Overfill prevention system
US9458005B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 23, 2013 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | Mar 11, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7313
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
This invention relates to an overfill prevention system for preventing the overfilling of tanks when filling up large tanks from a fuel distribution truck. The system operates by monitoring and automatically controlling the filling process by use of a power take off switch assembly that is connected electronically to a secondary overfill prevention system that is also connected to a signal probe located in the tank that is being filled. In operation, once fuel contacts the signal probe, a communicator signal is sent from the signal probe to a secondary overfill prevention system, which interrupts a looping electrical current through a fuel shut off sensor assembly to a power take off switch assembly along a connecting cable. Once the looping electrical current no longer returns to the power take off switch assembly, an indicator light turns off and a pneumatic switch is flipped, which automatically stops the flow of air from the distribution truck's air tank to the power take off that drives a pump that is controlling the flow of fuel. This stops the flow of fuel to the tank and prevents costly, damaging and dangerous overfills.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.