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US 5,307,848 AGranted
Non-aerating tank filling nozzle with automatic shutoff
OwnerRobert W. Murrayinventor
Life of this patent
Estimating the term…
Abstract
A non-aerating fluid dispensing nozzle for dispensing fluid into a receiving tank has a vapor control and containment mechanism for vapors formed in the receiving tank. The mechanism has a chamber disposed within the housing of the nozzle and a gas passage that has a first end connected to the chamber and a second end connected to an intake aperture disposed near the distal end of the discharge nozzle. A pump is disposed in fluid flow communication with the chamber for pumping gases from the fluid receiving tank into the chamber through the gas passage during fluid flow through the nozzle.
Claims22
A non-aerating fluid dispensing nozzle comprising:
- a discharge nozzle having a proximal end and a distal end, said distal end of said nozzle insertable into a tank receiving a fluid;
- a valve housing having an inlet passage and a flow control passage, said inlet passage connected by said flow control passage with said proximal end of said nozzle;
- a main valve operative to control the flow of fluid through said flow control passage;
- a main operating lever operatively associated with said main valve and shiftable between valve opening and closing positions to thereby open and close said flow control passage;
- means for controlling and containing vapors formed in the receiving tank comprising;
- a chamber disposed within said housing;
- a gas passage means having an end connected to said chamber and having a second end connected to an intake aperture disposed near said distal end of said discharge nozzle;
- and
- pumping means in fluid flow communication with said chamber for pumping gases from the fluid receiving tank into said chamber through said gas passage means during fluid flow through said nozzle, wherein said pumping means comprises:
- impeller means for rotation in response to a flow of fluid through said non-aerating fluid dispensing nozzle, said impeller means disposed within said housing in the path of fluid flow;
- piston means for reciprocal movement in response to rotation of said impeller means, said piston means extending into said chamber;
- linkage means for connecting said piston means to said impeller means, whereby the reciprocal movement of said piston means pumps gases between the tank and the chamber through said gas passage means as fluid is dispensed through the nozzle.
9 more elements
A vapor controlling fluid dispensing system comprising:
- a dispenser for dispensing a fluid;
- a non-aerating, fluid dispensing nozzle connected to said dispenser by a fluid flow path, said fluid dispensing nozzle comprising:
- a discharge nozzle having a proximal end and a distal end, said distal end of said nozzle insertable into a tank receiving a fluid;
- a valve housing having an inlet passage connected by a flow control passage with said proximal end of said nozzle;
- a main valve operative to control the flow of fluid through said flow control passage;
- a main operating lever operatively associated with said main valve and shiftable between valve opening and closing positions to thereby open and close said flow control passage;
- and
- vapor control means comprising:
- a chamber disposed within said housing;
- a gas passage means having an end connected to said chamber and having a second end connected to an intake aperture in said discharge nozzle;
- and
- means for pumping gases from the tank receiving fluid into said chamber through said gas passage means during fluid flow through the nozzle, said means for pumping disposed externally of said fluid dispensing nozzle and connected to said chamber in fluid flow communication therewith by a second gas passage means, wherein said means for pumping gases comprises an electrically driven reciprocal piston disposed within a pump housing connected to the second gas passage means.
9 more elements
A vapor controlling fluid dispensing system comprising:
- a dispenser for dispensing a fluid;
- a non-aerating, fluid dispensing nozzle connected to said dispenser by a fluid flow path, said fluid dispensing nozzle comprising:
- a discharge nozzle having a proximal end and a distal end, said distal end of said nozzle insertable into a tank receiving a fluid;
- a valve housing having an inlet passage connected by a flow control passage with said proximal end of said nozzle;
- a main valve operative to control the flow of fluid through said flow control passage;
- a main operating lever operatively associated with said main valve and shiftable between valve opening and closing positions to thereby open and close said flow control passage;
- and
- vapor control means comprising:
- a chamber disposed within said housing;
- a gas passage means having an end connected to said chamber and having a second end connected to an intake aperture in said discharge nozzle;
- and
- means for pumping gases from the tank receiving fluid into said chamber through said gas passage means during fluid flow through the nozzle, said means for pumping disposed externally of said fluid dispensing nozzle and connected to said chamber in fluid flow communication therewith by a second gas passage means, wherein said means for pumping gases comprises:
- a pump housing, said flow path passing through said pump housing, said pump housing including therein:
- impeller means for rotation in response to a flow of fluid through said non-aerating fluid dispensing nozzle, said impeller means disposed within said fluid flow path;
- piston means for reciprocal movement in response to rotation of said impeller means;
- and
- linkage means for connecting said piston means to said impeller means;
- wherein said reciprocal movement of said piston means pumps gases out of said tank and into said chamber.
15 more elements
Dependencies are inferred from the claim text.