Cold forged steel grating
US3948013A · kind A · utility
8Cited by
8References
6Claims
0Family size
Inventors
Key dates
| Filing date | May 7, 1975 |
| Grant date | Apr 6, 1976 |
| Priority date | — |
| Expiry date | May 7, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49943
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A cold forged steel grating is formed of a plurality of spaced parallel bearing bars secured to one another by a plurality of spaced parallel cross rods engaged in openings in the bearing bars adjacent their uppermost surfaces with the metal of the bearing bars adjacent the cross rods cold forged into engagement therewith and the metal of the cross rods adjacent the bearing bars flatened by cold forging to forcefully engage the opposite sides of said bearing bars and forming a sturdy rigid grating structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.