Overflow prevention mechanism for liquid transfer systems
US6584997B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1998 |
| Grant date | Jul 1, 2003 |
| Priority date | — |
| Expiry date | Mar 30, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7306
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An overflow prevention mechanism for use in association with liquid transfer systems of the type including an electrically controllable flow control device such as a pump connected between a source of liquid and a liquid tank, the mechanism including a backup liquid level sensor and a shunt trip breaker or other normally-closed switching device. The backup liquid level sensor senses if the level of liquid within the tank reaches an extreme high level. When the liquid level within the tank reaches the extreme high level the backup liquid level sensor produces an output indicative of the liquid having reached such extreme high level. The shunt trip breaker is connected between the source of electrical energy and the flow control device. The shunt trip breaker is operatively connected to the backup liquid level sensor so as to respond to the production of the backup liquid level sensor output by opening, thereby disconnecting the flow control device from the electrical energy source when the liquid level within the tank reaches the extreme high level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.