Disc spring providing linear axial motion
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United States of America Patent
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Jun 1, 2021
Grant Date -
Aug 9, 2018
app pub date -
Feb 7, 2018
filing date -
Feb 7, 2017
priority date (Note) -
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Abstract
A force sensing element is used in a pressure transducer. The force sensing element includes a flat, disc-type spring having a unitary body that circumscribes a central axis, and a plurality of spirals that are continuous with each other and extend radially outwardly from the central axis. The plurality of spirals includes nested symmetrical flights having walls with a non-uniform thickness, and the disc spring is uniformly deflectable along the central axis in response to force acting on the disc-type spring. The spring is configured to have a high accuracy and a high fatigue life such that the spring is suitable for use in high-pressure applications that may require repeatability while operating with over 10 million cycles of unidirectional or bi-directional axial loading.
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