Bearing with data storage device

• US 6,501,382 B1
• Filed: 06/11/2001
• Issued: 12/31/2002
• Est. Priority Date: 06/11/2001
• Status: Active Grant

• Current Assignee: The Timken Company
• Original Assignee: The Timken Company
• Inventors: Smith, Douglas H., Rehfus, Kevin E.
• Primary Examiner(s): POPE, DARYL C
• Application Number:
  US09/878,485
• Publication Number:
  US 20020186134A1
• Time in Patent Office: 568 Days
• Field of Search: 340/572.1, 340/572.7, 340/572.8, 340/539, 384/459, 235/462.46
• US Class Current: 340/572.8
• CPC Class Codes: F16C 19/36 with a single row of rollers
• CPC Class Codes: F16C 19/364 with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
• CPC Class Codes: F16C 41/008 Identification means, e.g. markings, RFID-tags; Data transfer means

Abstract

A product with an automatic identification and data capture (AIDC) device associated with a physical measurement, authentication code or operating condition of the product is disclosed. A bearing with an embedded transponder is illustratively described. The transponder contains data specific to the manufactured bearing, such as physical measurements or identification numbers.

Claims

1. In a bearing having an inner race, an outer race, a plurality of rolling members disposed between said inner race and said outer race, and a cage to maintain a desired spacing between said rolling members;

the improvement comprising a pocket formed in a surface of said bearing and a self-contained transponder assembly received in said pocket;

said transponder assembly containing data unique to the individual bearing containing said transponder assembly;

said self-contained transponder assembly comprising a housing, a memory chip on which said data is encoded and an antenna capable of detecting electromagnetic signals, said memory chip and antenna being contained in said transponder assembly housing;

said transponder assembly and said bearing pocket being sized such that an upper surface of said transponder housing does not extend above said bearing surface.

2. The bearing of claim 1 wherein said data is chosen from the group consisting essentially of at least one measured physical property unique to said bearing, product identification data, inspection and maintenance data, condition monitoring data, inventory information data, and combinations thereof.

3. The bearing of claim 1 wherein said transponder is an RF tag.

4. The bearing of claim 2 wherein said RF tag includes an EEPROM chip.

5. The bearing of claim 4 wherein said RF tag further includes a power supply.

6. The bearing of claim 5 wherein said surface of said bearing in which said pocket is formed is an outer surface of said bearing.

7. The improvement of claim 1 wherein said memory chip is a rewritable memory chip, and the information on said chip can be updated or altered by a consumer or manufacturer.

8. In combination, a bearing and a self-contained AIDC device, said bearing comprising an inner race, an outer race, a plurality of rolling members positioned between said inner and outer races, and a cage for maintaining a desired spacing between said rolling members;

said bearing further including a surface and a pocket formed in said surface;

said self-contained AIDC device including a memory chip and an antenna and being fully received in said pocket, said pocket being sized such that said AIDC device does not extend above said surface;

said AIDC device containing information associated with the manufacture of the bearing.

9. The bearing of claim 8 wherein said AIDC device is a transponder.

10. The bearing of claim 8 wherein said transponder is an RF tag.

11. The bearing of claim 8 wherein said information associated with said individual bearing is a physical property of said individual bearing.

12. The bearing of claim 11 wherein said information associated with said individual bearing comprises a measurement taken during manufacture of said bearing.

13. The bearing of claim 11 wherein information value associated with said individual bearing comprises a maintenance record.

14. The bearing of claim 13 wherein said maintenance record comprises the last identified lubrication of said bearing.

15. The bearing of claim 12 wherein said information associated with said bearing further comprises an identification number.

16. The bearing of claim 12 wherein said information associated with said individual bearing further comprises a measured operating value of said bearing.

17. The bearing of claim 16 wherein said measured operating value is chosen from the group consisting essentially of the bearing temperature, maximum temperature achieved, maximum vibration recorded, cumulative revolutions, and combinations thereof.

18. A method of communicating manufacturing information for a bearing to a consumer of the bearing:

manufacturing a bearing having a pocket in a surface of said bearing;

acquiring physical data associated with said bearing;

positioning a self-contained AIDC device in said bearing pocket, said bearing pocket being sized such that said AIDC device does not extend above said bearing surface, said self-contained AIDC device comprising a memory chip and an antenna for said AIDC device;

encoding said acquired physical data in said memory chip;

said data being;

readable by a consumer of said bearing for receiving and interpreting manufacturing data associated with said bearing by passing said bearing through an electromagnetic field.

19. The method of claim 18 wherein said encoded data is a serial number.

20. The method of claim 18 wherein said encoded data is interpreted by a computer.

21. The method of claim 20 wherein said computer is operated by a consumer of said product.

22. The method of claim 20 wherein said data comprises at least one physical measurement of said product.

23. The method of claim 20 wherein said data comprises a maintenance data.

24. The method of claim 20 wherein said data further comprises an authentication code.

25. The method of claim 20 wherein said data further comprises a monitored operating condition.