Razor blade cutting edge structure

Details Razor blade cutting edge structure Razor blade cutting edge structure

1988-09-15

1990-04-17

Olszewski, Robert P.

Cutlery

Blades

Razor blade

51285, B26B 2154

Patent

active

049168177

ABSTRACT:
Novel methods and apparatus for providing a facet on opposed surfaces of a cutting instrument such as a razor blade or the like. Essentially, the methods and apparatus are designed to initially abrade opposed surface portions of the instrument concurrently with a relatively high degree of coarseness at a relatively low included angle and thereafter concurrently abrading the opposed surface portions with progressively decreasing degrees of coarseness at progressively increasing included angles. The facets provided by the methods and apparatus on the opposed surfaces of the instrument have a surface in which the included angle decreases as the distance from the edge of the instrument increases.

REFERENCES:
patent: 1734494 (1929-11-01), Kohlmiller
patent: 1828663 (1931-10-01), Jopp
patent: 1941501 (1934-01-01), Steiner
patent: 3461616 (1969-08-01), Nissen et al.
patent: 3494081 (1970-02-01), Taylor et al.
patent: 4265055 (1981-05-01), Cartwright et al.
patent: 4608782 (1986-09-01), Chylinski
patent: 4723375 (1988-02-01), Linden

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