E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
262/83
E21B 10/00 (2006.01) E02F 3/14 (2006.01) E02F 9/28 (2006.01) E02F 5/02 (2006.01)
Patent
CA 2005141
ABSTRACT OF THE DISCLOSURE An L-shaped digging tooth includes a trapezoidally configured shank having inner and outer sides. A toe portion projects laterally from one of its edges. An angle of about 90° ? 30° is defined between the general plane of the toe portion and the plane of the shank. The shank and toe portion terminate in a common, continuous cutting edge of L or V-shaped configuration having a convex outer boundary and a concave inner boundary. This cutting edge intersects at a leading cutter point, a free inner edge of the toe portion which extends along a line con- vergent with the shank portion plane. The tooth is hard-faced over a zone adjacent the common leading edge. The invention further relates to an endless chain excavating assembly which includes the described L-shaped teeth arrayed in a specific sequence with, and geometric relationship to, cup-shaped teeth of a known type, with both secured at spaced intervals to an endless chain.
Charles Machine Works Inc. (the)
Martin J. Scott
Ridout & Maybee Llp
LandOfFree
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