US20050126749A1 - Heat pipe cooler for differential assembly - Google Patents
Heat pipe cooler for differential assembly Download PDFInfo
- Publication number
- US20050126749A1 US20050126749A1 US10/794,419 US79441904A US2005126749A1 US 20050126749 A1 US20050126749 A1 US 20050126749A1 US 79441904 A US79441904 A US 79441904A US 2005126749 A1 US2005126749 A1 US 2005126749A1
- Authority
- US
- United States
- Prior art keywords
- heat
- housing
- heat pipe
- assembly according
- lubricant
- 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.)
- Abandoned
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Classifications
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- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
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- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
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- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0482—Gearings with gears having orbital motion
- F16H57/0483—Axle or inter-axle differentials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/22—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point
- F01P2003/2278—Heat pipes
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- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0482—Gearings with gears having orbital motion
-
- 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
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/02—Arrangements for conditioning of lubricants in the lubricating system by cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
- F28D2021/0089—Oil coolers
Abstract
The present invention is directed to an apparatus to regulate and control the temperature of a differential axle assembly. A heat pipe is inserted though the axle housing with a portion submersed in axle lubricant. Cooling fins are preferably disposed on the heat pipe both in the submersed region of the heat pipe and a portion external the housing. The heat pipe is preferably secured to and substantially accommodated by a removable cover plate which is in turn secured to the housing. The heat pipe includes an evaporative working fluid to promote heat transfer between the lubricant and external environment.
Description
- The present application is a Continuation-in-part of U.S. application Ser. No. 10/143,752 filed on May 14, 2002 and is hereby incorporated herein by reference.
- 1. Field of the Invention
- The present invention relates to a heat pipe cooler for a differential assembly and particularly to an effective evaporative heat pipe assembly for transferring heat from the differential lubricant.
- 2. Description of Related Art
- Typically axles are lubricated by a reservoir of oil in the sump which is circulated by the moving components. This is known as splash lubrication. The operating temperature of a splash lubricated axle assembly or other torque transmission device is generally dependent on the torque being transmitted, the ambient temperature, the speed of rotation and airflow over the device.
- The operating temperature can be just above the ambient temperature to more than 200 degrees F. above ambient. Operating temperatures significantly above 250 degrees F. can begin to cause problems with the durability of the components in the axle as well as the lubricant itself. These temperatures are generally encountered at higher speeds and/or torques such as high speed highway driving or trailer towing. Therefore it is desirable to avoid these higher temperatures as much as possible. It is the intention of the present invention to minimize these high operating temperatures.
- It is known to provide cooling conduits within an axle assembly in order to avoid high operating temperatures. These conduits are positioned about a majority of the differential assembly and contain a hydraulic fluid from another device which is capable of cooling the lubricant in the axle.
- It is also known to have a differential assembly with a heat pipe having heat-absorbing portions extending through an oil sump as well as externally disposed heat-transmitting devices.
- Additionally, it is know to have a heat pipe including a closed tube having a heat exchange medium comprised of a plurality of fins.
- Thus, the aim underlying the present invention lies in providing an effective fluid lubricant cooling area that is readily utilizable, without significantly increasing the costs of production, the required space, and weight.
- The present invention is directed to a heat pipe cooler for an axle having a housing and removable cover. The heat pipe is secured to the cover and includes a heat-receiving zone, a heat-emitting zone and a working fluid, wherein the working fluid is evaporated in said heat-receiving zone and condensed in said heat-emitting zone to promote heat transfer between said lubricant and an external environment. The heat-receiving zone is at least partially immersed in the lubricant and contains heat-dissipating fins to promote heat transfer.
- A better understanding of the present invention will be had when reference is made to the accompanying drawings, wherein identical parts are identified by identical reference numbers and wherein:
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FIG. 1 is rear view of a differential cover plate with integral heat pipe assembly according to the present invention. -
FIG. 2 is a sectional view taken along lines 2-2 ofFIG. 1 . -
FIG. 3 is rear view of a differential cover plate with integral heat pipe assembly according to an alternate embodiment of the present invention. -
FIG. 4 is a sectional view taken along lines 4-4 ofFIG. 3 . -
FIG. 5 is a sectional view of a heat pipe secured to a differential cover according to an alternate embodiment of the present invention. -
FIG. 6 is a sectional view of a heat pipe secured to a differential cover according to an alternate embodiment of the present invention. -
FIG. 7 is a perspective view of a heat pipe secured to a differential cover according to an alternate embodiment of the present invention. -
FIG. 8 is a front exposed view of the embodiment ofFIG. 7 . -
FIG. 9 is an enlarged partial exposed view of the embodiment ofFIG. 8 . -
FIG. 10 is a sectional view of a heat pipe secured to a differential cover according to an alternate embodiment of the present invention. -
FIG. 11 is a perspective of an installed differential assembly employing the heat pipe of the present invention. -
FIG. 12 is a front view of a heat pipe secured to a differential housing according to an embodiment of the present invention. -
FIG. 13 is a side view of the embodiment depicted inFIG. 12 . - The present invention is directed to a heat pipe assembly for cooling lubricating fluid in a differential axle assembly. Preferably an evaporative heat pipe assembly is employed to increase the amount of heat transfer from the lubricant to the external environment. The assembly includes a hermetically sealed heat pipe containing a working fluid which is secured to a removable cover. The working fluid is selected to be vaporizable and condensable within the working temperatures of the differential assembly. The purpose of the heat pipe is to decrease the temperature of the lubricating fluid in the axle assembly. If the temperature of the lubricant gets to high, the lubricant will break down decreasing viscosity and its ability to effectively lubricate the gear assembly. The present invention effectively maintains the fluid lubricant at acceptable operating temperatures.
- The heat pipe contains a working fluid such as water, or a sodium based fluid or other acceptable working fluids. In liquid form, the working fluid collects at the bottom of the heat pipe due to the force of gravity. The bottom of the heat pipe is submersed in the pool of axle lubricant and causes the working fluid to vaporize (latent heat of vaporization) thus reducing the temperature of the lubricating oil. The vapor then travels up to a condensing portion where the vapor condenses giving up heat to an external environment. The condensed liquid then returns to the evaporative portion where the cycle continues. The arrangement increases the amount of heat that can be transferred from the axle lubricant. The structure of the preferred embodiments of the present invention will no be explained.
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FIGS. 1-2 depictdifferential cover plate 1 with integralheat pipe assembly 3. A hollow loop-shaped pipe 4 forming a continuous closed loop containing the heat transfer fluid 5 is integrally formed with a bolsteredportion 7 of thecover 1. The heat pipe is simply placed within a molding during casting of thecover plate 1. The integral casting facilitates good contact between theheat pipe 4 and bolsteredportion 7 to promote heat transfer there between as well as firmly position the heat pipe. The thick bolsteredportion 7 is formed withheat dissipating fins 9 on an external surface to enhance heat transfer. As can be seen a first elongated portion 11 of the heat pipe is disposed within the confines of thecover 1 and consequently within the axle housing. As can be seen inFIG. 1 , the heat pipe is below the level of the lubricant 13, which lies just belowaccess bore 14, and thus the first elongated portion of the heat pipe remains submersed in the axle lubricant during operation of the axle assembly. A secondelongated portion 12 remains substantially embedded within the bolsteredportion 9. The working fluid vaporizes in the first elongated portion 11 as it extracts heat from the hot lubricant. The vapor migrates to the second elongated portion where it condenses and gives off heat through the bolsteredportion 7 to the external environment. As can be readily seen the integral heat pipe and cover assembly provide a simple solution to increasing heat dissipation-through the axle assembly without requiring modification to the axle assembly or remaining housing. Such an arrangement allows for easy retrofit applications to existing differential assemblies. The arrangement also allows for the heat pipe to be easily assembled with the cover away from the vehicle to which the axle is installed. -
FIGS. 3-4 represent an alternate embodiment of the present invention. As in the previous embodiment,heat pipe assembly 23 is integrally secured to the cover plate 21. As in the previous embodiment the heat pipe is preferably cast with the cover plate forming an integral connection between the heat pipe and cover plate. According to this embodiment (FIGS. 3-4 ), the heat pipe extends through a modified bolsteredportion 27 of the cover plate 21, such that the secondelongated portion 31 is disposed external to the cover plate and axle housing. A plurality ofheat dissipating fins 28 is secured to the second elongated portion of the heat pipe to promote heat transfer to the external environment. The remaining portions of the embodiment ofFIGS. 3-4 remains nearly identical to that of the previously described embodiments ofFIGS. 1-2 . - The
heat pipe assembly heat pipe cover 1, may be made of aluminum, copper or stainless steel or other suitable materials. -
FIGS. 5-6 depict sectional views of additional embodiments of the present invention. Referring toFIG. 5 , a rear cover 101 is secured to a differential housing containing differential gearing to allow differential rotation between a pair (one shown) ofoutput shafts 205. A pinion gear 206 drives a ring gear 207 which in turn rotates a differential case containing differential gears (schematically represented by reference numeral 208) as is commonly known in the art. The cover 101 is simply bolted to a rear potion of the housing as is conventional in the art. The cover plate 201 preferably contains an integrally formedreservoir 202 in fluid communication with pool oflubricant 213 in the housing 201. Theheat pipe assembly 203 contains a first evaporative end 211 disposed within the pool oflubricant 213 and includes a plurality of heat dissipating fins 211 a also submersed in the lubricant. The heat pipe extends through thecover plate 1,reservoir 202, to the external environment to condensingportion 212 which also includes a plurality ofheat dissipating fins 212 a. Theheat pipe assembly 203 also preferably includes awick member 216 disposed within said heat pipe to promote transfer of working fluid from said evaporative heat receiving zone 211 to the condensingheat emitting zone 212 through capillary action. The wick member may be made for example of a metal mesh. -
FIG. 6 represents a slightly modified version of the embodiment depicted inFIG. 5 . In this embodiment, the evaporative portion of theheat pipe 213 extends substantially vertical within thereservoir 202 as to substantially horizontal as the heat pipe 211 of the embodiment shown inFIG. 5 . - In the embodiments of
FIGS. 6-9 two heat pipes 203 a, 203 b, are employed each containing separate evaporative cycles as in the previous embodiments. However, a first set of heat dissipating fins 412 a interconnects each of the heat pipes in the heat dissipating/condensing zone of the assembly. A second set of heat dissipating fins 411 a interconnects each of the heat pipes 203 a, 203 b in the heat receiving/evaporating zone of the assembly as shown inFIGS. 8-9 . - As previously indicated the specific materials may be selected based on the material specified for the cover plate and operating temperature of the lubricating fluid of the axle assembly. The heat pipe, or envelope may be composed of a durable material able to withstand environmental corrosion while being lightweight. Aluminum, copper and even some types of plastics may be employed. In the embodiments shown in
FIG. 1-4 the rear cover is preferably made of die cast aluminum and the heat pipe envelop made of aluminum with a sodium based working fluid contain therein. In the remaining embodiments metals such as aluminum, stainless steel or copper may be employed. Such metals provide sufficient strength to be able to contain high vapor pressures as higher working temperatures. The envelope may also be somewhat flexible, or bendable such as tygon tubing. The function of the wick is to transport the working fluid from the condenser to the evaporator via capillary action. The shape may be varied in form and can be made of various materials such as a metal screen. However, powdered metals, metal foams, sintered metals, felt type metals as well as some types of plastics or even glass my be employed so long as it is compatible with the working fluid and heat pipe envelope material. A wick may also be omitted forming a thermosyphon as in the embodiments ofFIGS. 1-4 . It is finally noted that certain combinations of working fluid and envelopes which may produce non-condensable gasses should be avoided. These gases may result from a chemical reaction between the envelope and working fluid. For example, an aluminum envelope and water will produce AIO and hydrogen gas. Excessive accumulation of non-condensable gasses will cause the heat pipe to fail. However, it is well within the knowledge of one of ordinarily skill in the art to avoid such unacceptable combinations as such are well documented in the art. - While the foregoing invention has been shown and described with reference to a preferred embodiment, it will be understood by those possessing skill in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. For example additional exemplary embodiments are shown in
FIGS. 1-13 which are also beleive to be within the spirit and scope of the present invention. For example, referring toFIG. 10 , the heat pipe may extend within the housing beyond the cover plate. The heat pipe may also extend substantially horizontally as it emerges from the cover plate as shown inFIG. 11 .
Claims (15)
1. An axle assembly for a motor vehicle, said axle assembly comprising:
an axle housing provided with a supply of liquid lubricant;
a cover removably secured to said housing; and
at least one a sealed heat transfer pipe mounted to said cover and, said heat transfer pipe including an heat-receiving zone, a heat-emitting zone and a heat transfer fluid that flows there between, wherein said fluid being evaporated in said heat-receiving zone and condensed in said heat-emitting zone to promote heat transfer between said lubricant and an external environment; wherein said heat-receiving zone is at least partially immersed in said lubricant when said cover is secured to said housing.
2. The axle assembly according to claim 1 , wherein said heat pipe is formed as a hollow loop-shaped pipe forming a continuous closed loop containing said heat transfer fluid.
3. The assembly according to claim 2 , wherein said loop shaped pipe include at least two elongated portions, a first elongated portion being disposed within said housing an substantially submerged in said lubricant, said loop shaped heat pipe being cast within a bolstered rear portion of said cover.
4. The assembly according to claim 3 , wherein a second elongated portion of said heat pipe is substantially embedded within a said bolstered portion of said cover, said bolstered portion having integrally formed fins directly exposed to said external environment.
5. The assembly according to claim 3 , wherein said heat pipe extends through said bolstered portion and includes a second elongated disposed external said housing and directly exposed to said external environment.
6. The assembly according to claim 5 , said heat pipe further includes a plurality of heat transfer fins affixed to said second elongated portion of said heat pipe.
7. The assembly according to claim 2 wherein said heat transfer fluid is sodium based solution.
8. An axle assembly for a motor vehicle, said axle assembly comprising:
an axle housing containing gears to facilitate differential rotation between a pair of driven output gears, said housing containing a pool of liquid lubricant;
a cover removably secured to said housing to provide access to said gears within said housing; and
at least one a substantially sealed heat transfer pipe fixed to said cover and removable therewith relative to said housing, said heat transfer pipe including a heat-receiving zone, a heat-emitting zone and a working fluid, wherein said working fluid is evaporated in said heat-receiving zone and condensed in said heat-emitting zone to promote heat transfer between said lubricant and an external environment; wherein said heat-receiving zone is at least partially immersed in said lubricant when said cover is secured to said housing.
9. The assembly according to claim 8 , wherein at least one a sealed heat transfer pipe includes a pair of heat pipes each containing separate heat-receiving zones and heat-emitting zones, said pair of heat pipes being interconnected by a set of common heat dissipating fins.
10. The assembly according to claim 9 wherein said set of common heat dissipating fins includes a first set disposed proximate said heat-receiving zone and being substantially immersed in said lubricant.
11. The assembly according to claim 19, said heat pipe extends external said housing to said external environment and said heat pipe further including a second set of common heat dissipating fins disposed proximate said heat-emitting zone in said external environment.
12. The assembly according to claim 8 , wherein said cover contains an integrally formed reservoir in fluid communication with said pool of lubricant in said housing, said heat receiving zone of said heat pipe being substantially disposed within said reservoir.
13. The assembly according to claim 8 , wherein said working fluid is a water based fluid.
14. The assembly according to claim 8 , wherein said heat pipe further includes a wick member disposed within said heat pipe to promote transfer of working fluid from said heat receiving zone to said heat emitting zone through capillary action.
15. The assembly according to claim 14 , wherein said wick member is formed of a metal screen.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/794,419 US20050126749A1 (en) | 2002-05-14 | 2004-03-08 | Heat pipe cooler for differential assembly |
AU2005201033A AU2005201033A1 (en) | 2004-03-08 | 2005-03-08 | Heat pipe cooler for differential assembly |
BR0503050-1A BRPI0503050A (en) | 2004-03-08 | 2005-03-08 | Motor Vehicle Spindle Assembly |
EP05101798A EP1574757A3 (en) | 2004-03-08 | 2005-03-08 | Heat pipe cooler for differential assembly |
CN200510071706.8A CN1676973A (en) | 2004-03-08 | 2005-03-08 | Heat pipe cooler for differential assembly |
US11/184,070 US20060054411A1 (en) | 2002-05-14 | 2005-07-19 | Heat pipe cooler for differential assembly |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/143,752 US6830096B1 (en) | 2002-05-14 | 2002-05-14 | Heat pipe for differential assembly |
US10/794,419 US20050126749A1 (en) | 2002-05-14 | 2004-03-08 | Heat pipe cooler for differential assembly |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/143,752 Continuation-In-Part US6830096B1 (en) | 2002-05-14 | 2002-05-14 | Heat pipe for differential assembly |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/184,070 Continuation-In-Part US20060054411A1 (en) | 2002-05-14 | 2005-07-19 | Heat pipe cooler for differential assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050126749A1 true US20050126749A1 (en) | 2005-06-16 |
Family
ID=34827580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/794,419 Abandoned US20050126749A1 (en) | 2002-05-14 | 2004-03-08 | Heat pipe cooler for differential assembly |
Country Status (5)
Country | Link |
---|---|
US (1) | US20050126749A1 (en) |
EP (1) | EP1574757A3 (en) |
CN (1) | CN1676973A (en) |
AU (1) | AU2005201033A1 (en) |
BR (1) | BRPI0503050A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060054411A1 (en) * | 2002-05-14 | 2006-03-16 | Fett Gregory A | Heat pipe cooler for differential assembly |
US20070221360A1 (en) * | 2006-03-27 | 2007-09-27 | Honda Motor Co., Ltd. | Temperature control apparatus for vehicle |
US20110226449A1 (en) * | 2008-10-01 | 2011-09-22 | Franz Mayr | Ventilation device for transmissions with lubricant comprising water |
CN103267437A (en) * | 2013-06-10 | 2013-08-28 | 天津市布加迪环保科技发展有限公司 | Double-finned heat pipe cooling device |
US9139797B2 (en) | 2006-03-03 | 2015-09-22 | Magna Steyr Fahrzeugtechnik Ag & Co. Kg | Operable transmission, working fluid for such a transmission, and method for commissioning the same |
USD741913S1 (en) * | 2013-06-05 | 2015-10-27 | Eaton Corporation | Integrated electronic limited slip rear wheel drive axle cover |
US9562604B2 (en) * | 2015-04-22 | 2017-02-07 | Ford Global Technologies, Llc | Axle heat absorber |
USD798906S1 (en) * | 2015-11-02 | 2017-10-03 | Omix-Ada, Inc. | Vehicle differential cover |
US10247296B2 (en) * | 2016-12-12 | 2019-04-02 | General Electric Company | Additively manufactured gearbox with integral heat exchanger |
US10443705B1 (en) * | 2018-10-23 | 2019-10-15 | Gale C. Banks, III | Differential cover |
EP3916335A1 (en) * | 2020-05-27 | 2021-12-01 | Flender GmbH | Oil cooling, transmission and simulation |
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Publication number | Priority date | Publication date | Assignee | Title |
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AT9168U1 (en) * | 2006-03-03 | 2007-05-15 | Magna Steyr Fahrzeugtechnik Ag | OPERATING GEARBOX, OPERATING FLUID FOR SUCH A PROCESS AND METHOD OF INITIAL STARTING THEREOF |
ES2402879T3 (en) * | 2010-07-22 | 2013-05-10 | Siemens Aktiengesellschaft | Transmission for industrial applications |
EP2410209B1 (en) * | 2010-07-22 | 2013-03-27 | Siemens Aktiengesellschaft | Transmission for industrial applications |
DE112014001647T5 (en) | 2013-03-28 | 2015-12-24 | Dana Canada Corporation | A heat exchanger and system for heating and cooling a fluid circulating in a housing |
CN103318149B (en) * | 2013-07-08 | 2016-10-05 | 张家港保税区利中国际贸易有限公司 | Braking automobile cooling system |
CN103912666A (en) * | 2014-04-09 | 2014-07-09 | 含山县全兴内燃机配件有限公司 | Self-radiating gearbox |
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Cited By (16)
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US20060054411A1 (en) * | 2002-05-14 | 2006-03-16 | Fett Gregory A | Heat pipe cooler for differential assembly |
US9139797B2 (en) | 2006-03-03 | 2015-09-22 | Magna Steyr Fahrzeugtechnik Ag & Co. Kg | Operable transmission, working fluid for such a transmission, and method for commissioning the same |
US20070221360A1 (en) * | 2006-03-27 | 2007-09-27 | Honda Motor Co., Ltd. | Temperature control apparatus for vehicle |
US8443871B2 (en) * | 2006-03-27 | 2013-05-21 | Honda Motor Co., Ltd. | Temperature control apparatus for heating a side door of a vehicle |
US10175001B2 (en) | 2008-10-01 | 2019-01-08 | Magna Steyr Fahrzeugtechnik Ag & Co. Kg | Ventilation device for transmissions with lubricant comprising water |
US20110226449A1 (en) * | 2008-10-01 | 2011-09-22 | Franz Mayr | Ventilation device for transmissions with lubricant comprising water |
USD741913S1 (en) * | 2013-06-05 | 2015-10-27 | Eaton Corporation | Integrated electronic limited slip rear wheel drive axle cover |
CN103267437A (en) * | 2013-06-10 | 2013-08-28 | 天津市布加迪环保科技发展有限公司 | Double-finned heat pipe cooling device |
US9562604B2 (en) * | 2015-04-22 | 2017-02-07 | Ford Global Technologies, Llc | Axle heat absorber |
USD798906S1 (en) * | 2015-11-02 | 2017-10-03 | Omix-Ada, Inc. | Vehicle differential cover |
US10247296B2 (en) * | 2016-12-12 | 2019-04-02 | General Electric Company | Additively manufactured gearbox with integral heat exchanger |
US20190170239A1 (en) * | 2016-12-12 | 2019-06-06 | General Electric Company | Additively manufactured gearbox with integral heat exchanger |
CN110268146A (en) * | 2016-12-12 | 2019-09-20 | 通用电气公司 | The gear-box of increasing material manufacturing with unit-type heat exchanger |
US10753455B2 (en) | 2016-12-12 | 2020-08-25 | General Electric Company | Additively manufactured gearbox with integral heat exchanger |
US10443705B1 (en) * | 2018-10-23 | 2019-10-15 | Gale C. Banks, III | Differential cover |
EP3916335A1 (en) * | 2020-05-27 | 2021-12-01 | Flender GmbH | Oil cooling, transmission and simulation |
Also Published As
Publication number | Publication date |
---|---|
BRPI0503050A (en) | 2005-10-11 |
CN1676973A (en) | 2005-10-05 |
EP1574757A3 (en) | 2006-06-14 |
EP1574757A2 (en) | 2005-09-14 |
AU2005201033A1 (en) | 2005-09-22 |
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Legal Events
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AS | Assignment |
Owner name: TORQUE-TRACTION TECHNOLOGIES, INC., OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MATTI, ASSIL ISMAIL;MCLEISH, PATRICIA A.;DOUGHERTY, SR., MICHAEL L.;AND OTHERS;REEL/FRAME:015385/0058;SIGNING DATES FROM 20040325 TO 20040419 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |