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US 6,421,938 B1Granted
Endless chain type cutter
AssigneesKobe Steel, Ltd., Tomen Kenki Corporation
InventorKatsumi Kitanaka
Life of this patent
Estimating the term…
Abstract
An endless chain provided with groups of cutter elements thereon, for cutting a ditch in the ground, the cutter elements of each group, together being arranged to cut the ground throughout the width of the ditch. In excavating a ditch the cutter is advanced horizontally at a rate such that in the time the chain has moved a distance corresponding to the length of one group of cutter elements, the cutter has moved horizontally by less than the distance by which the cutter bits project from a base plate of the cutter element.
Claims8
An endless chain type cutter comprising:
- upper and lower sprockets spaced apart along a longitudinal axis;
- an endless chain extending between the upper and lower sprockets along said axis;
- and
- at least one group of cutter elements, mounted on said endless chain, for cutting a ditch of predetermined width, at least some of said cutter elements having a planar configuration, a beveled cutting edge surface and a cutting edge, an entire longitudinal length of said planar configuration being oriented substantially parallel to said longitudinal axis and at least one of said beveled cutting edge surface and said cutting edge being oriented at an angle relative to said longitudinal axis,
- said at least one group of cutter elements including laterally outermost cutter elements spaced apart by said predetermined width, and the cutter elements of said at least one group together being arranged to cut throughout the predetermined width between the laterally outermost cutter elements of said at least one group.
2 more elements
Dependencies are inferred from the claim text.