DE2209741A1 - COIN ACTUATED TAP DEVICE FOR LIQUIDS - Google Patents

Description

P 739

Dip; - ··; ■; \ * ;: _Λ ■■

"■ .V - ,,:.-.- / .. raSe 65

Pan-Nova, Inc., Santa Fe Springs / California (V.St.v.A.)

Mint-operated dispensing device for liquids

The invention relates to vending machines for liquids, for example in .Form of fuel pumps at gas stations. The invention can of course also be used for the dispensing of other liquids on other occasions. The device according to the invention is operated by the customer without requiring the assistance of the petrol station staff, whereby the device is actuated by inserting coins, which gives out the exact change if the requested fuel is not dispensed in full ₅ and with a choice more than one type of fuel can be drawn from the customer.

A typical üenzinzapfsäule includes a pump and pump operations ainen container, a hose with a nozzle, which is inserted ε in the tank of motor vehicles _r. a flow regulator on the nozzle and one or more manually operated levers for switching the Fi.ua.po "" aid sum on and off

209886/0711

Return the facility to its original state. It will the liquid flow through the dispensing line is measured »the volume of the dispensed material is calculated and displayed displayed, and also the calculated price of the material sold and the price of the material per quantity » unit.

In the specialist literature, various facilities have been found for Drawing off gasoline and other fuels have been described, and some of these facilities have also been put into operation. The older devices were mechanical devices, while for some time electromechanical devices of this type can be used. The dispensing device according to the invention represents an electronic digital system and more than just an electrical equivalent of known devices with new features, new results and new combinations of components and elements

In the dispensing system according to the invention, the conventional pumps, flow meters, valves and nozzles can be used for handling the liquids to be dispensed are used as well as the conventional facilities for taking and dispensing coins, a new and better device for calculating and checking is also provided. An important feature of the invention is in the handling of two types of material to be dispensed with a single exercise device and with a single dispensing nozzle, with the customer having a single Dispenser used and the desired type of fuel can choose even after inserting coins. To select the type of fuel, the customer operates a specific one Push button, and the facility displays the price per unit of measure (e.g. cents per gallon), sets the system to dispense of the desired fuel type in operation and calculates the total price for the material issued. Another feature of the invention is the registration of the deposited (suffering and in the registration of the sales price of the fuel issued, the register for the latter Process has a number of levels corresponding to the different monetary units (e.g. pennies, nickels, quarters and

, '09006/0711

Dollars), whereby a coincidence in the registers causes a blocking, and with the repayment of the surplus amount, the steps are continued until a coincidence is reached.The dispensing system has devices that convert the individual coin values without difficulty, so that the system different coin values and types of money from other countries. The still to be described embodiment of the invention is operated with tokens that represent a value of one dollar and possibly also five dollars, the change being given in normal coins * The inventive system can of course also be set up for operation with other coins and tokens and the term coins is intended to encompass any type of item that represents a monetary value.

üin the conventional devices of this type are the Valves, the measuring instruments, the calculation device and the display means as well as the dispensing nozzle are all arranged in one place, so that a rather large pump housing unit must be provided as it is familiar to every driver is. In contrast, the individual components of the system according to the invention can be separated from each other and on one desired location. The coin handling mechanism and the display means can be located near the dispensing nozzle or located away from it. The accounting and Control devices require a few electrical connections with the rest of the plant and can be arranged at any suitable place «, The plant is also with a remote recorder of total sales and total and with remote Devices for setting the price per unit of quantity of the fuel types at one or more filling points at the same time equipped so that several tapping points can be operated from a central unit.

The invention will now be described in detail. In the accompanying drawings is the

1 shows an overview of a currently preferred embodiment a liquid dispensing system according to the invention,

.., '09880/071 1

2 shows a circuit diagram for the electrical device for selection and dispensing of various types of fuel,

Fig.3a, 3b taken together a circuit diagram for the control and Unit of resolution according to the ü'igei,

4 shows an overview of another embodiment of the liquid flow arrangement after Pig.1 and the

5 shows an illustration of another embodiment of the display device according to Fig.1.

The liquid dispensing system shown in the Pigd has two identical display fields 10, each with a display decoding unit 11 on. The system is also equipped with a control panel 12, a fuel type control unit 13 » a computer 14 with a control and resolution unit 15 and equipped with a coin handler 16.

A fuel type 1 is fed to the dispensing nozzle 20 from a reservoir through a line 21, a pump P1, a flow meter FM1 and a valve VS1 for a slow flow and a valve VJM for a rapid flow, which valves are operated in parallel. One type of fuel 2 is supplied from a storage container to the dispensing nozzle 20 via a line 22, a similar pump, flow meter and valve arrangement. The electrical connections between the various elements of the system according to FIG. 1 are represented by individual lines with labels. The unit 13 for selecting and forwarding the types of fuel is shown in detail in the i ^l Ig.2, while the control and resolution unit 15 in Figures 3a and 3b is shown in detail. A device suitable as a computer 14 is disclosed in the pending patent application

US Air, submitted:

described.

The coin handling device 16 may be of a conventional one Execution exist and has one or more slots for the insertion of coins, in the present Jtelle One dollar and five dollar tokens are used, with an output pulse on the for every dollar one token

/! 09886/0711

Conductor 24 and an output pulse is generated on conductor 25 for each 5-Sollar token. Pennies _s Ιί ± οϊ; © ΐΒ _Ρ Stranding quarters and dollars as well as with a mechanism; which issues coins depending on τοη a signal _{for which is} fed via an input conductor from the control and dissolution unit 15 . The coin handling unit rejects the receipt of tokens more firmly on the basis of a signal from the unit 13, for example by blocking the insertion keys or by rejecting the tokens.

In a typical system, one. Housing swei display fields, turned away from each other, are provided, as seen from both sides of the housing thrower, liöaias ^ ic The coin insertion slots and the coin return shell are not arranged at one end of the housing äes Seliäiiseg be presented. In the version shown.? £ ope. wirfi eis äsrkömu: - licher two-channel tube also used with a single tap, the two-channel clamp connected to the el'iea in a swii ^ en tube Sohlaucii besr'jeiien ksun. o-clsr ¹ ciiS-uL · an? s ^ e £ running side by side and with «iii ^ ner T ^ rfeiaidciisii Söfeläi: - chen can exist. In some states * Sesct ^ e wrote separate flow paths for different powerit-öffbortsn iror "with the only common part of the Stroanaiggpfaas being the joisgab" = nozzle itself. The Jü'ige4 shows a summary of the flow paths for the region in which separate flow paths are prescribed. In this arrangement, the valves are located upstream of the pump and the flow meter so that only one pump and only one flow meter is required.

The display board 10 has four fields 26, 27, 20 and 29 on, behind which the conventional sun display elements are arranged. The j'eld 26 shows the volume with four digits of the fuel used during a sale in hundredths of a gallon. The field 27 shows the with four digits Price of fuel issued in dollars and cents. The field 28 shows in two digits that by throwing in Tokens built up balances, while the i'eld 29 in three

2 0 9 8 8 8/0711

Digits displaying the price of a gallon of fuel in cents and tenths of a cents. The display board is also illuminated with three Push-button switches labeled Sorte 1, Sorte and OFF, in the embodiment shown in FIG the switch OFF lights up when the system has been reset and can be used by a customer »The customer selects the required type of fuel by pressing the relevant switch. If the "Type 1" switch is operated, the switch lights up and the price per unit of quantity of fuel type 1 appears in display field 29 · If the switch for type 2, this switch lights up and the price for a quantity unit appears in field 29.

The J? Ige5 shows another embodiment of a display panel 32 with the fields 26 and 27, which correspond to the relevant fields of the display board 10, for the field 2b there is only one digit provided that the loan is capped at $ 9,000. Mr the PeId 29 that shows the price per unit of measure two three-digit number fields are provided. If the system is put on hold and ready for a customer, the Price per gallon displayed for both types of fuel. Chooses a customer has a certain fuel supply through .activate the button, the price for the selected variety remains visible on the display board, while the other price indication turned off or deleted. The variety control unit according to FIG. 2 can be used with both types of display boards will.

The display decoding unit 11 consists of the conventional one Design that receives the data in binary code and in a form suitable for the display elements of the display boards converts.

The control panel 12 is suitably located at a central location located, e.g. in the office of the gas station. The control panel is with a price setting switch 33 for the premium fuel and with a same switch for that second-class fuel. Both switches 33 »34 can each consist of a three-digit switch with ten settings,

209086/0711

the "binary coded and '» r "^ ^J -alI" ^ j-üsllsade Sig

nale generated, the eggs S ⁺ - * l - * ^ "" ¹ ^ -S s

be, and the TarJ- - 1 "ei ¹ · ¹ I 11 Il" jsll switch visible at I ^ ~ i "jllt" ^ I jy <-isi fsraei? Ti ^ r data memory 35 on, ii l ^ i ^ r "-, -cirfce ¹ ifzkuiife in dollars and gallons for both \" ■ £ s l— - "* ε ^ - ^r Ui @ ^ werileji., Furthermore, on the board" ν υ-i ^ n ^ ei · ^{1 T} sin 3iE. »Aiis ° 2e! IaI ter 36, a standby""» «ri ^ - ^ _ -» ι. 1 - ζ ^ Γ ύμΆ sis. Mol: -> reimbursement sciialter 38, * - τ ^{T (} i "kil ι» radial used for © lae reimbursement ν r ^ * ~ " ^r i ooSi sesslis'ieiö'aii

will.

; lrteiseil

2? B2Iuid ^ J

Every Strömuiigsmesset nal, which, as I; ie Stxömungsmeeser conventional impu

The first execution form generates ί ^ · 'ν-3Γ Zs ^ lsgoiiu ^ a ^ os ¹ ISQ Impose per gallon or one Xsrpul, 3 for _{€ i} ecl & Huüdertstelgalloiiet you output impulses from the streams GSii ^ @: ΐΐ> 3ϊϊ 3. ^ 2- Zont ^ oJLl- unit 13 as input zxiget üiir ^ * Dis Ιίοη-Jr-Dll- oäss? 3tei3.Q2 »© i2j- heit 13 either selects the gelling impulses for KIcäes 1 ocier sur Elasse 2 and forwards the one computer 14«

A preferred embodiment of this control and routing unit 13 is shown in detail in FIG. 2, in which the usual symbols for the circuit elements have been entered, and which has a resistor 4-1 , a capacitor 42, an inverter 43 » a Kegaticns -ÜIiD-Q-atter 44 and 45 and a flip-flop circuit 46 »

If the button switch for class 1 actuated, a signal appears at the corresponding connection parts in Fig. 2. This signal goes through a logic circuit and appears as an input at the gate for the Class 1 sales store, at the gate for the pump of the Class 1 and for the slow flow valve iire1 and on the gate for the fast flow valve Mr.1. If the pressure switch for class 2 is actuated, similar signals appear at the connection for the Class 2 switches and on the gates for the sales store,

2 09086/0711

for the slow and fast flow valves and for the pump.

When fuel is dispensed, the computer generates an output pulse for every penny sold. This one-cent impulseβ are used as inputs to the gates for the store's sales Class 1 or Class 2, depending on the customer's choice selected fuel type. The control and resolution unit 15 determines if the valve is for a slow or for a rapid flow should be opened and closed. The signal to open the valve intended for slow flow is fed to the associated input contact and all gates for the relevant valves and pumps. The signal for that a valve causing a rapid flow becomes the relevant valve input contact and the gates of the relevant valves fed. The type of fuel chosen by the customer determines whether the valve and the pump are for the slow or the fast Flow set in operation by the flow signal in question shall be.

By detaching the relevant pushbutton holder the customer selects the type of fuel desired, and in one embodiment of the invention the customer can change his choice, as often as necessary until fuel dispensing actually begins. In another embodiment, this can only be done after a token has been inserted into the machine and a credit has been opened. The gates 50 and 51 and the cross connections at 52 determine the time at which the fuel class is permitted to be forwarded. With a cross connection at !? 2 between A and C, gate 51 is under control and only allows forwarding if the filling nozzle is in use and a minimum amount of fuel has not yet been dispensed has been. If the nozzle is removed from the holder, a corresponding one is made in the conventional manner Signal is generated which is fed to gate 51 as an input. The computer calculates the fluid flow, and when At the beginning of a filling period a predetermined amount of fuel has been dispensed, the gate 51 is given a minimum flow signal fed as a further input. This can

209886/0711

carried out in the manner; * are generated that dae ^Tr öliaaenrsgisier fies computer an output wesii a ZsJri / itle OAES ^ ¹ sis. Swa: - one gallon or one aMer; Töi ^ isrüegtiinats üeng © fuel has been issued . Is there εΐΐι oil © EG ^ ausnaiias Ae pump nozzle from the holder indicating? Signal zorzLz a idin & ea flow signal is present, blocks OCE is output ειΐ3 & Sstbsr 51 to transition from one class to sslbst andersn- ^ eiiEi a class or Sortenwähi he actuated switching wireU

at 52 a connection is made z ¥? iscli & n ^ ¹ KiId. r instead of A and G, then determines aas G-ati-sr i ^ C. whether ciis fuel classes are passed on, if the Εϊιβο, θ has no credit, that is, if no tokens have been issued, or if the said purchased fuel has been issued and a return has been made eier control and monitoring unit 15 generates an eir ^ epreheiifisE signal and the gate 50 as eic input- j>: aeii "besKdstsr fuel output and the return notification fies ^ 'pyliaf-Igelcler- v; irö. ii: öez ⁵ control and resolution time eir.5i.l: oki? i ^: ell & igii £ .l © rse ^ gts das the gate 50 as another iiiijgaB.3; cugöfΐ1Ιϊ. ^ ΐ v? irclc Bs is a credit, and is the ir-lags üüÄiokffestell "^ se the gate 50 allows the forwarding of the Eraft £ i ^: oi "fi £ -or-te siu ₆

The gates in i ^ bsüiinitt 33 determine whether or not forwarding of fuel classes is permitted or blocked. Inverter 56 are ratchet * The two gates at 56 ^f act as locking _s so GSSB OCE customer the push button switch concerned while else :? Eraft «do not have to keep pressing the substance output, so that a control signal indicating a class selection is generated after the output of A increases at 52 and is suppressed by the two gates on the right in 53.

The gates in section 55 fees tinmen, the clearing and the In introducing the currents * Place the two gates at 54 a locking switch for the AÜS push button switch, preventing a flow when the off-sight switch is on the display panel is operated * or when the nozzle is not

2Ü988G / Q711

is in use and when the system is reset to its original state has been. At this time the "OFF" lamp is receiving power through gate 44. At the beginning of a fuel dispensing, when the nozzle is removed from the holder and the type has been selected, the gate 57 is blocked and gives the Lock switch 54 free so that the flow of liquid can be initiated.

If the flow of liquid is to be interrupted without the nozzle being reinserted into the holder, the switch on the display panel can be operated, whereby the lock is established, the flow is interrupted and the lamp "OFF ^M " receives power. To start the flow again, the type selection switch for the fuel type that has previously been selected must now be actuated. The gates 58 determine which type selection switch can cancel the lock, and only the gate for the previously selected fuel type can be opened by a type selection switch. The gate 57 is opened and the locking lock is released again. However, if the fuel nozzle has been inserted into the holder again after the AÜS switch has been actuated, the gate 57 would be locked so that the OFF lock cannot be canceled again . If the customer would like to take more fuel afterwards ake, so he would then have to wait, issued to the change and the plant in the baseline condition is ^y, which is inserted into the machine one or more tokens or coins, and a type of fuel can be selected, thereby initiating a new filling period.

The type forwarding and control unit 13 is provided with means that the outputs of the pulse generators of the flow meters to the computer 14 and to the volume memories or counters on the control panel 12 for the gas station attendant. The 1/100 gallon pulses from the flow meter fill for the the first type are supplied to the flip-flop circuit 46 via the inverter. The gate 45 is between an output and a The input of the flip-flop circuit 46 is switched, after which a predetermined time, .after the SET impulse the

üi .: 9886/0711

21209741

on en ^;

Inverter 43 durcLIa

the time delay

gang of PlipflopschHltu. ;;.; -c "vi ^ l:; Ls. aizi Siiigang sissa 5s ^ divider 62 supplied, dar ils ^ uggang SeMitelgalloneniarpiilss supplies volume counter. Sine ^ Isioiia Selialtmag is for the hundredths of a gallci: eE-Im ^" j "£ j '. aiis Its Iapiilsgsserati for the flow meter ΐ ^! ^ α2, ΐΐ, β dsm Sen ^ sBsäiiles = liilsr the type of fuel Zehntslgall

gear of the flip-flop attitude

is opened and the Hvm.6t

forwards if the ers'"e E: raftstcffsorte ge ^ äilt In the same way, H ^ nciertstelgallo2ie3a-Iaip-o.lse for the variety 2 from o-att ^ r 64 snm Jcsapiite ^ Tisitergslsi ^ s ^ n 7? e2iG ΐ second fuel type selected "T / ircu bis S-STiier SJ ₅ € 4 Tsaäm dem the forwarding of 7vl" 2.eiii3rpnIssE. egg siiaen SOr ^- Ss ₅ -; the other type was chosen *

Will, dxc AjrilLci z "^ πρ ^ l" ¹ "" ^ ¹ ^^ * ^ιι! γ1- *. ^ / ί- ^ t ■: "· ^^ ^? j, τ ^ .- ι ^ ^^ h, .. ^. ^ ₁ τ" ^ ?! τ * - ^ iLt ^^ u individual Does the flow meter have * se ifferdes cii® §atter 63? not required. There are ge-icfc. s ^ ei -seitez ³ © G-ai "" ssr sum optional forwarding -äer ToluMenimpiilse z "a ten counters for the first and the second variety under the Zositrolls of the variety selection circuit.

While in the preferred embodiment of the dispenser, a slow flow valve, or a rapid flow valve, is used in parallel to provide rapid flow for most of the fill period and a weak flow at the end of the overfill period; so a single flow control valve with a single flow rate could also be used if desired. The device initially provides a weak flow which increases after a predetermined period of time, generally after the first half gallon has been dispensed. The type forwarding control unit 13 takes over this control function and also enables the time at which the valve is opened for a rapid flow to be changed. The gates controlling the valves for the slow flow receive as inputs the signals for the slow flow and the type selection signals.

^ 09886/07 11

Get the gates controlling the valves for the rapid flow the signals for the rapid flow, the sort selection signals and a flow initiation signal as inputs. The flow induction processing signal is passed on by gate 64 'and by two gates, which are operated as locking means 65. The connection contacts A, ü, C and D at the input of the gate 64 Tenth of a gallon signals are fed from the computer in binary encrypted form. By optionally connecting the Gate inputs 1, 2 and 3 with the connections A-D and with one For power reference, gate 64 can be opened for any volume from one tenth of a gallon to nine tenths of a gallon will. In the circuit shown in Figure 2, the valves for the rapid flow via the gate 64 'and the Latch 65 Operated When Five-tenths of a Gallon Has Been Dispensed. The circuit remains in this operating state during the remaining part of the output perlode, until the interlock circuit in the initial state is reset by a signal on the reset conductor.

The price per gallon for each type of fuel is determined by the gas station attendant set on the control panel 12, to the display panels and forwarded to the computer, according to the choice of type, which forwarding takes place via a circuit matrix 67, which can consist of the conventional design for binary coded decimal information. Prices for the first and The second type of fuel is assigned to the matrix 67 via the ladder 68, 69 supplied »One or the other price is transmitted to the computer depending on the type selection signals at the inputs 1 and 2 of the matrix 67 · On the display board 10 one or the other price for a gallon of fuel is shown chosen. A selection signal at input 1 of the switching matrix 67 is transmitted transmit the price per gallon for the first sort to output conductor 1. In the same way, transmit a dial signal at entrance 2 the price for the second variety to exit manager 2. For the display board 10 according to FIG. 1, the output conductors 1 and 2 are connected to one another by a bridging conductor 71, because only the price for the selected fuel type is displayed

will·

/ 109886/0711

-13- 220974 Ί

According to the display panel 29, the Iigc5 is omitted from the bridge conductor 71, while the side in which the Eimae is approaching the tapping point, the system is returned to the IUisgangssiisteiicl, and the OFF lock i> 4 is iisrge ε divided on the inverter 73 if there is a high input yc2? j eö össs at both gates 74 a low input is present _s wälarenä the two outputs of the gates are high siM _f so that the prices of both types of power are displayed «V / ird the fuel nozzle afegenoEMet. and selecting a sort _s so the Aue-Yerriegelimg is canceled and the inverter 73 taken out .Betrieb so that ate. Satter high common inputs are present, jsttnmelir the price for the unselected variety is deleted, while the resident for the selected variety remains. -If desired, the prices for both types can still be displayed, whichever one . The purpose of the display means 1 and 2 is to be connected to earth via cross-connecting conductors at 72.

The iiampen the push button switch for the strain 1 and 2 are supplied with power before the S place eiwäiils ehalte rii -ob sr the gate 75 and the inverter 16 _t the OFF switch is operated, the OFF current .uartipe receives ~ *

As an example, let it be mentioned that the inverters of the type Dui [936Jtf, the two input jwegation UaD gates from a 2 type DMy46i4, the three input aegation UaD gates from the i. UuD gate with the expander from the type DMy32I, the plipflops from the type DiayO93ü · vciä the decial divider I? 2 from an SM 7490 decade counter _e

A preferred circuit for the control and signaling unit 15 is shown in Figures 3a and 3 "b at each Inserting a one dollar token generates the Münaeiiiaandiiab- « device 16 a pulse signal for the one dollar inputs (Fig.3b). This pulse is used as an input to a decade counter Ö1 fed via the line 82 to the inverter 83 "the gate" 4 and latch circuit 85 »One input to the latch circuit goes low on the one dollar signal, while the other input is low at the end of the pulse signal the interlocking circuit prevents the decade counter from having several signals fed to deai

2 03888/0711

22097A1

springs of contacts and the like in the coin handling device could be generated. The decade counter 81 is set up to receive up to nine dollars in credit the facility can handle a larger credit, a second decade counter 86 can be provided, with the D output of the counter 81 is fed as an input to the counter 86. The number in the units place for the credit index 28 on the scoreboard 10 is generated in binary-coded form at the outputs A, B, G, D of the counter 81. In the same way are the numbers of the tens place generated by the corresponding outputs of the counter.

Section 88 in Pig.3b is intended for handling a token with a different value and, in the embodiment shown, for 5 dollars; for each token worth 5 dollars, an impulse occurs at the corresponding input contacts on, the portion 88 acts as a pulse generator and generates for each input pulse on conductor 82 five pulses. The ratio of the output pulses to the input pulses is determined by a module-n divider 89, which can be set so that each number 1 is divided by 15 by means of a corresponding connection of the connection contacts P1-P4 to + DC and the grounding of the circuit «Die The connection shown in FIG. 3b is provided for a token in the Y / erte of 5 dollars, so that five output pulses are generated for each pulse at the input contacts, with an oscillator input at the connection contact 90 supplying the pulse train for the divider.

If the facility is operated for a deposit of $ nine or less without the counter 86, then at 91 a cross connection is established that generates a blocking signal, when the counter has counted 81 to nine, the receipt of further Tokens is prevented. A similar measure could be provided for the counter 86 if the establishment of a To prevent credit in excess of ninety-nine dollars · This would not be required at a gas station the current dollar money system is used, but might be desirable for the dispensing of other products and / or when using other monetary currencies.

2 09086/0 * 711

22097Λ

The divisors 94, 95 ₁ 9 & ^ ^ϊ1έ the Sadler 3? j 98 are au eiii registers for the Peimy impulsi- - ^ iis asm Ooiapiriser ztasaiasieiigesolialtet, which are fed to the divider ^ 4 as sin ISingsng ü'oer ein]? lipflop 99, which is operated as a moncstabil-ar vibrator wii * d _f as well as via a gate 1CO, 3as the ratio of Sisgang output 4 divisors is selected according to the used G-eldwälirüiig and cisn "special used coins. Biese 'IaIiI is carried out in the Weis® that corresponding connections swisclisa ties, .iuischschlusskontakten P1-24 and ier Circuit design as well as with ψΒΟ, '.ivA b? I of the illustrated Ixsf-jilirungsforsi exists between the üeiläTii sin ratio tsh 5 3 I ₅ wälirexio. With the divider 96 a ratio of 4 ί 1 consists of counting and converting pennies, ^ icksls -and Quarters, Bi © Zälalsr 97 and 98 are decade counters for sin vnu, see dollars. Depending on the currency used, 31 ₅ 86, 9Y ₃ 98 counters can also be used for other ratios *

The counting states of the counters 31 and 97 are in a comparator 102 compared with each other, while the counts of the Counters 86 and 98 in the same apparatus 103 with one another be compared. If there is a coincidence in both comparators, so, via gate 105, gate 104 is used as an input an ST03? signal supplied «When using a system with a For a maximum value of nine dollars, the counters 86, 98, the comparator 103 and the gate 106 can be omitted. The dividers and Counters 94-98 are interconnected so that the first Penny of the last dollar of the balance, the counter 97 is incremented so that a coincidence occurs at the comparators. The system continues to dispense fuel until the dividers 94, 95 and 96 count to the last switching step, where a Another STOP signal is applied to gate 104 as an input via gates 110, 111 and 112. Lying at gate 104 If both STOP signals are present as inputs, this gate is blocked and generates a "no more credit" signal on conductor 113.

The system blocks the valve causing a rapid flow before the fuel is dispensed, so that the extent of the flow drops in two stages instead of one stage.

2 09886/0111

A decade counter 114 (FIG. 3b) is reset to its initial state via gate 107 by the first STOP signal from gate 105 and when the first penny of the last quarter after the output of divider 96 has been used. The five-cent output pulses of the divider 94 are fed as inputs to the counter 114, the counting status of the counter being compared with a preset value in a comparator 115 '. If there is a coincidence, the valve for the rapid flow is blocked. The time of this blocking can be determined in advance by making appropriate connections between the terminals B1-B4 of the comparator 115 'with + DC and the circuit ground. As shown in Jj ¹ Ig.3b, the valve for the rapid flow is blocked when fifteen cents of the credit are still available.

If the customer reinserts the nozzle in the holder before the credit is exhausted, the system pays the remaining amount back to the penny. As an input for the divider and counter 94-98 instead of the penny Iinpulae Pay pulses used to generate the payout signals. the Timing for the payout pulses are provided by pulse generator 110 and flip-flop circuits 111-114. The disbursement impulses are routed from the output of flip-flop 111 via gate 115. The pulse frequency can be changed by changing the frequency of the generator 110. The gate 115 is opened by the lock 116, which is operated by the gas station attendant can be switched to "payout" using the key operated switch 38 on the control panel 12 via the gates 117 and 118. The flip-flop circuits 113, 114 and the Gates 119 remain locked by the latch 119 until the Minimum flow has taken place and the fuel nozzle has been reinserted in the holder, so that a repayment only after these operations can take place. The filling nozzle stop signal and the minimum flow signal are jointly fed to gate 120 which actuates latch 119. From the flip-flop 114 a further input is fed to the gate 118, which is only opened with a delay after the fuel nozzle again has been attached. The gate 118 becomes the flip-flop 111

/ Π 9 R 8 Π / Ο 7 1 1

2 2 O 9 7 Λ 1

the third input is supplied with the consequence that a payment period can only begin after the state of the Flip-flop 111 has changed so that a full period of time is available for the initial payment pulse.

The payment pulses are fed to the rope maker 94 via the gates 100 and 125 as an input. The payment pulses also cause income change signals to be supplied via the interlocking circuit 126. Depending on the state of the rope maker 94, up to four pennies are paid out. If a full count is reached in the divider 94, the gate 125 is blocked and the gate 110 is opened, so that the divider 95 is supplied with payment pulses as inputs via the gates 127 and 128. The Zah ~ lungsiiapulse are now as a five-cent-off payment, signals through the latch circuit 129 passed _o When paying by Kickeis and Quarters operates the system in the same manner as in the payment of pennies. If the system is set up as shown in the 131 dollars are paid out, at which 132, 133 bridging ladders are provided _c

Gate 140 controls both slow and fast flow valves. Hit a signal from the interlock circuit 116 the valves are kept closed in the event of a repayment. The valves are also kept closed, when there is a minimum flow and the nozzle has been reattached, namely by a signal from the lock circuit 119. If the nozzle is in the holder, the valves are activated by a signal from the filling nozzle switch kept closed. If there is no credit balance, the valves are activated by a signal from the interlocking circuit 141 and held closed from gate 142.

The reset pulses for the entire system are generated by the latch circuit 145. The relocation The initial state takes place after a predetermined period of time has elapsed after gate 146 has been opened. The IPlipflop

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provides a train of pulses as an input to the decade counter 147, the counters being cleared when the gate is activated 146 is opened. At a certain counting state, which is dependent on the inputs applied to gate 148, the Reset latch circuit 145 operates and generates the reset pulses. The length of the delay in the deferred period can be determined by making suitable connections between the counter outputs A-D and the gate connections 1-% The gate I46 is opened after hanging the fuel nozzle via the interlocking circuit 116 and via the interlock circuit Hl when there is no longer any credit. After the filling nozzle has been re-attached, the gate 146 can also be opened by means of the key-operated payout switch.

As an example it should be mentioned that the module-n-divisor from the Type Dai852O, the decade counters from type SN749O and the comparators can consist of type DM8200.

During operation, the system is reset to its initial state, and the gas station attendant sets the price per gallon Fuel at the switches 33, 34 on the control panel 12. A customer comes and throws one or more Y / er-

and 86 marks, the number of which is registered in counters 81, whereby a credit is created. The customer takes the nozzle out of the holder, using the relevant switch is actuated, then the fuel nozzle is inserted into the vehicle tank, after which the desired type of fuel is selected. When choosing a type of fuel, the relevant display means and controls put into operation. In addition, the pump and slow flow valve in question will be in operation set, and when the manual valve on the nozzle is opened, the fuel is dispensed. The coins or Marking can be done before or after choosing a fuel type be thrown in, .flat the issue of a predetermined Minimum amount of fuel will also open the valve for a rapid flow, and after issuing another predetermined one Minimum quantity, which can be equal to or larger or smaller than the first minimum quantity, the selection of the variety is blocked.

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The flow meter generates volume pulses for the computer, which uses these pulses and the price per unit volume to calculate the sales price and volume. "The penny pulses aue the computer" are counted in the multi-level register (94-98), and it is generates a signal that stops dispensing the fuel when all the credit is used up. Furthermore, the valve for the rapid flow is closed a predetermined time before the credit is exhausted. Thereafter, the valve for the slow flow is closed and the pump is switched off when the credit is no longer available. If the customer inserts the nozzle into the Eaj-ter again, the nozzle switch is actuated and the system is automatically reset to its initial state for the next customer.

The fuel dispensing stops before the credit runs out is, and the fuel nozzle is inserted into the holder, the excess amount is paid out to the customer from the credit. The fuel dispensing can be stopped at any time by Press the OFF switch on the display board. Will the fuel nozzle is attached again, the remaining amount will be paid out from the credit, provided that a Minimum flow of fuel has occurred. If the customer requests a refund after inserting one or more tokens a fuel withdrawal, the gas station attendant can make the payment initiate by pressing the corresponding switch on the control panel 12.

In the embodiments of the invention described above Experts can of course make changes, modifications and replacements within the scope of the inventive concept. The invention itself is therefore only defined by the appended claims delimited

Claims

'/ 09886/0711

Claims (2)

Claims M J dispensing device for the optional dispensing of a first and a second liquid through a dispensing line, characterized by a measuring device for measuring the flow the first and the second liquid in the dispensing line, wherein a flow signal is generated, which as a puncture of the dispensed liquid is variable, through a first and a second valve for regulating the flow of the first and second liquid in the discharge line, by a device that generates a price signal for each of the two liquids mentioned, by a computer, as inputs a flow signal and a price signal receives and generates a sales price signal and a sales volume signal as outputs by a liquid selection device, the first and second fluid signals for selecting one of said fluids for dispensing generated by a display device for displaying the price per unit volume, the sales price, the sales volume and the selected liquid based on the inputs supplied and the price per unit volume, the sales price, the sales volume and the selected liquid relevant signals, by a forwarding control device, which as inputs the price per unit of volume, The signals relating to the flow and the liquid are fed, and the outputs to the computer selected price and flow signals and as outputs of the Display device supplies the selected unit price and liquid signals, and depending on the Selected liquid related signals to the valve concerned supplies a control signal so that the selected liquid. output and calculated, with the price per volume unit, the sales price and the sales volume the dispensed liquid is displayed » 209886/0 711 2. Device according to claim 1, characterized in that said measuring device consists of an upstream of the first Valve arranged first flow meter, which measures the flow of the first liquid and a first flow signal generated, as well as from an upstream full second Valve arranged second flow meter, which measures the flow of the second liquid and an aweites Generates flow signal, which two mentioned flow signals of said I / eiterleitungssteuereinrielitung as Inputs are fed, which feeds the one of the flow signals to the computer. 3. Device according to claim 1, characterized in that said measuring device is a flow meter arranged downstream of the first and second valves, which is the Measures liquid flow and generates a flow signal, which is fed as an input to the computer. 4. Device according to claim 1, 2 or 3, characterized in that that the display device means on v / e, which at the same time a first and a second price per unit of volume indicate, depending on signals from the routing control device relating to these prices, that the forwarding control device has means which as an output for the display device both the price per Volume unit relevant signals supplies, if no kind of liquid has been selected, while as an output the signal relating to the price of the selected liquid and the corresponding price per unit volume for the selected liquid is displayed. 5ο device according to claim 1, 2 or 3, characterized in that that the display device has means which, on the basis of a corresponding signal from the forwarding control device indicate a price per unit volume that the routing control device has means that as an output for the display device only generate a price per unit volume signal when a liquid / 09886/0711 has been elected » 6ο device according to one of the preceding claims, characterized through a first circuit that disables the liquid selector and the generation of the first and second liquid signals prevented by a second circuit that generates a minimum flow signal, when a predetermined minimum amount of the liquid has been dispensed and through a third circuit which forwards the minimum flow signal to the first circuit for a post-dispensing liquid selection to prevent the minimum amount. 7. Device according to one of the preceding claims, characterized by a second display device with a remote from the first display device first and second sales volume registers and having first and second sales price registers, wherein said price device on the second display device manually adjustable means for changing the price signals relating to each volume unit, and by switching means, which are the flow signals for the first and the second liquid to the first and the second sales volume register feed, and the sales price signals for the first and the second liquid to the first respectively. to the second price register, 8, mint operated liquid dispenser with a Pump, with a flow meter, with a flow regulating valve, with a dispensing line, with a computer, the monetary value pulses as a function of the dispensed liquid generated, and with a cash dispenser that dispenses coins of different monetary values, characterized by a first register for registering sales units that are a predetermined multiple of the monetary value pulses by means of receiving coins and the contents of the first kegister by a number of sales units increase that corresponds to the coins received, ■ ^{Πϋϋ8Β / η7} "BADORKÄNAL through a second hegister for registering monetary value impulses, which has a number of stages connected downstream of one another, which correspond to monetary units, by a Comparator to which the states of the first register and the sales unit states of the second register as inputs and which generates a first STOP signal when there is a coincidence between the registered sales units, which second register has means, the content of the sales unit level by a sales unit increase with the first Seidwertimpulse of a sales unit, said first STOP signal being generated when less than one sales unit remains to be dispensed, which second register has means which generate a second STOP signal when up to the complete counting state no longer sufficient sales units remain due to a first device that receives the first and second 3T0P-3 signals are supplied as inputs, with a "no credit" indicating signal is generated when both stop signals are generated, and by a second device which is due to of said signal closes the flow regulating valve, 9β device according to claim 8, characterized by a third means for generating disbursement pulses, and by a fourth facility that provides the payout impulses successive stages of the second register, with the content of each stage being increased up to the final value, when the flow regulating valve is closed in the absence of a "no credit" signal, as well as the inputs of the Coin dispensing device which dispenses coins in a value, which corresponds to the monetary units of the levels. 10. A device according to claim 9, wherein said fourth device comprises means which act on the basis of a control signal prevent or enable the forwarding of the disbursement pulses, characterized by a first circuit, the a minimum flow signal is generated when the minimum amount Fuel has been dispensed by a second circuit that generates a nozzle signal when the delivery line nozzle > Π 9 H 8 6/0 7 1 i is not in use, and by a third circuit that has the minimum flow signals and the nozzle signals as inputs receives and the said fourth device supplies the control signal that a forwarding of the disbursement pulses after the specified minimum amount of fuel has been dispensed and the nozzle is not in use. 11. Device according to claim 8, 9 or 10, wherein said first register has means for registering sales units and their multiples, characterized in that that said second register has a level corresponding to the sales units and a multiple of sales units corresponding following stage, and that said comparator has means that the first Generate SOP signal when there is a coincidence between the sales units and the multiples of the sales units. 12. Device according to claim 8, 9 or 10, characterized in that that the coin dispenser comprises means for dispensing coins of different denominations, each Coin value is a whole multiple of the next lower value, and that said second register is one level for each having an integral multiple, which requires a number of input pulses corresponding to the integral multiple in order to to generate an output pulse for the next stage, 13o device according to claim 12, characterized in that that the integer multiples of the second register level can be changed so that they match the coin values of others Correspond to monetary currencies. 14 ·· Coin-operated device for the optional dispensing of first and second liquids through a dispensing nozzle with a pump, with a flow meter, with a dispensing line and having a device for dispensing coins of different denomination, characterized by a device for generating a flow signal that functions as a 7 0 9 8 8 6/0711 of the liquid dispensed by the flow meter is variable is, by first and second valves, to regulate the flow of the first and second fluids in the output line, through a price unit to the Generating a unit price signal for the first® and the second liquid, by a computer, to which a flow signal and a unit price signal are supplied as inputs and the output generates a sell price signal, a sales volume signal and monetary value impulses as a function the dispensed liquid, through a liquid selection device, which generates first and second liquid signals for selecting one of the liquids to be dispensed, by a display device showing the price per unit volume, the sales price, the sales volume and the selected Liquid in the form of the price per volume unit indicates, through a transmission control device, the unit price, stream and liquid signals as inputs receives and as outputs for the computer the selected price and flow signals and as outputs for the display device generates the selected unit price and liquid signals, and the corresponding one Valve a control signal based on one of the liquid signals supplies, whereby a selected liquid is dispensed and the unit price is calculated and displayed as well as the The sales price and volume of the liquid dispensed, through a first register for registering the sales units, one sales unit being a predetermined one Multiples of the monetary value pulses of the computer is, by a device for receiving coins, which the The content of the first register is increased by a number of sales units corresponding to the coins received a second register for registering monetary value impulses the computer, which second register has a number of stages following one another, the monetary units correspond, through a comparator, to which the states of the first register and the sales unit level are inputs of the second register, a first STOP signal being generated if there is a coincidence 2 0 9 8 8 B / Π 7 1 1 in the registered sales units, which second Register has means that increase the content of the sales unit level by one sales unit with the first Monetary value pulse of a sales unit, the first STOP signal being generated when less to dispense the liquid as a sales unit remains that the fcwide Register has means which generate a second STOP signal, if the sales units are no longer sufficient to reach the final value, by a first device, the The first and second STOP signals are supplied as inputs and which generates a "no credit" signal when both STOP signals are present, and that the second device ceases to output the fuel on the basis of said signal terminated by the valves » 15 · Device according to claim 14 »characterized by a third device for generating disbursement pulses, and a fourth device that generates the disbursement pulses to the stages of the second register, the content of each stage being increased to the maximum value when the valves are closed in the absence of a "no credit" signal, while the coin payout device receives input to the Issuing coins that represent the monetary units of the levels correspond. ? 0 9 a 8 6/0 7 1 1 1Ψ