| 摘要 |
<p>657,037. Dry shavers. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. May 17, 1946, No. 14976. Convention date, Jan. 13, 1942. [Class 131] In a dry shaver a rotary cutting member 5 co-acts with an annular running surface 4 provided on an apertured cutting plate 1 the operative portion of the cutting plane being thinner at its inner edge 6 than at its outer edge 7. The gradation in thickness of the cutting plate may be obtained by a gradual taper or by the formation of one or more steps.</p> |
