Excavating – Endless digger – Digging chain – bucket – blade – or tooth structure – per se
Reexamination Certificate
2008-07-15
2010-12-21
Pezzuto, Robert E (Department: 3671)
Excavating
Endless digger
Digging chain, bucket, blade, or tooth structure, per se
Reexamination Certificate
active
07854078
ABSTRACT:
In one aspect of the invention, a chain assembly comprises a boom comprising a sliding surface and a plurality of chain links adapted to slide along the sliding surface. At least one polycrystalline ceramic enhanced insert at an interface between the chain links and at least a portion of the sliding surface.
REFERENCES:
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patent: 7375044 (2008-05-01), Yeckley et al.
patent: 7413256 (2008-08-01), Hall et al.
Crockett Ronald
Hall David R.
Tobias Sigmar
Wilde Tyson J.
Pezzuto Robert E
Townsend, III Philip W.
Wilde Tyson J.
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