CN1447014A - Equipment with magnetic power engaging connector for transferring power to vehicle fan - Google Patents
Equipment with magnetic power engaging connector for transferring power to vehicle fan Download PDFInfo
- Publication number
- CN1447014A CN1447014A CN03106848.0A CN03106848A CN1447014A CN 1447014 A CN1447014 A CN 1447014A CN 03106848 A CN03106848 A CN 03106848A CN 1447014 A CN1447014 A CN 1447014A
- Authority
- CN
- China
- Prior art keywords
- equipment according
- equipment
- fan
- bearing
- power
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 239000000110 cooling liquid Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000010248 power generation Methods 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 abstract description 5
- 239000006247 magnetic powder Substances 0.000 abstract description 2
- 239000002826 coolant Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 239000000659 freezing mixture Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 244000045947 parasite Species 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
- F16D37/02—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive the particles being magnetisable
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
- F16D2037/002—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive characterised by a single substantially axial gap in which the fluid or medium consisting of small particles is arranged
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A device used for transferring power to fans (1) for cooling coolant in motor vehicle or the like comprises a mechanism (11; 111) used for supporting said device, a mechanism (12; 112) used for generating power, a mechanism (20) used for transferring power, at least one rotor (30) connected to the fans (1), at least one connector used for connecting the rotor (30) to the mechanism (20) used for transferring power, and at least one mechanism (41) used for producing an adjustable magnetic field, wherein the engagement connector is of the type with magnetic powder particles (60a).
Description
Technical field of the present invention
The present invention relates to a kind of being used for the equipment of transmission of power to fan, this equipment includes a magnetic joiner (magnetic-powder coupling), and wherein, described fan is used for the cooling liquid of motor vehicle is cooled off.
Description to related art
With to the splendid attire technical field that the cooling liquid in the radiator is cooled off in motor vehicle in be well known that, air pressure need be delivered on the radiator, so that more apace heat is lost to the external world from liquid, described pressurised gas flow is rotated and obtains by ordering about a fan, this fan is installed on crankshaft or the driven shaft usually, carry a pulley on the described driven shaft, this pulley can receive power from one by initiatively shaft-driven belt.
Known also have, described fan must be made into only just to begin rotation when reaching a predetermined water temperature, this predetermined temperature is detected by means of a thermostat, and this thermostat can be controlled a magnetic clutch, and this magnetic clutch closure can make fan begin rotation.
Say in more detail, be used for motor vehicle fan must can:
In order under the external world situation of low temperature, to cool off, be rotated with a speed that is lower than transmission shaft;
When external temperature is higher or in the process of using under abominable situation, be rotated with the speed identical with transmission shaft, wherein, described abominable situation can cause engine overheat;
Under the very low situation of temperature, be rotated with zero-speed, that is to say that fan does not rotate or is in idling conditions with respect to transmission shaft, under the very low situation of described temperature, need not further cooling or or even harmful.
Especially because climate condition also needs fan to be rotated with a speed that is higher than power generation axle sometimes.
In the process of attempting these performance characteristic of acquisition, developed the engagement systems of mixed type, have electromagnetism operation type friction clutch and based on the driving joiner (drive coupling) that uses parasite current, described parasite current produces by making a conducting element be rotated near permanent magnet.
Although can carry out their function, because not allowing fan gently not start with not allowing to reduce, these known equipment are not used to obtain the required magnet numbers of Expected Results, so there is narrow limitation in these equipment on function.
The technical problem of Ti Chuing is thus; a kind of equipment that is used for rotating power is passed to fan is provided; wherein; described fan is used for the freezing mixture of motor vehicle is cooled off; this equipment is driven by single actuator; and allow described fan to be rotated with a plurality of revolutions, these revolutions can be controlled and adjust according to the actual cooling requirement of motor, thereby also are included in the ability that keeps described fan to shut down under the low-down situation of external temperature.
In the scope of this problem, a further demand is that described equipment must be controlled by means of the temperature of direct perception freezing mixture, and allows mode of operation is carried out manually and selection automatically, also must have less radial and axial size in addition.
According to the present invention, these technical problems were solved transmission of power to the equipment of fan by a kind of being used for, and wherein, described fan is used for the freezing mixture of motor vehicle etc. is cooled off, and this equipment comprises: the device that is used to support this equipment; Be used to produce the device of power; The whirligig that is used for transferring power; At least one rotor is used for fan is connected to the device that is used for transferring power; And at least one can produce the equipment of an adjustable magnetic fields, wherein, is used for realizing between transmission rotor and power transmitting deice the described joiner that engages belonging to the type that includes magnetic.
Summary to accompanying drawing
Further details can be from obtaining the description of the present invention's one non-limiting example, wherein with reference to the accompanying drawings:
Accompanying drawing 1 shows a cross section, and this cross section is along a radial plane according to first exemplary embodiment of power transmission device of the present invention;
Accompanying drawing 2 shows a cross section that is similar to accompanying drawing 1, and this cross section belongs to second exemplary embodiment according to equipment of the present invention;
Accompanying drawing 3 also shows a cross section that is similar to accompanying drawing 1, and this cross section belongs to the 3rd exemplary embodiment according to equipment of the present invention;
Accompanying drawing 4 also shows a cross section that is similar to accompanying drawing 1, and this cross section belongs to the 4th exemplary embodiment according to equipment of the present invention;
Accompanying drawing 5 also shows a cross section that is similar to accompanying drawing 1, and this cross section belongs to the 5th exemplary embodiment according to equipment of the present invention.
Detailed description of the preferred embodiment
As shown in the accompanying drawing 1, be used for the equipment of transmission of power to cooling fan 1 is comprised, a power generating part spare 10, this power generating part spare 10 is made of a supporting element 11, this supporting element 11 extends and is coupling on the running shaft 12 along axial direction, therefore together rotate with running shaft 12, wherein, described running shaft 12 is such as the axle that is water pump.
A swivel assembly 20 that is used for transferring power is coupling in rotary support member 11 by means of a therebetween damping member 13, described assembly 20 mainly is made of a mitriform element 21, and this mitriform element 21 is made into a radial component 21a and a circle shape part 21b who extends vertically.
In the inside part of its axial extension parts 21b, mitriform element upper support an annulus 23, and this annulus 23 is made by magnetizable material, and its purposes will be learnt hereinafter.
A multilayer (ladder-type) bearing 50 also is installed on the rotary support member 11, on the described bearing 50 carrying remain to be rotated driving fan 1, be used for fan 1 with transfer unit 20 articulate transmission rotors 30 and the electromagnetic assembly 40 that is used to activate, control, regulate the engagement joiner.
In more detail, bearing 50 includes a clutch shaft bearing ring 51 that is bonded on the supporting element 11, one the second middle bearer ring 52 and the 3rd bearer ring 53 in an outside.
Also separated along axial direction by an insulating component 32a by the circular edge 32 that magnetisable material is made, described insulating component 32a can interrupt the magnetic property at described edge 32 along axial direction.
As shown in Figure 1, except providing a supporting role by the outer collar bearing on the bearing 50 53, electromagnet 41 in the assembly 40 also is arranged in the inboard of flange 31, and is fixed on the fixed component 43 by means of a suitable connection set 42.
Between the circular edge 32 of joiner 30 and the annulus 23 in the power transfer assembly 20, have a radial air gap 60b, this air gap 60b is connected with a container 60 that is loaded with magnetic 60a, magnetic 60a remains in the container 60 by means of a pair of lip type 61a Sealing 61, and form the engagement joiner, the working procedure of this engagement joiner will be illustrated below, wherein, described that is arranged on the opposite flank of rotor 30 lip-type seal spare 61.
Be the working principle of described equipment below:
Under normal working condition, supporting element 11 rotates driving consistently by axle 12, and coupling mitriform element 21 thereon also together rotates with this supporting element 11;
Under the situation shown in the accompanying drawing 1, can see that also electromagnet 41 is by means of stablizing excitation by 100 control units that schematically identify, so that produce a magnetic field, the magnetic field flux line that is schematically identified by F is able to closure by means of the circular edge 32 of joiner and the annulus 23 on the mitriform element 21.
This will make magnetic 60a magnetize, and magnetic 60a is called back in the air gap between edge 32 and the annulus 23;
Magnetic 60a makes edge 32 and annulus 23 relative engagements, and makes flange 31 be subjected to rotation thus to drive, and fan 1 begins rotation, and wherein, described flange 31 is connected on the fan 1 by means of the jack shaft carrier ring 52 on the bearing 50;
By means of control unit 100, can utilize big/less voltage/current to encourage electromagnet 41, thereby cause magnetic that big/less magnetization phenomenon takes place, along radially making edge 32 strengthen/weaken with relative engagement between the annulus 23, thereby thereby make edge 32 and annulus 23 or engagement fully-directly power is passed to fan 1 from axle 12, make fan 1 be rotated-or slide relative with identical revolution, that is to say that fan 1 is to be rotated than axle 12 little revolutions with axle 12.
By regulating the energy of electromagnet is supplied with, can be regulated the rotating speed of fan according to the work requirements of reality thus, actual work requirements depends on the outside situation of vehicle or the special status relevant with user mode (climbing or descending).
At last, interrupt the energy supply of electromagnet is caused the magnetic demagnetization, the engagement between interrupted edges 32 and the annulus 23 thus causes rotatablely moving of fan to be deadlocked.
In aforementioned cyclic process, lip-type seal spare 61 moves as follows:
Reach a specific rotating speed until flange 31, lip 61a elasticity always is pressed against on this flange 31, and 60a seals for magnetic;
In case magnetic has been magnetized and thus under the effect of magnetic flux absorption and be retained in the air gap, flange 31 has reached a specific rotating speed simultaneously, centrifugal force will promote lip 61a so that it away from flange, rubs thereby avoid contacting generation owing to wiping is moving.
On the contrary, along with the decline of rotating speed, lip 61a will return elastically with flange and come in contact, thereby once more magnetic will be closed, and this moment, the magnetic force of magnetic disappeared.
Accompanying drawing 2 shows second exemplary embodiment according to equipment of the present invention.
In this case, what can find out is that the equipment 140 that is used to produce magnetic field comprises an electromagnet 41 and a permanent magnet 145, this permanent magnet 145 can produce one such as the magnetic field that is used for magnetizing fully magnetic 60a, so that between edge 32 and annulus 23, form engagement fully, and keep fan 1 stable rotation.
The excitation effect meeting of electromagnet 41 produces an opposing magnetic field, and it is relative with the magnetic field of permanent magnet 145 that this opposing magnetic field is tending towards, and causes between edge 32 and the annulus 23 slide relative taking place, and makes the rotating speed of fan descend.
By electromagnet is fully encouraged, the magnetic field of permanent magnet 145 is all offset, and causes fan 1 to pause.
In this case, three kinds of working conditions and realize thus the rotation of fan is regulated as can be seen, the another one advantage is simultaneously, under the situation that takes place to interrupt at electric current supply, still can be guaranteed all working ability of fan by the magnetic field that permanent magnet produces.
Accompanying drawing 3 shows another exemplary embodiment of described equipment.
In this case, supporting element 111 is fixed on the pedestal 111a of motor, and produces power by a pulley 112, and this pulley 112 is connected on the actuation gear on the crankshaft by means of a belt 112a.This actuation gear can also be made into and can many times of revolutions be passed to fan with respect to crankshaft, and when working with direct drive pattern with this equipment of box lunch, fan has a plurality of revolutions that are higher than crankshaft.
Although do not illustrate, but can find out that still supporting element 111 can constitute (dotted line) by a coaxial extension on the engine crankshaft, in this case, although owing to the reason of bearing 113 can produce inappreciable influence to the power that is used for fan 1, it still can correspondingly rotate.
Accompanying drawing 4 shows the 4th exemplary embodiment of described equipment, and in this case, this equipment can make the rotating speed of fan 1 be higher than the rotating speed that power produces axle 12.
In this case, supporting element 11 is a rotation type, and joiner 330 separates with fan 1, and replacing is installed on the bearing 15 that is bonded on the supporting element 11.Flange 321 has a 321a of axial extension portion, the 321a of this axial extension portion is supporting inner bearing collar 51 and the smooth front piece 336 on the bearing 50, the planet carrier 351 of a planetary pinion 350 is installed on this front piece 336, and the planet wheel 352 of this planet carrier 351 acts on respectively:
The 353a of tooth portion on the mitriform element 353, described mitriform element 353 is bonded on the outer collar bearing 53 of bearing 50, and is carrying fan 1;
In the tooth portion 354 (sun gear of planetary system), this tooth portion 354 is fixed on the jack shaft carrier ring 52 of bearing 50, and in this case, jack shaft carrier ring 52 also is coupling on the fixing-assembly of electromagnet 41.
In this structure, the effect of planetary pinion 350 is to allow the rotating speed of fan to increase with respect to the rotating speed that power produces axle 12, makes pressurised gas flow increase, perhaps in order to produce identical air-flow, reduce the size of fan, and reduce to be used to drive the required moment of this fan thus.
As for remaining part, it is similar with the working procedure of having described with reference to accompanying drawing 1 (not having permanent magnet) or accompanying drawing 2 (having permanent magnet) that the working procedure of this equipment keeps.
At last, accompanying drawing 5 shows such an embodiment, and wherein as can be seen, electromagnet 541 is placed in a radial outside position with respect to joiner 30.
Because the working procedure of this equipment is quite analogous to other example of having described, so here will no longer repeat, these are conspicuous for the skilled artisan in the art.
It must be noted that in all exemplary embodiments of being described, electromagnet all belongs to static types, that is to say with respect to rotary component and fixes.
Although can draw a kind of structure that also has rotary magnet,, have wearing and tearing, spark and similar problem, so be not preferred because it need use rectifier and relevant rotation contact brush.
Claims (26)
1. be used for the equipment of transmission of power to fan (1), wherein, described fan (1) is used for the cooling liquid of vehicle and similar device is cooled off, and this equipment comprises:
Be used to support the device (11 of this equipment; 111); Be used to produce the device (12 of power; 112); The device (20) that is used for transferring power; At least one is connected the rotor (30) on the fan (1); At least one joiner is used for rotor (30) and the device (20) that is used for transferring power are joined together; And at least one is used to produce the equipment (41) of an adjustable magnetic fields, and it is characterized in that: described engagement joiner belongs to the type that includes magnetic (60a).
2. equipment according to claim 1 is characterized in that: the described equipment that is used to produce an adjustable magnetic fields is static.
3. equipment according to claim 1 is characterized in that: the described equipment that is used to produce an adjustable magnetic fields is electromagnet (41).
4. equipment according to claim 1 is characterized in that: it includes a permanent magnet (145).
5. equipment according to claim 1 is characterized in that: described support device (111) is fixed.
6. equipment according to claim 1 is characterized in that: described support device (11) can rotatablely move.
7. equipment according to claim 1, it is characterized in that: described power transmitting deice is made of a mitriform element (20), this mitriform element (20) has one and power generation arrangement (11,111) radial component of one (21a) and a circle shape part (21b) that extends along axial direction.
8. equipment according to claim 7 is characterized in that: the inner part (23) at the circular edge (21b) of described mitriform element (21) is made by magnetisable material.
9. equipment according to claim 1 is characterized in that: described engagement rotor (30) includes a flange (31), and this flange (31) has one along axially extended circular edge (32).
10. equipment according to claim 9 is characterized in that: described circular edge (32) is made by magnetisable material.
11. equipment according to claim 10 is characterized in that: described circular edge (32) is broken by a magnetic insulation component (32a) along axial direction.
12. equipment according to claim 9 is characterized in that: described circular edge (32) is arranged into the annulus (23) that is parallel on the mitriform element (20), and forms an air gap (60b) between them.
13. equipment according to claim 1 is characterized in that: it includes a multi-layer bearing (50), this multi-layer bearing (50) and support device (11; 111) become one.
14. equipment according to claim 13 is characterized in that: described bearing (50) has one and is bonded to support device (11; 111) inner bearing collar on, one with the jack shaft carrier ring (52) of rotor (30) one and one outer collar bearing (53) with the equipment that is used to produce adjustable magnetic fields (41) one.
15. equipment according to claim 14 is characterized in that: described inner bearing collar (52) is also carrying fan (1).
16. equipment according to claim 1 is characterized in that: described magnetic (60a) is contained in the container (60).
17. equipment according to claim 16 is characterized in that: described container (60) is limited by pair of seal members (61) and forms, and this is arranged between mitriform element (21) and the rotor (30) Sealing (61).
18. equipment according to claim 17 is characterized in that: described Sealing is lip-type seal spare (61a).
19. equipment according to claim 1 is characterized in that: described engagement joiner (20) includes an epicyclic train (350).
20. equipment according to claim 19 is characterized in that: the planet carrier (351) in the described epicyclic train (350) becomes one with rotor (30), and together rotates with this rotor (30).
21. equipment according to claim 19 is characterized in that: the mitriform element (353) in the described epicyclic train becomes one with the outer collar bearing (53) of fan (1) and bearing (50).
22. equipment according to claim 19 is characterized in that: the center of described epicyclic train is made of a tooth portion (354), and the jack shaft carrier ring (52) on this tooth portion (354) and the bearing (50) forms one.
23. according to claim 19 described equipment, it is characterized in that: the jack shaft carrier ring (52) on the described bearing (50) also is coupling in the equipment (41) that is used to produce magnetic field.
24. equipment according to claim 1 is characterized in that: the described equipment (41) that is used to produce adjustable magnetic fields is positioned at the radially inner side of power transmitting deice (20).
25. equipment according to claim 1 is characterized in that: the described equipment (41) that is used to produce adjustable magnetic fields is positioned at the radial outside of power transmitting deice (20).
26. equipment according to claim 1 is characterized in that: described power transmitting deice (20) has the radial fan (22) that is used for dissipated heat.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT000466A/2002 | 2002-03-06 | ||
| IT2002MI000466A ITMI20020466A1 (en) | 2002-03-06 | 2002-03-06 | FAN MOTOR VEHICLE TRANSMISSION DEVICE WITH MAGNETIC POWDER COUPLING |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1447014A true CN1447014A (en) | 2003-10-08 |
Family
ID=11449452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN03106848.0A Pending CN1447014A (en) | 2002-03-06 | 2003-03-05 | Equipment with magnetic power engaging connector for transferring power to vehicle fan |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN1447014A (en) |
| DE (1) | DE10308624A1 (en) |
| IT (1) | ITMI20020466A1 (en) |
| TW (1) | TW200305518A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460701C (en) * | 2007-04-02 | 2009-02-11 | 中国矿业大学 | Magnetic rheological hydraulic flexible starter |
| CN101313146B (en) * | 2006-01-10 | 2010-08-25 | 巴贾吉汽车公司 | Internal combustion engine with improved forced air-cooling |
| CN102084150A (en) * | 2008-07-09 | 2011-06-01 | 丰田自动车株式会社 | Twin-clutch device |
| CN102562856A (en) * | 2010-12-27 | 2012-07-11 | 余俊贤 | Magnetic-powder-type turbine clutch |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2864369B1 (en) * | 2003-12-19 | 2006-08-04 | Telma | ELECTROMAGNETIC RETARDER COMPRISING MEANS FOR CREATING AN AIR CURRENT |
-
2002
- 2002-03-06 IT IT2002MI000466A patent/ITMI20020466A1/en unknown
-
2003
- 2003-02-27 TW TW092104175A patent/TW200305518A/en unknown
- 2003-02-27 DE DE10308624A patent/DE10308624A1/en not_active Withdrawn
- 2003-03-05 CN CN03106848.0A patent/CN1447014A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101313146B (en) * | 2006-01-10 | 2010-08-25 | 巴贾吉汽车公司 | Internal combustion engine with improved forced air-cooling |
| CN100460701C (en) * | 2007-04-02 | 2009-02-11 | 中国矿业大学 | Magnetic rheological hydraulic flexible starter |
| CN102084150A (en) * | 2008-07-09 | 2011-06-01 | 丰田自动车株式会社 | Twin-clutch device |
| CN102084150B (en) * | 2008-07-09 | 2013-07-10 | 丰田自动车株式会社 | Twin-clutch device |
| CN102562856A (en) * | 2010-12-27 | 2012-07-11 | 余俊贤 | Magnetic-powder-type turbine clutch |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10308624A1 (en) | 2003-09-18 |
| ITMI20020466A1 (en) | 2003-09-08 |
| ITMI20020466A0 (en) | 2002-03-06 |
| TW200305518A (en) | 2003-11-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |