Pneumatic rubber tire having annular rubber strip containing electrically conductive bonded to its inner surface
First Claim
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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Accused Products
Abstract
A pre-cured pneumatic rubber tire of open toroidal shape having a pre-cured rubber strip, comprised of at least one elastomer and which contains at least one electrically conductive element, adhesively bonded to an inner surface of the tire'"'"'s cavity. The adhesive is an RTV polysiloxane comprised of an hydroxyl terminated (silanol terminated) polysiloxane and crosslinking agent. The adhesive is applied as a layer, or coating, thereof onto a surface of said pre-cured rubber strip, and/or onto a corresponding pre-cured inner surface of said pre-cured tire, and the resulting coated pre-cured rubber strip and inner surface of said pre-cured tire brought together with said layer of adhesive therebetween and the adhesive allowed to cure and thereby bond said strip to said tire inner surface. In one aspect of the invention, said strip is an annular pre-cured rubber strip bonded to the tire'"'"'s inner surface in its crown region or to said tire inner surface circumferential with and close to the periphery of the tire'"'"'s open cavity. In another aspect of the invention, said tire inner surface is of a textured configuration and optionally contains a thin coating thereon of a polysiloxane material. In a further aspect of the invention, said pre-cured rubber strip contains a transducer and/or microprocessor inductively and/or electrically connected to said electrically conductive element(s), for example a wire antenna, contained in said rubber strip.
27 Citations
1 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;
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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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Specification