BR9917300A - Construction of empty running tire with canvas cords having a variable modulus of elasticity - Google Patents
Construction of empty running tire with canvas cords having a variable modulus of elasticityInfo
- Publication number
- BR9917300A BR9917300A BR9917300-0A BR9917300A BR9917300A BR 9917300 A BR9917300 A BR 9917300A BR 9917300 A BR9917300 A BR 9917300A BR 9917300 A BR9917300 A BR 9917300A
- Authority
- BR
- Brazil
- Prior art keywords
- canvas
- elasticity
- modulus
- variable
- construction
- Prior art date
Links
- 238000010276 construction Methods 0.000 title abstract 2
Landscapes
- Tires In General (AREA)
Abstract
"CONSTRUçãO DE PNEUMáTICO DE FUNCIONAMENTO VAZIO COM CORDõES DE LONA POSSUINDO UM MóDULO VARIáVEL DE ELASTICIDADE". O pneumático (70) da invenção incorpora um material de cordão de lona de carcaça (93) com módulo de elasticidade variável para fornecer uma estrutura de costado ativa (82a, 82b). O material de cordão de módulo variável é incorporado à lona axialmente mais externa (90) de uma carcaça (80) possuindo duas lonas (88, 90) separadas por insertos elastoméricos (89a, 89b) nos costados (82a, 82b). O material de cordão de lona externa (93) fornece um módulo de elasticidade aumentado com um aumento no alongamento. Os cordões de lona interna (91) possuem um módulo que excede substancialmente o dos cordões de lona externa (93) sob cargas normais no modo inflado. Dessa forma, a lona interna (88) domina a resposta estrutural dos costados (82a, 82b) a cargas normais no modo inflado. Sob uma deformação de costado severa, tal como quando o pneumático não está inflado, o cordão de lona externa (93) é alongado, aumentando seu módulo de elasticidade e dessa forma, mudando a carga da lona axialmente mais interna (88) para a lona axialmente mais externa (90)."CONSTRUCTION OF EMPTY OPERATING PNEUMATICS WITH CANVAS CORDS WITH A VARIABLE ELASTICITY MODULE". The tire (70) of the invention incorporates a carcass canvas cord material (93) with variable elastic modulus to provide an active side structure (82a, 82b). The variable modulus cord material is incorporated into the axially outermost canvas (90) of a housing (80) having two plies (88, 90) separated by elastomeric inserts (89a, 89b) in the sides (82a, 82b). The external canvas cord material (93) provides an increased modulus of elasticity with an increase in elongation. The inner canvas strands (91) have a module that substantially exceeds that of the outer canvas strands (93) under normal loads in the inflated mode. Thus, the inner canvas (88) dominates the structural response of the sides (82a, 82b) to normal loads in the inflated mode. Under severe side deformation, such as when the tire is not inflated, the outer canvas cord (93) is elongated, increasing its elasticity modulus and thereby changing the load from the axially innermost canvas (88) to the canvas axially more external (90).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR9917300-0A BR9917300A (en) | 1999-05-18 | 1999-05-18 | Construction of empty running tire with canvas cords having a variable modulus of elasticity |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR9917300-0A BR9917300A (en) | 1999-05-18 | 1999-05-18 | Construction of empty running tire with canvas cords having a variable modulus of elasticity |
| PCT/US1999/011081 WO2000069661A1 (en) | 1999-05-18 | 1999-05-18 | Runflat tire construction with ply cords having a variable modulus of elasticity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR9917300A true BR9917300A (en) | 2002-02-19 |
Family
ID=25665512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR9917300-0A BR9917300A (en) | 1999-05-18 | 1999-05-18 | Construction of empty running tire with canvas cords having a variable modulus of elasticity |
Country Status (1)
| Country | Link |
|---|---|
| BR (1) | BR9917300A (en) |
-
1999
- 1999-05-18 BR BR9917300-0A patent/BR9917300A/en not_active IP Right Cessation
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B09A | Decision: intention to grant [chapter 9.1 patent gazette] | ||
| B16A | Patent or certificate of addition of invention granted [chapter 16.1 patent gazette] |
Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 18/05/1999, OBSERVADAS AS CONDICOES LEGAIS. |
|
| B21F | Lapse acc. art. 78, item iv - on non-payment of the annual fees in time |
Free format text: REFERENTE A 16A ANUIDADE. |
|
| B24J | Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12) |
Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2308 DE 31-03-2015 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013. |