Invention Grant
- Patent Title: Capacitive control element with improved malfunction immunity
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Application No.: US15241420Application Date: 2016-08-19
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Publication No.: US10177762B2Publication Date: 2019-01-08
- Inventor: Alain Dani , Xiaoxi Li , Jochen Schlereth , Tobias Bodenstein
- Applicant: Preh GmbH
- Applicant Address: DE Bad Neustadt a.d. Saale
- Assignee: Preh GmbH
- Current Assignee: Preh GmbH
- Current Assignee Address: DE Bad Neustadt a.d. Saale
- Agency: Walter | Haverfield LLP
- Agent Sean F. Mellino; D. Peter Hochberg
- Priority: DE102015113694 20150819
- Main IPC: G01L1/14
- IPC: G01L1/14 ; H03K17/98 ; H03K17/96

Abstract:
A control element comprising a support; a control part which defines at least one operating surface, which is movable or elastically yielding if an operating force F acts upon the operating surface; a layer structure that is disposed between the control part and the support and that is elastically deformed if an operating force F acts on the operating surface. The layer structure has at least one first electrode associated with the support and a second electrode, which is associated with the control part and disposed underneath the operating surface, for the definition of a measuring capacity varying in accordance with the operating force. The layer structure further has an intermediate layer having a recess which is disposed between the first and second electrodes for defining a hollow chamber; and means for venting the hollow chamber. The means for venting is integrated at least partially into the intermediate layer.
Public/Granted literature
- US20170052073A1 Capacitive control element with improved malfunction immunity Public/Granted day:2017-02-23
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