公开(公告)号：US20180222574A1

公开(公告)日：2018-08-09

申请号：US15890787

申请日：2018-02-07

Applicant: Parker-Hannifin Corporation

Inventor： Jason Zoolakis ,  David Hilton ,  Edward Hyrlik

IPC: B64C13/50 ,  G01D5/22 ,  G01L1/04

CPC classification number: B64C13/504 ,  F16F1/025 ,  F16F1/10 ,  G01D5/2291 ,  G01L1/046 ,  G01L7/082 ,  G01L13/025

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.

公开(公告)号：US11021238B2

公开(公告)日：2021-06-01

申请号：US15890787

申请日：2018-02-07

Applicant: Parker-Hannifin Corporation

Inventor： Jason Zoolakis ,  David Hilton ,  Edward Hyrlik

IPC: G01L1/04 ,  B64C13/50 ,  G01D5/22 ,  F16F1/02 ,  G01L7/08 ,  G01L13/02 ,  F16F1/10

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.