Short-stroke dome-shaped disc film spring

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United States of America Patent

PATENT NO 5720472
SERIAL NO

08689540

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Abstract

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A short-stroke dome-shaped disc film spring comprising a dome-shaped portion and a skirt figure portion, wherein the cross section of the skirt figure portion rises in a line, the rise angel is inclined inward between 40 degrees and 60 degrees, the height of the skirt figure portion is between 0.2 mm and 0.4 mm, and the dome-shaped portion and the skirt figure portion are formed from a resin film of thickness 75 to 200 .mu.m. The dome-shaped film spring has a short stroke at which a feeling of a click is obtained.

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Patent Owner(s)

Patent OwnerAddress
FUJI POLYMERTECH CO LTDCHUO-KU TOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ohgitani, Kenji Tokyo, JP 3 27

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