RUBBER-COVERED RFID MODULE, AND PNEUMATIC TIRE HAVING THE IT IS EMBEDDED

• US 20090015415A1
• Filed: 02/26/2007
• Published: 01/15/2009
• Est. Priority Date: 02/27/2006
• Status: Active Grant

• Current Assignee: Yokohama Rubber Company Limited
• Original Assignee: Yokohama Rubber Company Limited
• Inventors: Uehara, Tsuyoshi, Tsuji, Takue
• Granted Patent: US 8,072,336 B2
• Time in Patent Office: Days
• US Class Current: 340/572.800
• CPC Class Codes: B60C 1/00 Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• CPC Class Codes: B60C 23/0408 transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• 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 152/10495 Pneumatic tire or inner tube

Abstract

An RFID module comprising a transponder covered with a 0.2 to 2 mm thick rubber sheet containing 100 parts by weight of a diene-based rubber, less than 30 parts by weight of carbon black and 5 to 55 parts by weight of silica, having a relative permittivity of 7 or less and having a dynamic modulus of elasticity (E′) of 2 to 12 MPa, which can extend a communication distance with a required installation location and is superior in the durability at the time of being embedded in the tire.

Claims

1. An RFID module comprising a transponder covered with a 0.2 to 2 mm thick rubber sheet containing 100 parts by weight of a diene-based rubber, less than 30 parts by weight of carbon black and 5 to 55 parts by weight of silica, having a relative permittivity of 7 or less and having a dynamic modulus of elasticity (E′

) of 2 to 12 MPa.

2. An RFID module as claimed in claim 1, wherein said diene-based rubber is at least one rubber selected from the group consisting of natural rubber, polyisoprene rubber, polybutadiene rubber, butyl rubber, ethylene-propylene-diene copolymer rubber and styrene-butadiene copolymer rubber.

3. An RFID module as claimed in claim 1, wherein said rubber sheet is comprised of a rubber composition of 100 parts by weight of the diene-based rubber into which 0 to 10 parts by weight of carbon black and 15 to 45 parts by weight of silica are compounded.

4. A pneumatic tire in which an RFID module according to claim 1 is embedded inside the tire at a position above a rim-flange contact portion from a tire shoulder portion.

5. An RFID module as claimed in claim 2, wherein said rubber sheet is comprised of a rubber composition of 100 parts by weight of the diene-based rubber into which 0 to 10 parts by weight of carbon black and 15 to 45 parts by weight of silica are compounded.

6. A pneumatic tire in which an RFID module according to claim 5 is embedded inside the tire at a position above a rim-flange contact portion from a tire shoulder portion.

7. A pneumatic tire in which an RFID module according to claim 2 is embedded inside the tire at a position above a rim-flange contact portion from a tire shoulder portion.

8. A pneumatic tire in which an RFID module according to claim 3 is embedded inside the tire at a position above a rim-flange contact portion from a tire shoulder portion.