Switch for a brush wear recording circuit

Details Switch for a brush wear recording circuit Switch for a brush wear recording circuit

2009-04-24

2011-12-27

Trans, Xuong Chung (Department: 2833)

Electricity: circuit makers and breakers

Capacitive switch

C310S242000, C310S245000, C310S248000, C310S249000

Reexamination Certificate

active

08084704

ABSTRACT:
A switch for a brush wear monitoring recording circuit for monitoring wear of at least one brush, the switch having an open and a closed state, comprises a fixed part including a switch plate having a switch face and a moving part including a capacitive flag disposed on a brush so as to move the capacitive flag corresponding to a brush wear movement in a brush wear direction and a capacitive plate having a capacitive face, wherein the capacitive face and the switch face are disposed parallel to each other and provide capacitance to the switch, and further wherein the capacitive flag is disposed on the brush so as to bring the capacitive face and the switch face in proximity to each other so as to face each other and increase capacitance, thereby changing the switch state.

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European Search Report for EP 08155159 mailed Dec. 30, 2008.
Co-pending U.S. Appl. No. 12/429,627, filed Apr. 24, 2009, entitled “Brush wear monitor”.
Co-pending U.S. Appl. No. 12/429,764, filed Apr. 24, 2009, entitled “Switch for a brush wear recording circuit”.
Search report from EP 2 112 519 A3 published on Nov. 4, 2009.

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