US 11,653,738 B2
Lice comb and methods of manufacture and use
Justin Robert Smith, Lombard, IL (US); and Wayne A. Huerth, North Barrington, IL (US)
Assigned to William V. MacGill & Co., Lombard, IL (US)
Filed by William V. MacGill & Co., Lombard, IL (US)
Filed on Jun. 3, 2020, as Appl. No. 16/891,370.
Prior Publication US 2021/0378380 A1, Dec. 9, 2021
Int. Cl. A45D 24/30 (2006.01); A45D 24/02 (2006.01)
CPC A45D 24/30 (2013.01) [A45D 24/02 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A plastic lice treatment comb comprising:
a grip portion molded from a plastic resin, wherein the grip portion includes a front surface and a back surface;
a plurality of rigid tines extending from the grip portion of the comb in a linear arrangement, wherein each rigid tine includes a base portion having a cylindrical structure and a tip portion having a rectangular structure beveled on a front surface and planar on a back surface, and wherein the rigid tines have a draft angle between 2 and 180 degrees;
a pair of guard tines for resisting sideway deflection of the plurality of rigid tines, each guard tine located along an exterior lateral edge of the plurality of rigid tines, each guard tine including, a tip portion beveled on a front surface and planar on a back surface, wherein the front beveled surfaces of the guard tines are continuous with the front beveled surfaces of the plurality of rigid tines;
an elongated plastic flow ridge located adjacent to respective base portions of the rigid tines on the front surface of the grip portion; and
a plastic flow restriction channel located on the back surface of the grip portion, wherein the plastic flow restriction channel is positioned further from the respective base portions of the rigid tines than the elongated plastic flow ridge.