Electric beard trimmer

The cutting teeth with chamfered tips address the inefficiencies of conventional systems by allowing initial contact cutting and reducing hair deflection, enhancing cutting efficiency and comfort for angled hairs.

JP7869325B2Active Publication Date: 2026-06-02BRAUN GMBH
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Patent Information

Authority / Receiving Office
JP Β· JP
Patent Type
Patents
Current Assignee / Owner
BRAUN GMBH
Filing Date
2023-03-09
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Conventional cutting systems for electric shavers and trimmers face challenges in achieving efficient and smooth hair cutting, particularly for hairs growing at acute angles, due to the tendency of hair to deflect and collide with cutting teeth before being cut, leading to inefficiencies and uneven cutting lengths.

Method used

The cutting teeth are designed with chamfered tips that are inclined backward, reducing the likelihood of hair being pushed out and allowing for initial contact cutting by ensuring the tooth tips are sharp and aligned with the cutting direction, thereby minimizing hair deflection and enhancing cutting efficiency.

Benefits of technology

This design enables first-contact cutting, reducing hair dancing and improving cutting efficiency while maintaining a comfortable and smooth operation, even for hairs growing at angles, by ensuring the tooth tips are sharp and aligned with the cutting direction.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to a cutting device system 3 for an electric shaver and / or trimmer 1, the cutting device system 3 comprising a pair of cooperating cutting blades 4, 5 each having at least one row of comb-like cutting teeth 6, 7, one of the cutting blades being a fixed cutting blade and the other being movable relative to the fixed cutting blade along a cutting plane 8 defined between the cooperating cutting blades, the cutting teeth each having a pair of transverse cutting edges 9 tapering towards a tooth tip 11, at least one tooth tip of the cooperating cutting blade having a flat chamfered leading surface 12, The skin contact surface 14 of the device system guides the cutting blade in the region of the tooth tip on the user's skin and has an inclined front end portion 14f defining an acute angle Ο† with respect to the cutting plane, and the flat chamfered tip surface is inclined at an acute angle Ξ΅ with respect to an imaginary plane 27 which extends parallel to the cutting direction 25 and is perpendicular to the skin contact surface and / or the tangent plane 33 tangential to it, such that the tooth tip contacts the imaginary plane only at the cutting surface having a substantially wedge-shaped gap 29 between the flat chamfered tip surface and the imaginary plane.
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