Method and apparatus for making continuous grids for lead acid batteries
US4305187A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 1979 |
| Grant date | Dec 15, 1981 |
| Priority date | — |
| Expiry date | May 4, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/185
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In method and apparatus for making continuous strips for lead acid batteries, a strip of lead is advanced through a plurality of successive stations such that zigzag slits are formed on the strip, either in a direction parallel to the longitudinal axis or inclined to the longitudinal axis of the strip, between belt-shaped unslitted edge portions and a central unslitted portion. The strip is then stretched by application of a continuous force substantially simultaneously to the entire width of the slit portion of the strip by successively larger vertical components normal to the plane of the strip between both unslitted edge portions and the central unslitted portion. Simultaneously therewith, frictional resistance is applied to the zigzag slits so that the strip forms a substantially V-shaped cross-section vertical to the advancing direction of the strip to form the grid cells. The V-shaped strip is then leveled and flattened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.