CA1049983A - Fuel dispensing nozzle with automatic shut-off responsive to vapor pressure - Google Patents
Fuel dispensing nozzle with automatic shut-off responsive to vapor pressureInfo
- Publication number
- CA1049983A CA1049983A CA269,069A CA269069A CA1049983A CA 1049983 A CA1049983 A CA 1049983A CA 269069 A CA269069 A CA 269069A CA 1049983 A CA1049983 A CA 1049983A
- Authority
- CA
- Canada
- Prior art keywords
- valve
- vacuum
- spout
- dispensing nozzle
- tank
- 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
Links
Landscapes
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE:
A fuel dispensing nozzle has a diaphragm responsive to vacuum for shutting off the flow of fuel through the nozzle, the diaphragm chamber normally being vented to atmosphere by a tube extending to the mouth of the spout and closable by fuel in the tank being filled to cause vacuum to actuate the diaphragm and shut off the fuel-flow through the nozzle, and a normally open valve in the vent tube, a piston for closing the vent tube valve in response to vapor pressure in the tank being filled, and conduit means providing vapor communication between the piston and the interior of the tank, whereby to shut off the flow of fuel through the nozzle when predetermined vapor pres-sure occurs in the tank being filled.
A fuel dispensing nozzle has a diaphragm responsive to vacuum for shutting off the flow of fuel through the nozzle, the diaphragm chamber normally being vented to atmosphere by a tube extending to the mouth of the spout and closable by fuel in the tank being filled to cause vacuum to actuate the diaphragm and shut off the fuel-flow through the nozzle, and a normally open valve in the vent tube, a piston for closing the vent tube valve in response to vapor pressure in the tank being filled, and conduit means providing vapor communication between the piston and the interior of the tank, whereby to shut off the flow of fuel through the nozzle when predetermined vapor pres-sure occurs in the tank being filled.
Description
The invention relates to fuel dl~penslng nozzle~
h~ving automatic ~hut-off mean~ re8ponslve to fuel level and vapor pressure in the tank being fllled.
According to the invention there i8 provided a liquid dispen~ing nozzle, a body having an inlet, an outlet and liquld passa~e means therebetween lncluding a main valve con-trolling the flow of liquid from ~aid inlet to said outlet, means resillently bla~ing said main valve closed, a spout : connected to said outlet and adapted for insertion in the inlet opening of a tank, manually actuated means for opening said main valve against said resilient means, Venturi means in ~aid fuel passage means including a vacuum take-off, a vacuum chamber, means connecting said Venturi vacuum take-off ~o said vacuum chamber, means re8ponsive to vacuum w~thin said chamber caused by the flow of liquid through said Venturi means operatively connected to said manually actuated means for re-lea~ing the sa~e and thereby permitting said resilient means to close said mean valve, vent passage means communicating with said vacuum chamber to render 8aid vacuum-respon8ive means inoper-ative when ~aid vent passage is open and having a port insert-ible in the ta~k with said spout, said vent pas8age means including a normally open vent control valve, gas conduit means entirely separate from said vent passage means whereby gas pressure in said gas conduit means is unaffected by fluctuations in vacuum in 8aid vent passage means resulting from variations in the rate of flow of l~quid through said Venturi means and adapted for ~ealed communication with the tank inlet opening, a piston exposed directly to gas pressure conditions in said ~ ~ .
-'. : ' . ~ ~ ' ' ' , ' ' ' ~ 0 49 9 8 3ga~ conduit means and arranged to c 108e said vent control valve when gas pressure within the tank and said conduit means exceeds a predetermined value, whereby when said port is sub-merged or when such predetermined pressure condition~ occur to close said vent control valve and thereby block said vent passage means, said vacuum-responsive m~an~ becomes operative to release said manually-operated means and thereby permit said resilient means to close said main valve.
- In the accompanying drawings:
FIG. 1 is a side elevational view, partially in section, of a nozzle e~bodying the invention.
FIG. 2 is an end view of the pressure-responsive valve unit taken from line 2-2 of FIG. 1.
FIG. 3 is an exploded diametral sectional view of the pre~sure-re8ponsive valve unit taken along line 3-3 of FIG. 2.
FIG. 4 is a top view of the pre~sure-responsive valve unit.
The nozzle includes a body generally inticated at 1 and having an inlet 3 to which a fuel hose is connected, and an outlet S communicating with a spout 7 insertible into a tank T to be filled.
Within body 1, between inlet 3 and outlet 5, is a main valve 9, bia~ed by spring 11 into sealing engagement with its seat 13 a~d thereby preventing passag¢ of fuel from inlet 3 to outlet 5. Valve 9 i8 secured to the upper end of its stem 15 which slides in body 1 and pro~ects downwardly from valve 9 and an operating lever 17, fulcrumed at 19 on a , ..
'.' 104g983 plun~er 21 slidably mounted in body 1, engages the lower end of 8tem lS 80 that upward pressure on lever 17 force8 ~alve 9 upwardly to open posl~ion, permitting the flow of fuel past it.
Below valve seat 13 a dow~wardly facing conical valve seat 23 i8 ~ounted in body 1 and a mating frusto-conical poppet valve 25 is slidably mounted on stem 15 and biased upwardly into engagement with seat 23 by a spring 27 seated on stem gulde sleeve 29.
In order to cau8e main valve 9 to clo~e automatically under.certain conditions a ball latch tevice compri~ng an enlarged chamber 31 i8 fsr~ed in body 1 ad~acent the upper end of plunger 21 defining a peripheral shoulder 33 and the upper end of plunger 21 is formed with a central axial bore 35 inter8ected by a transver8e bore 37 at the 8a~e height a~
~houlder 33. Balls 39 are normally seated in tran~verse bore 37 and pro~ect outwardly therefrom into engagement with shoulder 33 to prevent downward movement of plunger 21. Balls 39 are normally positioned in thi8 l~tching position by the thickened upper end portion of latch pin 41 which extends into bore 35 and bears agai~st the balls. Latch pin 41 i8 secured to a diaphragm 43 unted in a chamber 45 formed by a cap 47 removably.secured to body 1 and a spring 49 seated against cap 47 biases diaphragm 43 and latch pin 41 downwardly into latch-ing engagement with ball~ 39.
For providing vacuum to.chamber 45 to release latch pin 41 a ~hort pas~age 51 extends fro~ diaphragm chamber 45 to an annular groove 53 in body l surrounding poppet val~e ~eat 23 and a radial p~ssageway 55 through the latter connects the neck of seat 23 to annular groove 53.
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. - :. . .. . . . ~ . .
~049983 With the de8cribed arrangement, when lever 17 i8 pressed upwardly to open ~aln valve 9, fulcrum 19 reMalns stationary beceuse b~lls 39 prevent dowmward ~ovement of plunger 21. Pressuriz-d fuel passing valve 9 un~eats poppet val~e 25 and a venturi effect i8 formed between poppet valve 25 and its ~eat 23, creating a vacuum in groove 53, pa~8age 51 and diaphragm chamber 45, whlch tends to rai~e the diaphragm against spring 49, and with it, latch pin 41 ~o that its thinner Lower portion per~lts radlal inward movement of balls 39 clear of shoulders 33, and consequent townward movement of plunger 21 to relea~e lever 17 and per~it valve 8tem 15 and with it valve 9 to lower again3t seat 13 under pressure of spring 11.
; Normally diaphragm chamber 45 i8 vented to atmosphere by a passage 57 in nozzle body 1 which commNnicstes with a vent tube 59 within 8pout 7, terminating in a port 61 near the mouth of the spout 80 that, as long a~ passage 57 and tube 59 are open, the vacuum in chamber 45 will be broken and diaphragm 43 will not release balls 37 ~o permit downward : 20 movement of plunger 21 and consequent automatic closure of . main valve 9.
If, however, the fuel level in tank T covers vent tube port 60, to block admission of air to tube 59, the vacuum in chamber 45 will cause diaphragm 43 to release balls 59 and thereby cause the clo~ure of main valve 9, prevent$ng further flow of fuel through the nozzle. For returning plunger 21 and lever fulcrum 19 to their normal operating positions, a coil spring 56 is seated at its lower end against body 1 and ~ 0 49 9 8 3 engages a downwardly facing ~houlder 58 on plunger 21.
For naking di~phragm 43 responsive to vacuum to shut valve 9 except when the 8pout i8 inserted in a tank to be filled, and al~o when higher than predetermined vapor pressure occur8 in tank T, a self-contained valve unit generally indicated at 61 is interposed betweon nozzle body outlet 5 and ~pout 7. Unit 61 comprises a tubular passageway portion 63 having external threads 64 at one end for securement to body outlet 5 and internal thread8 65 at it8 other end for attach-ment of spout 7.
A radial strut 69 supports a central tubular element 71 in tubular passageway portion 63, for connection, at its opposite ends, to body passage 57 and vent tube 59, 80 as to provide a continuous vent pa~sage from diaphragm chamber 45 to port 60.
At its top unit 61 i8 formed with a hollow circular boss defining a circular chamber 75 normal to the axis of tubular pas~age 63, and a cylindrical bore 77, through a radial strut 69, connects chamber 75 with the hollow interior 20 of tubular element 71. A gate valve 81 i8 slidably unted in bore 77 and is formed with a disc-shaped piston 85 on it8 outer end, slidably received in circular chamber 75. An expanslble retaining ring 87 received in an annular groove 89 in the wall of chamber 75 limits the outward movement of piston 85 and retains it in chamber 75. Near its inner end, . cha~ber 75 is formed with an annular shoulder 91 against which a ~ealing disc 93 of elastomeric material i8 seated, di8c 93 being centrally apertured at 95 to permit the passage there-through of valve 81. A coil spring 97 seated against sealing : 5 ~ 0 49 9 8 3 disc 93 biases piston 85 outwardly to urge valve 81 tow~rd open piston, clear of the pa88age through tubular ele~ent 71, and also maintains ~ealing disc 93 seated agalnst shoulder 91. To eliminate resistance to inward movement of piston 85 resulting from compression of air confined in chamber 75, -: a small vent opening 98 i8 formed in it8 wall 73.
For applying vapor pressure from tank T to pi8ton 85, a generally circular B leeve 99, of substantially greater diameter than ~pout 7, 8urrounds valve unit 61 and the ad~acent portion of spout 7 and is sealingly secured at one end to nozzle outlet 5 and at its other end unts a sealing 't ring 101 of relatively 80ft ela8tomeric material engageable ,;
with the inlet of tank T to effect a seal therewith. Sleeve 99 i8 of bellows configuration, the tendency of the bellows to expand axially biasing ring 101 outwardly into sealing engage-! ment with the inlet of tank T. The central opening 103 in ring 101 is of sufficiently larger diameter than spout 7 to permit the free passage of vapor therethrough from tank T to the region of valve unit 61, but sufficiently ~mall that the . 20 lnner margin of ring lOl eng-ges retaining collar 105 on .: .
~ ~pout 7.
,, When vapor pressure in tank T and ~leeve 99 exceeds a predetermined value, in excess of the pressure exerted by sprine 97 on pi8ton 85, it forces piston 85 and valve 81 inwardlyj causing the latter to block passage 72 through tubular element 71, thereby blocking the vent~g of diaphragm ,. . . .
i chamber 45 and permi~ting vacuum from poppet valve seat 23 to raise diaphragm 43 and latch pi~ 41, releasing plunger 21 and ., .
.,.. . , . - .
.
pressure of lever 17 on n~in valve stem 15, to permit valve ~pring 11 to clo8e main valve 9 and thereby shut off the flow of fuel through the nozzle. As 800n as pressure within sleeve 99 i~ reduced, as by withdraw~l of 8pout 59 from tank T, ~pring 97 urges piston 85 outwardly, to withdraw valve 81 from passage 72, thu~ venting diaphragm cha~ber 45 to at sphere and breaking the vacuum therein to return latch pin 41 to its normal position wherein balls 33 are held in latching engagement with shoulder 33 to retain plunger 21 and lever fuLcrum l9:i~ their normal positlons.
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, , .
h~ving automatic ~hut-off mean~ re8ponslve to fuel level and vapor pressure in the tank being fllled.
According to the invention there i8 provided a liquid dispen~ing nozzle, a body having an inlet, an outlet and liquld passa~e means therebetween lncluding a main valve con-trolling the flow of liquid from ~aid inlet to said outlet, means resillently bla~ing said main valve closed, a spout : connected to said outlet and adapted for insertion in the inlet opening of a tank, manually actuated means for opening said main valve against said resilient means, Venturi means in ~aid fuel passage means including a vacuum take-off, a vacuum chamber, means connecting said Venturi vacuum take-off ~o said vacuum chamber, means re8ponsive to vacuum w~thin said chamber caused by the flow of liquid through said Venturi means operatively connected to said manually actuated means for re-lea~ing the sa~e and thereby permitting said resilient means to close said mean valve, vent passage means communicating with said vacuum chamber to render 8aid vacuum-respon8ive means inoper-ative when ~aid vent passage is open and having a port insert-ible in the ta~k with said spout, said vent pas8age means including a normally open vent control valve, gas conduit means entirely separate from said vent passage means whereby gas pressure in said gas conduit means is unaffected by fluctuations in vacuum in 8aid vent passage means resulting from variations in the rate of flow of l~quid through said Venturi means and adapted for ~ealed communication with the tank inlet opening, a piston exposed directly to gas pressure conditions in said ~ ~ .
-'. : ' . ~ ~ ' ' ' , ' ' ' ~ 0 49 9 8 3ga~ conduit means and arranged to c 108e said vent control valve when gas pressure within the tank and said conduit means exceeds a predetermined value, whereby when said port is sub-merged or when such predetermined pressure condition~ occur to close said vent control valve and thereby block said vent passage means, said vacuum-responsive m~an~ becomes operative to release said manually-operated means and thereby permit said resilient means to close said main valve.
- In the accompanying drawings:
FIG. 1 is a side elevational view, partially in section, of a nozzle e~bodying the invention.
FIG. 2 is an end view of the pressure-responsive valve unit taken from line 2-2 of FIG. 1.
FIG. 3 is an exploded diametral sectional view of the pre~sure-re8ponsive valve unit taken along line 3-3 of FIG. 2.
FIG. 4 is a top view of the pre~sure-responsive valve unit.
The nozzle includes a body generally inticated at 1 and having an inlet 3 to which a fuel hose is connected, and an outlet S communicating with a spout 7 insertible into a tank T to be filled.
Within body 1, between inlet 3 and outlet 5, is a main valve 9, bia~ed by spring 11 into sealing engagement with its seat 13 a~d thereby preventing passag¢ of fuel from inlet 3 to outlet 5. Valve 9 i8 secured to the upper end of its stem 15 which slides in body 1 and pro~ects downwardly from valve 9 and an operating lever 17, fulcrumed at 19 on a , ..
'.' 104g983 plun~er 21 slidably mounted in body 1, engages the lower end of 8tem lS 80 that upward pressure on lever 17 force8 ~alve 9 upwardly to open posl~ion, permitting the flow of fuel past it.
Below valve seat 13 a dow~wardly facing conical valve seat 23 i8 ~ounted in body 1 and a mating frusto-conical poppet valve 25 is slidably mounted on stem 15 and biased upwardly into engagement with seat 23 by a spring 27 seated on stem gulde sleeve 29.
In order to cau8e main valve 9 to clo~e automatically under.certain conditions a ball latch tevice compri~ng an enlarged chamber 31 i8 fsr~ed in body 1 ad~acent the upper end of plunger 21 defining a peripheral shoulder 33 and the upper end of plunger 21 is formed with a central axial bore 35 inter8ected by a transver8e bore 37 at the 8a~e height a~
~houlder 33. Balls 39 are normally seated in tran~verse bore 37 and pro~ect outwardly therefrom into engagement with shoulder 33 to prevent downward movement of plunger 21. Balls 39 are normally positioned in thi8 l~tching position by the thickened upper end portion of latch pin 41 which extends into bore 35 and bears agai~st the balls. Latch pin 41 i8 secured to a diaphragm 43 unted in a chamber 45 formed by a cap 47 removably.secured to body 1 and a spring 49 seated against cap 47 biases diaphragm 43 and latch pin 41 downwardly into latch-ing engagement with ball~ 39.
For providing vacuum to.chamber 45 to release latch pin 41 a ~hort pas~age 51 extends fro~ diaphragm chamber 45 to an annular groove 53 in body l surrounding poppet val~e ~eat 23 and a radial p~ssageway 55 through the latter connects the neck of seat 23 to annular groove 53.
... , . . . . . :
. - :. . .. . . . ~ . .
~049983 With the de8cribed arrangement, when lever 17 i8 pressed upwardly to open ~aln valve 9, fulcrum 19 reMalns stationary beceuse b~lls 39 prevent dowmward ~ovement of plunger 21. Pressuriz-d fuel passing valve 9 un~eats poppet val~e 25 and a venturi effect i8 formed between poppet valve 25 and its ~eat 23, creating a vacuum in groove 53, pa~8age 51 and diaphragm chamber 45, whlch tends to rai~e the diaphragm against spring 49, and with it, latch pin 41 ~o that its thinner Lower portion per~lts radlal inward movement of balls 39 clear of shoulders 33, and consequent townward movement of plunger 21 to relea~e lever 17 and per~it valve 8tem 15 and with it valve 9 to lower again3t seat 13 under pressure of spring 11.
; Normally diaphragm chamber 45 i8 vented to atmosphere by a passage 57 in nozzle body 1 which commNnicstes with a vent tube 59 within 8pout 7, terminating in a port 61 near the mouth of the spout 80 that, as long a~ passage 57 and tube 59 are open, the vacuum in chamber 45 will be broken and diaphragm 43 will not release balls 37 ~o permit downward : 20 movement of plunger 21 and consequent automatic closure of . main valve 9.
If, however, the fuel level in tank T covers vent tube port 60, to block admission of air to tube 59, the vacuum in chamber 45 will cause diaphragm 43 to release balls 59 and thereby cause the clo~ure of main valve 9, prevent$ng further flow of fuel through the nozzle. For returning plunger 21 and lever fulcrum 19 to their normal operating positions, a coil spring 56 is seated at its lower end against body 1 and ~ 0 49 9 8 3 engages a downwardly facing ~houlder 58 on plunger 21.
For naking di~phragm 43 responsive to vacuum to shut valve 9 except when the 8pout i8 inserted in a tank to be filled, and al~o when higher than predetermined vapor pressure occur8 in tank T, a self-contained valve unit generally indicated at 61 is interposed betweon nozzle body outlet 5 and ~pout 7. Unit 61 comprises a tubular passageway portion 63 having external threads 64 at one end for securement to body outlet 5 and internal thread8 65 at it8 other end for attach-ment of spout 7.
A radial strut 69 supports a central tubular element 71 in tubular passageway portion 63, for connection, at its opposite ends, to body passage 57 and vent tube 59, 80 as to provide a continuous vent pa~sage from diaphragm chamber 45 to port 60.
At its top unit 61 i8 formed with a hollow circular boss defining a circular chamber 75 normal to the axis of tubular pas~age 63, and a cylindrical bore 77, through a radial strut 69, connects chamber 75 with the hollow interior 20 of tubular element 71. A gate valve 81 i8 slidably unted in bore 77 and is formed with a disc-shaped piston 85 on it8 outer end, slidably received in circular chamber 75. An expanslble retaining ring 87 received in an annular groove 89 in the wall of chamber 75 limits the outward movement of piston 85 and retains it in chamber 75. Near its inner end, . cha~ber 75 is formed with an annular shoulder 91 against which a ~ealing disc 93 of elastomeric material i8 seated, di8c 93 being centrally apertured at 95 to permit the passage there-through of valve 81. A coil spring 97 seated against sealing : 5 ~ 0 49 9 8 3 disc 93 biases piston 85 outwardly to urge valve 81 tow~rd open piston, clear of the pa88age through tubular ele~ent 71, and also maintains ~ealing disc 93 seated agalnst shoulder 91. To eliminate resistance to inward movement of piston 85 resulting from compression of air confined in chamber 75, -: a small vent opening 98 i8 formed in it8 wall 73.
For applying vapor pressure from tank T to pi8ton 85, a generally circular B leeve 99, of substantially greater diameter than ~pout 7, 8urrounds valve unit 61 and the ad~acent portion of spout 7 and is sealingly secured at one end to nozzle outlet 5 and at its other end unts a sealing 't ring 101 of relatively 80ft ela8tomeric material engageable ,;
with the inlet of tank T to effect a seal therewith. Sleeve 99 i8 of bellows configuration, the tendency of the bellows to expand axially biasing ring 101 outwardly into sealing engage-! ment with the inlet of tank T. The central opening 103 in ring 101 is of sufficiently larger diameter than spout 7 to permit the free passage of vapor therethrough from tank T to the region of valve unit 61, but sufficiently ~mall that the . 20 lnner margin of ring lOl eng-ges retaining collar 105 on .: .
~ ~pout 7.
,, When vapor pressure in tank T and ~leeve 99 exceeds a predetermined value, in excess of the pressure exerted by sprine 97 on pi8ton 85, it forces piston 85 and valve 81 inwardlyj causing the latter to block passage 72 through tubular element 71, thereby blocking the vent~g of diaphragm ,. . . .
i chamber 45 and permi~ting vacuum from poppet valve seat 23 to raise diaphragm 43 and latch pi~ 41, releasing plunger 21 and ., .
.,.. . , . - .
.
pressure of lever 17 on n~in valve stem 15, to permit valve ~pring 11 to clo8e main valve 9 and thereby shut off the flow of fuel through the nozzle. As 800n as pressure within sleeve 99 i~ reduced, as by withdraw~l of 8pout 59 from tank T, ~pring 97 urges piston 85 outwardly, to withdraw valve 81 from passage 72, thu~ venting diaphragm cha~ber 45 to at sphere and breaking the vacuum therein to return latch pin 41 to its normal position wherein balls 33 are held in latching engagement with shoulder 33 to retain plunger 21 and lever fuLcrum l9:i~ their normal positlons.
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Claims (9)
1. In a liquid dispensing nozzle, a body having an inlet, an outlet and liquid passage means therebetween includ-ing a main valve controlling the flow of liquid from said inlet to said outlet, means resiliently biasing said main valve closed, a spout connected to said outlet and adapted for insertion in the inlet opening of a tank, manually actuated means for opening said main valve against said resilient means, Venturi means in said fuel passage means including a vacuum take-off, a vacuum chamber, means connecting said Venturi vacuum take-off to said vacuum chamber, means responsive to vacuum within said chamber caused by the flow of liquid through said Venturi means operatively connected to said manually actuated means for releasing the same and thereby permitting said re-silient means to close said main valve, vent passage means communicating with said vacuum chamber to render said vacuum-responsive means inoperative when said vent passage is open and having a port insertible in the tank with said spout, said vent passage means including a normally open vent control valve, gas conduit means entirely separate from said vent passage means whereby gas pressure in said gas conduit means is unaffected by fluctuations in vacuum in said vent passage means resulting from variations in the rate of flow of liquid through said Venturi means and adapted for sealed communication with the tank inlet opening, a piston exposed directly to gas pressure conditions in said gas conduit means and arranged to close said vent control valve when gas pressure within the tank and said conduit means exceeds a predetermined value, whereby when said port is submerged or when such predetermined pressure condi-tions occur to close said vent control valve and thereby block said vent passage means, said vacuum-responsive means becomes operative to release said manually-operated means and thereby permit said resilient means to close said main valve.
2. In a liquid dispersing nozzle according to claim 1, said vacuum chamber and vacuum-responsive means being located within said body, said vent passage means having a portion within said body and a separate portion within said spout, said normally open valve being located between said vent passage means portions.
3. In a liquid dispensing nozzle according to claim 2, a valve unit containing said normally open valve forming the connection between said body outlet and said spout.
4. In a liquid dispensing nozzle according to claim 3, said valve unit comprising a tubular passage portion aligned with said body outlet and said spout, a central tubular element connected to said vent passage body and spout portions, said normally open valve being slidably mounted in said unit in a direction transverse thereof.
5. In a liquid dispensing nozzle according to claim 4, said valve unit having a chamber normal to the axis of said tubular passage portion and slidably receiving said piston.
6. In a liquid dispensing nozzle according to claim 5, a spring seated in said piston chamber and biasing said piston outwardly to maintain said normally open valve in open condition.
7. In a liquid dispensing nozzle according to claim 6, said conduit means comprising a sleeve surrounding said spout and adapted for sealing engagement with the tank inlet opening.
8. In a liquid dispensing nozzle according to claim 7, said sleeve mounting at its end a ring-shaped member having a resiliently deformable transverse outer face for sealing engagement with the periphery of the tank inlet.
9. In a liquid dispensing nozzle according to claim 8, resilient means urging said ring-shaped member outwardly along said spout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA269,069A CA1049983A (en) | 1977-01-04 | 1977-01-04 | Fuel dispensing nozzle with automatic shut-off responsive to vapor pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA269,069A CA1049983A (en) | 1977-01-04 | 1977-01-04 | Fuel dispensing nozzle with automatic shut-off responsive to vapor pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1049983A true CA1049983A (en) | 1979-03-06 |
Family
ID=4107644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA269,069A Expired CA1049983A (en) | 1977-01-04 | 1977-01-04 | Fuel dispensing nozzle with automatic shut-off responsive to vapor pressure |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1049983A (en) |
-
1977
- 1977-01-04 CA CA269,069A patent/CA1049983A/en not_active Expired
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