Sealed lead-acid cells and batteries having internal and external restraint for accommodating plate growth
US5876873A · kind A · utility
8Cited by
12References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1997 |
| Grant date | Mar 2, 1999 |
| Priority date | — |
| Expiry date | Jan 21, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Sealed lead-acid cells are disclosed which include an internal cell restraint contacting the interior surface of the cover and positioned between the positive plates and the cover, the internal cell restraint cooperates with an external cell restraint, such as a coated metal face plate, to direct positive plate growth which occurs in service away from the cover, the features disclosed allowing plastic-to-plastic terminal post-cover seals to be used and allow cells of capacities of up to 2,000 Ampere Hours or more to be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.