EP0557622B1 - Device and method for determining the volumetric efficiency of fuel vapour recovery systems - Google Patents
Device and method for determining the volumetric efficiency of fuel vapour recovery systems Download PDFInfo
- Publication number
- EP0557622B1 EP0557622B1 EP92204111A EP92204111A EP0557622B1 EP 0557622 B1 EP0557622 B1 EP 0557622B1 EP 92204111 A EP92204111 A EP 92204111A EP 92204111 A EP92204111 A EP 92204111A EP 0557622 B1 EP0557622 B1 EP 0557622B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tubular device
- nozzle
- gas
- gas meter
- volumetric efficiency
- 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
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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
- B67D7/04—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants
- B67D7/0476—Vapour recovery systems
- B67D7/0496—Performance test devices therefor
Definitions
- the present invention relates to an apparatus and method for measuring the volumetric efficiency of hydrocarbon vapor recovery systems.
- An ideal recovery system would be one where at any time and at any rate the volumes of gas and liquid transferred would be equal, defining a yield of 100%. In practice, this situation is difficult to achieve given the imperfections of the regulation, possible obstructions and leaks in the pipes and inevitable misadjustments.
- the object of the invention is to provide an apparatus and a method applying to the measurement of the performance of known "assisted" recovery systems where pumps and devices for regulating the gas flow. are inserted into the return chain of the gases, avoiding interfering with them.
- the invention comprises an apparatus intended for measuring the volumetric efficiency of hydrocarbon vapor recovery systems with a gun for delivering fuel, characterized in that the apparatus comprises a gas meter, a tubular device which is slid over the dispensing gun and a pipe connecting the meter and the tubular device in a sealed manner.
- the inventive apparatus is easy to use by placing it directly on a gun of a known assisted recovery system. There is no need to modify existing systems. The equipment and more particularly its gas meter are not exposed to fuel vapors.
- the inventive apparatus as a reference measurement means in the open air, the measurement results are well reproducible, independently of the different fuel types.
- Apparatus according to the invention can be used with all pistols at a service station.
- the apparatus is relatively manoeuvrable and compact. It can be used by service station personnel.
- the apparatus can be easily calibrated by official institutions in the same way as domestic or industrial gas meters.
- FIG. 1 In an assisted recovery system well known to service stations, as shown diagrammatically in FIG. 1, there is a storage 1 of liquid hydrocarbon in a tank 2 and a suction pump 3.
- This pump 3 pressurizes the liquid 4 through a flexible channel 5 to a distributor gun 6 which contains openings 7 through which the volume of air, containing fuel vapor, and expelled from the tank by filling the vehicle tank.
- Another pump 8 with its regulating device is used for suction of the gas and for driving it through a channel 9 towards the tank 2 where it accumulates in its upper part 10 and replaces the volume of hydrocarbon distributed, this is avoided thus an air inlet through the safety vent.
- the invention provides that a tubular device 11 is placed in front of the vents 7 for vapor recovery.
- This tubular device 11 is provided with an opening 12 through which the tubular end 13 of the gun 6 can be slid, sealing, until an edge 14 of the opposite face of the tubular device 11 comes to bear on an edge 15 of a handle of the gun 6 while also making it watertight. It is recommended to provide edge 14 with one or more gaskets.
- a lateral tubular inlet 16 opening into the interior of the tubular device 11 allows a connection of a preferably flexible tube 17 connected to an outlet 18 of the gas meter 19.
- FIG. 3 illustrates another embodiment of the invention.
- this embodiment consists of the same elements as the embodiment described in Figure 2 and operates in a similar manner.
- the tubular device is not formed in one piece as shown in Figure 2 but consists of a tubular part 11a and two collars 11b and 11c provided with central openings.
- the collars 11b, 11c are attached to the tubular part 11a in a removable manner, preferably screwed.
- each collar 11b or 11c and the tubular part 11a there are two sealing washers 23a and 23b made of elastic material, preferably rubber.
- the washers 23a and 23b are supported by the collars 11b and 11c and are also provided with central openings.
- the internal diameters of the central openings of the washers 23a and 23b are naturally slightly smaller than the (external) diameters of the dispensing gun 6. This ensures that if the tubular device (11a, b, c and 23 a, b) is slid over the gun 6 said device remains well fixed and waterproof on gun 6.
- All the elements (11a, b, c and 23a, b) of the tubular device are well known as standard plumbing articles, for example.
- the end 13 of the gun 6 is then free to perform a test by flow of fuel to a gauge for example or any other container (not shown here).
- a gauge for example or any other container (not shown here).
- the performance is checked by comparing the volume of air measured by the gas meter 19 and whose value is deduced from the indications given on a display device 21 of the gas meter 19 and the volume of liquid delivered, determined by example by the content of the gauge.
- the tubular device 11 is slid through its opening 12 on the cylindrical end 13 of the gun 6 while sealing therein, while being pressed simultaneously on a seal 14, on the edge of a bellows 22.
- the gas sucked in through the vents 7 passes entirely through the tubular inlet 16 to which the gas meter 19 intended for the measurement is connected.
- tubular device 11 As shown and shown in FIG. 4, it is recommended to use a sealed connection device 24 in order to hold the tubular device 11 on the end 13 of the gun 6.
- Such devices 24 are well known and may include a terminal and a locking lever for example.
Abstract
Description
La présente invention concerne un appareillage et procédé destiné à la mesure du rendement volumétrique des systèmes de récupération de vapeurs d'hydrocarbures.The present invention relates to an apparatus and method for measuring the volumetric efficiency of hydrocarbon vapor recovery systems.
On sait que pendant le remplissage des réservoirs des véhicules automobiles avec un carburant liquide délivré d'une citerne, ledit carburant chasse vers l'atmosphère libre un volume équivalent de gaz polluant. On connait des systèmes récupérateurs de vapeurs qui ont précisément pour rôle de refouler ceux-ci vers la citerne d'où provient le liquide fourni.It is known that during the filling of motor vehicle tanks with liquid fuel delivered from a tank, said fuel drives an equivalent volume of polluting gas to the free atmosphere. There are known vapor recovery systems which precisely have the role of pumping them towards the tank from which the liquid supplied comes.
Il existe différentes méthodes connues pour récupérer ces gaz constitués par un mélange d'air et d'hydrocarbures gazeux, mais toutes font appel à des pistolets de distribution spéciaux. Ces pistolets contiennent une ouverture par laquelle on force les gaz à entrer pour les conduire par différence de pression dans un canal qui aboutit dans la citerne de stockage des hydrocarbures liquides, voir par exemple DE-A-2 237 937.There are various known methods for recovering these gases consisting of a mixture of air and gaseous hydrocarbons, but all of them use special dispensing guns. These guns contain an opening through which the gases are forced to enter in order to conduct them by pressure difference in a channel which terminates in the tank for storing liquid hydrocarbons, see for example DE-A-2 237 937.
Un système idéal de récupération serait celui où à tout moment et à tout débit les volumes de gaz et de liquide transférés seraient égaux, définissant un rendement de 100 %.
En pratique, cette situation est difficile à réaliser compte-tenu des imperfections de la régulation, des obstructions et fuites éventuelles dans les canalisations et des déréglages inévitables.An ideal recovery system would be one where at any time and at any rate the volumes of gas and liquid transferred would be equal, defining a yield of 100%.
In practice, this situation is difficult to achieve given the imperfections of the regulation, possible obstructions and leaks in the pipes and inevitable misadjustments.
Les législations en vigueur dans différents pays imposent des rendements définis comme le rapport volume gaz récupéré par rapport au volume liquide fourni compris entre certaines limites. Un manque de récupération de gaz conduit à un résidu de pollution tandis qu'un excès d'aspiration introduit un excès d'air dans la citerne et un risque d'explosion.The laws in force in different countries require yields defined as the ratio of gas volume recovered to the volume of liquid supplied between certain limits. A lack of gas recovery leads to a pollution residue while an excess of suction introduces an excess of air into the tank and a risk of explosion.
Pour garantir un fonctionnement correct des distributeurs, selon les règlements officiels, un contrôle officiel périodique, souvent annuel est imposé.To guarantee correct operation of the distributors, according to official regulations, a periodic, often annual, official control is required.
Jusqu'à aujourd'hui il n'y a pas encore un appareillage ou un système de contrôle d'un tel volume de vapeur récupéré pendant la distribution de carburant.Until today there is not yet an apparatus or a system for controlling such a volume of vapor recovered during fuel distribution.
Il est connu, dans d'autres sphères techniques, que l'on contrôle des volumes de gaz ou des volumes gazeux avec un compteur de gaz (du type domestique par exemple). On pourrait donc probablement insérer un compteur de gaz dans une canalisation de retour du gaz à la citerne avant ou après la pompe d'assistance afin de comparer les volumes de vapeurs écoulés aux volumes de carburant liquide fourni.It is known, in other technical spheres, that gas volumes or gas volumes are checked with a gas meter (of the domestic type for example). It would therefore probably be possible to insert a gas meter in a gas return line to the tank before or after the assistance pump in order to compare the volumes of vapors flowed with the volumes of liquid fuel supplied.
Mais une telle installation d'un compteur de gaz dans les systèmes existants exige d'importants efforts de travail, soit la mise hors service temporaire de l'installation ce qui conduit à des coûts élevés. Souvent, les canalisations de retour sont enterrées ou inaccessibles.However, such an installation of a gas meter in existing systems requires significant work efforts, ie the temporary decommissioning of the installation, which leads to high costs. Often the return lines are buried or inaccessible.
En outre, il y aura des problèmes pratiques qui s'opposeront à l'installation d'un tel compteur de gaz afin de mesurer le volume récupéré de gaz de carburant :
- Condensats encore présents dans la canalisation qui pourraient détériorer voire bloquer les soufflets du compteur ;
- Quasi impossibilité de calibrer aisément périodiquement un compteur installé en permanence dans la canalisation ;
- Nécessité de tenir compte pour le calcul du rendement des différences entre la pression dans le compteur et la pression atmosphérique.
- Condensates still present in the pipeline which could deteriorate or even block the bellows of the counter;
- Almost impossible to easily periodically calibrate a meter permanently installed in the pipeline;
- Need to take into account for the calculation of the yield the differences between the pressure in the meter and the atmospheric pressure.
Pour remédier à tous ces problèmes énoncés, l'objet de l'invention est de fournir un appareillage et un procédé s'appliquant à la mesure du rendement des systèmes connus de récupération dits "assistés" où des pompes et dispositifs de régulation du débit gazeux sont insérés dans la chaîne de retour des gaz en évitant d'interférer sur ceux-ci.To remedy all these stated problems, the object of the invention is to provide an apparatus and a method applying to the measurement of the performance of known "assisted" recovery systems where pumps and devices for regulating the gas flow. are inserted into the return chain of the gases, avoiding interfering with them.
Pour atteindre ce but l'invention comporte un appareillage destiné à la mesure du rendement volumétrique des systèmes de récupération de vapeurs d'hydrocarbures avec un pistolet pour délivrer le carburant, caractérisé en ce que l'appareillage comporte un compteur de gaz, un dispositif tubulaire lequel est glissé sur le pistolet distributeur et une canalisation raccordant le compteur et le dispositif tubulaire de façon étanche.To achieve this object, the invention comprises an apparatus intended for measuring the volumetric efficiency of hydrocarbon vapor recovery systems with a gun for delivering fuel, characterized in that the apparatus comprises a gas meter, a tubular device which is slid over the dispensing gun and a pipe connecting the meter and the tubular device in a sealed manner.
Il y a un avantage évident : l'appareillage inventif est utilisable facilement en le plaçant directement sur un pistolet d'un système connu de récupération assisté. Ce n'est pas nécessaire de modifier les systèmes existants. L'appareillage et plus particulièremenet son compteur de gaz ne sont pas exposés aux vapeurs de carburant. En utilisant l'appareillage inventif comme un moyen de mesure de référence avec l'air libre, les résultats des mesures sont bien reproductibles, indépendamment des types de carburants différents. Un appareillage selon l'invention peut être utilisé avec tous les pistolets d'une station-service. En outre, l'appareillage est relativement maniable et peu encombrant. Il peut être utilisé par le personnel de la station-service.There is an obvious advantage: the inventive apparatus is easy to use by placing it directly on a gun of a known assisted recovery system. There is no need to modify existing systems. The equipment and more particularly its gas meter are not exposed to fuel vapors. By using the inventive apparatus as a reference measurement means in the open air, the measurement results are well reproducible, independently of the different fuel types. Apparatus according to the invention can be used with all pistols at a service station. In addition, the apparatus is relatively manoeuvrable and compact. It can be used by service station personnel.
Pour assurer une précision désirée de mesure, l'appareillage peut-être calibré facilement par des institutions officielles de la même façon que des compteurs à gaz domestiques ou industriels.To ensure the desired accuracy of measurement, the apparatus can be easily calibrated by official institutions in the same way as domestic or industrial gas meters.
D'autres caractéristiques de l'invention apparaîtront plus clairement à la description qui suit. La description explique plusieurs modes de réalisation de l'invention à titre d'exemples non limitatifs.Other characteristics of the invention will appear more clearly in the description which follows. The description explains several embodiments of the invention by way of non-limiting examples.
Un procédé de mesure du rendement volumétrique des systèmes de récupération de vapeurs d'hydrocarbures appliqué en utilisant un appareillage inventif (déjà décrit ci-dessus) et ses avantages apparaissant dans la description qui suit.A method for measuring the volumetric efficiency of hydrocarbon vapor recovery systems applied using an inventive apparatus (already described above) and its advantages appearing in the description which follows.
La description se réfère aux figures annexées sur lesquelles :
- la figure 1 est une vue schématique d'un système de récupération assistée ;
- la figure 2 est une vue schématique d'un premier mode de réalisation d'un appareillage inventif, partiellement en coupe ;
- la figure 3 est une vue schématique d'un second mode de réalisation et
- la figure 4 est une vue schématique d'un troisième mode de réalisation.
- Figure 1 is a schematic view of an enhanced recovery system;
- Figure 2 is a schematic view of a first embodiment of an inventive apparatus, partially in section;
- FIG. 3 is a schematic view of a second embodiment and
- Figure 4 is a schematic view of a third embodiment.
Dans un système de récupération assisté et bien connu des stations-service, comme montré schématiquement dans la fig. 1, on distingue un stockage 1 d'hydrocarbure liquide dans une citerne 2 et une pompe aspirante 3. Cette pompe 3 refoule sous pression le liquide 4 par un canal flexible 5 vers un pistolet distributeur 6 lequel contient des ouïes 7 par lesquelles est aspiré le volume d'air, contenant de la vapeur de carburant, et chassé du réservoir par le remplissage du réservoir du véhicule. Une autre pompe 8 avec son dispositif de régulation sert à l'aspiration du gaz et à le conduire par un canal 9 vers la citerne 2 où il s'accumule dans sa partie supérieure 10 et vient remplacer le volume d'hydrocarbure distribué, on évite ainsi une entrée d'air par l'évent de sécurité.In an assisted recovery system well known to service stations, as shown diagrammatically in FIG. 1, there is a storage 1 of liquid hydrocarbon in a
C'est le mérite des inventeurs d'avoir reconnu qu'il est donc particulièrement possible de pouvoir placer le compteur de gaz devant les ouïes d'aspiration du pistolet et d'effectuer un test à l'air libre, le système n'aspirant alors à travers le compteur que de l'air pur à la pression atmosphérique.It is the merit of the inventors to have recognized that it is therefore particularly possible to be able to place the gas meter in front of the suction ports of the gun and to carry out a test in the open air, the system not aspirating then through the meter only pure air at atmospheric pressure.
Comme le montre la figure 2, l'invention prévoit qu'un dispositif tubulaire 11 soit mis en place devant les ouïes 7 de récupération de vapeur. Ce dispositif tubulaire 11 est muni d'une ouverture 12 par laquelle peut être glissée l'extrémité tubulaire 13 du pistolet 6 en faisant étanchéité, jusqu'à ce qu'un bord 14 de la face opposée du dispositif tubulaire 11 vienne s'appuyer sur un bord 15 d'une poignée du pistolet 6 en y faisant également étancheité. Il est recommandé de munir le bord 14 avec un ou plusieurs joints d'étanchéité.
Une entrée tubulaire latérale 16 débouchant à l'intérieur du dispositif tubulaire 11 permet une connexion d'un tube de préférence flexible 17 relié à une sortie 18 du compteur de gaz 19.As shown in Figure 2, the invention provides that a
A lateral
La figure 3 illustre un autre mode de réalisation de l'invention. En principe, ce mode de réalisation est constitué des mêmes éléments que le mode de réalisation décrit dans la figure 2 et fonctionne d'une manière similaire.
Selon la figure 3, le dispositif tubulaire n'est pas formé d'une seule pièce comme indiqué dans la figure 2 mais est constitué d'une partie tubulaire 11a et de deux colliers 11b et 11c munis d'ouvertures centrales.FIG. 3 illustrates another embodiment of the invention. In principle, this embodiment consists of the same elements as the embodiment described in Figure 2 and operates in a similar manner.
According to Figure 3, the tubular device is not formed in one piece as shown in Figure 2 but consists of a tubular part 11a and two
Les colliers 11 b, 11c sont attachés à la partie tubulaire 11a d'une manière démontable, préférablement vissés.The
Entre chaque collier 11b ou 11c et la partie tubulaire 11a, se trouvent deux rondelles d'étanchéité 23a et 23b en matériau élastique, préférablement de caoutchouc.Between each
Les rondelles 23a et 23b sont supportées par les colliers 11b et 11c et sont également munis des ouvertures centrales.The
Les diamètres internes des ouvertures centrales des rondelles 23a et 23b sont naturellement légèrement plus petits que les diamètres (externes) du pistolet distributeur 6. Ceci garantit que si le dispositif tubulaire (11a, b, c et 23 a,b) est glissé sur le pistolet 6 ledit dispositif reste bien fixé et étanche sur le pistolet 6.The internal diameters of the central openings of the
Tous les éléments (11a, b, c et 23a, b) du dispositif tubulaire sont bien connus comme articles standards de la plomberie, par exemple.All the elements (11a, b, c and 23a, b) of the tubular device are well known as standard plumbing articles, for example.
En appliquant les modes énoncés de réalisation de l'invention, l'extrémité 13 du pistolet 6 est alors libre pour effectuer un test par écoulement de carburant vers une jauge par exemple ou tout autre récipient (non représenté ici). L'air aspiré s'écoulant par une entrée 20 du compteur 19 à travers le compteur de gaz 19, le tube flexible 17, le dispositif tubulaire 11 vers les ouïes 7 du pistolet 6.By applying the embodiments of the invention, the
Le contrôle du rendement se fait en comparant le volume d'air mesuré par le compteur de gaz 19 et dont la valeur est déduite des indications portées sur un dispositif d'affichage 21 du compteur de gaz 19 et le volume de liquide délivré, déterminé par exemple par le contenu de la jauge.The performance is checked by comparing the volume of air measured by the
Il n'y a pas lieu de faire de correction manométrique du volume d'air mesuré.There is no need to make a manometric correction of the measured air volume.
Bien entendu, la présence d'un soufflet, comme aux Etats-Unis par exemple, sur un pistolet à récupération assistée n'empêche nullement l'emploi de l'appareillage selon l'invention. Sur la fig. 4, le dispositif tubulaire 11 est glissé par son ouverture 12 sur l'extrémité cylindrique 13 du pistolet 6 en y faisant étanchéité, tout en étant appuyé simultanément sur un joint d'étanchéité 14, sur le bord d'un soufflet 22. Le gaz aspiré par les ouïes 7 passe entièrement par l'entrée tubulaire 16 sur lequel est connecté le compteur de gaz 19 destiné à la mesure.Of course, the presence of a bellows, as in the United States for example, on an assisted recovery pistol in no way prevents the use of the apparatus according to the invention. In fig. 4, the
Concernant le dispositif tubulaire 11 selon l'invention, représenté et montré sur la figure 4, il est recommandé d'utiliser un dispositif de raccordement étanche 24 afin de maintenir le dispositif tubulaire 11 sur l'extrémité 13 du pistolet 6.Regarding the
Les tels dispositifs 24 sont bien connus et peuvent comporter une borne et un levier de blocage par exemple.
On voit qu'ainsi, grâce à l'invention, on obtient un système de contrôle du volume de vapeur récupéré pendant la distribution de carburant.
L'appareillage inventif est particulièrement approprié à être utilisé pour de telles mesures de contrôle périodiques par des institutions officielles.It can be seen that, thanks to the invention, a system for controlling the volume of vapor recovered during the distribution of fuel is obtained.
The inventive apparatus is particularly suitable to be used for such periodic control measures by official institutions.
Claims (7)
- Apparatus for measuring the volumetric efficiency of hydrocarbon vapor recovery systems associated with a nozzle for delivering fuel, the apparatus being characterized in that it includes a gas meter (19), a tubular device (11) for sliding onto the delivery nozzle (6), and a duct (17) connecting the meter (19) to the tubular device (16) in airtight manner.
- Apparatus according to claim 1, characterized in that the gas meter (19) is of the domestic type.
- Apparatus according to claim 1, characterized in that the gas meter (19) is of the industrial type.
- Apparatus according to any one of claims 1 to 3, characterized in that the tubular device (11) is provided with sealed coupling means (23) for holding it on the delivery nozzle (6).
- Apparatus according to any one of claims 1 to 3, characterized it that the openings (12, 14) in the tubular device (11) through which the nozzle (6) is slid are provided with sealing means of shapes that match the outlines of the end (13) of the nozzle (6) and of an edge (15) of a handle of the nozzle (6), thereby ensuring a fixed position for the tubular device.
- Apparatus according to any one of claims 1 to 3, characterized in that the tubular device (11) comprises a tubular portion (11a) and two collars (11b and 11c), together with two resilient washers (23a, 23b) which are slid over the nozzle (6) in order to guarantee a fixed and airtight position for the tubular device.
- A method of measuring the volumetric efficiency of hydrocarbon vapor recovery systems, the method being characterized in that it is applied by using the apparatus according to any preceding claim and in that the volume of gas is measured using atmospheric air as a reference means.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR921024 | 1992-01-30 | ||
| FR9201024A FR2686974B1 (en) | 1992-01-30 | 1992-01-30 | APPARATUS AND METHOD FOR MEASURING THE VOLUMETRIC EFFICIENCY OF HYDROCARBON VAPOR RECOVERY SYSTEMS. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0557622A1 EP0557622A1 (en) | 1993-09-01 |
| EP0557622B1 true EP0557622B1 (en) | 1995-09-27 |
Family
ID=9426160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92204111A Expired - Lifetime EP0557622B1 (en) | 1992-01-30 | 1992-12-29 | Device and method for determining the volumetric efficiency of fuel vapour recovery systems |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5437183A (en) |
| EP (1) | EP0557622B1 (en) |
| AT (1) | ATE128437T1 (en) |
| DE (1) | DE69205151T2 (en) |
| DK (1) | DK0557622T3 (en) |
| FR (1) | FR2686974B1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6151955A (en) * | 1998-08-07 | 2000-11-28 | Dresser Equipment Group, Inc. | Device and method for testing a vapor recovery system |
| DE10028542A1 (en) * | 1998-12-29 | 2001-12-13 | Fritz Curtius | Diagnostic system for gas feed in fuel supply in fuel station for vehicles |
| US6948536B1 (en) * | 2002-12-27 | 2005-09-27 | Hirt Combustion Engineers, Inc. | System for detecting liquid fuel blockages in the vapor return line of a fuel dispenser |
| US7159625B1 (en) * | 2005-05-25 | 2007-01-09 | David Klutts | Device for verifying amount of dispensed gasoline and method of use |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3122158A (en) * | 1961-03-10 | 1964-02-25 | Grunsky Charies | Gas meter changing device |
| DE2237937A1 (en) * | 1972-08-02 | 1974-02-07 | Kurt Lab | METHOD AND DEVICE FOR AVOIDING GASOLINE VAPOR COLLECTIONS AT FUELING STATIONS |
| US4018252A (en) * | 1973-10-26 | 1977-04-19 | Burtis Wilson A | Anti-pollution nozzle assembly |
| US4138880A (en) * | 1977-05-27 | 1979-02-13 | The United States Of America As Represented By The Administrator Of The U.S. Environmental Protection Agency | Vapor emission recovery and measuring method and vapor recovery collection boot |
| FR2653893B1 (en) * | 1989-10-26 | 1992-05-22 | Fieau Jean Claude | DEVICE FOR TESTING A BUS WITH TWO PAIRS OF CONDUCTORS. |
| US5121777A (en) * | 1989-11-01 | 1992-06-16 | Dover Corporation | Vapor recovery nozzles and sub-assemblies therefor |
| US5273087A (en) * | 1989-12-19 | 1993-12-28 | Amoco Corporation | Vapor recovery nozzle with flow indicators |
| US5040577A (en) * | 1990-05-21 | 1991-08-20 | Gilbarco Inc. | Vapor recovery system for fuel dispenser |
| US5156199A (en) * | 1990-12-11 | 1992-10-20 | Gilbarco, Inc. | Control system for temperature compensated vapor recovery in gasoline dispenser |
| DE4131976A1 (en) * | 1991-09-25 | 1993-04-01 | Ross Europa Gmbh | ARRANGEMENT FOR RECYCLING HYDROCARBONS IN FUEL REFUELING SYSTEMS |
-
1992
- 1992-01-30 FR FR9201024A patent/FR2686974B1/en not_active Expired - Fee Related
- 1992-12-29 DK DK92204111.6T patent/DK0557622T3/en active
- 1992-12-29 AT AT92204111T patent/ATE128437T1/en active
- 1992-12-29 EP EP92204111A patent/EP0557622B1/en not_active Expired - Lifetime
- 1992-12-29 DE DE69205151T patent/DE69205151T2/en not_active Expired - Lifetime
-
1993
- 1993-01-28 US US08/010,668 patent/US5437183A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0557622A1 (en) | 1993-09-01 |
| DE69205151D1 (en) | 1995-11-02 |
| US5437183A (en) | 1995-08-01 |
| FR2686974B1 (en) | 1994-03-25 |
| ATE128437T1 (en) | 1995-10-15 |
| FR2686974A1 (en) | 1993-08-06 |
| DE69205151T2 (en) | 1996-03-21 |
| DK0557622T3 (en) | 1995-12-04 |
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