Dispensing nozzle for vacuum assist vapor recovery system
US4429725A · kind A · utility
49Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1981 |
| Grant date | Feb 7, 1984 |
| Priority date | — |
| Expiry date | Dec 30, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67D7/54
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A liquid dispensing nozzle suitable for use in automobile service stations having vacuum assist vapor recovery systems is disclosed. This nozzle incorporates a check valve for closing the vapor return conduit means at all times when liquid is not being dispensed and a liquid responsive means in the vapor return conduit means for automatically shutting off the dispensing of liquid in the event liquid is aspirated into the vapor return conduit means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.