Lip and tooth combination for bucket wheel excavator
AssigneeSuncor, Inc.
InventorsStanton F. Bierwith, Robert S. Bierwith
Life of this patent
Estimating the term…
Abstract
Removable bucket wheel teeth are provided with a rectangular-in-cross section shank portion and forwardly sloped shoulder areas for insertion into a complementarily-configured socket in a bucket lip. The resulting assembly is much more rigid and wears better than prior art tooth and lip configurations and tends to fracture preferentially when overstressed.
Claims14
A removable tooth system for an excavating bucket comprising:
- (A) a rigid bucket lip of generally U-shaped configuration viewed head on from the work engaging side of said lip, wherein the base of the "U" is substantially straight;
- (B) a plurality of transversely spaced and generally longitudinally extending sockets distributed over the base and legs of the "U" for receiving the shank portions of respective excavating teeth;
- (C) a plurality of excavating teeth, one of said excavating teeth affixed in each said socket, each of said excavating teeth comprising:
- (a) a socket engaging shank portion, said shank portion having forward, central, and rear sections, said forward section having generally parallel upper and lower surfaces, said rear section having generally parallel upper and lower surfaces more closely spaced than said upper and lower surfaces of said forward section, said central section having upper and lower surfaces tapering from a rear edge of said forward section to a forward edge of said rear section;
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- (b) a work engaging distal portion having rearwardly directed upper and lower faces joining to said forward section of said shank portion, said upper and lower faces being angularly disposed with respect to one another and to the axis of said shank portion such that said upper and lower faces meet at a line segment generally parallel to said upper and lower surfaces to said forward section of said shank portion.
In an excavating system employing a bucket lip provided with a plurality of sockets for receiving a corresponding plurality of removeable excavating teeth, the improvement in which each of said excavating teeth comprises:
- (A) a socket engaging shank portion, said shank portion having forward, central, and rear sections, said forward section having generally parallel upper and lower surfaces, said rear section having generally parallel upper and lower surfaces more closely spaced than said upper and lower surfaces of said forward section, said central section having upper and lower surfaces tapering from a rear edge of said forward section to a forward edge of said rear section;
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- (B) a work engaging distal portion having rearwardly directed upper and lower faces joining to said forward section of said shank portion, said upper and lower faces being angularly disposed with respect to one another and to the axis of said shank portion such that said upper and lower faces meet at a line segment.
Dependencies are inferred from the claim text.