Device for illuminating step support of long wall face has light sources connected to control network devices provided for the low voltage supply of limited number of associated system controllers
WO2004055330A1
Timbering and walling control for controlling the movements of timbering and walling units in the coal face of a mine
DE10357958A1
Hydraulic valve
AU2003291958A1
Control mechanism for the extension units in the longwall face of a mine
WO2004055329A1
Timbering and walling control for controlling the movements of timbering and walling units in the coal face of a mine
AU2003291956A1
Coal face support in a mine
DE10350032A1
Contact-free safety switch, e.g. for controlling a machine, comprises redundant read units that interact with a transponder, such that a release or switching code will only be transmitted if both units authorize a code word
WO2004016900A1
Mobile working tool with a tool head
AU3168102A
Coupling for explosion-proof connection of two electric line ends
DE10065428A1
Hydraulic seat valve contains conical, parabolic or hemispherical piston arranged so that its cross-section decreases towards closing position, piston moving in guides which keep it in straight line and being biased towards closed position
