US4165403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article employing inter-leaved elastic layers and inelastic sheets
Assignee: Individual
•
Filing: 1974-08-01
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Granted: 1979-08-21
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Expires: 1994-08-01
Abstract
Abstract A pneumatic tire includes a breaker belt interposed between the tread and the tire carcass, the belt including opposing elastic layers with a sheet interposed between the layers, the sheet having a plurality of perforations therein and comprising a material having a relatively high modulus of elasticity with respect to the layers.
Inventors
- 👤 Clarence F. Alban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:34
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/06; B32B15/18; B32B3/00; B32B3/26; B32B3/266; B32B38/00; B32B38/04; B60; B60C; B60C9/00; B60C9/18; B60C9/20; B60C9/2003; B60C9/2006; B32B2307/00; B32B2307/50; B32B2307/51; B32B2433/00; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10279; Y10T152/10495; Y10T152/10765; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24339; Y10T428/24347
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
94 words
An article of manufacture comprising: opposing elastic layers; a sheet interposed between said layers, said sheet having a plurality of perforations therein and comprising a material having a relatively high modulus of elasticity with respect to said layers; and wherein the ratio of the thickness of said layers to the thickness of said sheet is given by t.sub.1 /t.sub.2 ≃√ E.sub.2 /E.sub.1 where: t 1 =the composite thickness of said layers, t 2 =the thickness of said sheet, E 1 =modulus of elasticity for said layers, E 2 =modulus of elasticity for said sheet.
Claim 2
Dependent Claim
94 words
An article of manufacture comprising: opposing elastic layers; a sheet interposed between said layers, said sheet having a plurality of perforations therein and comprising a material having a relatively high modulus of elasticity with respect to said layers; and wherein the ratio of the thickness of said layers to the thickness of said sheet is given by t.sub.1 /t.sub.2 ≃√ E.sub.2 /E.sub.1 where: t 1 =the composite thickness of said layers, t 2 =the thickness of said sheet, E 1 =modulus of elasticity for said layers, E 2 =modulus of elasticity for said sheet.
Claim 3
Dependent Claim
15 words
An article as recited in claim 1 with said layers bonded together through said perforations.
Claim 4
Dependent Claim
29 words
An article as recited in claim 2 wherein the area of said perforations is equal to on the order of fifty percent (50%) of the area of said sheet.
Claim 5
Dependent Claim
16 words
An article as recited in claim 3 wherein said perforations are of a generally circular shape.
Claim 6
Dependent Claim
25 words
An article as recited in claim 1 wherein said elastic layers consist essentially of a rubber-like composition and said sheet consists essentially of a metal.
Claim 7
Dependent Claim
23 words
An article as recited in claim 5 wherein said metal consists of a spring steel having on the order of 0.78% carbon content.
Claim 8
Dependent Claim
14 words
An article as recited in claim 5 wherein said metal comprises a stainless steel.
Claim 9
Dependent Claim
26 words
An article as recited in claim 7 wherein said stainless steel comprises a heat treatable 17-7P.H. grade stainless steel having a composition including about 3.6% copper.
Claim 10
Dependent Claim
12 words
An article as recited in claim 5 wherein said metal comprises aluminum.
Claim 11
Dependent Claim
41 words
An article as recited in claim 1 further comprising: an additional one of said elastic layers; and another sheet having a relatively high modulus of elasticity and with perforations therein, interposed between said additional layer and one of said opposing layers.
Claim 12
Dependent Claim
62 words
An article as recited in claim 10 wherein the ratio of the thickness of said layers to the thickness of said sheets is given by t.sub.1 /t.sub.2 ≃√ E.sub.2 /E.sub.1 where: t 1 =the composite thickness of said layers, t 2 =the thickness of said sheets, E 1 =modulus of elasticity for said layers, E 2 =modulus of elasticity of said sheets.
Claim 13
Dependent Claim
30 words
An article as recited in claim 10 wherein said additional elastic layer is bonded to said one opposing layer through said perforations in said another sheet and to said sheet.
Claim 14
Dependent Claim
14 words
An article as recited in claim 10 wherein said sheets comprise a like metal.
Claim 15
Dependent Claim
13 words
An article as recited in claim 10 wherein said sheets comprise differing metals.
Claim 16
Dependent Claim
20 words
An article as recited in claim 14 wherein one of said sheets comprises stainless steel, and the other comprises aluminum.
Claim 17
Dependent Claim
25 words
An article as recited in claim 10 wherein said perforations of said another sheet are out of register with said perforations of said one sheet.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-08-20 | 1983-02-19 | 1983-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-20 | 1987-02-19 | 1987-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-20 | 1991-02-19 | 1991-08-21 | $7700.00 | Window Closed / Lapsed |