| 摘要 |
PURPOSE: A rocket ring is provided to improve the processing property and to reduce the processing cost. CONSTITUTION: A rocket ring body(5) is injection-molded through a raw material of high strength and heat-resisting property. A nozzle installation hole(7) and a bolt hole(9)are installed in the center and the side of a completed rocket ring(40). The raw material is formed by a nylon and a glass. A space forming portion(42) is formed in the completed rocket ring. The bolt hole is inserted in the completed rocket ring. Thereby, the rocket ring is compacted and the strength of the rocket ring body is maintained appropriately.
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