Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Protective circuit for intrinsically safe electro-magnetic actuators, and protective circuit for intrinsically safe energy supply systems

Protective circuit for intrinsically safe electro-magnetic actuators, and protective circuit for intrinsically safe energy supply systems

US Patent 7872846 · Granted Jan 18, 2011

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Hydraulic assembly for a mining system2018
Intrinsically-safe battery power supply for underground mining2013
Protection circuit for intrinsically safe electro-magnetic actuators and a prote2010
Housing cover for switching solenoid housing2009
Individual controller for shield support frames2007
Mining solenoid2007
Controller for underground mining2007
Assembly for use in underground mining2006
Pressure cell device for measuring hydraulic pressures2006
Method and a device for operating an electro-magnet on an intrinsically safe dir2006
Method and circuit arrangement for measuring earth leakages in intrinsically saf2005
Intrinsically safe electrically magnetically operated hydraulic valve2004