Patent ID: 9427881
Filing Date: 2016-08-30
CPC Classification: B26B

Claim Text:
1. A hair-cutting device, comprising: a reciprocating blade having a cut tooth; and a stationary blade having a guard tooth, wherein the guard tooth has a first end joined to the stationary blade and a second end that is free, the second end having a larger cross-sectional area than the first end, wherein the second end comprises a lower surface bulge in a lower surface of the guard tooth protruding downward from a middle axis of the guard tooth to a lower end, the lower surface bulge being configured to face skin during operation of the hair-cutting device, and wherein the second end further comprises an upper surface bulge in an upper surface of the guard tooth, wherein the bulge in the upper surface of the guard tooth protrudes upward from the middle axis of the guard tooth to an upper end, wherein the upper surface and lower surface bulges have a combined cross-section that has a width and a height, wherein the height is defined as a distance from the upper end to the lower end and the width is a thickness of the second end perpendicular to the middle axis and the height, wherein a center of mass of the second end including the upper surface bulge and the lower surface bulge is below the middle axis.