| 主权项 |
1. A dry shaver unit comprising:
a housing having an opening formed in a wall thereof; and at least one cutter blade assembly mounted in the housing and disposed proximate to the opening, the cutter blade assembly comprised of:
a cutter blade having a cutter blade surface oriented toward the opening in the housing for shaving hair extending from a skin of a user; andan elongated flexible foil having a skin-engaging surface on one side thereof and an inner cutter blade surface on the other side thereof, the foil overlaying the cutter blade such that the skin-engaging surface is spaced from the cutter blade surface, the foil including:
a plurality of uniformly narrow diameter hair entry openings extending through the foil for holding hairs at the surface of the skin and for aligning the hairs relative to the cutter blade surface such that the hairs are generally held perpendicular to the cutter blade surface, the thickness of the foil defining a spacing between the cutter blade surface of the cutter blade and the skin-engaging surface of the foil, wherein the spacing increases continuously and uniformly from a minimum spacing at a first portion of the cutter blade assembly to a maximum spacing at a second portion of the cutter blade assembly, wherein the first and second portions are arranged at substantially opposite ends of the foil and a plurality of portions of said foil, each having a different thickness, are simultaneously available for application to a surface to be shaved and wherein all of the hair entry openings over the entire field of said foil have the same narrow diameter and wherein the foil is movable within the housing relative to the cutter blade surface such that the spacing between the cutter blade surface and the skin-engaging surface may be selectively varied. |
