Abstract: A master link for a track of a machine includes a first link member having a profiled surface with a sinusoidal segment defined by a tooth and an adjacent recess. The master link further includes a second link member configured complementarily to the first link member, their respective profiled surfaces together defining a mating interface for transmitting loads therebetween. A machine further includes a track having a single tooth master link wherein profiled surfaces on adjacent link members together define a mating interface for transmitting loads through the track, each of the profiled surfaces having a sinusoidal segment.

Abstract: A mixture, casting system and method for forming a polyurethane product. The mixture typically includes a slurry including an alcohol containing at least two hydroxyl groups, and calcium carbonate. Typically, the calcium carbonate is present in the slurry in a range of between about 40% and 70% by weight. The mixture also includes an isocyanate mixed into the slurry such that isocyanate forms between about 10% and 50% by weight of the resulting mixture, the remainder of the resulting mixture being slurry. The mixture also may include a chain extender, cross-linking agent, or polymerization catalyst.

Abstract: A flame-intumescent coating is provided for a wood-based building product, the coating being adapted to expand to form an expanded coating when exposed to heat from a fire. The coating comprises a polymeric binder, at least one blowing agent dispersed in the binder, and at least one intumescent compound dispersed in the binder. The blowing agent and intumescent compound are adapted to expand the coating when the coating is exposed to heat from a fire. The polymeric binder is formed from a mixture including castor oil and an isocyanate, wherein the castor oil is present in the mixture in a quantity of 9-36% of the total weight of the coating. A flame-retardant building product is also provided.

Abstract: A physiological measurement system for electrically sensing heart activity of a plurality of patients and providing on a single display tube, divided into sections, one for each patient, composite displays consisting of an ECG waveform, a digital readout of heart rate, and permissible heart rate limits indicated by markers between which a heart rate marker is relatively positioned in terms of its value and the value of the limits.