Safety razors
US6216349A · kind A · utility
44Cited by
22References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1998 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Jun 30, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B21/222
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A safety razor blade unit including a guard, a cap, and a group of first, second, and third blades with parallel sharpened edges located between the guard and cap, the blades being resiliently movably mounted and having an at rest condition in which the first blade defines a blade edge nearest the guard having a negative exposure between about -0.04 mm and about -0.06 mm, the third blade defines a blade edge nearest the cap having a positive exposure between about +0.04 mm and about +0.06 mm, and the second blade defines a blade edge having an exposure of about zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.