Liquid filling device
US6164309A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 8, 1999 |
| Grant date | Dec 26, 2000 |
| Priority date | — |
| Expiry date | Sep 8, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/6579
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A liquid filling device for watering batteries comprises a body having first and second water ports that extend through the body and connect within it to first and second water passages that are independent of one another. A trap is disposed the device at a position below the first and second water passages. A bell chamber is disposed at an outlet of the trap and includes an open end. Water passes through the device via a one of the first or second water passages, through the trap, through the bell chamber and into a battery cell. The device traps a volume of air therein and pressurizes the trapped air, as the electrolyte level in the cell rises to a determined level, to an amount at least equal to the head pressure of water in the device, thereby terminating further water flow into the cell. The device includes a gas vent for releasing gas pressure from the cell to the atmosphere or to collection for further treatment. The device is operated by imposing a pressure differential, by either pressure or vacuum conditions, between water inlet and outlet passages of sufficient amount to effect water flow into and through the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.