Self renewing working tip mining pick

Details Self renewing working tip mining pick Self renewing working tip mining pick

1979-10-22

1981-07-07

Pate, III, William F.

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

125 43, 299 94, 407118, E21C 2538

Patent

active

042771064

ABSTRACT:
A self renewing working tip tool characterized by a plurality of working tip surfaces on individual laminae assembled in nested relation. The laminae are of hardened steel and each has a hard metal carbide coating thereon. A series of such laminae are bonded together and secured to a suitable tool shank to form a tool useful in breaking concrete, mining coal, and the like, where a hard working surface is required. These tools have an extended working life compared to conventional embodiments.

REFERENCES:
patent: 1859350 (1939-05-01), Wilson
patent: 1965950 (1934-07-01), Walker
patent: 3984910 (1976-10-01), Helton

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