Cutlery – Razors – With cooperating shearing blades
Patent
1977-11-14
1979-04-24
Watson, Robert C.
Cutlery
Razors
With cooperating shearing blades
3034651, B26B 1904
Patent
active
041504828
ABSTRACT:
A modular cutter assembly for an electric dry shaver of the type wherein movable cutter assemblies are disposed in shearing relationship with a flexible comb assembly. Each of the cutter assemblies is easily removable or replaceable as a modular unit from the cutter drive shafts of the shaver head. The modular cutter assemblies are assembled by the insertion of alternating cutter blade element assemblies and cutter blade spacers within a cutter support structure with a predetermined interrelationship and orientation of the aforementioned subassembly parts to achieve a consistently and accurately disposed cutter system.
Each of the plurality of cutting blade element assemblies of each cutter assembly of the shaver is formed by two individual cutter blades having oppositely inclined outwardly angled cutting edges providing a desirable cutting edge geometry in a back-to-back relationship heretofore achievable only by the undercut grinding in two inclined directions of a single cutter blade or by coining to achieve a similar configuration. The two back-to-back individual cutter blades utilized to form the single cutter blade element assembly of each cutter assembly are fabricated as identical parts and mounted in a back-to-back reverse orientation to thereby achieve the oppositely inclined outwardly angled edges of the cutter blade pair. The individual cutter blades are fabricated with integrally formed biasing members which urge the cutter blade edges into accurate conformance with the comb assembly and establish a uniform consistent biasing force during operation.
REFERENCES:
patent: 2331500 (1943-10-01), Rand
patent: 3218707 (1965-11-01), Schell
patent: 4012837 (1977-03-01), Ascoli
Beck William P.
Carr Francis L.
Sunbeam Corporation
Watson Robert C.
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