Shaving system
AssigneeThe Gillette Company
InventorsHenryk J. Chylinski, Chester F. Jacobson, Timothy M. Salisbury, Frederick R. Borden
Life of this patent
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Abstract
A shaving system of the wet shave type includes support structure and blade structure secured to the support structure. The blade structure has an aperture with an annular sharpened shaving edge that is defined by main facet portions that converge at an angle of less than 40.degree. and supplemental facet portions that are extensions of the main facet portions and converge at an included angle of less than 60.degree. to define an annular ultimate tip portion. The annular ultimate tip of the sharpened edge defines a shaving plane and the bisector of the included angle defined by the supplemental facets is disposed at an angle (shaving angle) in the range of 15.degree.-35.degree. to the shaving plane.
Claims18
A shaving system of the wet shave type comprising support structure and blade structure secured to said support structure, said blade structure having an aperture that defines an annular sharpened shaving edge that is defined by main facet portions that converge at an angle of less than 40.degree., and supplemental facet portions that are extensions of said main facet portions and converge at an included angle greater than said main facet portions and less than 60.degree. to define an annular ultimate tip portion that is disposed within a boundary region defined by imaginary line extensions of said main facet portions, said annular ultimate tip defining a shaving plane and the bisector of the included angle defined by said supplemental facet portions being disposed at an angle (shaving angle) in the range of 15.degree.-35.degree. to said shaving plane.
A blade member for mounting on a support structure of a wet shave type shaving system, said blade member having a generally tubular upstanding body portion of predetermined height that defines a central aperture, and an integral, inwardly facing flange at the upper end of said body portion, an annular sharpened shaving edge formed on the inner edge of said flange, said annular sharpened shaving edge being defined by main facet portions that converge at an angle of less than 40.degree., imaginary line extensions of said main facet portions defining a boundary region, and supplemental facet portions that are extensions of said main facet portions and converge at an included angle greater than said main facet portions and less than 60.degree. to define an annular ultimate tip portion that is disposed within said boundary region, said annular ultimate tip portion defining a shaving plane and a bisector of the included angle defined by said supplemental facet portions being disposed at an angle in the range of 15.degree.-35.degree. to said shaving plane.
Dependencies are inferred from the claim text.