The front cone of a hypoid or bevel gear is an imaginary cone tangent to the inner ends of the teeth, with its elements perpendicular to those of the pitch cone. The surface of the gear blank at the inner ends of the teeth is customarily formed to such a front cone, but sometimes may be a plane on a pinion or a cylinder in a nearly flat gear.
Read more about this topic: List Of Gear Nomenclature
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“Education is a necessity, it helps to understand life. Like that compagnero in Cuba who talked about politics, back when they were on strike. He knew many things, that hijo de puta, and he unraveled the most confusing situations in a marvelous way. You could see each point in front of you on the line of his reasoning like rinsed laundry set up to dry; he explained things to you so clearly that you could grasp it like a good hunk of bread with your hand.”
—Jacques Roumain (1907–1945)