Method and apparatus for making grain bin flooring
US4736610A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1986 |
| Grant date | Apr 12, 1988 |
| Priority date | — |
| Expiry date | Mar 27, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/496
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Corrugated grain bin floor plates are manufactured from flat metal sheets by a progressive die set in a punch press. A metal sheet is fed into a slitting section of the die set to form slits in the sheet extending in the longitudinal direction of the sheets. The sheet is then fed to a corrugating section of the die where the sheet is corrugated with the corrugations running longitudinally of the sheet. The metal along the slits is stretched and reformed to form openings covered by an upper hood to prevent grain from falling through the openings. The openings are located at a neutral axis for the corrugations. The bending and drawing of the metal in the sheet provides an increase in the strength of the grain floor plates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.