Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Wear shield or replaceable wear sleeve
Patent
1996-06-13
1998-10-20
Bagnell, David J.
Mining or in situ disintegration of hard material
Cutter tooth or tooth head
Wear shield or replaceable wear sleeve
299111, E21C 35183
Patent
active
058236325
ABSTRACT:
A self-sharpening nosepiece with skirt construction for attack tools including a nosepiece which replaces a conventional cutting element on the tip of the work engaging end of the tool to provide improved longevity and cutting characteristics and produce less dust, and a skirt which overlays portions of the side of the work engaging end of the tool and the nosepiece to support the nosepiece and to prevent the erosion of the tool and the dislodgment and loss of the nosepiece, the present nosepiece and skirt construction being adapted for use with attack tools for mining, excavating, removing highway road surfaces and the like, and optionally including a layer of a super hard material on the outer surfaces thereof to provide even greater wearability and durability.
REFERENCES:
patent: 4497520 (1985-02-01), Ojanen
patent: 4682987 (1987-07-01), Brady et al.
patent: 4911503 (1990-03-01), Stiffler
patent: 4981328 (1991-01-01), Stiffler et al.
patent: 5141289 (1992-08-01), Stiffler
patent: 5161627 (1992-11-01), Burkett
patent: 5161859 (1992-11-01), Larsson et al.
patent: 5484191 (1996-01-01), Sollami
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