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US 10,625,331 B2Granted
Method of manufacturing bent razor blades
AssigneeThe Gillette Company
InventorsWei Han, Ming Laura Xu, John Lawrence Maziarz
Life of this patent
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Abstract
A method of manufacturing a razor blade by providing a razor blank strip having an edge. The razor blank strip is hardened to a hardness greater than 600HV. A pre-bending zone that is spaced apart from an edge of the razor blank is melted with a laser beam. The pre-bending zone is cooled after melting to form a re-solidification portion. The razor blank strip is segmented into individual blades. The individual blades are bent in the pre-bending zone.
Claims13
A method of manufacturing a plurality of razor blades comprising:
- providing razor blank strip having an edge;
- hardening the razor blank strip to a hardness greater than 600 HV;
- melting a pre-bending zone of the razor blank strip that is spaced apart from the edge with a laser beam;
- cooling the pre-bending zone after said melting to form a re-solidified portion;
- segmenting the razor blank strip into individual blades;
- and
- bending the individual blades in the pre-bending zone to form a bent portion.
4 more elements
A method of manufacturing a plurality of razor blades comprising:
- providing razor blank strip having an edge;
- hardening the razor blank strip to a hardness greater than 600 HV;
- melting a pre-bending zone of the razor blank strip that is spaced apart from the edge with a laser beam;
- cooling the pre-bending zone after said melting to form a re-solidified portion;
- tensioning the strip of razor blanks during said melting and said cooling;
- segmenting the razor blank strip into individual blades;
- and
- bending the individual blades in pre-bending zone, wherein said melting comprises heating the pre-bending zone with the laser beam to a temperature greater than 1100 C.
5 more elements
Dependencies are inferred from the claim text.