CN1815022B - Methods and systems for modifying the operation of a compressor via a portable memory device - Google Patents
Methods and systems for modifying the operation of a compressor via a portable memory device Download PDFInfo
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- CN1815022B CN1815022B CN 200510125375 CN200510125375A CN1815022B CN 1815022 B CN1815022 B CN 1815022B CN 200510125375 CN200510125375 CN 200510125375 CN 200510125375 A CN200510125375 A CN 200510125375A CN 1815022 B CN1815022 B CN 1815022B
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Abstract
A method and system for modifying the operation a device. The method can include obtaining a first reconfiguration kit. The first reconfiguration kit can include a portable memory device. The method can also include connecting the portable memory device to the device and transmitting information between the portable memory device and the device. The method can further include disconnecting the portable memory device from the device and returning the portable memory device to an entity associated with the provider of the portable memory device.
Description
Related application
The application requires right of priority that submit to, that be entitled as the U.S. Provisional Patent Application 60/621985 of " METHODS ANDSYSTEMS FOR MODIFYING THE OPERATION OF ACOMPRESSOR VIA A PORTABABLE MEMORY DEVICE " on October 25th, 2004.
Technical field
The present invention relates to dispose and change the operating characteristic of compressor.More particularly, embodiments of the invention relate to the operating characteristic of using portable memory device change compressor.
Background technology
In traditional compressor, use engine/compressor pulley or gear ratio that running parameter (being speed, pressure, power etc.) is set.Can be with engine/compressor pulley or gear than being arranged to specific parameter, so that compressor can be to work up to the specified vol of maximum pressure in available power range.Parameter often is in the production of compressor or assembling process, to set, and parameter is in case set just very difficult usually the modification.In some cases, the sole mode of change compressor characteristics is exactly a mechanical component of changing it.
Summary of the invention
Compressor with variable usually is used to overcome above-mentioned restriction.In some compressor with variable, with the mechanical gear assembly or the transport tape/pulley assembly of " electric gear " replace bulky that comprises speed change driver (VSD) and motor.Through the running parameter of VSD and motor dynamically is set, can compressor with variable be programmed for specific pressure and speed load (duty).In the traditional compressor by VSD control, compressor comprises the controller or the interface that let the user that the operation of compressor is programmed and customized.Yet controller and display maybe be very expensive, and the user possibly need special training could adjust the operating characteristic of compressor.The user of manual assigned operation characteristic also can be configured and programmes compressor, outside the operating characteristic of regulation, to work.
Embodiments of the invention provide a kind of system that is used to dispose the running parameter of compressor.This system comprises a compressor, and this compressor comprises speed change driver, portable memory device interface and has memory module and the portable memory device of external output port.Stored the operating characteristic of this compressor in the memory module of this portable memory device.External output port can be connected with the portable memory device interface of compressor.Can the memory module of operating characteristic from portable memory device be downloaded to the compressor.Then, compressor is worked according to the operating characteristic of downloading.After the down operation characteristic, can portable memory device be removed or breaks off connection from compressor.Also can portable memory device be returned to and distribute or service centre, there, can carry out reprogramming to it as required.
Additional embodiment provides a kind of method that is used to dispose compressor.This method can comprise: portable memory device is connected to compressor, and wherein, this portable memory device comprises the operating characteristic of this compressor.This method can also comprise: operating characteristic downloaded to the compressor from portable memory device, and based on the operating characteristic of downloading, the running parameter of change compressor.This method can also comprise: portable memory device is labeled as used, and it is removed from compressor.This method can also comprise: portable memory device is returned to distributed or service centre, there, can carry out reprogramming to it.
Another embodiment provides a kind of method that is used to dispose variable operation equipment.This method can comprise: portable memory device is connected to variable operation equipment, and wherein, this portable memory device comprises this variable operation operation of equipment characteristic.This method can also comprise: operating characteristic downloaded to the variable operation equipment from portable memory device, and, according to the operating characteristic of downloading, change variable operation apparatus operating parameters.This method can also comprise: portable memory device is labeled as used, and it is removed from variable operation equipment.This method can also comprise: portable memory device is returned to distributed or service centre, there, can carry out reprogramming to it.
Another embodiment provides a kind of operated system that is used to change compressor.This system comprises: compressor controller is configured to according to the running parameter operate compressor; And portable memory device, it comprises a counter that is used to follow the tracks of the behaviour in service of this portable memory device.This system can also comprise the first portable memory device interface, is configured between portable memory device and compressor transmission information and counter is set.This portable memory device is configured to be connected with the first portable memory device interface, and this compressor controller is configured to: based on this information, and the change running parameter; And, operate this compressor according to the running parameter after the change.
Additional embodiment provides a kind of method that is used to change first operation of equipment.This method can comprise: portable memory device is connected to first equipment.This portable memory device can comprise a Counter Value that is used to follow the tracks of the behaviour in service of this portable memory device.This method can also comprise: transmission information between the portable memory device and first equipment; Based on this information, change first apparatus operating parameters; And, the Counter Value of this portable memory device is set.This method can also comprise: disconnection is connected with first equipment with portable memory device; And, use the running parameter after changing, operate first equipment.
Other embodiment also provide a kind of method that is used to change operation of equipment.This method can comprise that obtaining first reconfigures the tool box.First reconfigures the tool box can comprise a portable memory device.This method also can comprise: this portable memory device is connected with this equipment; Transmission information between this portable memory device and this equipment; And, this portable memory device is connected with this equipment disconnection.This method can also comprise: portable memory device is returned to an entity that is associated with the supplier of this portable memory device.
In addition, embodiment also provides a kind of portable memory device.This portable memory device can comprise: a memory module, be configured to counter, and this Counter Value is used to follow the tracks of the behaviour in service of this portable memory device; An outside out connector can link to each other with the external reference connector of an equipment.When this outside out connector was connected to the external reference connector of said equipment, this outside out connector can be configured to transmission information between said equipment and memory module.
To those skilled in the art, through reading detailed instructions, claims and accompanying drawing, it is obvious that other features and advantages of the present invention will become.
Description of drawings
In the accompanying drawings:
Fig. 1 shows an exemplary variable operation equipment;
Fig. 2 shows an exemplary portable memory device;
Fig. 3 shows the embodiment of portable memory device of embodiment and Fig. 2 of the variable operation equipment of Fig. 1;
Fig. 4 shows an exemplary operation change tool box that comprises portable memory device shown in Figure 2;
The process flow diagram of Fig. 5 shows the example process of using portable memory device change shown in Figure 2 variable operation operation of equipment shown in Figure 1.
Embodiment
Should be understood that, application of the present invention be not limited to illustrate in the following instructions or following accompanying drawing shown in parts setting and structure detail.Also can come embodiment of the present invention with other embodiment realizations or through other modes.In addition, should be understood that word used herein and term are for the ease of explanation, and should not be regarded as having restricted meaning.Here use " comprising ", " having " and distortion thereof to mean and comprise project and equivalent and the addition item that list the back.Only if special qualification the, widely used here term " connections ", " coupling ", " assembling " and being out of shape comprise and direct with indirect being connected, coupling and assembling.In addition, term " connection ", " coupling " and distortion thereof are not limited to physics or mechanical connection or coupling.
Fig. 1 shows an exemplary variable operation equipment, and its form is a compressor 20.Should be understood that equipment 10 can be to be configured to provide a series of optional running parameter (for example speed, power, pressure etc.) or with the equipment of these parameter work, and can be replaced by compressor 20.Compressor 20 can comprise a compressor controller, like speed change driver (VSD) 30.Compressor 20 can also comprise storer 32, motor 35 and portable memory device interface 40.In certain embodiments, VSD 30 driving motors 35 so that the horsepower (" HP ") of about 7.5HP to 15HP to be provided, and can produce the pressure of about 115PST (pound/square inch) to 150PSI.
Storer 32 is configured to store the running parameter of VSD 30.Storer 32 can be stored and be used to control HP or the PSI designator how VSD 30 works.Storer 32 can also comprise the possible running parameter configuration of VSD 30, and VSD 30 can select a configuration from these configurations, and works according to the special parameter of indication in this configuration.Although the storer shown in should be noted in the discussion above that 32 is in the inside of VSD 30, it also can be positioned at the outside of VSD 30.
In some embodiments, portable memory device interface 40 comprises an external reference connector 42.In some embodiments, external reference connector 42 comprises a RJ45 containment type port.When external unit was connected to external reference interface 42, portable memory device interface 40 can be configured to transmission information.This information can comprise operating characteristic (being velocity characteristic, power characteristic, pressure characteristic etc.).After from the external unit that is connected to external reference interface 42, obtaining operating characteristic, can this operating characteristic be transferred to VSD 30 through connecting 45.VSD 30 can store this operating characteristic in the storer 32 into.VSD30 also can be based on this operating characteristic, the running parameter of storage in the change storer 32.
Should be understood that compressor 20 can comprise the additional assembly or the part of said modules.Also can the function that said modules provided be merged and be dispersed in the various configurations.
Fig. 2 shows an exemplary portable memory device 50 that can be connected to compressor 20.In some embodiments, portable memory device 50 comprises memory module 55, outside out connector 57, button or selection mechanism 59 and indicator 61.Memory module 55 can comprise non-volatility memorizer, like the ROM of one or more forms, one or more disc driver, RAM, other storeies or its combination.Memory module 55 can the storage operation characteristic.In some embodiments, compressor 20 can utilize the operating characteristic of storage in the memory module 55, and the running parameter of VSD 30 is set.Operating characteristic can the specified compression machine pressure and/or the speed parameter of 20 work.Operating characteristic also can be specified the model indication of power consumption and compressor 20 directly or indirectly.
The outside out connector 57 of portable memory device 50 can be connected to the external reference connector 42 of compressor 20.In some embodiments, the outside out connector 57 of portable memory device 50 can comprise a RJ45 plug-in connector, and this plug-in connector can be connected to the RJ45 containment type connector of the external reference connector 42 of compressor 20.Should be understood that outside out connector 57 can comprise other matching connector with external reference connector 42, and can connect through the mode of wired connection or wireless connections.When the outside out connector 42 of portable memory device 50 was connected with the external reference connector 42 of compressor 20, portable memory device interface 40 can be transferred to compressor 20 from the memory module 55 of portable memory device 50 with operating characteristic.Fig. 3 shows an embodiment of the portable memory device 50 that can be connected with exemplary compressor 20.
The operator can use the selection mechanism 59 of portable memory device 50 to start and/or the transmission of shut-down operation characteristic from the memory module 55 of portable memory device 50 to compressor 20.In some embodiments, selection mechanism 59 also can be used for the operating characteristic of storage in the memory module 55 is provided with and/or selects to be transferred to the operating characteristic of compressor 20.
Should be understood that portable memory device 50 can comprise the additional assembly or the part of said modules.Also can the function that said modules provides be merged and be distributed in the various configurations.
In some embodiments, portable memory device 50 is included in one and upgrades or reconfigure in the tool box.Fig. 4 shows an exemplary tool box 70 that reconfigures, and it comprises that portable memory device 50, model specify paster (decal) 75, portable memory device registration card 80, return mechanism 85 and warning and/or indicating card 90.In some embodiments, return mechanism 85 and can comprise wrapper, box, bag or and the case that allows the user after use reconfigures tool box 70, to return portable memory device.
Fig. 5 shows and uses an exemplary process flow that reconfigures tool box 70 upgrading compressors 20.Treatment step shown in Figure 5 is exemplary on order and content, and the part of step shown in can using or additional and optional step are accomplished and used the processing that reconfigures tool box 70 upgrading compressors 20.
From beginning square frame 99s, when the user wanted to change the operating characteristic (promptly changing pressure setting, power setting etc.) of compressor 20, the user can buy and/or obtain to reconfigure tool box 70 (square frame 100).In some embodiments, after purchase reconfigured tool box 70, the Service Technicians can be dispatched to the place at compressor 20 places, to accomplish upgrading, shown in square frame 105.Should be understood that even without the attendant, the user also can control oneself and accomplish upgrading.
In some embodiments, the attendant launches the emergency shutdown of compressor 20, to prevent when upgrading compressor work on (square frame 110) when carrying out.The Service Technicians can be through pressing the button, change switch position etc., launch emergency shutdown.After the emergency shutdown, the Service Technicians is with in the external reference connector 42 (comprising a containment type RJ45 connector) of the portable memory device interface 40 of outside out connector 57 (comprising a plug-in type RJ45 connector) the insertion compressor 20 of portable memory device 50 (square frame 115).In square frame 120, the Service Technicians discharges the selection mechanism 45 on the portable memory device 50, with the transmission of start-up operation characteristic to compressor 20.
Operating characteristic is transferred to after the compressor 20, through change Counter Value (for example, Counter Value is set to 1), can portable memory device 50 be labeled as and use.In some embodiments, used, and just can not re-use 50 pairs of storage component parts and compressor 20 is upgraded or change through portable memory device 50 is labeled as.
The operating characteristic of sending from portable memory device 50 in some embodiments, is forwarded to the VSD 30 through connecting 45.Should be understood that, compressor 20, the portable memory device interface 40 of perhaps more specifically saying so before will being transmitted to VSD 30 from the operating characteristic that pocket memory device 50 sends, can be handled these operating characteristics.
Receive after the operating characteristic that VSD 30 can utilize operating characteristic to be provided with and/or to change its running parameter (square frame 125).In some embodiments, VSD 30 will store in the storer 32 based on the running parameter of operating characteristic.VSD 30 can overlaying memory 32 in previously stored work on hand parameter (if any).VSD 30 also can select specific running parameter configuration based on operating characteristic from storer 32.Then, compressor 20, the VSD30 that perhaps more specifically says so is according to the operating characteristic work of being changed.
After the change or the compressor 20 of upgrading, the technician removes (square frame 150) with portable memory device 50 from the portable memory device interface 40 of compressor 20.In square frame 155, the Service Technicians specifies paster 75 to be installed on the existing paster of packing new model.In some embodiments, the Service Technicians specifies paster to be installed on the existing paster new model, can recognize the operating characteristic of compressor 20 to guarantee the user.Warning/indicating card 90 also can comprise the security assertion about the running parameter after the change of compressor 20, and this statement is to be provided with through the operating characteristic of sending from portable memory device 50.In some embodiments, if the user does not recognize the current operating characteristic of compressor 20, this user is operate compressor 20 insecurely just.
Then, the Service Technicians removes the emergency shutdown of compressor 20, so that compressor 20 can be reworked (square frame 160).As stated, emergency shutdown is removed in the position that the Service Technicians can be through pressing the button, changed switch etc.
The Service Technicians can fill in appropriate information on portable memory device registration card 80; And can return in the bag 85 at self-routing portable memory device 50 and registration card 80 are sent an entity that is associated to portable memory device 50 providers; For example, distributing center or service centre (square frame 165).Can the shape and the size of portable memory device 50 be configured, so that in returning bag 85, it is sent easily.In some embodiments, portable memory device 50 can high 1.5 inches, wide 1.0 inches, thick 0.2 inch.But, should be understood that the size of portable memory device 50 also can be different with shape, this depends on the compressor 20 that portable memory device 50 is connected.
The Service Technicians sends after portable memory device 50 and the portable memory device registration card 80, and change procedure finishes (square frame 130).Any entity that is associated with portable memory device 50 providers can utilize the portable memory device registration card 80 of return to follow the trail of sales force and the user preference to the compressor operation characteristic.The entity that is associated with portable memory device 50 providers also can be re-loaded to operating characteristic on the portable memory device 50 of return.Can use " black box " of this entity to change the operating characteristic of storing in the portable memory device 50.Also can use " black box " to change the security feature of portable memory device 50, for example identification parameter and/or Counter Value." black box " can comprise a not operation driver of having stored operating characteristic.Can portable memory device 50 be inserted in " black box ", " black box " can be in portable memory device 50 store operational parameters and/or security feature.In some embodiments, " black box " can cover the existing operating characteristic and/or the security feature of storage in the portable memory device 50.Then, can the portable memory device 50 after the change be ressembled and reconfigures in the tool box 70, and be used again.
Should be understood that the process of the operating characteristic of above-mentioned change compressor 20 can be performed unlimited, and carry out before can or compressor 20 being installed in sale, perhaps after installing and/or using compressor 20, carry out.
Also can use portable memory device 50 at the distributing center place, the operating characteristic of compressor 20 is set as requested.For example, the compressor 20 that is transported to distributing center from factory has the basic operating characteristic of a cover, with operate compressor 20 one of in the multiple operative configuration.Distributing center can stock's basic configuration compressor 20, after receiving order, they can use portable memory device 50 to be configured to the compressor 20 of basic configuration the accurate model of being ordered.Through setting operation characteristic as requested, distributing center need not to predict or be estimated as the quantity of the various models that satisfy the compressor 20 that client's needs must the stock.The portable memory device 50 that distributing center can the stock has the operating characteristic of possibility, and by order compressor 20 is configured.Distributing center also can comprise single portable memory device 50, and can comprise one aforesaid " black box ", so that the requested operation characteristic is stored in the portable memory device 50.In some embodiments, distributing center stock's portable memory device 50 does not comprise one or more above-mentioned security features, can be used more than once.But, can comprise a Counter Value by distributing center stock's portable memory device 50, be used for following the tracks of quantity, to be used to take inventory and/or sell purpose by the compressor 20 of portable memory device 50 configurations.
Also can portable memory device 50 and portable memory device interface 40 be combined, use as a diagnosis/trend prediction instrument.Compressor 20 can for example be operated duration, operating characteristic, sensor output, the situation of makeing mistakes and warning etc. to portable memory device 50 transmit operation information.Then, can portable memory device 50 be offered an entity that is associated with portable memory device 50 providers, use data, service recommendations etc. so that on-the-spot (in-field) to be provided.
Should be understood that, in the time of portable memory device 50 work, also can keep and being connected of compressor 20.As stated, in some embodiments, compressor 20 can be to portable memory device 50 transmit operation information, for analyses such as later diagnosis, sale, the marketings.
It is to be further understood that portable memory device 50 can be a movable equipment so that portable memory device 50 when not connecting compressor 20 also can work.But, in other embodiments, having only when portable memory device 50 connects, compressor 20 could be worked.For example, as required, compressor 20 can directly use in the portable memory device 50 operating characteristic of storage, rather than transmit operation characteristic and being stored in the storer 32.
Following claims provide various feature and advantage of the present invention.
Claims (45)
1. operated system that is used to change compressor, said system comprises:
Compressor controller is configured to: according to running parameter, operate said compressor;
Portable memory device comprises the counter of the behaviour in service that is used to follow the tracks of said portable memory device; And
The first portable memory device interface is configured to: transmission information between said portable memory device and said compressor controller, and said counter is set;
Said portable memory device is configured to: be connected to the said first portable memory device interface; And
Said compressor controller is configured to: based on said information, change said running parameter; And, according to the running parameter after the change, operate said compressor.
2. system according to claim 1, wherein, said portable memory device further is configured to: after the said information of transmission, be connected with said first pocket memory interface disconnection.
3. system according to claim 2, wherein, said compressor controller is configured to: said portable memory device and the said first pocket memory interface break off is connected after, according to the running parameter after changing, operate said compressor.
4. system according to claim 1, wherein, said compressor controller is configured to: when said portable memory device is connected to the said first pocket memory interface, according to the running parameter after the change, operate said compressor.
5. system according to claim 2, wherein, said portable memory device further is configured to: be connected to the second portable memory device interface.
6. system according to claim 1, wherein, said information comprises the operating characteristic of the running parameter that is configured to be provided with said compressor.
7. system according to claim 1, wherein, said information comprises the operation information of said compressor.
8. system according to claim 1, wherein, the said first portable memory device interface comprises the external reference connector.
9. system according to claim 1, wherein, said portable memory device comprises outside out connector.
10. system according to claim 1 also comprises the storer that is configured to store said running parameter.
11. system according to claim 1, wherein, said portable memory device comprises the selection mechanism that is configured to start said information transmission.
12. system according to claim 1, wherein, said portable memory device comprises the indicator of the operation that is configured to indicate said portable memory device.
13. a method that is used to change the variable operation operation of equipment, said method comprises:
Portable memory device is connected to said variable operation equipment, and said portable memory device comprises the Counter Value of the behaviour in service that is used to follow the tracks of said portable memory device;
Transmission information between said portable memory device and said variable operation equipment;
Based on said information, change said variable operation apparatus operating parameters;
The Counter Value of said portable memory device is set;
Said portable memory device is connected with said variable operation equipment disconnection; And
Use the running parameter after changing, operate said variable operation equipment.
14. method according to claim 13 also comprises: said portable memory device is returned to an entity that is associated with the provider of said portable memory device.
15. method according to claim 13 also comprises: change canned data in the said portable memory device.
16. method according to claim 13 also comprises: said portable memory device is connected to second equipment.
17. method according to claim 13, wherein, said information comprises the operating characteristic that is configured to be provided with said variable operation apparatus operating parameters.
18. method according to claim 13, wherein, said information comprises said variable operation operation of equipment information.
19. method according to claim 13 also comprises: utilize the selection mechanism of said portable memory device, start the information transmission between said portable memory device and the said variable operation equipment.
20. method according to claim 13 also comprises: the emergency shutdown of launching said variable operation equipment.
21. method according to claim 20 also comprises: the emergency shutdown of removing said variable operation equipment.
22. method according to claim 13 also comprises: the checking identification parameter.
23. method according to claim 22, wherein, said identification parameter is included in the said variable operation equipment.
24. method according to claim 22, wherein, said identification parameter is included in the said portable memory device.
25. a method that is used to change the variable operation operation of equipment, said method comprises:
Obtain first and reconfigure the tool box, said first reconfigures the tool box comprises portable memory device;
Said portable memory device is connected to said variable operation equipment;
Transmission information between said portable memory device and said variable operation equipment;
Said portable memory device is connected with said variable operation equipment disconnection; And
Said portable memory device is returned to an entity that is associated with the provider of said portable memory device.
26. method according to claim 25, wherein, the said tool box that reconfigures also comprises model appointment paster.
27. method according to claim 26 also comprises: said model is installed specifies paster.
28. method according to claim 25, wherein, said first reconfigures the tool box also comprises the portable memory device registration card.
29. method according to claim 28 also comprises: fill in said portable memory device registration card.
30. method according to claim 28 also comprises: said portable memory device registration card is returned to an entity that is associated with the provider of said portable memory device.
31. method according to claim 25, wherein, said first reconfigures the tool box also comprises return mechanism.
32. method according to claim 25 wherein, is returned said portable memory device and is comprised: use said return mechanism, return said portable memory device.
33. method according to claim 25 also comprises: use the selection mechanism that comprises in the said portable memory device, start the information transmission between said portable memory device and the said variable operation equipment.
34. method according to claim 25 also comprises: the emergency shutdown of launching said variable operation equipment.
35. method according to claim 34 also comprises: the emergency shutdown of removing said variable operation equipment.
36. method according to claim 25 also comprises: after the said information of transmission, the Counter Value of said portable memory device is set.
37. method according to claim 25 also comprises: before the said information of transmission, the checking identification parameter.
38. a portable memory device comprises:
Memory module is configured to: storage is used to follow the tracks of the Counter Value of the behaviour in service of said portable memory device;
Outside out connector can be connected with the external reference connector of an equipment, and be configured to: when said outside out connector is connected to the external reference connector of said equipment, and transmission information between said equipment and said memory module.
39. according to the described portable memory device of claim 38, wherein, said memory module further is configured to: the storage operation characteristic, to change said apparatus operating parameters.
40. according to the described portable memory device of claim 38, wherein, said memory module further is configured to: store said operation of equipment information.
41., also comprise the selection mechanism that is configured to allow the transmission of user's log-on message according to the described portable memory device of claim 38.
42. according to the described portable memory device of claim 41, wherein, said selection mechanism further is configured to: allow the user to select information to be transmitted.
43. according to the described portable memory device of claim 41, wherein, said selection mechanism further is configured to: allow the user with information stores in said storer.
44., also comprise the indicator of the operation that is configured to indicate said portable memory device according to the described portable memory device of claim 38.
45. according to the described portable memory device of claim 38, wherein, said memory module further is configured to: the storaging mark parameter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/051,046 | 2005-02-04 | ||
| US11/051,046 US7167761B2 (en) | 2004-10-25 | 2005-02-04 | Methods and systems for modifying the operation of a compressor via a portable memory device |
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| CN1815022B true CN1815022B (en) | 2012-01-11 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6739146B1 (en) * | 2003-03-12 | 2004-05-25 | Maytag Corporation | Adaptive defrost control for a refrigerator |
| US6789030B1 (en) * | 2000-06-23 | 2004-09-07 | Bently Nevada, Llc | Portable data collector and analyzer: apparatus and method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6789030B1 (en) * | 2000-06-23 | 2004-09-07 | Bently Nevada, Llc | Portable data collector and analyzer: apparatus and method |
| US6739146B1 (en) * | 2003-03-12 | 2004-05-25 | Maytag Corporation | Adaptive defrost control for a refrigerator |
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Effective date of registration: 20200326 Address after: North Carolina, USA Patentee after: Ingersoll Rand industries USA Address before: American New Jersey Patentee before: Ingersoll-Rand Co. |