Hair trimmer having a low-friction rotary drive
AssigneeAndis Company
InventorsMatthew L. Andis, John Piwaron
Life of this patent
Estimating the term…
Abstract
A hair trimmer comprising a body, a cutting assembly supported by the body and having a reciprocable cutter, a drive mechanism for reciprocating the cutter, the drive mechanism including a rotating cam, a drive lever engaged with the cam and with the cutter, and a hinge element for flexibly supporting the drive lever in engagement with the cutter and with the cam, the hinge element including a base fixed to the body, a bar fixed to the drive lever and a hinge arm extending between the base and the bar, the hinge arm including a first web and a second web closely spaced to and parallel with the first web.
Claims8
A hair trimmer for use with a cutting head assembly having a reciprocable cutter, said trimmer comprising a body, drive means for reciprocating the cutter, said drive means including a reciprocable drive member, and hinge means supported by said body and supporting said drive member for reciprocal movement in a plane relative to said body, said hinge means including an elongated hinge arm having opposite ends respectively connected to said body and said drive member and having a cross section transverse to said elongation with a height and a first thickness, and said hinge arm including, intermediate said opposite ends, a pivot for affording lateral reciprocal movement of said hinge arm and for preventing deflection of said drive member away from said plane, said pivot comprising a portion of said hinge arm having a second thickness which is substantially reduced in comparison to said first thickness and which extends in the direction of elongation for a distance about equal to said second thickness.
Dependencies are inferred from the claim text.