Mineral cutter picks and pick assemblies

Details Mineral cutter picks and pick assemblies Mineral cutter picks and pick assemblies

E - Fixed Constructions

21

C

262/83

E21C 35/187 (2006.01)

Patent

CA 1237451

ABSTRACT "MINERAL CUTTER PICKS AND PICK ASSEMBLIES" A mineral cutter pick (2) is mounted in holding means (6, 8) with passages (10, 12) in the pick and the holding means for supplying fluid to an opening near the pick cutting edge. Respective sealing sleeves (16, 18) are provided in the adjacent ends of the passages in the pick and holding means and receive the opposite ends of a tubular connector (14). At least one of the sealing sleeves has its outer face exposed to the fluid supply pressure so that sealing with the associated end of the connector is assisted by the pressure force. The ends of the connector are formed as spherical enlargements (26, 28) to allow free pivoting in their sleeves and at least one end is axially displaceable in its sleeve while maintaining sealing contact. In this way axial and angular misalignments and movements between the pick and the holding means can be acommodated without disturbing the fluid supply. (Fig. 2)

472017

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