Interlock system for a gasoline dispensing nozzle with a vapor receiving system
US4023601A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 2, 1975 |
| Grant date | May 17, 1977 |
| Priority date | — |
| Expiry date | Sep 2, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67D2007/545
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A dispensing nozzle assembly having a system for receiving the vapors displaced from a motor vehicle gasoline tank when it is being filled, an interlock system for preventing the dispensing of gasoline until the vapor receiving bellows is in contact with the fillpipe of the vehicle gasoline tank, and an attitude control valve system to prevent vapors from the underground storage tanks from being displaced back into the atmosphere through the vapor receiving system. The interlock system includes a valve connected in the vent line running from the end of the discharge spout to the automatic shut-off system in the nozzle housing, said valve being interconnected with the vapor receiving system so that it is closed when the vapor receiving system is not in contact with a fillpipe, causing the automatic shut-off system to prevent dispensing of gasoline.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.