Invention Grant
- Patent Title: Switching apparatus and method
- Patent Title (中): 开关装置和方法
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Application No.: US11537207Application Date: 2006-09-29
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Publication No.: US07672096B2Publication Date: 2010-03-02
- Inventor: David M. Messersmith , Thomas A. Nondahl
- Applicant: David M. Messersmith , Thomas A. Nondahl
- Applicant Address: US OH Mayfield Heights
- Assignee: Rockwell Automation Technologies, Inc.
- Current Assignee: Rockwell Automation Technologies, Inc.
- Current Assignee Address: US OH Mayfield Heights
- Agency: Whyte Hirschboeck Dudek, S.C.
- Agent Alexander R. Kuszewski; John M. Miller
- Main IPC: H02H3/00
- IPC: H02H3/00 ; H02H7/00

Abstract:
An improved switching apparatus and method are disclosed. In at least some embodiments, the apparatus includes first and second ports, a first switching device such as a contactor coupled between the ports, and a second switching device coupled in parallel with the contactor between the ports, where the second switching device can be or include a solid-state semiconductor device. The second switching device is operated to become conductive at a first time prior to a second time when the contactor switches between a conductive state and a non-conductive state, and remains conductive up to a third time subsequent to the second time. In at least some further embodiments, the apparatus also includes one or both of a voltage sensing capability and a current sensing capability and switches the second switching device to become conductive based upon voltage and/or current information.
Public/Granted literature
- US20080094771A1 Switching apparatus and method Public/Granted day:2008-04-24
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