Dispensing nozzles
US5645115A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 1994 |
| Grant date | Jul 8, 1997 |
| Priority date | — |
| Expiry date | Sep 6, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67D7/50
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A fuel nozzle has a modular construction wherein valve, venturi and spout modules are mounted in a bore formed in a nozzle body. The main fuel valve is controlled, independently of fuel pressurization, in response to a mechanical signal input, acting through a servo valve. The mechanical signal input is provide by a finger displaced trigger, acting through a pivotal lever arm and latching means that form part of the automatic shut off means for preventing overfill of a fuel tank. The venturi module has a venturi passage for generating a vacuum employed in the automatic shut off mechanism. The venturi module includes a bypass passage that enables sufficient vacuum force to be generated at both high and low flow rates. The spout module comprise an extruded spout (including a venturi vent passage) and a pair of mechanical adapter shells that are mechanical locked onto the spout and mechanically locked to the nozzle body, to secure the several modules in assembled relation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.