Rotary type electric shaver
US7356929B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 14, 2006 |
| Grant date | Apr 15, 2008 |
| Priority date | — |
| Expiry date | Feb 14, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B19/143
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A rotary shaver including an outer cutter frame (18) provided on a shaver main body (10), an outer cutter (14) that is installed in this outer cutter frame (18) and has ring-shaped thin layer portions (28a, 28b) whose upper surfaces are the shaving surfaces, and an inner cutter (16) that has cutter bodies (38) that rotates and make sliding contact with the lower surface of the thin layer portions of the outer cutter to cut hair that entered hair introduction openings (30a, 30b) formed in the thin layer portions; wherein the hair introduction openings have a slit shape extending in substantially the radial direction of the thin layer portions, and the cutting edge angle (p, q) at the lower end(s) of the side wall surface(s) of the hair introduction openings (30a, 30b) defined by the ribs (32a, 32b) is an acute angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.