Razors
US5416973A · kind A · utility
42Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1993 |
| Grant date | May 23, 1995 |
| Priority date | — |
| Expiry date | Sep 30, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B21/4025
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A safety razor blade unit has cap structure with upstanding fin elements directed perpendicular to the blade edges to define a cap surface featuring low frictional resistance characteristics during shaving. The fin elements are spaced at a pitch distance of 0.3 to 0.7 millimeter, are 0.3 to 1.0 millimeter in height and are substantially triangular in cross-section with an aspect ratio of 2:1 to 4:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.