive voltage information of the motor, and estimating a magnetic pole electric angle and a rotational speed of the motor. A driving current controller repeats generation and cut-off of the driving current supplied from a power supply to the motor via the inverter circuit or regenerated from the motor to the power supply in a low-speed period between a stopped state and a predetermined rotational speed in an accelerating operation at a motor starting time or a decelerating operation at a motor stopping time.
A vacuum pump comprises an exhaust portion having a plurality of rotating blade portions arranged in multiple stages, each of the rotating blade portions having a plurality of rotor blades, and a plurality of stationary blade portions arranged between the rotating blade portions, in which outer circumferential rims are supported via spacers, each of the stationary blade portions having a plurality of stator blades. In at least one stationary blade portion among the plurality of stationary blade portions, a blade height on the inner circumferential side of the plurality of stator blades provided in the stationary blade portion is set to be smaller than a blade height on the outer circumferential side, and the stationary blade portion is supported by the spacers in such a manner that the inner circumferential side of the stationary blade portion is floated up toward an intake port side..
|Selectively modifiable layer for alteration of appearance or texture|
A movable robotic structure including a frame or substrate, an outer skin connected to at least a portion of the frame and a vacuum source in fluid communication with the outer skin. The vacuum source, such as a vacuum pump, is activated to pull the outer skin into engagement with an outer surface of the frame.
|X-ray tube comprising field emission type electron gun and x-ray inspection apparatus using the same|
An x-ray tube and an x-ray inspection apparatus using the x-ray tube have improved workability of the baking for obtaining an ultra-high vacuum of the x-ray tube having a field emission type electron gun, and have stable performance. The x-ray tube includes a field emission type electron gun chamber, an electron beam aperture, an x-ray target and a vacuum pump in one body with a vacuum sealing structure (vacuum tube section).
|Method and device for recycling water vapor evaporated from coal drying with vacuum condensing process|
A method is provided for purifying and recycling water vapor from a coal drying process and device which employ temperature reduction and dehumidifying, a flash distillation, and vacuum condensation. With a condensed tower, a high humidity exhaust gas is preliminarily lowered in temperature, and condensed water of 5˜60° c.
A coating apparatus including an evaporation part, a thermal decomposition part, a deposition chamber, a vacuum pump, and a discharge pipe. The deposition chamber includes an upper portion, a lower portion facing the upper portion, and a sidewall portion connecting the upper portion and the lower portion to each other and including an inlet, first outlet, a second outlet, a third outlet and a fourth outlet.
Each of the stationary blade portions is formed by two or more divided stationary blade portions, and has abutting ends in both circumferential ends, the stationary blade portion is formed by abutting the abutting ends of the divided stationary blade portions with each other. Each of the divided stationary blade portions has an outer circumferential rim nipped by the spacers, an inner circumferential rim positioned in a front end on the inner circumferential side of the stationary blade portion, and a plurality of stator blades formed between the outer circumferential rim and the inner circumferential rim.
|Device and method for removing gas from a mixture of biomaterials|
A device and method for removing gas from a mixture of biomaterials includes a vacuum pump movably positioned within a cavity of a syringe at least partially defining a vacuum chamber. The vacuum pump has a pump body with proximal and distal portions, a stopper connected to the distal portion, and a flow channel.
|Process for obtaining highly pure methane from biogas, and plant for carrying out the process|
A process and a plant for obtaining highly pure methane from biogas where biogas coming from a fermenter is compressed and fed to at least one membrane unit having a selectively permeable membrane, which provides a product gas stream containing an elevated proportion of methane and a gas stream containing a reduced proportion of methane. A quality sensor may be arranged in the outlet line for the highly pure product gas.
|Chemical analysis instrument with multi-purpose pump|
A mass spectrometer for analyzing a sample may include an analysis chamber for analyzing the sample and a first vacuum pump operably connected to the analysis chamber, wherein the first vacuum pump operates to create a first vacuum state. The mass spectrometer may also include a sample-preparation chamber operably connected to the analysis chamber and a second vacuum pump that operates to create a second vacuum state, wherein the first vacuum state is a lower pressure than the second vacuum state.
A reactor tank is provided having an enzyme inlet, a heating jacket positioned around the exterior center of the tank, a gas outlet communicating with a vacuum apparatus and a condensing unit, a first gas inlet for receiving gas from a feed tank and a first liquid outlet for recirculating the liquid back to the feed tank. The tank further includes a sparged unit connected to the first gas inlet for receiving gas from the feed tank and a screen positioned between the sparged unit and the first liquid outlet.
|Electric vacuum pump|
In an electric vacuum pump, a pump housing and a lower-end cover member respectively include positioning retainers respectively formed on outer peripheries of the pump housing and the lower-end cover member. A case includes positioning retainers each protruding inward from an inner peripheral surface of the case.
A vacuum pump has at least one side passage pump stage which comprises a side passage bounded by at least one stator element and having a coolant circuit for cooling the vacuum pump with a coolant, wherein the coolant circuit has at least one coolant passage for the side passage pump stage which is bounded at least regionally by the stator element.. .
|Film-forming apparatus and film-forming method|
A film-forming apparatus (100) includes: a vacuum chamber (30) configured to store a substrate (34b) in which a through-hole is formed and a source of copper emission (35b); a vacuum pump (36) configured to decompress an interior of the vacuum chamber (30) to a predetermined degree of vacuum; a power supply (80) configured to generate electric power applied to the substrate (34b); and a driving mechanism for use in setting a distance between the substrate (34b) and the source of copper emission (35b). When a copper material emitted from the source of copper emission (35b) is deposited on one main surface of the substrate (34b) to block an opening of the through-hole in the one main surface by means of a deposited film formed of the copper material, a blocked state of the opening blocked by the deposited film is adjusted based on the distance and the electric power..
|Positive crankcase ventilation system|
A positive crankcase ventilation system for an internal combustion engine (ice) includes an engine crankcase, an intake manifold disposed in downstream gas flow communication with the engine crankcase, an air induction system disposed in upstream gas flow communication with the engine crankcase, and a vacuum pump disposed in gas flow communication between the air induction system and the engine crankcase. Operation of the vacuum pump facilitates air flow from the air induction system to the engine crankcase, and from the engine crankcase to the intake manifold..
|Apparatus for medical sterilization using plasma|
The present invention relates to an apparatus for sterilization which may be applied to a medical dry sterilizer, and more particularly, to an apparatus which injects hydrogen peroxide so as to generate plasma and oh radicals which are effective in sterilization, so as to achieve the sterilization of a treated object. According to the present invention, the apparatus for sterilization comprises: a sterilizing reactor in which sterilization is performed on a treated object; a vacuuming unit which is equipped with a vacuum pump connected to the sterilizing reactor and which vacuumizes the interior of the sterilizing reactor; a hydrogen-peroxide supply unit which supplies hydrogen peroxide in a gas state to the interior of the sterilizing reactor; and a microwave-plasma generating unit which generates plasma using microwaves.
|Vacuum pump with rotor-stator positioning to provide non-return|
A rotary-vane vacuum pump comprises a stator and a vaned rotor, the stator partly defining an outlet chamber and including an outlet passage opening to the outlet chamber. The rotor is rotatably sealed to the stator; it has a sealing area to block the outlet passage, and, an unsealing area alignable with the outlet passage by rotation of the rotor to periodically unblock the outlet passage.
|Vacuum pump motor rotor, motor including same and vacuum pump|
In order to provide a motor rotor in which a permanent magnet is prevented from corroding, wherein a motor rotor for use in a motor for driving a pump rotor rotating shaft of a vacuum pump is provided which comprises a rotor core made up of a plurality of steel plates which are laminated in an axial direction and having a through hole, a permanent magnet which is disposed in the through hole, and end plates which are attached individually to axial end portions of the rotor core, wherein an adhesive is applied to a whole surface of each of the plurality of steel plates, and the plurality of steel plates are surface joined to each other and to the end plates via the adhesive.. .
|Stator member and vacuum pump|
To provide a stator member that facilitates thermal radiation from a surface thereof and thermal conduction to an adjacent member, and a vacuum pump that contains the stator member. For the purpose of enhancing heat dissipation of a rotor portion, surface treatment removal processing is performed on a predetermined section of a thread groove spacer in order to efficiently release heat of the thread groove spacer toward a base and a stator blade spacer.
A vacuum pump, in particular to a turbomolecular pump, has a pump inlet, a pump outlet and a pump space for a gas to be pumped arranged between the pump inlet and the pump outlet, and at least one cooling gas inlet for a cooling gas for cooling the vacuum pump, the pump further having one or more hollow regions for the cooling gas connected in a gas conducting manner to the cooling gas inlet and arranged outside the pump space, wherein the or each hollow region is bounded by at least one component of the vacuum pump to be cooled.. .
|Method and system for cleaning a vacuum chamber|
A system and method are described, for use in cleaning of a vacuum chamber. The method comprising connecting a vacuum chamber to a plasma generating unit via a plasma connection port and connecting the vacuum chamber to a high vacuum pumping unit via a pumping port.
|Control device for internal combustion engine|
An electronic control device for controlling an internal combustion engine reduces operation amounts of a high-pressure fuel pump and a vacuum pump, which are auxiliary devices driven by drive force of an intake camshaft, when a rotor of a variable valve timing mechanism is rotated to a lock phase in the phase advancing direction at the engine starting. Thus, the rotor rotates to the lock phase quickly and is fixed to the lock phase..
|Cryopump and method of operating the cryopump|
A cryopump includes a high-temperature cryopanel, a low-temperature cryopanel, and a cooling system. The cooling system has: a refrigerator provided with a first stage for cooling the high-temperature cryopanel and a second stage for cooling the low-temperature cryopanel; and a control unit configured to control a cool-down operation in which the first stage and the second stage are cooled in order to initiate a vacuum pumping operation of the cryopump.
|Method for fastening a cover plate to a frame structure|
A method for fastening a cover plate (6) to a frame structure (1) formed on the cover plate (6) is to easily and rapidly allow the erection of faces that are stable and durable in the long term and simultaneously, in the case of vacuum insulating panels, allow particularly good preservation of the vacuum in the panels. For this purpose, the frame structure (1) comprises a cavity (12), a number of channels (2) connecting the cavity (12) to the surface (4) and an opening (8) to connect a vacuum pump (10), the vacuum pump (10) being connected to the opening (8) and put into operation, the cover plate (6) being arranged on the surface (4) above the channels (2), and the cover plate (6) being fixed to the surface (4)..
|Vacuum pump/ air and gas compressor|
A pump housing for a pump/compressor includes a front portion and a back portion. The front portion includes an opening forming a motor bearing pocket for seating a motor bearing and through which a motor shaft extends towards the back portion, at least one vent hole radially outwardly spaced from the opening for cooling, and a protrusion extending outward from the front portion, wherein the protrusion is configured to locate a motor housing.
A vacuum pump for generating an underpressure has a pump chamber (14, 15) with an inlet (143) and an outlet (150), wherein the outlet (150) is equipped with a valve (3). According to the invention, the pump chamber (14, 15) is provided with a pressure sensor (23, 23′, 24).
|Integrated lower-plate glass and manufacturing method of vacuum multi-layer glass including same|
Disclosed are an integrated lower-plate glass which comprises a lower layer glass plate; a rim part which is formed with a certain height along an edge portion of the lower layer glass plate; a getter which is configured to absorb moisture and gas generating from the space part after the space part is vacuumed; at least one getter insertion part which is formed at one side of the upper layer glass plate holding part, the getter being inserted into the getter insertion part; and an exhaust pipe one end of which is connected to the getter insertion part, and the other end of which is connected to a vacuum pump for thereby making the space part become a vacuum state.. .
|Device for suction of liquids and/or particles from body orifices|
The invention relates to a device for suction of liquids and/or particles from body orifices, wherein the device comprises a suction channel (16) through which the liquid and/or particles can be aspirated and a vacuum pump (14) for generating an underpressure in the suction channel (16). The suction channel (16) is provided with an opening for supplying additional air for adjusting the underpressure, wherein the volume flow of this additional air is adjustable via an additional air adjustment unit (24).
|Rotary systems lubricated by fluid being processed|
Rotary systems are described, which can include at least one of compressors and vacuum pumps. Each rotary system includes a corresponding piston that rotates in an orbital motion around a respective eccentric of a shaft in order to either compress fluid or function as a vacuum pump.
|Magnetic bearing device and vacuum pump|
A predetermined timing is a timing at which the sampling timing is in a vicinity of a maximum peak position of the carrier wave signal and a timing at which the sampling timing is in a vicinity of a minimum peak position. The demodulation arithmetic section outputs, as the demodulation calculated result, a value d3 calculated with d3=(d1−d2)/2 when a data value of the digital signal sampled in the vicinity of the maximum peak position is denoted by d1 and a data value of the digital signal sampled in the vicinity of the minimum peak position is denoted by d2..
|Vacuum pump mounting structure|
There is provided a vacuum pump mounting structure. A vacuum pump is connected to an axial end portion of a first cam shaft of an engine and is configured to be driven by the first cam shaft.
|Magnetic bearing device and vacuum pump|
A magnetic bearing device comprises a controller configured to obtain magnetic levitation information of the rotor shaft by ad sampling of current detection signals from the plurality of current sensors and a sum signal obtained by adding the pair of current detection signals relating to the pair of electromagnets, and perform pwm control of the excitation amplifiers based on the magnetic levitation information. The controller performs pwm control so that a length of one of an on-duty period and an off-duty period of the pwm carrier signal is always longer than a predetermined time period based on an attenuation characteristic of a spike noise produced in the electromagnetic current, and performs the ad sampling after the predetermined time period passes from starting timing of one of the on-duty period and the off-duty period..
|Method of coating of and/or applying lacquer on magnetic rings of a rotor magnetic bearing, rotor magnetic bearing, and vacuum pump|
A method of at least one of coating of and applying lacquer on magnetic rings of a rotor magnetic bearing mounted on the rotor, includes arranging of the magnetic rings (4) of the magnetic bearing on the rotor (1) at a location (3) provided for the magnetic rings (4), and coating of and/or applying lacquer on exposed surfaces (10) of the magnetic rings (4), respectively. The rotor includes magnetic rings arranged thereon or therein and coated or having lacquer applied thereon in accordance with the above-described method, and a vacuum pump includes such a rotor..
|Motor driving device and vacuum pump|
A motor driving device comprises a first arithmetic section calculating a rotational speed and a magnetic pole electrical angle of a motor rotor, a current command setting section setting a d-axis current command and a q-axis current command in a rotating coordinate dq system based on a difference between the rotational speed and a target rotational speed, a driving command generating section generating a sinusoidal wave driving command based on the d-axis current command, the q-axis current command, the rotational speed and the magnetic pole electrical angle and a pwm signal generating section. When the rotational speed has a positive value indicating a positive rotational state, the current command setting section sets the q-axis current command of acceleration driving, and when the rotational speed has a negative value indicating a reverse rotational state, the current command setting section sets the q-axis current command of deceleration driving..
|Exhaust system and apparatus for fabricating semiconductor device|
An aspect of one embodiment, there is provided an exhaust system includes a vacuum pump exhausting first gas, a trap bottle having a cylindrical shape, a sidewall of the trap bottle being configured to move in a circumference direction, and a first pipe connecting between the vacuum pump and the trap bottle, the first pipe having a tilt angle in an axis direction of the cylindrical shape, the first gas flowing in the first pipe from the vacuum pump to the trap bottle.. .
|Purge phase for cryoablation systems|
A method for purging a cryotreatment system, in particular, for clearing moisture and thus preventing ice blockages within a fluid flow path that may be formed when moisture pockets within the fluid flow path of the system are encountered by a first injection of refrigerant at the beginning of a cryotreatment procedure. The method may include injecting refrigerant from a refrigerant source into a fluid delivery conduit at a preselected pressure for a first period of time, the refrigerant flowing from the fluid delivery conduit through a fluid injection element and into a fluid recovery conduit, and evacuating refrigerant from the fluid recovery conduit by vacuum pressure generated by the vacuum pump for a second period of time.
|Multi-stage vacuum pump of the dry pump type|
A multi-stage vacuum pump of the dry pump type is disclosed. The multi-stage vacuum pump includes a plurality of pumping stages each respectively having an inlet and an outlet, the pumping stages being mounted in series between a suction port and a discharge port of the vacuum pump, characterized in that the vacuum pump also includes at least one valve configured to dump pressure from a pumping stage, said valve being arranged in the upper part of the vacuum pump, on the same side as the inlet of the pumping stage..
|Spiral pumping stage and vacuum pump incorporating such pumping stage|
A spiral pumping stage includes both centripetal and centrifugal pumping channels, so that the gas is pumped from the periphery to the center of the pumping stage throughout a first group of pumping channels and it is pumped from the center to the periphery of the pumping stage throughout a second group of pumping channels. Thanks to this inventive arrangement, both the gas coming from a previous pumping stage or a main pump inlet arranged upstream the pumping stage according to the invention and the gas coming from the additional side inlet can be effectively pumped by the pumping stage according to the invention..
|Rotary vacuum pump|
A rotary vacuum pump includes a first set of pumping stages having rotor discs with a first diameter and a second set of pumping stages having rotor discs with a second different diameter and further comprising an intermediate pumping stage that is particularly adapted for matching the change in the diameter of the pump rotor discs. According to the invention, the intermediate pumping stage comprises a rotor disc having an outer portion in the radial direction that is axially tapered from its inner diameter to its outer diameter and a corresponding stator stage including a spacer ring that is axially tapered from its periphery toward its center..
A vacuum pump has an exhaust portion in which rotating blade portions and stationary blade portions are laminated in multiple stages. Each of the plurality of stator blades in one stage of the stationary blade portion is three-dimensionally connected to the stationary blade portion main body by an inner circumferential side support portion on the inner circumferential end side, and three-dimensionally connected to the stationary blade portion main body by an outer circumferential side support portion on the outer circumferential end side, and a cutout is provided in a circumferential front end of the outer circumferential side support portion..
|Motor driving device and vacuum pump|
A motor driving device comprises an inverter, a first arithmetic section, a driving command generating section and a pwm signal generating section. The first arithmetic section calculates a rotational speed and a magnetic pole electrical angle of a motor rotor based on information about a motor phase voltage and information about a motor phase current.
|Container, dispensing device, and method of dispensing goods|
A container having openings on an inside surface, in which the openings are for use with a vacuum pump for retaining a liner within the container while the contents of the container are being dispensed.. .
|Reduced-pressure sources, systems, and methods employing a polymeric, porous, hydrophobic material|
Reduced-pressure sources, systems, and methods involve using a vacuum pump that is disposed within a sealed space to produce reduced pressure. The exhaust from the vacuum pump is exhausted from the sealed space through pores in an enclosure member that is made of a polymeric, porous, hydrophobic material.
|Device and method for cleaning nasal cavities|
A device for cleaning nasal membranes comprising a head that is inserted into a nostril. Fluid is pumped from a reservoir stored in a body of the device onto the membrane.
|Vibration damper for vacuum pumps|
In a vibration damper of a turbomolecular vacuum pump, a vacuum tightness function and a vibration damping function are both performed by one ore more toroidal rings made of an elastic material. The elastic rings assume a resting configuration while the vacuum pump is not operating and the damper is at atmospheric pressure, and they assume a compressed configuration while the vacuum pump is operating and the damper is under vacuum conditions.