U.S. patent number 3,580,421 [Application Number 04/878,319] was granted by the patent office on 1971-05-25 for fluid dispensing apparatus indicator system.
This patent grant is currently assigned to Veeder Industries Inc.. Invention is credited to John H. Bickford.
United States Patent |
3,580,421 |
Bickford |
May 25, 1971 |
FLUID DISPENSING APPARATUS INDICATOR SYSTEM
Abstract
A fuel dispensing system having an indicator subsystem with a
liquid crystal indicating device adapted to be operated for
displaying, one at a time, the established unit volume price of
fuel, the volume of fuel delivered and the total cost of the fuel
delivered. A sequencing switch provides for operating the
indicating device to display the cost, volume and price information
in sequence at the beginning and end of a fuel delivery and a
manual selector provides for selectively operating the indicating
device to continuously display the cost or volume or sequentially
display the cost, volume and price during the delivery. The price
is displayed between deliveries and a recycle button provides for
temporarily displaying the cost, volume and price information both
during and between deliveries. A two-product dispensing system
schematically shown in FIG. 2 comprises two indicator subsystems
and a manual selector for selection the product information to be
displayed by each subsystem.
Inventors: |
Bickford; John H. (Middletown,
CT) |
Assignee: |
Veeder Industries Inc.
(Hartford, CT)
|
Family
ID: |
25371789 |
Appl.
No.: |
04/878,319 |
Filed: |
November 20, 1969 |
Current U.S.
Class: |
222/27; 235/94R;
377/21; 345/51 |
Current CPC
Class: |
B67D
7/228 (20130101) |
Current International
Class: |
B67D
5/22 (20060101); B67d 005/16 () |
Field of
Search: |
;222/25,26,27,28 ;235/92
(V)/ ;235/92 (F)/ ;235/92 (EA)/ ;235/(Inquired),23,94.1,(Inquired)
;340/324 (R)/ ;340/334,336,338,(Inquired) |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Wood, Jr.; M. Henson
Assistant Examiner: Grant; Edwin D.
Claims
I claim:
1. In a fluid dispensing system having a plurality of registers
connected for continually registering different numerical amounts
respecting the delivery of fluid during fluid delivery, the
improvement wherein each of said plurality of registers comprises
readout means providing a signal of the existing numerical amount
registered thereby and wherein the system comprises an indicating
device having a selectively operably multiple place numerical
indicator adapted to be selectively operated by the readout means
of each of the plurality of registers to display the existing
numerical amount registered by the selected register, selector
means operable for selectively connecting the readout means of each
of the plurality of registers for operating the numerical
indicator, and control means for operating the selector means
including sequencing means for operating the selector means for
displaying the numerical amounts of said plurality of registers in
sequence.
2. A fluid dispensing system according to claim 1 wherein the
plurality of registers comprise a cost register connected to
continually register the monetary amount of the delivery of fluid
during a fluid delivery, a volume register connected to continually
register the volumetric amount of the delivery of fluid during a
fluid delivery and a price register settable to continually
register the established unit volume price amount for fluid during
a fluid delivery.
3. A fluid dispensing system according to claim 2 wherein the
system has an operating cycle with delivery and nondelivery phases,
wherein the cost and volume registers are resettable to zero and
wherein the control means is operable for activating and
deactivating the dispensing system for delivering fluid and to
automatically reset the cost and volume registers to zero during
the nondelivery phase between fluid deliveries just prior to
activation of the dispensing system for delivering fluid.
4. A fluid dispensing system according to claim 1 wherein the
indicating device comprises selectively operable descriptive
indicator means adapted for providing descriptive indicators of the
numerical amounts of the registers respectively and connected to be
operated in accordance with the operation of the selector means to
provide the corresponding descriptive indicator for the numerical
amount displayed by the numerical indicator.
5. A fluid dispensing system according to claim 4 wherein the
descriptive indicator means comprises a separate selectively
operable descriptive indicator for each register.
6. A fluid dispensing system according to claim 1 wherein the
indicating device comprises a plurality of selectively operable
decimal point indicators between different places of the multiple
places of the numerical indicator and connected to be operated in
accordance with the operation of the selector means to provide a
corresponding decimal point indicator for the numerical amount
displayed by the numerical indicator.
7. A fluid dispensing system according to claim 1 wherein the
system has an operating cycle with delivery and nondelivery phases
and wherein the control means is operable for temporarily operating
the sequencing means during at least one predetermined part of the
operating cycle of the fluid dispensing system.
8. A fluid dispensing system according to claim 7 wherein the
control means is operable for temporarily operating the sequencing
means in conjunction with the commencement of a fluid delivery.
9. A fluid dispensing system according to claim 7 wherein the
control means is operable for temporarily operating the sequencing
means in conjunction with the termination of a fluid delivery.
10. A fluid dispensing system according to claim 9 wherein the
plurality of registers comprise a cost register connected to
continually register the monetary amount of the delivery of fluid
during a fluid delivery, a volume register connected to continually
register the volumetric amount of the delivery of fluid during a
fluid delivery, and a price register settable to continually
register the established unit volume price amount for fluid during
a fluid delivery, and wherein the control means provides for
operating the selector means for displaying the unit volume price
amount of the price register after temporarily operating the
sequencing means in conjunction with the termination of a fluid
delivery.
11. A fluid dispensing system according to claim 1 wherein the
plurality of registers comprise a cost register connected to
continually register the monetary amount of the delivery of fluid
during a fluid delivery and a volume register connected connnected
to continually register the volumetric amount of the delivery of
fluid during a fluid delivery and wherein the control means
comprises manually settable means having at least volume and cost
settings adapted for selectively operating the selector means to
selectively connect the cost and volume registers for operating the
numerical indicator.
12. A fluid dispensing system according to claim 11 wherein the
control means comprises sequencing means for operating the selector
means for displaying the numerical amounts of the registers in
sequence and wherein the manually settable means comprises a
sequence setting for connecting the sequencing means for operating
the selector means.
13. A fluid dispensing system according to claim 1 wherein the
control means comprises manually settable means for selectively
operating the selector means for selectively connecting each of the
plurality of registers for operating the numerical indicator.
14. A fluid dispensing system according to claim 1 wherein the
system is operable for independently dispensing each of a plurality
of separate fluids and wherein said plurality of registers comprise
a plurality of price registers settable to register the established
unit volume price amounts of the separate fluids respectively.
15. A fluid dispensing system according to claim 14 wherein the
indicating device comprises selectively operable descriptive
indicator means adapted for providing descriptive indicators of the
separate fluids respectively and connected to be operated in
accordance with the operation of the selector means to provide the
fluid descriptive indicator corresponding to the unit volume price
amount displayed by the numerical indicator.
16. A fluid dispensing system according to claim 1 wherein the
system is operable for independently dispensing each of a plurality
of separate fluids and comprises a corresponding plurality of
indicating devices and banks of registers, each having at least one
register, for registering numerical amounts respecting the delivery
of the separate fluids respectively and wherein the selector means
is operable for selectively connecting the register banks for
operating each numerical indicator for registering each numerical
amount respecting the delivery of a selected fluid.
17. A fluid dispensing system according to claim 16 wherein each
register bank comprises a plurality of registers.
18. A fluid dispensing system according to claim 1 wherein the
system is operable for independently dispensing each of a plurality
of separate fluids, and wherein said plurality of registers
comprise at least one fluid related register associated with each
of said separate fluids for registering a numerical amount
respecting the delivery of the associated fluid only, and wherein
the selector means is operable for selectively connecting each said
fluid related register for operating the numerical indicator for
registering a numerical amount respecting the delivery of the
corresponding fluid.
19. A fluid dispensing system according to claim 18 wherein said
one registers are price registers settable in accordance with the
established unit volume price amounts of the corresponding separate
fluids respectively.
20. A fluid dispensing system according to claim 18 wherein said
plurality of registers comprise at least one indicator related
register associated with the indicating device and wherein the
selector means is operable for selectively connecting the indicator
related register and a selected fluid related register for
operating the numerical indicator.
21. A fluid dispensing system according to claim 1 wherein the
system is operable for independently dispensing each of a plurality
of separate fluids, wherein there is at least one register of said
plurality of registers connected for registering a numerical amount
respecting the delivery of each of said plurality of separate
fluids, and wherein the selector means is selectively operable for
selectively connecting each of said plurality of registers for
operating the numerical indicator for registering a numeral amount
respecting the delivery of a selected fluid.
22. A fluid dispensing system according to claim 1 wherein the
system is operable for dispensing a plurality of separate fluids,
wherein said plurality of registers comprise at least one indicator
related register associated with the indicating device, and wherein
the selector means is operable for selectively connecting the
indicator related register for registering numerical information
respecting the delivery of each of the plurality of separate
fluids.
23. A fluid dispensing system according to claim 22 wherein the
control means comprises interlock means for preventing operation of
the selector means for connecting the indicator related register
for registering numerical information respecting the delivery of
one fluid to a different fluid during the delivery of either of
said fluids.
24. In a fluid dispensing system having a cost register of the
monetary amount of the delivery of fluid and a volume register of
the volumetric amount of the delivery of fluid, the improvement
wherein the system further comprises a liquid crystal indicating
device having a selectively operable multiple place liquid crystal
numerical indicator, and selector means operable for selectively
connecting the cost and volume registers for operating the liquid
crystal indicator to display the cost and volume amounts
respectively of the delivery of fluid.
25. In a fluid dispensing system adapted for dispensing a plurality
of separate fluids comprising register means for registering
numerical information respecting the delivery of the fluids, the
improvement wherein the system comprises an indicating device
having a selectively operable multiple place numerical indicator
adapted to be operated by the register means to display said
numerical information, and selector means operable for selectively
operating the numerical indicator to display numerical information
respecting the delivery of each of the plurality of separate
fluids.
26. A fluid dispensing system according to claim 25 having a
separate dispensing nozzle for each of the fluids and wherein the
selector means comprises manually settable means for selectively
connecting the numerical indicator to be operated for displaying
numerical information respecting the delivery of fluid from each of
the nozzles.
27. A fluid dispensing system according to claim 26 wherein the
dispensing system is adapted for dispensing two separate fluids,
wherein the system comprises two of said indicating devices, and
wherein the manually settable means is operable for selectively
connecting one indicator for displaying numerical information
respecting the delivery of fluid from either one of the nozzles and
for simultaneously connecting the other indicator for displaying
information respecting the delivery of fluid from the other
nozzle.
28. In a fuel dispensing system having a delivery nozzle, a nozzle
storage receptacle for storing the nozzle between fuel deliveries,
control means associated with the storage receptacle and operable
to an "ON" position in conjunction with the removal of the nozzle
from the receptacle at the commencement of a fuel delivery to
activate the system for delivering fuel and operable to an "OFF"
position in conjunction ON" the replacement of the nozzle in the
storage receptacle at the end of a fuel delivery to deactivate the
system for delivering fuel, meter means for metering the amount of
fuel delivered, variator means driven by the meter means and
settable for establishing a unit volume price for the fuel, a
resettable cost register connected to be operated by the variator
for storing the cost of the fuel delivered in accordance with the
unit volume price established by the setting of the variator means
and to be reset to zero when the control means is operated to its
"ON" position, a resettable volume register connected to be
operated for storing the volume of fuel delivered and to be reset
to zero when the control means is operated to its "ON" position,
and a price register connected to the variator adapted for storing
the unit volume price established by the variator setting, the
improvement wherein the fuel dispensing apparatus comprises an
indicating device having a plurality of selectively operable
indicator digits and separate volume, cost and price identifying
indicators, selector means for selectively connecting the cost,
volume and price registers for operating the indicating device for
selectively indicating the cost, volume and price respecting a fuel
delivery and the corresponding cost, volume and price identifying
indicators, sequencing means for operating the selector means for
indicating the cost, volume and price in sequence, and control
means for temporarily operating the sequencing means upon operation
of the control means to its "ON" and "PFF" positions.
29. An indicating device comprising a liquid crystal indicator with
a first multiple place numerical indicator selectively operable to
display selected multiple place numerical information and a
plurality of separate descriptive indicators individually operable
for displaying an appropriate descriptive indicator for the
numerical information displayed by the numerical indicator.
30. An indicating device according to claim 29 comprising a
plurality of selectively operable decimal point indicators between
different places of the multiple place numerical indicator and
connected to be individually operated in accordance with the
operation of the descriptive indicators.
Description
BRIEF SUMMARY OF THE INVENTION
The present invention relates to fluid dispensing apparatus of the
type having notable usefulness in dispensing fuel and relates more
particularly to an indicator system for indicating information
respecting the delivery of fluid, for example the established unit
volume fluid price and the volumetric and monetary amounts of the
fluid delivered.
It is a principal aim of the present invention to provide a new and
improved indicator system for fluid dispensing apparatus for
indicating, one at a time, the volumetric amount of the fluid
delivered, the cost amount of the fluid delivered, and the unit
volume price amount of the fluid. The indicating system may notably
employ a liquid crystal indicator, for example a liquid crystal
indicator of the type shown and described in U.S. Pat. No.
3,322,485 of Richard Williams dated May 30, 1967 and entitled
"Electro-Optical Elements Utilizing an Organic Nematic
Compound."
It is another aim of the present invention to provide a new and
improved indicator system for fluid dispensing apparatus having an
indicator for displaying different types of information applicable
to the delivery of fluid on a time sharing basis.
It is a further aim of the present invention to provide a new and
improved indicator system for fuel dispensing apparatus adapted for
displaying the volumetric amount of the fuel delivered, the
monetary amount of the fuel delivered and the unit volume price
amount of the fuel in sequence on a single indicator.
It is another aim of the present invention to provide a new and
improved indicator system for fluid dispensing apparatus adapted
for displaying the established unit volume price amount of the
fluid prior to the commencement of a delivery and for selectively
continuously displaying during the delivery either the volumetric
or monetary amount of the fluid delivered.
It is a further aim of the present invention to provide a new and
improved indicator system for fluid dispensing apparatus for
selectively continuously displaying during the delivery either the
monetary or volumetric amount of the delivery and for sequentially
displaying at the completion of the delivery both the volumetric
and monetary amounts of the delivery.
It is a still further aim of the present invention to provide in a
fluid dispensing system adapted for delivering a plurality of
separate fluids, a new and improved indicator system selectively
operable for displaying information respecting the delivery of each
of the fluids.
Other objects will be in part obvious and in part pointed out more
in detail hereinafter.
A better understanding of the invention will be obtained from the
following detailed description and the accompanying drawings of
illustrative applications of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings:
FIG. 1 is a generally schematic view, partly broken away, of a
single product fuel dispensing system incorporating an embodiment
of an indicator system of the present invention; and
FIG. 2 is a generally schematic view, partly broken away, of a
two-product fuel dispensing system incorporating another embodiment
of an indicator system of the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to the drawings in detail wherein like numerals
represent like parts, and referring particularly to FIG. 1, a fuel
dispensing system incorporating an embodiment of an indicator
system of the present invention is shown comprising a fuel pump 22
operated by an electric motor 24 for delivering fuel via a fuel
meter 25 to a delivery nozzle 26. The meter 25 is suitably
connected to rotate an input shaft 30 of a variator 32 in
accordance with the volumetric amount of fuel delivered. The
variator 32 is settable for establishing the unit volume price
amount of the fuel and is connected for operating a cost counter or
register (storage device) 34 to continuously register (store) the
monetary amount of fuel delivered in accordance with the volumetric
amount of fuel delivered and the established unit volume price. A
volume counter or register 36 is provided for continuously
registering the volumetric amount of fuel delivered, and a price
register 38 is provided for registering the unit volume price
amount established by the variator setting.
The cost, volume and price registers may be mechanical registers
and if desired have suitable indicators for indicating the monetary
and volumetric amounts of fuel delivered and the established unit
volume price. Alternatively the registers 34, 36 may be suitable
electronic counters with or without cost and volume indicators as
desired.
The variator 32 and the price register 38 may for example be the
type disclosed in my copending U.S. Pat. application Ser. No.
868,070 filed Oct. 21, 1969, and entitled "Computing Device,"
wherein the price register is employed for setting the variator to
establish the unit volume price as well as provide for storing the
established price. Alternatively the variator could be of the type
disclosed in U.S. Pat. No. 3,413,867 of Richard B. Hamlin dated
Dec. 3, 1968, and entitled "Variator" and provide for mechanically
driving the cost and volume registers 34, 36 and for mechanically
setting the price register 38.
The cost, volume and price registers 34, 36, 38 have suitable
readout circuitry for providing a coded electrical signal of the
amounts stored in the registers. For example, where the registers
34, 36, 38 are electrically operated, each register could comprise
a plurality of individual decades 40 of the type shown and
described in U.S. Pat. No. 3,445,636 of Joseph A. Richards dated
May 20, 1969 and entitled "Single Wheel Counter Circuit" and having
a number wheel 42 (for visually displaying the cost, volume and
unit volume price, as applicable, stored in the register) and a
binary readout circuit for providing a binary electrical signal in
the readout leads 43--46 of the wheel reading.
In particular each of the registers 34, 36, 38 is shown having
three decades 40 with corresponding banks 50--52 of four binary
readout leads 43--46. The readout leads are connected to a suitable
selector switch 80 which is adapted to be selectively operated by
"cost," "volume" and "price" control leads 81--83 respectively to
selectively connect the registers 34, 36, 38 via suitable
decoder-driver circuits 84--86 for operating three numeral
indicators 90--92 of a multiple place indicator 94 of an indicating
device 96. The three indicators 90--92 are shown employing
"figure-eight" or 7-bar figures for selectively indicating each
indicia of the sequence 0--9 in a known manner and therefore
provide for selectively indicating the numerical amounts stored in
the registers 34, 36, 38 as determined by the operation of the
selector switch 80.
The indicating device preferably employs liquid crystals for
effecting the visual readout, and for example may be a liquid
crystal indicating device of the type shown and described in the
aforementioned U.S. Pat. No. 3,322,485, in which case the
indicating device can be made sufficiently large to be easily read
by the attendant making the delivery as well as the operator of the
vehicle to which the fuel is being delivered.
The indicating device 96 also comprises separate "gallons,"
"dollars" and "cents/gallon" descriptive indicators 97--99 which
are selectively energized with the leads 81--83 to describe or
label the numerical information being displayed by the numerical
indicator 94. In addition decimal point indicators 112, 114 are
provided between the numeral indicators and are connected to be
selectively energized by the leads 81--83 to properly place the
decimal point in accordance with the operation of the numerical
indicator 94. Thus, the decimal point indicator 112 would be
energized when the indicator 94 is operated to display the monetary
amount of the fuel delivered (in dollars and cents) and the decimal
point indicator 114 would be energized when the indicator 94 is
operated to display the volumetric amount of the fuel delivered (in
gallons and tenths) or the unit volume fuel price amount (in cents
and tenths of cent).
A storage receptacle 110 is provided for the dispensing nozzle 26,
and a control handle 112 is shown mounted adjacent the storage
receptacle 110 to require, in a conventional manner, the handle 112
to be turned to a vertical or "off" position shown in FIG. 1 before
the nozzle can be returned to its storage receptacle and to permit
the handle 112 to be turned (counterclockwise in the shown
embodiment) to its horizontal or "on" position only after the
nozzle 26 has been removed from the storage receptacle 110.
The cost and volume registers 34, 36 are preferably resettable to
zero and the handle 112 is connected for resetting the registers
34, 36 when the handle 112 is turned to its "on" position. The
registers 34, 36 are preferably unaffected by the operation of the
handle 112 to its "off" position at the end of a fuel delivery so
that the cost and volume amounts of the prior delivery remain
stored in the registers 34, 36 and may therefore be indicated by
the indicating device 96 during the nondelivery phase of operation
of the fuel dispensing system.
A suitable sequence switch 120 is provided for energizing the
control leads 81--83 in sequence to provide for operating the
selector switch such that the stored amounts of the cost, volume
and price registers are displayed in sequence by the numeral
indicator 94. For example, the sequence switch could have a
repeating 6 second operating cycle during which the cost, volume
and price are individually displayed in sequence for 2 seconds
each. Also the sequence switch functions to operate the descriptive
indicators 97--99 and decimal point indicators 112, 114 in
accordance with the operation of the selector switch 80.
In the shown embodiment the sequence switch 120 is adapted to be
automatically energized for a predetermined interval at, but prior
to, the commencement of a fuel delivery and at, but after, the
completion of a fuel delivery. For this purpose an OFF timer 126 is
connected to be operated by the handle 112 when it is turned to its
"off" position to operate the sequence switch 120 for a
predetermined interval, for example 30 seconds, and an ON timer 128
is provided for operating the sequence switch 120 for a
predetermined interval, for example 18 seconds, when the handle is
turned to its "on" position. Preferably, when the handle is turned
to its "on" position the OFF timer is deactivated even though the
timer has not completed its full time cycle, and when the handle is
turned to its "off" position the ON timer 128 is similarly
deactivated. Also, when the handle 112 is turned to its "on"
position, the ON timer 128 will preferably function to operate the
sequence switch 120 after the cost and volume registers 34, 36 are
fully reset to zero to provide that the indicator sequencing at the
beginning of a delivery will give zero cost and volume
readings.
The ON timer 128 at the completion of its predetermined timer
interval deenergizes the sequence switch 120 and energizes a
control lead 132 for (a) energizing the pump motor 24 and thereby
condition the system for delivering fluid and (b) activating a
manually settable selector 134 which provides for controlling the
operation of the selector switch 80 during the delivery of fuel.
The selector switch 134 is shown having "cost," "volume" and
"sequence" positions such that when the selector is in its "cost"
position as shown in FIG. 1 the "cost" lead 81 is energized during
the delivery of fuel to provide for continuously displaying the
cost amount of fuel delivered. The "volume" position provides for
continuously displaying the volume of fuel delivered and the
"sequence" position provides for energizing the sequence switch 120
to provide for displaying the cost, volume and price in sequence
during the fuel delivery. Typically the manual selector 134 would
be set at its "cost" position where a particular monetary amount of
fuel is to be delivered and would be set at its "volume" position
where a particular volumetric amount of fuel is to be delivered.
The "sequence" position could be used where no particular
volumetric or monetary amount of fuel is to be delivered and for
example when a fuel tank is to be filled.
On completion of a fuel delivery and operation of the control
handle 112 to its "off" position the OFF timer 126 as previously
indicated will temporarily energize the sequence switch 120 for a
predetermined interval. Thereafter the OFF timer 126 will provide
for energizing the "price" lead 83 to provide for displaying the
unit volume price between deliveries. A manual recycle button 140
is provided for operating the OFF timer (when the handle 112 is in
its "off" position) or ON timer 128 (when the handle 112 is in its
"on" position) through its operating cycle to flash the cost,
volume and price readouts in sequence when desired by the attendant
or the party receiving fuel.
A two-product dispensing system schematically shown in part in FIG.
2 employs a modified embodiment of the indicator system of the
present invention. The two fuel products (designated by the letter
A and B which are also used as identifying numeral suffixes to
designate the respective delivery system components) are adapted to
be dispensed by the two fuel nozzles 26A, 26B having storage
receptacles 110A, 110B which are preferably located on opposite
sides of the pump housing in a conventional manner. Corresponding
variators 32A, 32B, meters 25A, 25B, etc., are provided for each of
the fuel products.
The indicator system comprises two separate but substantially
identical indicator subsystems 190, 192 (only one subsystem 190
being fully shown in FIG. 2). The subsystems 190, 192 are generally
like the indicator system described with reference to FIG. 1 and
comprise indicating devices 194, 196 like the indicating device 96
but modified to provide indicators 202, 203 for selectively
indicating the fuel products and corresponding delivery nozzles.
The indicating devices 194, 196 are for example positioned on the
opposed front faces respectively of a gasoline pump, and a suitable
manually operable product selector 204 (preferably mounted in
association with the corresponding indicating device) is provided
for each indicator subsystem for selectively connecting the
indicator subsystem to the desired fuel product delivery system.
The manual selectors 204 may be mechanically connected as shown in
FIG. 2 such that when one of the manual selectors 204 is manually
positioned to select product A, the other selector is automatically
positioned to select product B. Also, the manual selectors 204 are
preferably interlocked with the control handles 112A and 112B so
that the selectors 204 may be repositioned only when both control
handles are in their vertical or "off" positions.
The manual selectors 204 are connected to operate a product
selector 205 such that each indicator subsystem may be selectively
connected to the handle operated controls 206--208, variator
outputs 209, 210 and motor control 211 of each product delivery
system. Where such controls and outputs 206--211 are provided by
electrical signals the product selector 205 may be a suitable
electrical switch. Alternatively the selector 205 could include
mechanical interconnections where the handle operated controls
206--208 or variator outputs 209, 210 are mechanical rather than
electrical.
The price registers 38A and 38B are preferably associated with and
form a part of the product delivery systems for registering the
established unit volume prices of the fuel products. However, the
cost and volume registers 34, 36 are preferably associated with and
form a part of the indicator subsystems.
A price selector switch 216 is provided in each indicator subsystem
for selectively connecting the price registers 38A and 38B of the
product delivery systems for operating the indicating device 194
(when the corresponding selector switch 80 is operated to provide
price information). A price control switch 220 is provided for
setting the price selector switch 216 in accordance with the
setting of the corresponding manual selector 204 to provide for
displaying the price of the selected fuel product during the
delivery of that product. Also, the product indicators 202, 203 of
the indicating device 194 are operated in accordance with the
operation of the price selector switch 216 to indicate the fuel
product and appropriate nozzle for the information being
displayed.
A suitable "memory" switch 222 is interposed in the control lead
from the manual selector 204 to the price control switch 220 to
provide for resetting the price control switch 220 only when the
control handle 112 of the selected fuel product is in its "on"
position. Consequently between fuel deliveries the control switch
220 will remain positioned in accordance with the setting of the
prior delivery until a subsequent delivery is initiated by turning
the control handle 112 of the selected fuel product to its "on"
position. Accordingly the indicator subsystem will continue to
indicate the product and product price of the prior completed
delivery when the sequence switch 120 is operated by the OFF timer
126 at the end of the delivery and at any time between deliveries
by the recycle button 140.
After the completion of the sequencing interval provided by the OFF
timer 126, the main sequence switch 120 is deactivated (as in the
embodiment of FIG. 1) and a price sequence switch 230 is energized
to operate the price selector switch 216 to sequentially display,
for example for 3 seconds each, the established unit volume prices
of the two fuel products. The price sequence switch 230 thereby
provides for continuously and sequentially displaying the two fuel
product prices during the period the subsystem is inactive (unless
the recycle button 140 is operated to obtain information respecting
the prior delivery). A control relay 234 is provided for
deenergizing the price control switch 220 when the sequencing
switch 230 is energized.
As will be apparent to persons skilled in the art, various
modifications, adaptations and variations of the foregoing specific
disclosure can be made without departing from the teachings of the
present invention.
* * * * *