Protective working device for miners
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Jul 24, 2003
app pub date -
Jan 17, 2003
filing date -
Jan 17, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The present invention relates to a protective working device (1) for miners, comprising a lamp (3) , which can for instance be attached to a protective helmet (2), and which is connected via a cable (4) to a supply battery (11) which can be fastened to an item of clothing such as a belt (6) and is supplied with electrical energy from the supply battery (11). A transponder device (13) is supplied with energy from the same battery (11) which interoperates with underground personnel detection systems such as detection sensors which monitor the working and operating areas of support frames for underground faces or of underground mining machines. In order to ensure the energy supply for the transponder device (13) over a significantly longer period than before and to provide the safety functions of the personnel detection system even under mining accidents, a safety circuit device (12) is provided, which switches off the energy supply to the lamp (3) if the remaining charge in the supply battery (11) falls below a predetermined remaining charge.
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