BATTERY LOW-VOLTAGE WARNING APPARATUS FOR AUTO-DARKENING FILTER FOR WELDING HELMET

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专利权人:

Gang Chen

发明人:

Gang Chen

申请号：

US12498113

公开号：

US20130174312A1

申请日:

2009.07.06

申请国别(地区):

US

年份:

2013

代理人:

摘要：

An apparatus for annunciating low-voltage in a battery supplying electricity to an auto-darkening optical filter system (10) for a welding helmet (not shown). Low voltage is annunciated by changing, for example strobing, the opacity of the optical filter system (10).

来源网站：

中国工程科技知识中心

来源网址：

http://www.ckcest.cn/home/