Vapor recovery system for fuel dispenser
US5040577A · kind A · utility
145Cited by
17References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 21, 1990 |
| Grant date | Aug 20, 1991 |
| Priority date | — |
| Expiry date | May 21, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67D7/0486
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A system for recovering vapor and liquid emerging from a tank as it is being filled, in which the volumetric flow of a recovery pump that withdraws the vapor through a recovery tube is made equal to the volumetric flow of a fuel delivery pump with a microprocessor. The microprocessor can also modify the volumetric flow of the recovery pump in response to variations in the hydraulic pressure at the inlet side of the recovery pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.