Safety razors
US6212777A · kind A · utility
139Cited by
13References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 1996 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | May 17, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B21/4031
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A safety razor blade unit including a guard, a cap, and a group of three blades with parallel sharpened edges located between the guard and cap, the first blade defining a blade edge nearest the guard having a negative exposure not less than -0.2 mm, and the third blade defining a blade edge nearest the cap having a positive exposure of not greater than +0.2 mm, the second blade defining a blade edge having an exposure not less than the exposure of the first blade and not greater than the exposure of the third blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.