Shaving head for rotary shaver and method of manufacturing the same

A shaving head for a rotary shaver, said shaving head comprising:

• a one-piece, generally cup-shaped metal body having an internal cavity for receiving a rotary cutter, a comb portion comprising an outer surface for contacting skin to be shaved and an inner surface in part defining the internal cavity, the comb portion having a plurality of openings therein defined by opposed sidewalls having respective generally arcuate surfaces, the comb portion having a thickness in the range of about 0.0025 inches to about 0.0055 inches, the sidewalls generally curving inward toward each other in a concave manner as the openings extend from the outer surface of the comb portion toward the inner surface thereof,
• the intersection of at least one sidewall of at least one of said openings with the inner surface of the comb portion of the body defining a cutting edge having a positive rake angle, wherein the shaving head further comprises an annular sidewall depending from the comb portion of said shaving head, the shaving head sidewall having a thickness, the thickness of the comb portion of the shaving head being substantially less than the thickness of said sidewall of said shaving head.