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1. (WO1992009422) A METHOD AND AN APPARATUS FOR COATING TYRES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1992/009422 International Application No.: PCT/FI1991/000348
Publication Date: 11.06.1992 International Filing Date: 21.11.1991
IPC:
B29D 30/54 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
D
PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
30
Producing pneumatic or solid tyres or parts thereof
06
Pneumatic tyres or parts thereof
52
Unvulcanised treads, e.g. on used tyres; Retreading
54
Retreading
Applicants:
RAIKAMO, Seppo [FI/FI]; FI
Inventors:
RAIKAMO, Seppo; FI
Agent:
PATENTTITOIMISTO TEKNOPOLIS KOLSTER OY; c/o Oy Kolster Ab Stora Robertsgatan 23 P.O. Box 148 SF-00121 Helsinki, FI
Priority Data:
90577222.11.1990FI
Title (EN) A METHOD AND AN APPARATUS FOR COATING TYRES
(FR) PROCEDE ET APPAREIL DE REVETEMENT DE PNEUS
Abstract:
(EN) A method and an apparatus for retreading a tyre, comprising placing the tyre (14) between press parts (2, 3) in a vulcanizing press (1), and forming a tread pattern (20) by means of matrix blocks (4, 5), whereby the placing of the tyre (14) in the vulcanizing press is further carried out under the guidance of a divisible rim member (9, 10) attached to the opposite parts (2, 3) of the vulcanizing press (1), the matrix blocks (4, 5), a displacing means (29) and its counterpart, or to one or more of the above-mentioned parts, whereby the rim member aligns the tyre (14) to be retreated, and whereby compressed air or the like is fed into the tyre and a pressure space (21) is formed in a space between the tyre (14) and the rim sections. The pressure feed takes place through the periphery of the rim via the periphery of one or more rim sections (9, 10) of the rim member pressed directly together in the vulcanizing press.
(FR) Procédé et appareil permettant de rechaper un pneu, qui consiste à placer le pneu (14) entre des éléments de presse (2, 3) dans une presse de vulcanisation (1) et à former un profil de bande de roulement (20) au moyen de blocs de matrice (4, 5). La mise en place du pneu (14) dans la presse de vulcanisation est exécutée tandis que le guidage est effectué par une jante divisible (9, 10) fixée sur les éléments opposés (2, 3) de la presse de vulcanisation (1), sur les blocs de matrice (4, 5), sur un dispositif de transport (29) et sa contrepartie, ou à l'une ou plusieurs des pièces susmentionnées, de sorte que la jante aligne le pneu (14) à rechaper. Un espace de pression (21) est formé dans l'espace compris entre le pneu (14) et les sections de la jante par injection d'air comprimé dans le pneu ou par tout autre procédé similaire. L'alimentation en pression s'effectue par la périphérie de la jante, à la périphérie de l'une ou de plusieurs section(s) de jante (9, 10) de la jante, comprimées ensemble directement dans la presse de vulcanisation.
Designated States: CA, JP, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: Finnish (FI)