Patent ID: 7628424
Filing Date: 2009-12-08
Classification: E02F

Abstract:
1. A trenching chain for use with a boomed trenching excavator, the trenching excavator including a boom with a distal having an idler sprocket including a plurality of radially extending teeth, and a drive sprocket including a plurality of distally extending teeth mounted at an opposite end of the boom, the chain comprising: a plurality of links pivotably attached to each other; each link having a single piece body, the body of each link including a front and a rear, an inner surface and an outer surface, and a pair of opposing side extensions; a plurality of lugs cooperating to define a plurality of openings between the lugs on the front of the body, a plurality of lugs cooperating to define a plurality of openings between the lugs on the rear of the body, the openings of the front configured to receive the lugs of the rear and the openings of the rear configured to receive the lugs of the front; a pin extending through the lugs of adjacent links to hingedly connect adjacent links to each other; the side extensions of each link extending beyond the lugs and sized to fit between and engage the teeth of the sprockets of the boom; the inner surface of each link configured for engaging and passing along a boom of the trenching excavator, and an outer surface configured to engage the ground and form a trench when the chain is passed along the boom.