EP0943466A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Tire with sidewall carcass reinforcement
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1999-03-09
•
Granted: —
•
Expires: 2019-03-09
Abstract
Abstract A tire (1) having at least one crescent-shaped rubber composition as an insert (12) in its sidewall region (4) which is comprised of at least one diene-based elastomer, carbon black and, optionally, silica and at least one of dithiodipropionic acid, benzoic acid and salicylic acid.
Inventors
- 👤 Paul Harry Sandstrom
- 👤 Raymond Dean Mcquate
- 👤 Mark Samuel Sinsky
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 16:46
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; B; B60; B60C; B60C1/00; B60C1/0025; B60C17/00; B60C17/0009; C08K5/36; C08K5/37; C08K5/372; B60C2001/0033
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
237 words
A tire (1) comprised of a toroidally-shaped
carcass and an outer, circumferential tread (2) designed to
be ground contacting, wherein said carcass is comprised of
two spaced apart inextensible bead portions (3), two spaced
apart sidewalls (4) each individually extending radially
inward from and connecting said tread to said bead
portions, and at least one cord reinforced ply (10)
extending from bead to bead and through the sidewalls; an
improvement characterized in that a substantially crescent
shaped rubber insert (12) is juxtapositioned to and axially
inward of at least one of said carcass plies (10) in each
of said sidewalls (4) of the tire (1); wherein the rubber
composition of said insert (12) has a Shore A hardness at
100°C in a range of 65 to 85, a 100 percent Modulus in a
range of 3.5 to 10, a Hot Rebound at 100°C in a range of 60
to 80, an E' value in a range of 2 to 20 MPa at 60°C and a Tan.Delta value at 60°C in a range of 0.03 to 0.15; and
wherein said rubber composition of said insert (12) is
comprised of, based on 100 parts by weight rubber, (A) at
least one diene-based elastomer, (B) 30 to 100 phr of
particulate reinforcement as carbon black and, optionally,
silica, and (C) 0.5 to 10 phr of a material selected from
at least one of dithiodipropionic acid, benzoic acid and
salicylic acid.
Claim 2
Dependent Claim
78 words
The tire (1) of claim 1 characterized in that
said carbon black and/or silica filler is pre-treated with
at least one of said acids to form a composite thereof and
said composite is first blended with ingredients for said
rubber composition in the absence of free sulfur and of
vulcanization accelerators and free sulfur and
vulcanization accelerators subsequently mixed with the
rubber composition; wherein said acid(s) is adsorbed,
absorbed, coated or melt-sprayed onto the surface of said
filler.
Claim 3
Dependent Claim
41 words
The tire (1) of claim 1 characterized in that
said acid is blended in-situ with ingredients for said
rubber composition in the absence of free sulfur and
vulcanization accelerators and free sulfur and
vulcanization accelerators subsequently mixed with the
rubber composition.
Claim 4
Dependent Claim
17 words
The tire (1) of any of the preceding claims
characterized in that said acid is 3,3'-dithiodipropionic
acid.
Claim 5
Dependent Claim
35 words
The tire (1) of any of the preceding claims
characterized in that said insert (12) is substantially in
an entrunkated crescent shape, where the entrunkated
portion thereof is juxtapositioned to the said tire bead
portion.
Claim 6
Dependent Claim
54 words
The tire (1) of any of the preceding claims
characterized in that said tire carcass has from two to
three plies (10) comprised of a first axially inner ply and
one or two additional plies as a second ply and third ply,
respectively, each additional ply positioned sequentially
axially outward from said first ply.
Claim 7
Dependent Claim
48 words
The tire (1) of any of claims 1-5 characterized
in that said tire carcass contains an axially inner first
ply and an axially outer second ply; wherein said insert
(12) is juxtapositioned to and axially inward of said first
ply, in the sidewall region (4) of the tire.
Claim 8
Dependent Claim
48 words
The tire (1) of any of claims 1-5 characterized
in that said carcass contains an axially inner first ply
and an axially outer second ply; wherein said insert (12)
is juxtapositioned to and interposed between said first and
second ply, in the sidewall region (4) of the tire.
Claim 9
Dependent Claim
32 words
The tire (1) of claim 8 characterized in that
another of said inserts (12) is juxtapositioned to and
axially inward of said first ply, in the sidewall region
(4) of the tire.
Claim 10
Dependent Claim
34 words
The tire (1) of any of claims 7, 8 and 9
characterized in that said second ply (10) extends
substantially from bead to bead through the sidewalls
without connecting with the bead portion (3).
Claim 11
Dependent Claim
58 words
The tire (1) of claim 1 characterized in that the
carcass contains an axially inner first ply, a second ply
axially outward from said first ply and a third ply axially
outward from said second ply; wherein said insert is
juxtapositioned to and interposed between said second and
third plies, in the sidewall region (4) of the tire.
Claim 12
Dependent Claim
32 words
The tire (1) of claim 11 characterized in that an
additional insert (12) is juxtapositioned to and axially
inward of said first ply (10) in the sidewall region (4) of
the tire.
Claim 13
Dependent Claim
114 words
The tire (1) of any of the preceding claims
characterized in that said innermost insert has a Shore A
hardness in a range of 65 to 75, a 100 percent modulus in a
range of 3.5 to 8 MPa, and E' in a range of 2 to 15 MPa at
60°C and a Tan.Delta at 60°C in a range of 0.03 to 0.1 and
said outward insert(s) has Shore A hardness in a range of
70 to 85, a 100 percent modulus in a range of 5 to 10 MPa,
and E' in a range of 5 to 20 MPa at 60°C and a Tan.Delta at
60°C in a range of 0.05 to 0.15.
Claim 14
Dependent Claim
37 words
The tire (1) of any of the preceding claims
characterized in that the cords of said innermost ply are
of steel, carbon fiber or fiberglass and the cords of said
outer ply(ies) are of nylon or rayon.
Claim 15
Dependent Claim
33 words
The tire (1) of claim 14 characterized in that
the cords of said innermost ply are brass and/or zinc
coated steel and the cords of said outer ply(ies) are of
nylon or rayon.
Claim 16
Dependent Claim
101 words
The tire (1) of claim 1, characterized in that
said material (C) is 3,3'-dithiodipropionic acid; wherein
said carcass contains at least two plies with an insert
juxtapositioned to and interposed between each of the plies
and an additional insert juxtapositioned to and axially
inward of the innermost ply; wherein the cords for the
innermost ply are of brass and/or zinc plated steel and the
cords for the outermost ply (plies) are of nylon or rayon;
and wherein said insert(s) have a maximum thickness about
midway between the bead portions (3) and tread (2) in the
sidewall region (4) of the tire.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.