Trenching chain tooth and method for cutting into a body of...

Details Trenching chain tooth and method for cutting into a body of... Trenching chain tooth and method for cutting into a body of...

2008-08-01

2009-11-17

Pezzuto, Robert E (Department: 3671)

Excavating

Endless digger

Digging chain, bucket, blade, or tooth structure, per se

Reexamination Certificate

active

07617621

ABSTRACT:
A trenching chain tooth for cutting ice features a support portion projecting laterally from a mounting portion. A first cutting portion projects to a side of the support portion opposite the mounting portion. A second cutting portion projects laterally from the first cutting portion to the same side as the support portion at a distance therefrom. Each cutting portion features a cutting edge near a leading end of the supporting portion. The cutting edge of the second cutting portion extends obliquely away from that of the first cutting portion toward a trailing end of the supporting portion. Each cutting portion feature stainless steel and, in direction extending away from its respective cutting edge, extends toward the mounting portion. A chain trencher equipped with teeth of this type is positioned a over a body of ice and operated to cut into the body of ice with the trenching teeth from thereabove.

REFERENCES:
patent: 1745090 (1930-01-01), Geithle
patent: 1886382 (1932-11-01), Dunlap
patent: 2589914 (1952-03-01), Wolf
patent: 2946142 (1960-07-01), Swanson
patent: 4651449 (1987-03-01), Rose
patent: 6085448 (2000-07-01), Gale et al.
patent: 6854201 (2005-02-01), Hunter et al.
Robert B. Haehnel, Nonstructural Ice Control, Dec. 1998, US Army Corps of Engineers Cold Regions Research & Engineering Laboratory, U.S.A.

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