Safety razors
US8117753B2 · kind B2 · utility
30Cited by
73References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2010 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Jun 24, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B21/4031
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A safety razor blade unit has two or more blades (19,20,21) with parallel cutting edges (24,25,26) mounted in a frame (10) between guard and cap surfaces so that the average inter-blade span is not greater than 1.25 mm, and the wash through index, a measure of the rinsability obtained by a method defined in the specification, is not less than 0.20. The combination of narrow inter-blade spans and good rinsability enables enhanced comfort levels during shaving to be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.