Digging tooth and holder therefor

Details Digging tooth and holder therefor Digging tooth and holder therefor

1984-04-16

1986-06-17

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Miscellaneous

37142R, E21C 3518

Patent

active

045952418

ABSTRACT:
A non-rotatable digging tooth has a forward working portion designed to excavate dirt, with a rearward cylindrical shank portion of a configuration to be removably received within the circular bore of a support block. The block includes a forward projection which forms a shoulder having a face positioned substantially parallel to the axial centerline of the bore. The juncture between the shank and digging part of the tooth is provided with a shoulder made complementary respective to the shoulder on the support block so that the two shoulders confront one another. The confronting shoulders abuttingly engage one another and provide a resisting force which prevents rotation of the tooth respective to the block. The block can be attached to various different trenching and digging apparatus.

REFERENCES:
patent: 1210366 (1916-12-01), Reisinger
patent: 1890997 (1932-12-01), Lane
patent: 2229267 (1941-01-01), Younie
patent: 2263215 (1941-11-01), Larsen
patent: 3203488 (1965-08-01), Eastwood
patent: 3357117 (1967-12-01), 37
patent: 3629964 (1971-12-01), Russel
patent: 3737199 (1973-06-01), Stephenson
patent: 3778112 (1973-12-01), Krekeler
patent: 3841709 (1974-10-01), Kniff
patent: 3856359 (1974-12-01), Krekeler
patent: 3992061 (1976-11-01), Rollins
patent: 4316636 (1982-02-01), Taylor et al.
patent: 4337980 (1982-07-01), Krekeler

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