Patent US1742958A successfully refreshed from Google Patents.
EP0133150A2
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EP
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Closed torus tire
Assignee: Goodyear Tire and Rubber Co
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Filing: 1984-07-24
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Granted: —
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Expires: 2004-07-24
Abstract
Abstract A circumferentially extending rib member (56) protrudes radially outwardly from the annular base region (42) of the carcass of a closed torus tire (10) to the same extent as the roll-restraining hoop portions (44,46) of the carcass. The roll-restraining hoop portions and the radially outwardly protruding rib member act in concert as a runflat device in the event that the tire becomes uninflated during use.
Inventors
- 👤 Richard Lloyd Crossmann
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 17:45
CPC Classifications
B; B60; B60C; B60C3/00; B60C3/02; B60C15/00; B60C15/02; B60C15/0233; B60C17/00; B60C17/04; B60C17/06; B60C17/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
128 words
A closed torus pneumatic tire (10) comprising a carcass (36) defining a toroidal-like closed inflation chamber (38), said carcass having an annular base region (42) with a roll-restraining hoop portion (44,46) located at each axial end of said annular base region, each roll-restraining hoop portion having a radially outer circumferential surface (45,47); said tire being characterized by a circumferentially extending rib member (56) protruding radially outwardly from said annular base region, said rib member having a radially outer circumferential surface (58) that is cylindrical; and the radially outer circumferential surface of said rib member being disposed at the same distance from a radially outer surface (60,62) of said annular base region, as measured in a radial direction, as the radially outer circumferential surfaces of said roll-restraining hoop portions.
Claim 2
Dependent Claim
128 words
A closed torus pneumatic tire (10) comprising a carcass (36) defining a toroidal-like closed inflation chamber (38), said carcass having an annular base region (42) with a roll-restraining hoop portion (44,46) located at each axial end of said annular base region, each roll-restraining hoop portion having a radially outer circumferential surface (45,47); said tire being characterized by a circumferentially extending rib member (56) protruding radially outwardly from said annular base region, said rib member having a radially outer circumferential surface (58) that is cylindrical; and the radially outer circumferential surface of said rib member being disposed at the same distance from a radially outer surface (60,62) of said annular base region, as measured in a radial direction, as the radially outer circumferential surfaces of said roll-restraining hoop portions.
Claim 3
Dependent Claim
31 words
A closed torus pneumatic tire according to claim 1 further characterized by said radially outwardly protruding rib member (56) being symmetrical with respect to the mid-circumferential plane (30) of said tire.
Claim 4
Dependent Claim
75 words
A closed torus pneumatic tire according to claim 1 further characterized by said radially outwardly protruding rib member (56) being symmetrical with respect to the mid-circumferential plane of said tire (30), and further comprising a circumferentially extending rib member (54), that is symmetrical with respect to the mid-circumferential plane of said tire, protruding radially inwardly from said annular base region (42) and having a smaller axial width than said radially outwardly protruding rib member (56).
Claim 5
Dependent Claim
82 words
A closed torus pneumatic tire according to any of claims 1, 2 or 3 further characterized by the ratio of: (a) the sum of the axial widths (63,64,65) of the radially outer circumferential surfaces of said roll-restraining hoop portions and said radially outwardly protruding rib member; to (b) four times the radial distance (59) from the radially outer circumferential surface of said radially outwardly protruding rib member to a radially outer surface of said annular base region; being between 1.0 and 1.5.
Claim 6
Dependent Claim
102 words
A closed torus pneumatic tire according to any of claims 1, 2 or 3 further characterized by the radially outer circumferential surface (80) of said radially outwardly protruding rib member having at least one circumferentially extending groove (82) therein such that said radially outer circumferential surface is divided into a plurality of segments with .respect to the axis of rotation of said tire, each said groove having a radial depth (84) that is less than the radial distance (86) from the radially outer .circumferential surface of said radially outwardly protruding rib member to a radially outer surface of said annular base region.
Claim 7
Dependent Claim
65 words
A closed torus pneumatic tire according to claim 5 further characterized by the ratio of: (a) the sum of the axial widths (63,64) of the radially outer circumferential surfaces of said roll-restraining hoop portions and the axial widths (92,94,96) of the segments of the radially outer circumferential surface of said radially outwardly protruding rib member; to (b) the sum of four times the radial distance
Claim 8
Dependent Claim
42 words
(86) from the radially outer circumferential surface of said radially outwardly protruding rib member to a radially outer surface of said annular base region, plus two times the sum of the radial depths (84) of said grooves; being between 1.0 and 1.5.
Claim 9
Dependent Claim
42 words
(86) from the radially outer circumferential surface of said radially outwardly protruding rib member to a radially outer surface of said annular base region, plus two times the sum of the radial depths (84) of said grooves; being between 1.0 and 1.5.
References Cited (Backward Citations)
No citation records indexed.
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