Low resistance hair clipper blade tooth profile

摘要

A tooth for a blade of a hair cutting apparatus includes a root secured to a base of the blade, a tip opposite the root, and a longitudinal axis of the tooth defined between the root and the tip. A lower, planar cutting surface is provided on the tooth, as is an upper surface opposite the lower surface, and sidewalls separating the upper surface from the lower surface. At least a portion of the upper surface and the sidewalls is elliptical in the direction of the longitudinal axis, beginning at the tip.

主权项

1. A tooth for a blade of a hair cutting apparatus, said tooth comprising:
a root secured to a base of the blade and having four flat sides; a tip opposite said root, a longitudinal axis of said tooth defined between said root and said tip; a lower, planar cutting surface having a peripheral edge with an arcuate portion; an upper surface opposite said lower surface; generally parallel and generally planar sidewalls separating said upper surface from said lower surface near said root; at least a portion of said upper surface and said sidewalls being a portion of an ellipse in the direction of said longitudinal axis beginning at said tip and terminating at said root, a cross-section taken near said tip is “D”-shaped, with a sole straight line being defined by said lower, planar cutting surface; a radiused transition area defining a tip distance between said lower planar cutting surface and said upper surface at said tip such that said transition area blends smoothly into said planar cutting surface, wherein a distance from said tip of tooth to said root is greater than a distance from a distal end of said peripheral cutting edge to said root.