EP 0148515 B1 19870304 - SHAVING HEAD OF A DRY SHAVER WITH A CURVED STRETCHED SHAVING FOIL
Title (en)
SHAVING HEAD OF A DRY SHAVER WITH A CURVED STRETCHED SHAVING FOIL
Publication
Application
Priority
DE 3340661 A 19831110
Abstract (en)
[origin: US4621423A] A vibratory dry-shaver comprises a shear foil having two longitudinal edges, and respective means to clamp the two longitudinal edges in place to cause the shear foil to assume a natural curvature, the tangents to such curvature at the two clamping means forming an acute angle with each other. A cutter is reciprocatingly movable along and adjacent to the shear foil, the cutting edge of the cutter having a curvature corresponding to that of the clamped, curved shear foil. The curved shear foil and the cutting edge of the cutter each have a hyperbolic cosine curvature according to the formula: y=cxcosh x/c where y indicates the distances of the individual cutting edge points from the x-axis, x is the coordinate in the direction of the width of the cutter, and c is a constant derived from the width 2b of the clamped shear foil and the height of the curvature h of the clamped shear foil.
IPC 1-7
IPC 8 full level
B26B 19/00 (2006.01); B26B 19/02 (2006.01); B26B 19/04 (2006.01); B26B 19/12 (2006.01)
CPC (source: EP US)
B26B 19/04 (2013.01 - EP US)
Citation (examination)
- "Lexikon der Technik und Exacte Naturwissenschaften" Fischer Taschenbuchverlag vom Oktober 1972, Seite 1648.
- "Meyers Lexikon der Technik und der Exakten Naturwissenschaft" Band 2, Bibliographisches Institut Ag, Mannheim, 1970, Seiten 1462/1463.
Designated contracting state (EPC)
AT CH DE FR GB LI
DOCDB simple family (publication)
EP 0148515 A1 19850717; EP 0148515 B1 19870304; AT E25611 T1 19870315; CA 1236280 A 19880510; DE 3340661 A1 19850530; DE 3340661 C2 19910307; DE 3462450 D1 19870409; JP S60116393 A 19850622; US 4621423 A 19861111
DOCDB simple family (application)
EP 84201598 A 19841105; AT 84201598 T 19841105; CA 467391 A 19841108; DE 3340661 A 19831110; DE 3462450 T 19841105; JP 23336584 A 19841107; US 63539284 A 19841011