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US6224164B1

A mining machine that has a chassis that defines an operator area thereon and has a mining assembly attached thereto A vertically extending shield assembly is supported on the chassis to prevent material that is dislodged during the mining process from inadvertently entering the operator area The shield assembly may be selectively vertically extendable and may be equipped with a ventilation ....

FR2647870A1

A batter stepped piston 4 is slidably mounted in a cylinder 2 which defines an annular front chamber 13 permanently connected to a pressurized oil inlet 16, and a rear annular chamber 14, alternately connected to the inlet pressurized oil 16 and oil starting 17 to the tank through a control valve 18 with drawer differential sections 19 an annular damping chamber 43, formed around the front ....

FR2647870A1

Dans certaines applications miniéres, il convient de prévoir sur la partie avant du piston frappeur une pluralité de gorges ou rainures longitudinales, ou de méplats, assurant les fonctions d'isolement ou de mise en communication de la chambre avant du cylindre avec la ,...

The new Bison 280 crusher from EvoQuip

The new Bison 280 crusher from EvoQuip - Retrouvez toute l'actualité de POWERSCREEN INTERNATIONAL, sur granulat, le portail des mines et carrières...