| 摘要 |
1,219,702. Moulding tyres. SEMPERIT OSTERREICHISCH - AMERIKANISCHE GUMMIWERKE A.G. 21 April, 1969 [26 April, 1968], No. 20152/69. Heading B5A. An inflatable bag 1 for a tyre vulcanizing press is clamped at its edges and has grooves 6 extending from its edges for a relatively short distance, i.e. to not exceed the bead zone of the tyre blank with which the bag is associated, to vent any air trapped between the bag and tyre blank. The grooves may be of different lengths and extend at an angle to the axial direction of the bag. |
