Venturi liquid evacuator system for maintaining clear vapor path in vapor recovery hose
US4687033A · kind A · utility
110Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 1986 |
| Grant date | Aug 18, 1987 |
| Priority date | — |
| Expiry date | May 19, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67D7/0488
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In a coaxial hose system for a fuel distribution system, a product delivery hose is centrally located within a vapor recovery hose, whereby the area between the product and vapor hoses provides a return path for vapors developed at a nozzle during refueling of a vehicle. A venturi pump is located in the product hose, and operable over a range of flow rate of the fuel through the product hose, for sucking fuel back into the product hose from an area of the vapor path where fuel may accumulate due to backflow from the nozzle, thereby substantially insuring a clear vapor path and more complete delivery of metered fuel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.