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US 8,347,512 B2Granted
Cutting members for shaving razors
AssigneeThe Gillette Company
InventorsWilliam Masek, Robert Smith, John L. Maziarz, Joseph A. DePuydt, Ming Laura Xu, Craig Stephen Vickery
Life of this patent
Estimating the term…
Abstract
Cutting members for razors are provided that have been subjected to a localized heat-treating process, e.g., application of laser energy. In some cases, the cutting members include a bent portion, and the localized heat-treating process is used to enhance ductility and thereby facilitate formation of the bent portion.
Claims19
A cutting member for a shaving razor, the cutting member comprising:
- a blade portion and a base portion, the blade portion having a cutting edge region terminated at a free end thereof and an opposing non-cutting edge region, the blade portion being bent relative to the base portion in a bent portion spaced from the cutting edge region and adjacent to the non-cutting edge region, wherein the bent portion extends about 108 degrees to about 115 degrees from the base portion, the bent portion having a radius of about 0.30 mm to about 0.45 mm, at least part of the cutting member has an average thickness of at least 0.076 mm and a hardness of about 540 HV to about 750 HV, and a thickness of the bent portion is less than the average thickness of the cutting member and the thickness of the bent portion is less than a thickness of the base portion and a thickness of the non-cutting edge region.
A cutting member for a shaving razor, the cutting member comprising:
- a blade portion and a base portion, the blade portion having a cutting edge region terminated at a free end thereof and an opposing non-cutting edge region such that a length of the blade portion is about 0.82 mm to about 1.49 mm, the base portion having a length of about 2.22 mm to about 2.36 mm, the blade portion being bent relative to the base portion in a bent portion spaced from the cutting edge region and adjacent to the non-cutting edge region, wherein the bent portion extends about 108 degrees to about 115 degrees from the base portion, the bent portion having a radius of about 0.30 mm to about 0.45 mm, at least part of the cutting member has an average thickness of at least 0.076 mm and a hardness of about 540 HV to about 750 HV, and a thickness of the bent portion is less than a thickness of the base portion and a thickness of the non-cutting edge region.
Dependencies are inferred from the claim text.