Gasoline dispenser with valve control through an air gap
US4986445A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1989 |
| Grant date | Jan 22, 1991 |
| Priority date | — |
| Expiry date | Dec 4, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8376
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A gasoline dispenser system includes a housing with a first enclosure providing a safe area for mounting electrical apparatus, a second enclosure providing a hazaradous area for mounting fuel carrying apparatus, an air gap vapor barrier separating the first and second enclosures, at least one bifurcated electromechanical valve for controlling gasoline flow, having a solenoid winding mounted within the first enclosure, and a valve body mounted within the second enclosure, with a control rod connected from the solenoid winding, through the air gap, to a plunger or control device within the valve body, and with an elastomeric seal about the control rod for secondary sealing where it enters the second enclosure, for substantially preventing gasoline fumes from escaping from the second enclosure into the air gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.