Gravity feed ball-in-seat valve with extension unit for dosing fuel additives
US7216681B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2005 |
| Grant date | May 15, 2007 |
| Priority date | — |
| Expiry date | Mar 7, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2572
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A simple, reliable system is provided for automatically dosing vehicle fuel tanks with a fuel additive, particularly a concentrate containing a fuel borne catalyst (FBC), using gravity as the means of injection, preferably with no electronics or complex mechanical parts. The system includes a supply line for feeding fuel additive by gravity from an additive reservoir and opening into a filler spout of a fuel tank, a ball-in-seat valve at the end of the supply line biased in normally closed position and operable to an open position by mechanically pressing a release on the ball-in-seat valve, and a pivotable lever positioned within the filler spout and including a projection capable of mating with the ball-in-seat valve release upon pivotable movement. Upon insertion of a filler hose into the filler spout, the filler hose moves the lever and projection to press the release on the ball-in-seat valve thereby dispensing additive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.