Cutting member with dual profile tip

Details Cutting member with dual profile tip Cutting member with dual profile tip

2005-11-08

2005-11-08

Payer, Hwei-Siu (Department: 3724)

Cutlery

Blades

Razor blade

C030S346500

Reexamination Certificate

active

06962000

ABSTRACT:
The invention relates to a cutting member (7) includes a plate-shaped substrate (19) on which a tip (27) is provided which is bounded by a cutting edge (9). According to the invention, the tip includes an ultimate tip (31) and a basic tip (33), the ultimate tip extending from the cutting edge over a distance d1and having a profile which at least approximates the equation w=a1.dn1, and the basic tip connecting to the ultimate tip and having a profile which at least approximates the equation w=a.(d+R)n, where w is a profile thickness (in μm) and d is a distance (in μm) from the cutting edge (9), and n1is smaller than n, and a1=a.(d1+R)n/d1n1. In this manner, the profile of the ultimate tip is relatively robust and the profile of the basic tip is relatively slender, as a result of which the cutting member has a comparatively high resistance to wear, and the cutting forces of the cutting member are comparatively small.In one example, n1=n.d1/(R+d1), resulting in the basic tip (33) connecting to the ultimate tip (31) without a kink, so that the cutting forces are further reduced. In another example, the ultimate tip and the basic tip comprise a coating (35) made from a material, for example diamond-like carbon, having a higher modulus of elasticity than the material from which the substrate (19) is made.

REFERENCES:
patent: 4720918 (1988-01-01), Curry et al.
patent: 4933058 (1990-06-01), Bache et al.
patent: 5232568 (1993-08-01), Parent et al.
patent: 5669144 (1997-09-01), Hahn et al.
patent: 6684513 (2004-02-01), Clipstone et al.
patent: 0591339 (1994-04-01), None
patent: WO8402104 (1984-06-01), None

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