Cover assemblies for electric storage batteries and batteries utilizing such cover assemblies
US4851305A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1988 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Feb 18, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cover assembly for a multicell, lead-acid electric storage battery, which is capable of having each cell independently pressure checked for leaks by using pressure testing equipment having a pressure head tip is provided, which cover assembly comprises a primary cover member and one or more cover piece members sealed to the primary cover member and substantially defines a venting system comprising process holes for communicating with each cell, a trapping chamber communicating with each process hole, the trapping chambers being manifolded into one or more sets, and an exhaust port communicating with each set of manifolded trapping chambers and the ambient; wherein the process holes comprise a cap, an outer opening receiving the cap, an annular step and a first and second barrel in substantially coaxial alignment with the outer opening, and apertures, the annular step providing a surface upon which may be placed the pressure head tip of said pressure testing equipment for independently pressure checking the cell when the cap is removed from said outer opening, and defining an inner opening having a diameter less than those of the outer opening and the first barrel and for providin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.