Method of making tires

Abstract

Abstract A METHOD FOR MAKING TIRES WHICH INCLUDE A SEPARABLE MOLD WHICH HAS AN INNER SURFACE WHICH DEFINES THE OUTER SHAPE OF A TIRE TO BE FORMED. A GENERALLY FLAT PADDLE SHAPED TEMPLATE MEMBER EXTENDS GENERALLY RADIALLY WITHIN THE MOLD WHEN IT IS ASSEMBLED AND THE CROSS SECTIONAL SHAPED OF THE TIRE IS DETERMINED BY THE SPACE BETWEEN THE TEMPLATE AND THE INNER SURFACE OF THE MOLD. THE MOLD IS ROTATED ABOUT ITS AXIS WHILE THE TEMPLATE MEMBER IS PREFERABLY HELD IN A FIXED POSITION. A FLOWABLE AND HARDENABLE ELASTOMERIC MATERIAL SUITABLE FOR USE IN CONSTRUCTING TIRES (SUCH AS POLYURETHANE) IS INTRODUCED INTO THE ROTATING MOLD AND CENTRIFUGAL FORCE URGES THE FLOWABLE MATERIAL TO THE INNER SURFACE OF THE MOLD AND WHEN SUFFICIENT ELASTOMERIC MATERIAL HAS BEEN ADDED, THE WIPING ACTION OF THE TEMPLATE MEMBER ON THE ELASTOMERIC MATERIAL FORMS THE INNER SHAPE OF THE TIRE. THE MATERIAL HARDENS AND THE MOLD, THE TEMPLATE MEMBER AND FINISHED TIRE ARE SEPARATED. THE TEMPLATE MEMBER IS PREFERABLY HELD IN A FIXED POSITION, HOWEVER, IT MAY BE ROTATED AT A SLOWER SPEED THAN THE MOLD OR IN A REVERSE DIRECTION. D R A W I N G

Inventors

• 👤 Heinz Wilhelm Beneze

Bibliographic Details