Fluent material handling – with receiver or receiver coacting mea – Automatic control of flow cutoff or diversion – Level or overflow responsive
Patent
1995-06-07
1997-04-15
Recla, Henry J.
Fluent material handling, with receiver or receiver coacting mea
Automatic control of flow cutoff or diversion
Level or overflow responsive
141392, B65B 130, B65B 328
Patent
active
056200315
ABSTRACT:
A vacuum assisted, vapor recovery fuel nozzle comprising a nozzle body and a spout mounted thereon. The spout comprises an inner tube and an outer tube. The inner tube and a passage in the body provide a fuel passage. The inner and outer tubes define a vapor return passage in the spout. The inner end of the outer tube is provided with a radial flange, which is clamped, by a breakaway nut, on the nozzle body to mount the spout thereon. The nozzle is provided with an automatic shut off mechanism, which includes a venturi valve for generating a negative pressure. In the absence of an overfill condition, this negative pressure is vented to atmosphere through a vent tube disposed in the vapor return passage. A normally closed vapor return valve, mounted on the nozzle body, is opened in response to the nozzle's flow control valve, so that vapors will be drawn into the entrance of the vapor return passage at the outer end of the spout. The spout is formed by telescoping the inner tube into a ferrule and the ferrule into the outer tube to provide a reenforced outer end for the spout. The nozzle body is compositely formed by a body member, a vapor cap and a housing for a main valve trip mechanism. The coaxial hose is attached to the hand grip of the nozzle at a downward angle. An optional, vestigial shroud is provided to prevent escape of vapors during delivery of fuel.
REFERENCES:
patent: 4351375 (1982-09-01), Polson
patent: 4505308 (1985-03-01), Walker et al.
patent: 5004023 (1991-04-01), Monticup, Jr. et al.
patent: 5273087 (1993-12-01), Koch et al.
Anderson Paul B.
Dalhart Mark D.
Damico David A.
Douglas Steven O.
Dover Corporation
Recla Henry J.
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