METHOD OF MAKING ELASTIC TUBULAR ARTICLES REINFORCED BY REINFORCEMENT SPIRAL Russian patent published in 2012 - IPC B29C53/72 B29D23/00 F16L11/10

Abstract RU 2460645 C2

FIELD: machine building.

SUBSTANCE: proposed method comprises winding reinforcement spiral on mandrel and distributing elastic tubular shell over said spiral. Said reinforcement spiral represents spring with dead state diameter exceeding that of said shell. Used mandrel features diameter smaller than that of said shell. Spring is wound on mandrel to mandrel diameter to secure spring ends to mandrel. Elastic tubular shell is fitted on reinforcement spiral and released after tensioning spring ends.

EFFECT: expanded applications.

3 cl, 2 ex

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RU 2 460 645 C2

Authors

Degtjarev Nikolaj Jur'Evich

Dates

2012-09-10—Published

2010-10-04—Filed