Safety device for the movable excavation devices in an underground longwall mine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 18, 2014
Grant Date -
Mar 29, 2012
app pub date -
Jul 12, 2011
filing date -
Jul 30, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A safety device which detects personnel data of persons located in the detection zone thereof, said safety device operating continuously or in regular cycles and reporting to the central controller. The personnel data of all persons located in the longwall mine are stored in a central storage device of the central control and constantly compared to the detected personnel data. If a discrepancy arises between the saved personnel data and the detected personnel data, the central control unit executes a command which halts all functions of the excavation devices and interrupts all moving functions, said command being directed at the switching devices of the associated excavation devices.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully