Combination monitoring device and patch for a pneumatic tire and method of installing the same

• US 6,388,567 B1
• Filed: 04/29/1999
• Issued: 05/14/2002
• Est. Priority Date: 04/29/1999
• Status: Expired due to Term

• Current Assignee: Bridgestone Americas Tire Operations LLC (Bridgestone Corporation)
• Original Assignee: Bridgestone Firestone North American Tire LLC (Bridgestone Corporation)
• Inventors: Trew, Robert J., Koch, Russell W., Rensel, John D., Bohm, Georg G. A., Turner, John L.
• Primary Examiner(s): POPE, DARYL C
• Application Number:
  US09/301,781
• Time in Patent Office: 1,111 Days
• Field of Search: 731/462, 731/464, 731/468, 152/152.1, 340/442, 340/445
• US Class Current: 340/442
• CPC Class Codes: B29D 2030/0072 Attaching fasteners to tyres, e.g. patches, in order to connect devices to tyres
• CPC Class Codes: B29D 2030/0077 Directly attaching monitoring devices to tyres before or after vulcanization, e.g. microchips
• CPC Class Codes: B60C 23/0493 for attachment on the tyre
• CPC Class Codes: H01Q 1/2241 used in or for vehicle tyres

Abstract

A monitoring device and patch combination used to monitor the conditions of a pneumatic tire having an innerliner includes a monitoring device and patch. The monitoring device includes a first connection element that is connected to the monitoring device. The patch includes an antenna that is connected to a second connection element. In one embodiment of the invention, the first connection element is in the form of a socket while the second connection element is in the form of a plug. The connection elements allow the monitoring device and patch to be separately fabricated and the direct physical connection between the antenna and the monitoring device to be formed when the combination is connected to the innerliner of the tire. In another embodiment, a plug extends from the bottom of an encapsulated monitoring device and is aligned with a socket on the patch. The connection between the plug and the socket occurs automatically when the encapsulated monitoring device is aligned with and connected to the patch.

Claims

1. A monitoring device and patch combination used to monitor the conditions of a pneumatic tire having an innerliner, the combination comprising:

a monitoring device;

a patch carrying said monitoring device, said patch adapted to mount the monitoring device on the innerliner of the pneumatic tire;

an antenna carried by said patch; and

a connector selectively physically electrically connecting said antenna to said monitoring device.

2. The combination of claim 1, wherein said antenna is embedded within said patch.

3. The combination of claim 1, wherein said connector includes at least one plug and at least one socket.

4. The combination of claim 3, wherein said monitoring device is encapsulated by an encapsulation material to form an encapsulated monitoring device;

said encapsulated monitoring device having a bottom surface.

5. The combination of claim 4, wherein said plug extends out from said encapsulated monitoring device;

said socket being carried by said patch and aligned with said plug whereby said plug docks with said socket when said monitoring device is aligned with and mounted on said patch.

6. The combination of claim 5, wherein said plug substantially rigidly extends out from said bottom surface of said encapsulated monitoring device.

7. The combination of claim 3, wherein said plug extends from said patch and said socket is connected to said monitoring device.

8. The combination of claim 7, wherein said plug flexibly extends from said patch.

9. The combination of claim 8, further comprising a flexible wire connecting said antenna to said plug.

10. The combination of claim 9, wherein said antenna is embedded within said patch.

11. The combination of claim 10, wherein said monitoring device is encapsulated by an encapsulation material to form an encapsulated monitoring device.

12. The combination of claim 1, wherein said patch includes a foot portion that extends away from said monitoring device, said antenna carried by said patch at said foot portion.

13. A method of installing a monitoring device on the innerliner of a tire comprising the steps of:

providing a monitoring device having a first connection element;

providing a patch separate from the monitoring device, the patch having an antenna connected to a second connection element;

attaching the monitoring device to the patch;

connecting the first and second connection elements to create a physical electrical connection between the antenna and the monitoring device; and

mounting the patch on the innerliner.

14. The method of claim 13, wherein the step of providing a monitoring device includes the step of encapsulating the monitoring device and at least a portion of the first connection element with an encapsulation material.

15. The method of claim 13, wherein the step of providing a patch includes the step of embedding the antenna and at least a part of the second connection element within the patch.

16. The method of claim 13, wherein the step of connecting the first and second connection elements occurs as the monitoring device is attached to the patch.

17. The method of claim 13, wherein the step of connecting the first and second connection elements occurs after the monitoring device is attached to the patch.

18. The method of claim 17, wherein the step of mounting the patch on the innerliner occurs before the step of attaching the monitoring device to the patch.

19. The method of claim 18, further comprising the step of stitching the patch to the innerliner of the tire prior to the step of attaching the monitoring device to the patch.

20. The method of claim 13, wherein the step of connecting the first and second connection elements occurs before the monitoring device is attached to the patch.

21. The method of claim 13, wherein the step of mounting the patch on the innerliner occurs before the step of attaching the monitoring device to the patch.

22. The method of claim 13, wherein the step of mounting the patch on the innerliner occurs after the step of attaching the monitoring device to the patch.

23. A monitoring device and patch combination used to monitor the conditions of a pneumatic tire having an innerliner, the combination comprising:

a monitoring device;

an attachment patch connected to said monitoring device;

an anchoring layer adapted to be connected to the innerliner of the tire;

an antenna carried by said anchoring layer; and

a connector connected to said monitoring device and contacting said antenna to provide a direct physical electrical connection between the antenna and the monitoring device.

24. The combination of claim 23, wherein said monitoring device is encapsulated by an encapsulation material to form an encapsulated monitoring device;

said connector extending through said encapsulation material.

25. The combination of claim 23, wherein said antenna is embedded within said anchoring layer.

26. The combination of claim 25, wherein the anchoring layer defines an alignment hole.

27. The combination of claim 26, wherein said connector is disposed within said alignment hole.

28. An anchoring patch for attaching a monitoring device to an innerliner of a tire, said anchoring patch comprising:

an anchoring layer adapted to be connected to the innerliner;

an antenna carried by said anchoring layer;

a cover carried on at least one side of said anchoring layer; and

a layer of cure material disposed between said anchoring layer and said cover.

29. The patch of claim 28, wherein the cover includes a plug, said plug extending into said anchoring layer adjacent said antenna.

30. The patch of claim 28, wherein said anchoring layer is fabricated from uncured rubber.

31. The patch of claim 28, wherein said cover is fabricated from a cured rubber.

32. The patch of claim 28, wherein said antenna is embedded within said anchoring layer.

33. A method of attaching a monitoring device to an innerliner of a tire, the method comprising the steps of:

providing an anchoring patch having an anchoring layer and a cover, said anchoring layer carrying an antenna;

attaching the anchoring patch to the innerliner of the tire;

removing the cover;

providing a monitoring device having a connector;

attaching the monitoring device to the anchoring layer; and

connecting the connector of the monitoring device with the antenna.

34. The method of claim 33, wherein the step of attaching the anchoring patch to the innerliner includes the step of curing the anchoring patch to the tire.

35. The method of claim 34, wherein the step of curing includes the step of chemically curing the anchoring patch to the tire.

36. The method of claim 34, wherein the step of curing includes the step of heat curing the anchoring patch to the tire.

37. The method of claim 33, wherein the step of attaching the anchoring patch to the innerliner includes the step of adhesively attaching the anchoring patch to the innerliner of the tire.

38. The method of claim 33, wherein the step of providing an anchoring patch includes the step of providing a plug connected to the cover that extends into the anchoring layer;

and further including the step of forming an alignment hole in the anchoring when the cover is removed.

39. The method of claim 38, further comprising the steps of aligning the connector with the alignment hole and inserting the connector into the alignment hole.

40. The method of claim 39, further comprising the step of providing an attachment patch attached to the monitoring device and adhering the attachment patch to the anchoring layer.

41. The method of claim 40, wherein the step of adhering the attachment patch to the anchoring layer occurs before the monitoring device is attached to the anchoring layer.

42. A monitoring device and patch combination used to monitor the conditions of a pneumatic tire having an innerliner, the combination comprising:

a monitoring device having at least one sensing element;

a patch;

an antenna mounted on the patch, the patch adapted to mount on the innerliner of the tire; and

the antenna being electrically connected to the monitoring device.

43. The combination of claim 42, wherein the antenna is embedded within the patch.

44. The combination of claim 42, further comprising an attachment patch, the monitoring device mounted on the attachment patch and the attachment patch being mounted on the patch having the antenna.

45. The combination of claim 42, wherein the connection between the antenna and the monitoring device is selective.

46. The combination of claim 45 further comprising first and second connection elements;

the first connection element being connected to the antenna and the second connection element being connected to the monitoring device;

the first and second connection elements being selectively connectable.

47. The combination of claim 42, wherein the antenna is spaced from the monitoring device.

48. The combination of claim 42, wherein the patch includes a foot portion;

at least a portion of the antenna being disposed at the foot portion of the patch.

49. The combination of claim 48, wherein a major portion of the antenna is disposed at the foot portion of the patch.

50. The combination of claim 49, further comprising a connector disposed between the antenna and the monitoring device;

the connector being adapted to provide a selective connection between the antenna and the monitoring device.

51. The combination of claim 42, further comprising an attachment patch;

the monitoring device being connected to the attachment patch; and

the attachment patch mounted to the patch.

52. The combination of claim 42, wherein at least a portion of the antenna is embedded within the patch.

53. The combination of claim 42, wherein the monitoring device is connected to the patch.

54. The combination of claim 42, wherein the monitoring device is embedded within the patch.

55. The combination of claim 54, wherein the monitoring device is spaced from the antenna.