Safety razor
US6434839B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2001 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Feb 13, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B21/225
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A safety razor is disclosed. In this razor, the head of the handle allows a blade cartridge to move on the curved skin while being smoothly, sensitively and elastically rotated around the hinged points. The razor is also provided with separate elastic biasing members for respectively allowing the desired elastic swinging action of the blade cartridge relative to the head and allowing an easy attachment or removal of the blade cartridge relative to the head. In the safety razor, the hinged points of the cartridge are positioned at the front end of the head at a position below the central axis of the cartridge, thus allowing the cartridge to be rotatable backward around the hinged points at an enlarged swing angle when a user unconsciously and excessively presses the cartridge against the skin while shaving. This razor thus safely and cleanly shaves the face while maintaining a uniform skin contact area and uniform skin contact pressure without damaging or cutting the skin regardless of a variety of cutting resistances applied to the cartridge due to various hair densities and various curvatures of the face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.