Mineral cutter picks and pick assemblies

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

1985-01-15

1986-11-25

Leppink, James A.

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Cleansing fluid passage

299 17, E21C 3522, E21F 502

Patent

active

046245057

ABSTRACT:
A mineral cutter pick is mounted in a holder. Passages in the pick and the holder supply fluid to an opening near the pick cutting edge. Sleeves are provided in the adjacent ends of the passages in the pick and holder and receive the opposite ends of a tubular connector. 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 to allow free pivoting in their sleeves and at least one end is axially displaceable in its sleeve while maintaining sealing contact.

REFERENCES:
patent: 2740646 (1956-04-01), Bard
patent: 3404904 (1968-10-01), Roe
patent: 4488758 (1984-12-01), Clemmow et al.
patent: 4573744 (1986-03-01), Clemmow et al.
patent: 4583786 (1986-04-01), Thorpe et al.

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