Overfill safety spout for fluid container
US6520386B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Apr 13, 2001 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | Apr 13, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D25/42
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A spout for a liquid container, such as a gasoline container, as well as a container equipped with the spout. The spout comprises a fluid passage and a vent passage fluidically parallel with the fluid passage. The fluid passage has an inlet, an outlet, and an S-shaped portion between the inlet and outlet. The vent passage has an inlet adjacent the outlet of the fluid passage. The S-shaped portion of the fluid passage is configured to entrap a liquid therein, causing a liquid lock to form, when a liquid is dispensed through the spout and air is prevented from flowing through the vent passage. In this manner, the spout is capable of preventing the overfilling of a receptacle tank being filled with fluid dispensed from a container equipped with the spout when the fluid level in the receptacle tank blocks the flow of air into the inlet of the vent passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.