Low resistance hair clipper blade tooth profile
AssigneeWahl Clipper Corporation
InventorRussell L. Moseman
Life of this patent
Estimating the term…
Abstract
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.
Claims17
A tooth for a blade of a hair cutting apparatus, said tooth comprising:
- a root secured to a base of the blade;
- a tip opposite said root, a longitudinal axis of said tooth defined between said root and said tip;
- a lower, planar cutting surface;
- an upper surface opposite said lower surface;
- sidewalls separating said upper surface from said lower surface;
- and
- at least a portion of said upper surface and said sidewalls being elliptical in the direction of said longitudinal axis beginning at said tip.
A cutting blade for use in a hair cutting apparatus, comprising:
- a base having a first edge and an opposite second edge;
- a plurality of teeth projecting from said second edge, said teeth each defining a longitudinal axis between a root secured to said first edge and a tip opposite said root;
- each of said teeth provided with a lower, planar cutting surface, and opposite upper and sidewall surfaces;
- a cross-section taken of each of said teeth in a plane defined by said tip and being at least one of parallel to said planar cutting surface and perpendicular to said cutting surface and extending along said longitudinal axis defining an ellipse. 11. The blade of claim 10 in which at least one of said teeth, said tip defines an arc ‘X’ transverse to said longitudinal axis, and said longitudinal axis defines an arc ‘Y’, such that ‘Y’>‘X’.
The blade of claim 11 wherein said arc ‘Y’ encompasses less than or equal to ⅓ said longitudinal axis beginning at said tip.
The blade of claim 11 wherein a transition between adjacent ends of the arcs ‘X’ and ‘Y’ is smooth.
Dependencies are inferred from the claim text.