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US4998980A Expired / Lapsed US ⏱️ 0.0 years remaining

Casting tire including continuous circumferential sidewall indentations

Assignee: Sumitomo Rubber Industries Ltd
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Filing: 1988-10-03
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Granted: 1991-03-12
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Expires: 2008-10-03
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Abstract

Abstract A casting tire includes an elastic main body having a tread surface and sidewall surfaces extending one from each edge of the tread surface. The main body is provided with at least one indentation in part of a region including the tread surface and the sidewall surfaces, whereby the tire can be manufactured by casting elastic material, such as rubber and synthetic resin, using a casting mould, and the tire exhibits characteristics similar to that of the pneumatic tires.

Inventors

  • 👤 Masayuki Katou

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 08:46
CPC Classifications
B; B60; B60C; B60C7/00; B60C7/10; B60C7/107

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 73 words
A casting tire comprising: an elastic main body having a tread surface and sidewall surfaces each extending from one edge of said tread surface, the main body being provided with at least one indentation on each of the sidewall surfaces, the indentations extending substantially to the tire equatorial plane from the sidewall surface in the axial direction of the tire, and the indentations extending substantially continuously in the circumferential direction of the tire.
Claim 2
Dependent Claim 73 words
A casting tire comprising: an elastic main body having a tread surface and sidewall surfaces each extending from one edge of said tread surface, the main body being provided with at least one indentation on each of the sidewall surfaces, the indentations extending substantially to the tire equatorial plane from the sidewall surface in the axial direction of the tire, and the indentations extending substantially continuously in the circumferential direction of the tire.
Claim 3
Dependent Claim 15 words
A casting tire according to claim 1, wherein said main body is made of rubber.
Claim 4
Dependent Claim 16 words
A casting tire according to claim 1, wherein said main body is made of synthetic resin.
Claim 5
Dependent Claim 31 words
The tire according to claim 1, wherein the main body is provided on each of the sidewall surfaces with at least two indentations arranged in the radial direction of the tire.
Claim 6
Dependent Claim 30 words
The tire according to claim 4, wherein the indentations are provided in the radial direction of the tire so that the indentations alternate in the radial direction of the tire.
Claim 7
Dependent Claim 22 words
The tire according to claim 5, wherein the indentations extend beyond the tire equatorial plane in the axial direction of the tire.
Claim 8
Dependent Claim 54 words
The tire according to claim 6, wherein the elastic main body has an circumferential inner portion for being fitted with a tire rim, said inner portion comprising a rib part for insertion into a well of a tire rim and a base part for being fitted on the bead seats of said tire rim.
Claim 9
Dependent Claim 116 words
A casting tire comprising a main body and a tread, the main body being made of a synthetic resin and provided on each side thereof with at least one indentation extending inwardly of the tire to decrease the radial rigidity of the main body, and the tread being made of a rubber and disposed on the periphery of the main body, wherein the main body has sidewall surfaces each extending from one edge of said tread, and wherein the indentations are provided in the sidewalls and extend substantially to the tire equatorial plane from the sidewall surface in the radial direction of the tire, said indentations extending substantially continuously in the circumferential direction of the tire.
Claim 10
Dependent Claim 116 words
A casting tire comprising a main body and a tread, the main body being made of a synthetic resin and provided on each side thereof with at least one indentation extending inwardly of the tire to decrease the radial rigidity of the main body, and the tread being made of a rubber and disposed on the periphery of the main body, wherein the main body has sidewall surfaces each extending from one edge of said tread, and wherein the indentations are provided in the sidewalls and extend substantially to the tire equatorial plane from the sidewall surface in the radial direction of the tire, said indentations extending substantially continuously in the circumferential direction of the tire.
Claim 11
Dependent Claim 31 words
The tire according to claim 8, wherein the main body is provided on each of the sidewall surfaces with at least two indentations arranged in the radial direction of the tire.
Claim 12
Dependent Claim 30 words
The tire according to claim 9, wherein the indentations are provided in the radial direction of the tire so that the indentations alternate in the radial direction of the tire.
Claim 13
Dependent Claim 22 words
The tire according to claim 10, wherein the indentations extend beyond the tire equatorial plane in the axial direction of the tire.
Claim 14
Dependent Claim 54 words
The tire according to claim 11, wherein the elastic main body has an circumferential inner portion for being fitted with a tire rim, said inner portion comprising a rib part for insertion into a well of a tire rim and a base part for being fitted on the head seats of said tire rim.

References Cited (Backward Citations)

DE6859C Cited
US826622A Cited
US1040074A Cited
GB195260A Cited
US1477564A Cited
US1641150A Cited
US1597381A Cited
US1662007A Cited
US4140165A Cited
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US4071279A Cited
GB2119724A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-03-11 1994-09-10 1995-03-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-03-11 1998-09-10 1999-03-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-03-11 2002-09-10 2003-03-12 $7700.00 Window Closed / Lapsed

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