Abstract: A method of estimating soil conditions of a work surface during operation of a track-type tractor measures current operating conditions and current operating state to develop adjustments to a nominal pull-slip curve. The adjusted pull-slip curve is used to calculate optimum performance in terms of an input variable such as track speed. Two factors are developed to reflect soil conditions, coefficient of traction and a shear modulus adjustment that affect different portions of the nominal pull slip curve.

Abstract: A track cleaning system for continuous cleaning of an endless track assembly on a machine so equipped. The system has at least one first side wiper bar assembly, and at least one second side wiper bar assembly. The system also has at least one track shoe that is a member of the endless track assembly. A track assembly inside cavity is formed by a track assembly outer periphery of the endless track assembly, where upon rotational operation of the endless track assembly, the track cleaning system rotates about the track assembly inside cavity. Debris is scraped from and away from the track assembly inside cavity and removed. As a result, less debris is introduced to the endless track assembly components of the endless track assembly.

Abstract: A rubber crawler for a tracked vehicle involves an endless rubber belt body for revolving around first and second members that are spaced from each other, which belt body has an outer peripheral face including a plurality of lugs that protrude outwardly from the belt body, each of which lugs has a ground-contacting surface and a sidewall extending outwardly from the belt body to the ground-contacting surface, the sidewall having a groove extending transversely to the length direction of the belt body, and each of which lugs is at least partially made of material that is deformable, at the groove of the sidewall, when the belt body bends to facilitate removal of soil from the groove.

Abstract: A flexible track used for wraparound mounting on construction vehicle tires including a main pad assembly and a lift link assembly. The lift link assembly has a link component and a link pad pivotally connected to the main pad assembly for increasing track flotation and durability. The link component has a link base pivotally connected to the main component of the main pad assembly. The link component also has a link top that has a bonding aperture and is perpendicular relative to the link base forming an overhang. The link pad has a side wrap and under wrap. The link pad is rigidly connected to the link component for reducing track damage to the ground.

Abstract: A track assembly for a skid steer type wheeled vehicle comprises a series of identical track segments, with each of the segments having a wheel or tire retaining flange depending from opposite ends thereof. Each flange has a pair of connecting lugs or tongues extending in one direction (e.g., in the direction of travel), with a single connecting lug extending in the opposite direction. Each lug or tongue pair is positioned to sandwich an opposing single lug or tongue therebetween from an adjacent track segment. Thus, each of the segments connects directly to another identical segment, with no intermediate connecting links being required. The interconnecting lugs or tongues extend straight from their respective flanges with no lateral offset, thus precluding any bending loads upon the lugs and producing a pure shear force across each connecting bolt or pin. The lugs or tongues are preferably hardened for greater durability, with the assembly including bushings for greater bearing area.

Abstract: A crawler belt apparatus includes a drive wheel having engaging teeth, a crawler belt having engaging projections engageable with the engaging teeth, and a plurality of discharge passages formed between root bottoms defined by the engaging projections, and top ends of the engaging teeth, for discharging foreign substances such as dirt and sand entered between the root bottoms and the top ends. The foreign substances passing through the discharge passages are not compressed by the drive wheel and hence do not become a solid mass.