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1.发明授权
公开(公告)号：US3943867A
公开(公告)日：1976-03-16
申请号：US491371
申请日：1974-07-24
Applicant: Horst-Lothar Erfurt , Holger Kreft , Walter Tronsberg
Inventor： Horst-Lothar Erfurt , Holger Kreft , Walter Tronsberg
IPC: B21D51/24
CPC classification number: B21D51/24 , Y10T29/49893
Abstract: Process for the production of a hollow body of revolution and/or container including the successive steps of forming a dish-shaped blank by a non-cutting shaping operation, forming a bottom portion and an adjoining tubular portion from the blank by a turning operation, and stretching at least the upper part of the bottom portion and the tubular portion to form a convex bottom and pipe portion respectively to form the thin walled body of revolution.
Abstract translation: 用于生产旋转和/或容器的中空体的方法，包括通过非切割成型操作形成碟形坯料的连续步骤，通过转动操作从坯件形成底部和相邻的管状部分， 并且至少拉伸底部的上部和管状部分，以分别形成凸起的底部和管部，以形成薄壁的旋转体。
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公开(公告)号：US4040163A
公开(公告)日：1977-08-09
申请号：US591945
申请日：1975-06-30
Applicant: Walter Tronsberg
Inventor： Walter Tronsberg
CPC classification number: B29C33/52 , B29C53/602 , B29C53/822 , B29C63/24 , B29K2105/06 , B29L2031/7156 , Y10S264/44 , Y10T29/4981 , Y10T29/49893
Abstract: Very light weight containers are made of synthetic resin reinforced by fiber material, such as glass fibers or carbon fibers, by first manufacturing a hollow dimensionally precise core having the shape of the container and including access openings at each end of the container. The composite material is then applied to the prefabricated core and after the setting of the composite material the core is either completely or partially removed by chemical means, which are pumped through the inside of the container to etch away the core, which is, for example, made of aluminum. A very controlled and precise core removal may be accomplished in this manner.
Abstract translation: 通过首先制造具有容器形状的中空尺寸精确的芯，并且在容器的每一端包括进入开口，非常轻的容器由由诸如玻璃纤维或碳纤维之类的纤维材料增强的合成树脂制成。 然后将复合材料施加到预制芯上，并且在复合材料的固化之后，芯通过化学方法被完全或部分地去除，其被泵送通过容器的内部以蚀刻掉芯，例如 ，由铝制成。 可以以这种方式实现非常可控和精确的芯去除。
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