Method and apparatus for manufacturing slip stopper
US7021109B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2002 |
| Grant date | Apr 4, 2006 |
| Priority date | — |
| Expiry date | Apr 25, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60P7/0884
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An easy manufacturing method of a slip stopper, and apparatus therefor, that has a great slip stopping effect and can be used for a location where a problem occurs if a though hole is opened therein. After a protruding portion is formed on a steel plate, by using a first punching die unit, so as to protrude from the upper surface in a plate thickness direction, a concave portion and drain channels are formed in the protruding portion by shear planes that extend substantially perpendicular to the steel plate upper surface and have been half-blanked so as not to open a through hole in the steel plate by using a second punching die unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.