Plastic scoring tool
US4010542A · kind A · utility
11Cited by
11References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1975 |
| Grant date | Mar 8, 1977 |
| Priority date | — |
| Expiry date | Jun 27, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B3/08
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A flat spring steel element has a handle portion, an offset shank portion, and a blade portion defining a symmetrically ground chisel edge. The edge is oriented at 45.degree. to the handle axis and each end of the chisel edge is ground to define two scoring tips. One of these tips has a 15.degree. forward rake angle when the tool handle is held perpendicular the surface to be scored, and the other tip has a similar rake angle when the tool handle is held at a slightly inclined position relative to such surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.