Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Corrugating
Patent
1994-05-31
1996-06-11
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Corrugating
264523, 264531, 264533, 264535, B29C 4322, B29C 5900
Patent
active
055252885
ABSTRACT:
A method of manufacturing a hose having an expanded portion and a compression formed portion, including making the expanded portion and the compression formed portion integral and almost simultaneously. The manufacturing process is simple and easy, and the number of manufacturing steps is reduced and the cost can be reduced. The process forms the expanded portion and the compression formed portion from a tube. A rigid, middle core member is inserted into at least one end portion of the tube. This structure is then mounted between mold sections which have an expanded interior cavity when closed. The mold sections are then closed and the end between the middle core member and the opposing inner surface of the mold sections are compressed and formed. After that, the tube is expanded in the mold to conform the tube to the cavity surface by introducing pressurized fluid into the interior of the tube. The conformed tube is removed from the mold sections as a hose with expanded and compression formed portions.
REFERENCES:
patent: 2897840 (1959-08-01), Roberts et al.
patent: 2967563 (1961-01-01), Huff et al.
patent: 2983961 (1961-05-01), Titterton et al.
patent: 3028290 (1962-04-01), Roberts et al.
patent: 4119394 (1978-10-01), Cary
Fujii Tetsuya
Ito Shinji
Mori Hiroyuki
Ninomiya Fujio
Gray Robin S.
Silbaugh Jan H.
Toyoda Gosei Co,., Ltd.
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