Method and apparatus for bonding an active tag to a patch and a tire

• US 5,971,046 A
• Filed: 09/17/1997
• Issued: 10/26/1999
• Est. Priority Date: 09/17/1997
• Status: Expired due to Term

• Current Assignee: Bridgestone Firestone North American Tire LLC (Bridgestone Corporation)
• Original Assignee: Bridgestone Firestone North American Tire LLC (Bridgestone Corporation)
• Inventors: Koch, Russell W., Wilson, Paul B., Walenga, Guy J.
• Primary Examiner(s): Lorin, Francis J.
• Application Number:
  US08/932,091
• Time in Patent Office: 769 Days
• Field of Search: 152/152.1, 152/539
• US Class Current: 152/152.1
• CPC Class Codes: B29C 2037/80 Identifying, e.g. coding, dating, marking, numbering
• 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: B29D 2030/728 Decorating or marking the sidewalls after tyre vulcanization
• CPC Class Codes: B60C 19/00 Tyre parts or constructions not otherwise provided for
• CPC Class Codes: B60C 23/04 mounted on the wheel or tyre
• CPC Class Codes: B60C 23/0493 for attachment on the tyre
• CPC Class Codes: G06K 19/07764 the adhering arrangement making the record carrier attachable to a tire tire temperature or pressur control arrangements, see B60C23/00
• CPC Class Codes: Y10T 152/10819 Characterized by the structure of the bead portion of the tire

Abstract

A method and apparatus for bonding an active tag to a patch and assembling the patch to a tire is set forth. A patch assembly and a method for securing an electronic monitoring device having electronic and mechanical components for monitoring at least one engineering condition within a tire, comprising an rigid tag assembly encapsulating the electronic monitoring device, bonded to a vulcanized rubber patch which is secured to the inner cavity of a tire utilizing a layer of dual cure bonding rubber.

Claims

1. A tire patch for securing an electronic monitoring device for monitoring at least one engineering condition within a tire, comprising:

a vulcanized rubber patch of preselected configuration having a first side for interfacing with a face of an encapsulated rigid monitoring device and a second opposite side approximating the contour of an inner liner of a tire, the first side including a recessed cavity surrounded by a raised ridge of material of sufficient height capable of surrounding a portion of the outer periphery of the encapsulated rigid monitoring device; and

a layer of uncured dual cure bonding rubber having a first surface and a second surface, the first surface being permanently assembled to the second side of the vulcanized rubber patch.

2. The tire patch of claim 1, wherein the patch is comprised of rubber selected from the group consisting of EPDM, butyl rubber, natural rubber, neoprene, and mixtures thereof.

3. The tire patch of claim 1, wherein the patch is comprised of a mixture of chlorobutyl rubber and natural rubber.

4. The tire patch of claim 1, wherein the patch is comprised of a mixture of SBR and natural rubber.

5. A patch assembly for securing an active electronic monitoring device having electronic and mechanical components for monitoring at least one engineering condition within a tire, comprising:

a rigid tag assembly including a rigid potting material encapsulating an active electronic monitoring device, the rigid tag assembly having an upper surface, a lower surface and an outer periphery;

a vulcanized rubber patch of preselected configuration having a first side for interfacing with a face of an encapsulated tag assembly and a second opposite side approximating the contour of an inner liner of a tire, the first side including a recessed cavity surrounded by a raised ridge of material of sufficient height surrounding a portion of the outer periphery of the rigid tag assembly;

an adhesive layer securing at least the lower surface of the rigid tag assembly within the recessed cavity of the vulcanized rubber patch; and

a layer of uncured dual cure bonding rubber having a first surface and a second surface, the first surface being permanently assembled to the second side of the vulcanized rubber patch.

6. The patch assembly of claim 5 wherein the potting material has a Young'"'"'s Modulus of at least 30,000 psi and is capable of being molded around the electronic monitoring device without damaging any components of the electronic monitoring device.

7. The patch assembly of claim 6 wherein the potting material has a Young'"'"'s Modulus of about 100,000 psi.

8. The patch assembly of claim 6 wherein the potting material selected from the group consisting of epoxy and urethane.

9. A tire having an active electronic monitoring device for monitoring at least one engineering condition mounted within the tire, comprising:

a vulcanized tire having an inner liner;

a rigid tag assembly including a rigid potting material encapsulating an active electronic monitoring device, the rigid tag assembly having an upper surface, a lower surface and an outer periphery;

a vulcanized rubber patch of preselected configuration having edges, a first side for interfacing with a face of an encapsulated tag assembly and a second opposite side approximating the contour of an inner liner of a tire, the first side including a recessed cavity surrounded by a raised ridge of material of sufficient height surrounding a portion of the outer periphery of the rigid tag assembly;

an adhesive layer securing at least the lower surface of the rigid tag assembly within the recessed cavity of the vulcanized rubber patch; and

a layer of dual cure bonding rubber having a first surface and a second surface, the first surface being permanently cured to the second side of the vulcanized rubber patch and the second surface being permanently cured to the inner liner of the tire.

10. The tire of claim 9 wherein the dual cure bonding rubber includes rubbers capable of bonding the vulcanized rubber of the rubber patch to the vulcanized rubber of the inner liner of the tire.

11. The tire of claim 10 wherein the dual cure bonding rubber is natural rubber.

12. A tire patch for securing an electronic monitoring device for monitoring at least one engineering condition within a tire, comprising:

a rigid insert having a cylindrical wall, the interior of the cylindrical wall forming a recessed cavity for receiving a cylindrical encapsulated monitoring device;

a rubber patch of preselected configuration having a first side and a second opposite side, the first side including a cylindrical raised ridge of material surrounding the cylindrical wall of the rigid insert, the raised ridge being of sufficient height to secure the insert in a fixed position, and the second opposite side for interfacing with a face of an encapsulated rigid monitoring device and the second opposite side approximating the contour of an inner liner of a tire; and

a layer of dual cure bonding rubber having a first surface and a second surface, the first surface being permanently assembled to the second side of the rubber patch, while the second surface is uncured.

13. The tire patch of claim 12 wherein the insert consists of a rigid material selected from the group consisting of plastic, composite material and metal.

14. The tire patch of claim 13 wherein the insert consists of a rigid composite material selected from the group consisting of glass-filled polyimide and glass-filled epoxy.

15. The tire patch of claim 13 wherein the insert consists of a rigid composite material selected from the group consisting of epoxy and nylon.

16. A patch assembly for securing an active electronic monitoring device having electronic and mechanical components for monitoring at least one engineering condition within a tire, comprising:

a cylindrical rigid tag assembly including a rigid potting material encapsulating an active electronic monitoring device, the rigid tag assembly having an upper surface, a lower surface and an outer cylindrical periphery;

a rigid insert having a cylindrical wall, the interior of the cylindrical wall forming a recessed cavity for receiving the cylindrical rigid tag assembly;

a vulcanized rubber patch of preselected configuration having edges, a first side and a second opposite side, the first side including a cylindrical raised ridge of material surrounding the cylindrical wall of the rigid insert, the raised ridge being of sufficient height to secure the insert in a fixed position, and the second opposite side approximating the contour of an inner liner of a tire;

an adhesive layer securing at least the outer cylindrical periphery of the rigid tag assembly within the recessed cavity of the cylindrical rigid insert; and

a layer of dual cure bonding rubber having a first surface and a second surface, the first surface being permanently assembled to the second side of the vulcanized rubber patch, while the second surface is uncured.

17. The patch assembly of claim 16 wherein the height of the raised ridge of material is about the same height as the cylindrical insert.

18. The patch assembly of claim 16 wherein the height of the raised ridge of material is less that the height of the cylindrical insert.

19. The patch assembly of claim 16 wherein the insert consists of a rigid material selected from the group consisting of plastic, composite material and metal.

20. A tire having an active electronic monitoring device for monitoring at least one engineering condition mounted within the tire, comprising:

a vulcanized tire having an inner liner;

a cylindrical rigid tag assembly including a rigid potting material encapsulating an active electronic monitoring device, the cylindrical rigid tag assembly having a cylindrical outer periphery wall, an upper surface and a lower surface;

a rigid insert having a cylindrical wall, the interior of the cylindrical wall forming a recessed cavity for receiving the cylindrical rigid tag assembly;

a vulcanized rubber patch of preselected configuration having edges, a first side and a second opposite side, the first side including a cylindrical raised ridge of material surrounding the cylindrical wall of the rigid insert, the raised ridge being of sufficient height to secure the insert in a fixed position, and the second opposite side approximating the contour of an inner liner of a tire;

an adhesive layer securing at least the cylindrical outer periphery wall of the rigid tag assembly to the cylindrical wall of the rigid insert; and

a layer of dual cure bonding rubber having a first surface and a second surface, the first surface being permanently bonded to the second side of the vulcanized rubber patch and the second surface being permanently cured to the inner liner of the tire.

21. A tire patch for securing an electronic monitoring device for monitoring at least one engineering condition within a tire, comprising:

a rubber patch having a first side for interfacing with a face of the electronic monitoring device and a second opposite side for interfacing with an inner liner of a tire, the first side including a recessed cavity surrounded by a raised ridge having a height adapted to surround at least a portion of the outer periphery of the monitoring device; and

a layer of uncured rubber having a first surface and a second surface, the first surface being connected to the second side of the rubber patch.

22. The tire patch of claim 21, wherein the uncured rubber is a dual cure bonding rubber.

23. The tire patch of claim 22, wherein the patch is comprised of a rubber selected from the group consisting of EPDM, butyl rubber, natural rubber, neoprene, and mixtures thereof.

24. The tire patch of claim 23, wherein the second side of the patch is adapted to approximate the contour of the inner liner of the tire.