Thermoplastic bellows and method of forming the same
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United States of America Patent
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-
Sep 13, 1994
Grant Date -
N/A
app pub date -
Feb 2, 1993
filing date -
Feb 2, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A bellows for use in fluid control devices includes a head, a shoulder, a blind hole extending from an opening in the shoulder to the head, and a hollow compressible neck between the head and the shoulder, through which the blind hole extends. The neck includes a thin-walled, circumferential band located between the shoulder and the head. The bellows is formed by forming, in a body of thermoplastic material, an inner bore having an inner diameter. Next, at least one thin-walled circumferential band is formed between the head and the shoulder. Finally, the body is deformed to cause each circumferential band to bow.
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