Invention Grant
- Patent Title: Bending beam load cell with enclosure
- Patent Title (中): 弯曲梁称重传感器与外壳
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Application No.: US13141561Application Date: 2009-12-16
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Publication No.: US09255832B2Publication Date: 2016-02-09
- Inventor: Arno Schmittner , Ralf Scherer
- Applicant: Arno Schmittner , Ralf Scherer
- Applicant Address: DE Darmstadt
- Assignee: Hottinger Baldwin Messtechnik GmbH
- Current Assignee: Hottinger Baldwin Messtechnik GmbH
- Current Assignee Address: DE Darmstadt
- Agency: W. F. Fasse
- Priority: DE102008064169 20081222
- International Application: PCT/DE2009/009004 WO 20091216
- International Announcement: WO2010/072364 WO 20100701
- Main IPC: G01L1/26
- IPC: G01L1/26 ; G01G3/12 ; G01G21/30

Abstract:
A load cell includes a longitudinal body including force input and output elements and a bending beam, strain gages, and a hermetically sealed enclosure. A force applied onto the input element perpendicularly to the longitudinal axis causes bending strain of the beam, which is measured by the strain gages. The enclosure includes a stiff pipe sleeve and two ring elements, which each include a membrane that is more flexible than the pipe sleeve, and which support the pipe sleeve relative to and spaced radially away from the longitudinal body. The membranes preferably decouple the pipe sleeve from the longitudinal body so that essentially none of the applied force is shunted into the pipe sleeve. Preferably a cylindrical outer surface of the pipe sleeve can avoid accumulation of contaminants.
Public/Granted literature
- US20120061151A1 Load Cell Public/Granted day:2012-03-15
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