US3770029A - Automatic fuel dispensing nozzle - Google Patents

Automatic fuel dispensing nozzle Download PDF

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Publication number
US3770029A
US3770029A US00184998A US3770029DA US3770029A US 3770029 A US3770029 A US 3770029A US 00184998 A US00184998 A US 00184998A US 3770029D A US3770029D A US 3770029DA US 3770029 A US3770029 A US 3770029A
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US
United States
Prior art keywords
nozzle
dispensing nozzle
pin
fuel tank
diaphragm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00184998A
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English (en)
Inventor
E Mayer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Texaco Inc
Original Assignee
Texaco Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Texaco Inc filed Critical Texaco Inc
Application granted granted Critical
Publication of US3770029A publication Critical patent/US3770029A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06—Details or accessories
    • B67D7/42—Filling nozzles
    • B67D7/44—Filling nozzles automatically closing
    • B67D7/46—Filling nozzles automatically closing when liquid in container to be filled reaches a predetermined level
    • B67D7/48—Filling nozzles automatically closing when liquid in container to be filled reaches a predetermined level by making use of air suction through an opening closed by the rising liquid

Definitions

  • the present invention concerns an automatic, flowcontrol fuel dispensing nozzle.
  • nozzle which is responsive to over-pressure in the fuel tank to cut off automatically, thereby to prevent damage to the fuel tank.
  • the lockout plunger is also useful in other nozzle control systems wherein some other movable mechanical structure is'locked ina predetermined position, re-
  • the present invention is' concerned with controlling of such lockout plungers in automatic fuel dispensing nozzles in response, also, to over-pressures in the fuel tank. It thus operates in so-called closed systems, namely the type of system in which the fuel dispensing nozzle is caused to make a tight or sealing engagement with the inlet pipe of the fuel tank.
  • lockout plunger which controls the fuel supply, preferably (as in accordance with the more conventional types) in response to a vacuum signal, such as that which is set up as a result of a surge of fuel about the vent at the tip of the nozzle.
  • a vacuum signal such as that which is set up as a result of a surge of fuel about the vent at the tip of the nozzle.
  • the diaphragm is subjected at all times to the pressure in the fuel tank of the vehicle; likewise being subjected to a potential vacuum creating venturi mechanism which, except when acting asa fill signal, is vented within the tank of the vehicle.
  • FIG. 1 is a side elevation of a dispensing nozzle embodying the present invention, the spout being shown as being in sealing engagement with the inlet pipe of a fuel tank, parts vbeing broken away to show the internal structure.
  • FIG. 2 is a detailed elevational view taken centrally through the central portion of the valve shown in FIG. 1, between the spout and the handle section, showing the essential internal parts thereof.
  • FIG. 3 is an enlarged detail of the upper central portion of the view shown in FIG. 2, but showing the parts in a somewhat different operating position.
  • FIG. 4 is yet a more detailed view, essentially identical with that shown in FIG. 3, but with the parts in another operating position.
  • main valve assembly 10 shown in open position in FIG. 4, has been raised to this position by valve stem 11 and hand lever 12, which, in turn, is mounted on fulcrum 13 of lockout plunger 14. Specifically, therefore, lockout plunger 14 controls main valve assembly 10.
  • a secondary lockout assembly 16 controls a secondary valve 17 which is ordinarily locked positively to the main valve 10.
  • valve 17 acts upon the secondary lockout assembly 16 this instantaneously releases the locking interconnection so that valve 17 is closed (without closing valve 10). This then permits a secondary bleed valve system 18 to go into operation so that poppet valve 19 is ultimately enabled to bleed a small amount of fuel thru valve 10 at a controlled, relatively low topping-off rate of flow.
  • flexible diaphragm 34 to which pin 26 is attached, is normally biased to an intermediate position between upper coil spring 36 and lower coil spring 38, as shown in FIG. 2, so that the operative portion 28 of pin 26 normally resides between the balls 24, holding them radially outwardly in locking position.
  • valve 17 is disconnected from the main valve 10 thus permitting it to close by the action of its downwardly acting valve spring 62 while valve 10 remains open.
  • valve control means actuated by the position of the valve 17 preferably determines the disposition of the control signal.
  • lockout plunger 14 is constructed in the same manner as lockout plunger 16 to unlock in response to a vacuum signal.
  • valve lockout plunger mechanism 14 as shown specifically in FIG. 2, in structural detail corresponds generally to that of the previously mentioned lockout mechanism.
  • the lower surface of diaphragm 66 is subjected at all times to atmospheric pressure by virtue of duct 68.
  • diaphragm 66 The upper surface of diaphragm 66 is subject to the pressure prevailing in chamber 70 thereabove which, as previously mentioned, is subject to the control signal, directed as aforesaid. Again the diaphragm is balanced between upper coil spring 72 and lower coil spring 74.
  • Control pin 76 attached to diaphragm 66, has a relatively large central portion 78 which normally holds retaining balls 80 outwardly within radial recesses which are provided in central lockout plunger 82. This holds the balls against annular frusto conical shoulder 84 in the outer sleeve, locking the parts in position.
  • diaphragm 66 retracts pin 76 upwardly permitting the balls 80 to ride down frusto conical section 86 of control pin, instantaneously unlocking the plunger 82.
  • the present invention accordingly provides a lockout plunger modification adapted to many various adaptations of this mechanical element, permitting it to respond selectively in the same manner to either pressure or vacuum signals.
  • control valve (l0)for said fluid is mounted upon a lockout plunger (16) which is normally locked in operative position by radially acting locking members (24) held in radially outward locking position by a central, axially extending control pin (26), but which is released instantaneously to close said valve by axially retracting said control pin (26) to release said locking members (24) radially inwardly, said pin (26) being attached to a flexible diaphragm (34) subject to a vacuum signal to retract said pin (26) thereby permitting said locking members (24) to unlock said lockout plunger (16),
  • said expanding portion (28) terminating in both axial directions therefrom in constricted portions (40 means (58, 60) for transmitting said vacuum signal to one side of said diaphragm (34) to retract said pin (26) to release said locking members (24) and,
  • An automatic dispensing nozzle as called for in claim 1 wherein said nozzle is adapted to be connected with a vehicle fuel tank in tight or sealing engagement therewith and wherein means is provided for creating said vacuum signal in response to the rise of fluid around the outlet spout of the dispensing nozzle.
  • An automatic dispensing nozzle as called for in claim 1 wherein said nozzle is adapted to be connected with a vehicle fuel tank in tight or sealing engagement therewith and wherein means is provided for creating said vacuum signal in response to the rise of fluid around the outlet spout of the dispensing nozzle, and
  • conduit means is provided in communication with the interior of the vehicle fuel tank to transmit the ambient pressure therein, as said positive pressure signal when the pressure rises above a predetermined value in said vehicle fuel tank.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
US00184998A 1971-09-30 1971-09-30 Automatic fuel dispensing nozzle Expired - Lifetime US3770029A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18499871A 1971-09-30 1971-09-30

Publications (1)

Publication Number Publication Date
US3770029A true US3770029A (en) 1973-11-06

Family

ID=22679132

Family Applications (1)

Application Number Title Priority Date Filing Date
US00184998A Expired - Lifetime US3770029A (en) 1971-09-30 1971-09-30 Automatic fuel dispensing nozzle

Country Status (6)

Country Link
US (1) US3770029A (it)
CA (1) CA987642A (it)
DE (1) DE2248097A1 (it)
FR (1) FR2155471A5 (it)
GB (1) GB1361729A (it)
IT (1) IT968445B (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4046681A (en) * 1975-07-10 1977-09-06 Sala Magnetics, Inc. Multiple matrix assembly and matrix unit for magnetic separator with simplified sealing
US20090281081A1 (en) * 2001-11-21 2009-11-12 Luly Jay R Chemokine receptor antagonists and methods of use therefor

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES208617Y (es) * 1974-12-23 1976-07-16 Gioanni Dispositivo enrollador de foque.
GB2000850B (en) * 1977-06-30 1982-05-26 Dover Corp Automatic shut-off nozzle
GB8712260D0 (en) * 1987-05-23 1987-07-01 Tankgas Eng Ltd Gas control valve

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3586072A (en) * 1969-07-30 1971-06-22 Texaco Inc Automatic dispensing nozzle
US3586069A (en) * 1969-05-02 1971-06-22 Texaco Inc Automatic dispensing nozzle
US3586073A (en) * 1968-10-29 1971-06-22 Texaco Inc Automatic dispensing nozzle
US3651837A (en) * 1970-06-08 1972-03-28 Robert W Murray Tank filling nozzle with automatic shutoff

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3586073A (en) * 1968-10-29 1971-06-22 Texaco Inc Automatic dispensing nozzle
US3586069A (en) * 1969-05-02 1971-06-22 Texaco Inc Automatic dispensing nozzle
US3586072A (en) * 1969-07-30 1971-06-22 Texaco Inc Automatic dispensing nozzle
US3651837A (en) * 1970-06-08 1972-03-28 Robert W Murray Tank filling nozzle with automatic shutoff

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4046681A (en) * 1975-07-10 1977-09-06 Sala Magnetics, Inc. Multiple matrix assembly and matrix unit for magnetic separator with simplified sealing
US20090281081A1 (en) * 2001-11-21 2009-11-12 Luly Jay R Chemokine receptor antagonists and methods of use therefor

Also Published As

Publication number Publication date
GB1361729A (en) 1974-07-30
CA987642A (en) 1976-04-20
FR2155471A5 (it) 1973-05-18
IT968445B (it) 1974-03-20
DE2248097A1 (de) 1973-04-05

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