CN1812680A - Radiation transmissing device with bearing and manufacturing method thereof - Google Patents
Radiation transmissing device with bearing and manufacturing method thereof Download PDFInfo
- Publication number
- CN1812680A CN1812680A CNA2005101047491A CN200510104749A CN1812680A CN 1812680 A CN1812680 A CN 1812680A CN A2005101047491 A CNA2005101047491 A CN A2005101047491A CN 200510104749 A CN200510104749 A CN 200510104749A CN 1812680 A CN1812680 A CN 1812680A
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- China
- Prior art keywords
- anode
- support
- chamber
- axle
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
- H01J35/08—Anodes; Anti cathodes
- H01J35/10—Rotary anodes; Arrangements for rotating anodes; Cooling rotary anodes
- H01J35/101—Arrangements for rotating anodes, e.g. supporting means, means for greasing, means for sealing the axle or means for shielding or protecting the driving
- H01J35/1017—Bearings for rotating anodes
- H01J35/1024—Rolling bearings
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Rolling Contact Bearings (AREA)
- Sealing Devices (AREA)
- Sealing Of Bearings (AREA)
Abstract
The invention relates to an X- ray tube which is provided with a bearing cylinder and a method for manufacturing. The tube is provided with a shell which generates X-ray. A cathode, an anode which is located in opposite to the cathode and rotated around a shaft (7) and a fixed anode shaft support (11) are arranged in the shell, wherein the support is a fixed cavity (12) and the anode shaft is fixed in the cavity. The support is a moveable tubular shape. The support is provided with ball bearings (26, 28). The cavity of the support is filled with gallium-indium-tin alloy and is provided with tight sealing devices (18, 19) which are used to prevent the alloy from leaking from the cavity on a shaft outlet.
Description
With reference to related application
According to the regulation of 35 USC 119 (a)-(d), the application requires the priority of the french patent application No.04 53133 of submission on December 21st, 2004, and its full content is hereby incorporated by.
Technical field
One embodiment of the present of invention are radiation transmissing devices, have for example equipped the X-ray tube and the manufacture method thereof of the rotating anode tube with bearing.One embodiment of the present of invention can be used for medical science takes a picture, and can also be used for lossless detection and control field when using the high-energy radiation transmitter.
Background technology
For example in radiology, the X-ray is produced by the electron tube of having equipped the anode that pivots.The electronic impact anode that the highfield that produces between negative electrode and anode makes cathode emission produces the X-ray.For this X-ray, positive polarity is applied on the anode along its axle, and negative polarity is applied on the negative electrode.Described equipment is mainly by insulating trip or the insulation of electron tube housing.This housing can by glass part make.
When described pipe used under upper state, the collision of electronics can make anode produce the abnormal heating effect on anode.If described energy is too high, collision hole indenture may be degenerated and be covered with to the emitter track of anode.Overheated in order to prevent this class, anode manufactures rotation and appears in face of the electron stream so that bring in constant renewal in the surface of constantly cooling off.The axle that therefore motor of pipe drives anode rotates freely in mechanical bearing.Described axle is arranged in the anode cavities.Anode cavities self forms in the support of anode.On the one hand, bearing is supported that by anode-supported on the other hand, it supports anode shaft again.
In practice and when commercial scale is made, bearing is by forming with the standard ball bearing of the paired ratio of the magnetic bearing of a small amount of application.The metal coating that the problem that rotarting anode produces originates from ball during the axle rotation of bearing weares and teares fast.Useful life, the result was about 100 hours, and the pipe that is about 6 months to 1 year life cycle is provided.Can metallizing for overcoming these problem balls, plumbous or silver-colored with the form of thin layer.
In order to reduce the too early wearing and tearing of metal level, lubricating film places between ball and the bearing surface, on the interface between bearing and the anode shaft.Inner gallium-indium-tinbase the liquid of filling in chamber.Choose such liquid and be because it improves coefficient of friction, reduces the collision noise between the ball and increase because the heating of anode or by convection current or by the mode of the conducting heat transmission to standing part.Usually do not select other lubricating fluid, because their exhaust performance is not good.
The use of gallium-indium-kamash alloy has been proved to be the root of trouble.In fact, this alloy becomes liquid under ambient temperature (from 10 degree beginnings Celsius), and one to contact with air be rapid oxidation.This oxide is solid-state and is the shape of skin covering of the surface in the short time at about one to two minute utmost point.This means that any plant-scale processing to this liquid must some precautionary measures under neutral atmosphere or vacuum.In addition, this film does not have lubrication property, really F-from it.And gallium has highly corrosive.If such mixture is handled, even in the laboratory, liquid may be spread out maybe and may be spilt or overflow, and produces hollow or precipitation on treatment surface.In space that white for example cleans, especially (in the shell at pipeline) next will remove very difficulty of all these hollows or precipitation in the system in manufacture process.Even rust is wiped, it can reappear in the position that just cleans out (but not thorough) with other brown rust in several seconds.Thereby the state in space does not satisfy the quality requirement of making.
Thereby difficulty has two classes: the processing of alloy itself in laboratory or factory, and during pipeline is made under vacuum the mode of its insertion bearing.Thereby, although it works to the lubricated of the related bearing of ball with bearing, the purity of this liquid may As time goes on degenerate and finally under the situation of ball coating without any effect.
At present with in the future in order to improve diagnosis, the power that electron tube needs constantly raises.The raising of power makes the weight of anode be increased to the 6-8 kilogram.Therefore, the effect in the bearing becomes crucial.Thereby, just using with regard to the computer camera of the continuous rotation of 2 revolution per seconds, bearing is subjected to the acceleration of about 8G.The rotating speed of 3 to 4 revolution per seconds is expected.Therefore, the useful life of bearing, and therefore useful life of described pipe, subsidiary described ball and described liquid will be limited in time.In fact, if because occur generating heat and friction with bearing is inner, described liquid may be lost its characteristic and also therefore lose its quality.
Three kinds of main restrictions must be further satisfied in rotating anode use.The first, the rotation of anode must be free as far as possible and abundant, and dynamically balanced simple solution must plan to prevent that pipe from shaking when anode rotates.The second, anode must be able to bear high voltage (usually, the ball bearing of steel satisfies this purpose).The 3rd, the heat that the collision of electronics produces on the plate target and in axle, spread and must effectively discharge.
JP-A-5258691 has described a kind of ball bearing by the lubricated device of gallium alloy.Yet this device does not satisfy above-mentioned restriction.In fact since the major diameter of rotor balance is very difficult there, heat discharges by undersized fixed axis and produces, and does to improve the design of heat and conductivity.
US 6125168 discloses a kind of gallium alloy that wherein only uses and has improved heat conducting X-ray tube.US6160868 also provides with gallium alloy and improves thermal conductivity.US 6377658 belongs to same type, and US 6192107 is same.US 4943989 provides the cooling of anode itself.Because heat, US 3719847 provides a kind of vaporization to return to liquid liquid metals then.US 2003/0165217 only provides thermal shunt.
Summary of the invention
One embodiment of the present of invention are a kind of radiation transmissing device, and for example the X-ray tube comprises a housing, wherein produces radiation.Be furnished with negative electrode in the housing and over against negative electrode and the anode that pivots, and a fixing anode shaft supports.This support comprises lock chamber, and anode shaft is fixed in the chamber.This is supported for removable tubular.This support has ball bearing.Support chamber filling liquid lubricant, for example gallium-indium-ashbury metal.This chamber is provided for the device that prevents that alloy from leaking from the chamber at axial outlet, and this device is, for example the pressurizing window device.
One embodiment of the present of invention are a kind of rotarting anode to be fixed on for example method of X-ray tube of radiation transmissing device.This method comprises provides the anode shaft that is fixed in the anode-supported chamber.In the chamber, set up vacuum.Anode cavities filling liquid lubricant under vacuum, gallium-indium-ashbury metal for example, and therefore form a tube.Described tube is fixedly mounted on radiation transmissing device for example in the X-ray tube.
Description of drawings
Because following description and accompanying drawing will make embodiments of the invention more clearly understand.Provide these figure never to limit the scope of the invention for expression.About these figure:
Fig. 1 is the schematic sectional view according to the X-ray tube of one embodiment of the invention; With
Fig. 2 is the sectional view according to the tube of one embodiment of the invention.
List of parts
X-ray tube 1
Anode track 8
Anode-supported 11
Bearing or slipper 13
Jack 16
Seal shape 20
Two over against radial surface 21 and 22
Axle 23
Border 24
First ball bearing 26
Second ball bearing 28
Raceway 29 and 30
Hold-down nut 31
Screw thread 32
The last shaft shoulder 33
Support ring 34
Two screws 39 and 40
Embodiment
For addressing these problems and satisfying these requirement for restriction, one embodiment of the present of invention provide the tube that is used for the X-ray tube.In one embodiment of the invention, anode-supported forms a tube that takes out and replace easily.Tube comprises with ball bearing and is installed in anode shaft in the chamber of fixed support.When it for example was installed on the computer camera device, the high centrifugation accelerates power that these bearings and pipe are subjected to matched very much.For improving rotation, ball wherein no longer needs to make with steel, but available pottery (in an example is silicon nitride) with very low coefficient of rolling resistance is made.So no longer power supply that provides by ball and heat discharge by fluid lubricant for example gallium-indium-tin liquor body metal alloy provide.The inner anode axle is immersed in the alloy in the chamber of tube.Whole chamber is full of alloy.For filling, before injecting alloy, at first the chamber is vacuumized.In the time of on being fixed to pipe, removable anode is fixed on an end of anode shaft.
In one embodiment of the present of invention, whole axle will be immersed in the alloy of fluent material, and the tightening seal in chamber is generated by the pressurizing window device that is positioned over the axial outlet place simultaneously.
Fig. 1 represents the X-ray tube 1 according to one embodiment of the invention.Pipe 1 has housing 2.For example, housing 2 is by wall 3 restrictions of pipe 1.Pipe 1 also has rotarting anode 4.Rotarting anode 4 is arranged so that like this over against negative electrode 5.It in the housing 2 of pipe 1 motor 6 that drives anode 4 rotations.Anode 4 has anode shaft 7.Negative electrode 5 is arranged so that like this over against anode track 8.When anode 4 applied high voltage, electronics escaped from negative electrode 5, and under the effect of highfield impinge anode track 8.Under effect of impact, the anode track 8 radiation X-rays 9 that form by X-ray emission material.Ray 9 is passed in the window 10 that forms in the wall 3 and discharges from managing 1.Window 10 is made by for example glass or X-ray permeable material.It seals.The housing 2 of such formation is under the conventional vacuum, special aspirating hole (not shown) by clogging with obturator subsequently.
Be holding anode 4 rotations, pipe 1 provides anode-supported 11.Support 11 be hollow and possess chamber 12.In chamber 12, bearing or slipper 13 are kept anode 4 by supporting 11.In order to solve the lubricated and heat transfer problem during anode 4 rotations, fluid lubricant for example gallium-indium-tin liquor body alloy is filled chamber 12.12 passages of drawing 15 make chamber 12 be filled from the chamber in increase.Filling may be carried out before or after back, anode shaft location, axle 7 dynamic equilibrium.If the dynamic equilibrium of axle 7 is carried out before filling, it is better controlled.May use bottle to fill chamber 12 then by gravity or injection.The position of tamper in passage 14 or simple stopper or obstacle provide the tightening seal on the filling face.
Fig. 2 represent the axle 7 by bearing fixing in chamber 12.At outlet 15 places of axle 7, have a jack 16 or normally a fixing or restraint device design be used for admitting anode.Anode can be fixed subsequently, for example just before wall 3 is closed.At outlet 15 places, fixed support 11 is fixed on the associative ring 17, for example passes through screw.Ring 17 can comprise that the groove 18 of O-ring is to provide tightening seal.Tightening seal can obtain by two kinds of compensation processes.At first, for vacuum seal, when anode shaft was no longer rotated, the gap that is in perpendicular to ring 17 positions 19 between ring 17 internal diameters and axle 7 external diameters was defined.The border in this gap is fixed by the surface tension of the gallium-indium-tin liquor body metal alloy on axle 7 and ring 17 materials.This alloy possesses low humidity and surface tension provides one of about percentage mm clearance, helps effective rotation of axle 7, and satisfies the commercial scale situation easily.Ring 17 is fixing when axle 7 rotations.
When axle 7 rotations, the pressure of liquid alloy increases.Alloy is easy to overflow and pollute the shell of pipe from chamber 12.In this case, for alloy being limited in the chamber 12, contacted ring 17 surfaces or in zone 19 axle 7 surfaces vertical with ring 17, possess helical form fluctuating feature.In order to make axle 7 provide sense of rotation, the pitch of spiral is positioned in the surface and points to its performance of helical form fluctuating in the past like scraper.Such scraper tends to alloy is back into chamber 12.
In the embodiment shown, be supported on this place, space and possess two relative concentric surface.The surface that is connected in axle is surface 19, and another surface is connected in the support by encircling 17.Surface 19 is connected in axle and goes up and be positioned to be connected in the surface of support.As shown in Figure 1, axle 7 can possess the shape of sealing 20.Very important gap can obtain in the position of sealing shape 20.It can spiral rise and fall feature be separately fixed at ring 17 and axle 7 two over against radial surface 21 and 22 on, these fluctuating features possess alloy are back into same effect in the chamber 12.
Comprise axle 7 at the removable tube shown in Fig. 2, its design further helps industrial-scale operation.With axle 23 is the axle 7 at center, has a succession of hole or begin to have a plurality of steps from jack 16 in stopping the shaft shoulder.First hole 19 of diameter maximum is configured to over against ring 17.Ring 17 is fixed on around the axle 7 like this when assembling.At 24 places, border of ring 17, axle 7 possesses first shaft shoulder 25.From stop member 25 beginnings, axle 7 possesses the body supports part of diameter less than face 19 diameters.First ball bearing 26 and second ball bearing 28 are installed on this body supports part, and preferred the pressure installed.Two bearings 26 and 28 are separated from each other by cylindrical bush 27 along axle 7.Lining 27 is accurately put into the free part in chamber 12.The heart therein, lining 27 stay free space (wherein filling with alloy subsequently).Each bearing 26 and 28 has for example 29 and 30 raceway, and its design is used for respectively bearing on the one hand near axle 7 on the other hand near supporting 11.Raceway 29 keeps relative rotation by axle 7 with support 11 respectively with 30.
Hold-down nut 31 is screwed on the screw thread 32 of axle 7.Screw thread 32 is arranged on an end 36 of axle 7.Terminal 36 with that end that jack 16 is being set vis-a-vis.Screw thread 32 can be arranged on after the last shaft shoulder 33 of axle 7.This last shaft shoulder 33 is not indispensable.Nut 31 is supported support ring 34.Ring 34 pushes encircle raceway 30 to 17.Pushing away lining 27 equally by safety collar 35 (preferably possessing identical diameter and profile) raceway 30 with lining 27.Lining 27 is pushing away the raceway 30 of bearing 26 equally.In the end 36, helical spring 37 rests are on the rear portion 38 of support 11 in axle 7.Perforation 14 is left from this rear portion 38.
Especially dispose axle 7 such being arranged in the chamber 12 of installing of spring 37.Axle is fixed to ring 17 on the supporter 11 once placing two screws 39 and 40 like this.Preferably, the width of raceway 29 is slightly less than the width of raceway 30, thereby these raceways 29 are placed to neither against the shaft shoulder 25 also not against support ring 34.Therefore, axle 7 can rotate freely.When screw 39 and 40 was screwed into, lining 27 was fixing by ring 17 and ring 32.
Preferably, bearing 26 and 28 ball are not to make with steel but make with pottery, for example silicon nitride, Si
3N
4Or be called Rex20/Si
3N
4Composite alloy.These balls have the particular prospect of very high coefficient of rolling resistance.If desired, bearing 26 and/or 28 raceway 29 and/or 30 are also made by pottery.Especially these balls also may be used for the clamping ring bearing.Therefore, the dynamic equilibrium of the axle of tube can be carried out in the past making chamber 12 be in vacuum and be full of alloy.Because the selection of ball material, make the axle needed this balance of 7 high speed rotating even may be not with lubricator.In addition, balance may be carried out later at placement adjusting lubricant, cleans then, and this mode is seldom used.Preferably, being equilibrated at anode is fixed under axle 7 the situation and carries out.
If must be under the neutral atmosphere situation, 14 to bleed by boring a hole, balance is once realizing setting up vacuum in chamber 12.It may utilize a triple valve that a cock respectively is installed that gallium-indium-tin liquor body metal alloy is injected or utilizes gravity to make it 14 flow to chamber 12 by boring a hole once setting up vacuum.Then, chamber 12 is closed, for example the valve by injecting in advance.Negative capillary result is that equipment is by tightening seal.If desired, the alloy amount of injection just in time meets the volume (owing to the existence of axle 7, bearing 26,28 and lining 27 reduces) in chamber 12.The complete submerged member of liquid alloy: bearing 26 and 28 is immersed in the alloy.Alloy has filled up the whole space between lining 27 and axle 7 and spring 37 shells.
Tube once make good anode 7 can be installed and be fixed on manage on 1 the wall, for example pass through screw.Because alloy is the good conductor of heat and electricity, satisfies all restrictive conditions.
In addition, although one embodiment of the present of invention have been described relevant exemplary embodiments, one of ordinary skill in the art will appreciate that and to carry out various variations, and its element can be equal to replacement under the situation that does not depart from scope of the present invention and extension function and/or method and/or effect.In addition, also many changes can be carried out so that particular surroundings or material adapt to enlightenment of the present invention and do not depart from its essential scope.Therefore, think that the present invention is not subject to the specific embodiment of implementing optimal mode description of the present invention as imagination, fall into the interior embodiment of accessory claim scope but the present invention includes all.And any order or importance are not represented in the use of first, second term such as grade, but first, second term such as grade is used for some elements or feature and other element or feature are differentiated or rather.Thereby the logarithm quantitative limitation is not represented in the use of (a), terms such as (an), but expression possesses at least one element of mentioning or feature or rather.
Claims (13)
1, a kind of radiation transmissing device (1) comprising:
A housing (2) wherein produces radiation;
A negative electrode (5), one are positioned at over against negative electrode and support (11) around the anode (4) of axle (7) rotation and a fixing anode shaft and be arranged in housing;
Described support comprises the lock chamber (12) that is removable tubular;
Anode (4) axle (7) is fixed in the chamber (12);
Described support has ball bearing (26,28);
Described chamber (12) filling liquid lubricant; And
Described chamber is provided for the device (18,19) that prevents that fluid lubricant from leaking from the chamber.
2, equipment as claimed in claim 1, wherein fluid lubricant is gallium-indium-ashbury metal.
3, equipment as claimed in claim 1, wherein ball bearing comprises ceramic balls.
4, as one of them described equipment of claim 1 to 3, wherein ball bearing comprises ceramic bearing.
5, as one of them described equipment of claim 1 to 4, wherein ball bearing comprises clamping ring.
6,, wherein leave the place, exit position of support, because the described support of the surface tension gap of lubricant is littler than the natural gap of fluid lubricant stream in anode shaft as one of them described equipment of claim 1 to 5.
7, as one of them described equipment of claim 1 to 6, wherein leave the place, exit position of support in anode shaft, support with helical form or spirality fluctuating feature is the pitch of locating like this, makes it back into described chamber to fluid lubricant when anode rotates.
8, as one of them described equipment of claim 6 to 7, wherein leave the place, exit position of support in anode shaft, support has two relative concentric surface, a surperficial connecting axle, another surface connects to be supported, and the surface of connecting axle is positioned at and connects the interior surface that supports.
9, as one of them described equipment of claim 6 to 8, wherein leave the place, exit position of support in anode shaft, support has two relative concentric surface, a surperficial connecting axle, another surface connects to be supported, and it is outside that the surface of connecting axle is positioned at the surface that connects support.
10, a kind of anode is fixed on the method for radiation transmissing device, comprises:
One anode shaft that is fixed on inside, anode-supported chamber is provided;
Vacuum is provided in the chamber;
The filling liquid lubricant is to form tube in the chamber under vacuum; And
Described tube is fixedly mounted in the described equipment.
11, the method described in claim 10 comprises:
Before the filling liquid lubricant of chamber, fixedly being balanced of chamber inner anode axle.
12, as one of them described method of claim 10 to 11, comprising:
Not with lubricator, the fixing of chamber inner anode axle just is not balanced.
13, as one of them described method of claim 10 to 12, comprising:
Before tube was fixed in the equipment, anode just was fixed on the axle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0453133A FR2879809B1 (en) | 2004-12-21 | 2004-12-21 | X-RAY TUBE WITH PERFECTED BEARING CARTRIDGE AND METHOD OF MANUFACTURE |
| FR0453133 | 2004-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1812680A true CN1812680A (en) | 2006-08-02 |
Family
ID=34952742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005101047491A Pending CN1812680A (en) | 2004-12-21 | 2005-12-21 | Radiation transmissing device with bearing and manufacturing method thereof |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2006261096A (en) |
| CN (1) | CN1812680A (en) |
| DE (1) | DE102005061235A1 (en) |
| FR (1) | FR2879809B1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022440A (en) * | 2010-10-31 | 2011-04-20 | 无锡开普动力有限公司 | Sealing device of engine rotating shaft |
| CN105508442A (en) * | 2016-01-29 | 2016-04-20 | 西门子爱克斯射线真空技术(无锡)有限公司 | Bearing assembly of X-ray tube and X-ray tube with bearing assembly |
| CN106935462A (en) * | 2013-03-15 | 2017-07-07 | 尼康计量公众有限公司 | X-ray source, high-voltage generator, electron beam gun, rotation target assembly, rotary target and rotating vacuum seals part |
| WO2019041233A1 (en) * | 2017-08-31 | 2019-03-07 | Shenzhen United Imaging Healthcare Co., Ltd. | Radiation emission device |
| CN111664190A (en) * | 2019-03-05 | 2020-09-15 | 株式会社捷太格特 | Rolling bearing device and assembling method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2922357A1 (en) | 2007-10-12 | 2009-04-17 | Gen Electric | X-RAY TUBE |
| JP6926997B2 (en) * | 2017-12-05 | 2021-08-25 | 株式会社ジェイテクト | Bearing housing and rolling bearing equipment |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4914684A (en) * | 1989-03-31 | 1990-04-03 | General Electric Company | Titanium carbide coating of bearing components |
| US5204890A (en) * | 1990-10-01 | 1993-04-20 | Kabushiki Kaisha Toshiba | Rotary anode type x-ray tube |
| JP3228992B2 (en) * | 1992-03-10 | 2001-11-12 | 光洋精工株式会社 | X-ray tube device |
| US5875227A (en) * | 1997-09-08 | 1999-02-23 | General Electric Company | X-ray tube rotor and stator assembly |
| EP0966019B1 (en) * | 1998-06-19 | 2004-04-28 | Koyo Seiko Co., Ltd. | Rotating anode x-ray tube capable of efficiently discharging intense heat |
| US6160868A (en) * | 1999-03-09 | 2000-12-12 | General Electric Company | X-ray tube apparatus employing liquid metal for heat removal |
| US6377658B1 (en) * | 2001-07-27 | 2002-04-23 | General Electric Company | Seal for liquid metal bearing assembly |
-
2004
- 2004-12-21 FR FR0453133A patent/FR2879809B1/en not_active Expired - Fee Related
-
2005
- 2005-12-16 JP JP2005363222A patent/JP2006261096A/en not_active Withdrawn
- 2005-12-20 DE DE102005061235A patent/DE102005061235A1/en not_active Withdrawn
- 2005-12-21 CN CNA2005101047491A patent/CN1812680A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022440A (en) * | 2010-10-31 | 2011-04-20 | 无锡开普动力有限公司 | Sealing device of engine rotating shaft |
| CN106935462A (en) * | 2013-03-15 | 2017-07-07 | 尼康计量公众有限公司 | X-ray source, high-voltage generator, electron beam gun, rotation target assembly, rotary target and rotating vacuum seals part |
| CN106935462B (en) * | 2013-03-15 | 2018-11-02 | 尼康计量公众有限公司 | X-ray source, high-voltage generator, electron beam gun, rotation target assembly, rotary target and rotating vacuum seals part |
| CN105508442A (en) * | 2016-01-29 | 2016-04-20 | 西门子爱克斯射线真空技术(无锡)有限公司 | Bearing assembly of X-ray tube and X-ray tube with bearing assembly |
| WO2019041233A1 (en) * | 2017-08-31 | 2019-03-07 | Shenzhen United Imaging Healthcare Co., Ltd. | Radiation emission device |
| US10825637B2 (en) | 2017-08-31 | 2020-11-03 | Shanghai United Imaging Healthcare Co., Ltd. | Radiation emission device |
| US11361930B2 (en) | 2017-08-31 | 2022-06-14 | Shanghai United Imaging Healthcare Co., Ltd. | Radiation emission device |
| CN111664190A (en) * | 2019-03-05 | 2020-09-15 | 株式会社捷太格特 | Rolling bearing device and assembling method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102005061235A1 (en) | 2006-06-29 |
| FR2879809A1 (en) | 2006-06-23 |
| JP2006261096A (en) | 2006-09-28 |
| FR2879809B1 (en) | 2007-02-16 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20060802 |