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Pneumatic rubber tire having annular rubber strip containing electrically conductive bonded to its inner surface

  • US 7,318,464 B2
  • Filed: 01/17/2003
  • Issued: 01/15/2008
  • Est. Priority Date: 01/17/2003
  • Status: Expired due to Fees
First Claim
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1. A cured pneumatic tire having an open toroidal shape with an open toroidal cavity and with an inner cured rubber surface substantially co-existent with said open toroidal cavity;

  • wherein a portion of said tire inner cured rubber surface contains a cured annular rubber strip adhesively bonded thereto by an adhesive layer positioned between said cured annular rubber strip and said tire inner rubber surface;

    wherein said annular cured rubber strip is in a form of an annular ring positioned in close proximity to, circumferentially around, and spaced apart from the peripheral edge of said internal cavity of said tire;

    wherein said annular cured rubber strip contains;

    (A) an electrically conductive wire as an antenna within said annular cured rubber strip which is substantially coextensive with the length of said annular cured rubber strip, and(B) a microprocessor in a housing for said microprocessor, wherein said annular cured rubber strip passes through said housing and wherein said microprocessor is inductively connected within said housing to said antenna;

    wherein said adhesive layer is comprised of a cured RTV composition comprised of an hydroxyl terminated polysiloxane crosslinked with a methyltris(methyl ethyl ketoximo) silane crosslinking agent, calcium carbonate, carbon black, amorphous silica, and stearic acid;

    wherein said tire inner cured rubber surface to which said adhesive layer is positioned has a three dimensional textured configuration;

    wherein, for said adhesive layer, said hydroxyl terminated organopolysiloxane is comprised of at least one of silanol terminated organopolysiloxane, disilanol terminated organopolysiloxane and disilanol terminated diorganopolysiloxane; and

    wherein said rubber for said tire inner cured rubber surface and said annular cured rubber strip is comprised of at least one of;

    (1) homopolymers and copolymers of at least one of isoprene and 1,3-butadiene and copolymers of at least one of isoprene and 1,3-butadiene with styrene, or(2) isobutylene-based rubbers as copolymers of isobutylene and from about 2 to about 8 weight percent units derived from isoprene and such isobutylene-based copolymers halogenated with chlorine or bromine;

    wherein said inner cured rubber surface of said tire contains a polysiloxane based coating thereon and said adhesive composition is bonded to said polysiloxane coated inner cured rubber surface by the crosslinking of said adhesive therewith.

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