Invention Grant
- Patent Title: Switch detection system
- Patent Title (中): 开关检测系统
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Application No.: US13700232Application Date: 2010-06-02
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Publication No.: US09128155B2Publication Date: 2015-09-08
- Inventor: Gang Xing
- Applicant: Gang Xing
- Applicant Address: US CT Farmington
- Assignee: OTIS ELEVATOR COMPANY
- Current Assignee: OTIS ELEVATOR COMPANY
- Current Assignee Address: US CT Farmington
- Agency: Cantor Colburn LLP
- International Application: PCT/US2010/036994 WO 20100602
- International Announcement: WO2011/152823 WO 20111208
- Main IPC: G01R31/00
- IPC: G01R31/00 ; G01R31/327 ; B66B5/00 ; B66B13/22
Abstract:
A switch detection system (100) includes a first switch (102) having a pole node (153), a normally closed contact (160), and a normally open contact (161), the pole node (153) of the first switch (102) connected to a voltage source node (104), a second switch (102) having a pole node (153), a normally closed contact (160) and a normally open contact (161), the pole node (153) of the second switch (102) connected to the normally closed contact (160) of the first switch (102), a voltage detector (106) connected to the normally closed contact (160) of the second switch (102), a first resistor (108) connected to the normally open contact (161) of the first switch (102), and a second resistor (108) connected to the normally open contact (161) of the first switch (102) and the normally open contact (161) of the second switch (102).
Public/Granted literature
- US20130106422A1 Switch Detection System Public/Granted day:2013-05-02
Information query
