U.S. patent number 3,926,291 [Application Number 05/467,088] was granted by the patent office on 1975-12-16 for coded token and acceptor.
This patent grant is currently assigned to Pan-Nova, Inc.. Invention is credited to William F. Burke, Lee T. Crowell, Robert C. Greenwood, Thomas E. Jones.
United States Patent |
3,926,291 |
Burke , et al. |
December 16, 1975 |
Coded token and acceptor
Abstract
A coded token, a token reader and a token acceptor for use with
token operated dispensers. A disk of electrical insulating material
having one or more concentric electrical conductors therein
exposing electrically conducting circles at one or both token
surfaces for contact by a reader which provides signals to an
acceptor indicating the presence and absence of interconnected
circles at predetermined radial positions. An acceptor for
indicating receipt of a properly coded token regardless of
orientation of the deposited token.
Inventors: |
Burke; William F. (Westminster,
CA), Crowell; Lee T. (Whittier, CA), Greenwood; Robert
C. (Cypress, CA), Jones; Thomas E. (Costa Mesa, CA) |
Assignee: |
Pan-Nova, Inc. (Santa Fe
Springs, CA)
|
Family
ID: |
23854292 |
Appl.
No.: |
05/467,088 |
Filed: |
May 6, 1974 |
Current U.S.
Class: |
194/213 |
Current CPC
Class: |
G07F
7/08 (20130101); G07F 1/06 (20130101) |
Current International
Class: |
G07F
1/00 (20060101); G07F 7/08 (20060101); G07F
1/06 (20060101); G07F 001/06 () |
Field of
Search: |
;194/4R,4F,4E,6,7,8 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Tollberg; Stanley H.
Attorney, Agent or Firm: Harris, Kern, Wallen &
Tinsley
Claims
We claim:
1. A coded token for token operated dispensers and the like,
comprising:
a disc of electrical insulating material having opposed
surfaces;
separate concentric and spaced circles of electrically conductive
material on at least one of said surfaces; and
an electrical conductor separate from and extending through said
insulating material and electrically connecting selected ones of
said circles.
2. A coded token as defined in claim 1 having at least one further
electrical conductor electrically connecting other selected ones of
said circles.
3. A coded token as defined in claim 1 wherein said selected
circles are on opposite ones of said opposed surfaces.
4. A coded token as defined in claim 1 wherein said selected
circles are on the same surface of said insulating material.
5. A coded token as defined in claim 1 and:
passage means defining a path for a token between an entrance slot,
a token return slot, and a token storage receptacle;
a bracket mounted at said path;
a plurality of electrical contacts carried in said bracket and
positioned in opposing relation with a gap therebetween for
movement of a token through said gap, with said contacts positioned
for engaging the token surfaces at the radial positions of said
circles; and
means for connecting said contacts to a token acceptor.
6. Apparatus as defined in claim 5 including an acceptor
having:
detector means for detecting an interconnection between each of a
plurality of radial positions on each surface of a token and each
of the other radial positions, and providing a set of detection
signals indicating such interconnections; and
decoder means having said detection signals as inputs and providing
a token accepted signal as an output for tokens having directly
interconnected circles in a predetermined configuration.
7. A reader for coded tokens in the form of disks of electrical
insulating material with one or more concentric electrical
conductors therein providing directly interconnected circles of
conducting material at one or both token surfaces, including in
combination:
passage means defining a path for a token between an entrance slot,
a token return slot, and a token storage receptacle;
a bracket mounted at said path;
a plurality of electrical contacts carried in said bracket and
positioned in opposing relation with a gap therebetween for
movement of a token through said gap, with said contacts positioned
for engaging the token surfaces at the radial positions of said
circles as a token moves through said gap; and
means for connecting said contacts to a token acceptor.
8. A reader as defined in claim 7 with contacts in corresponding
positions on each side of said gap for contacting the circles for
either of the two possible orientations of a token.
9. A reader as defined in claim 7 including detector means mounted
in said passage means for detecting the presence of a token at the
position in said path for contact of token circles by said
contacts.
10. A reader as defined in claim 9 including:
direction control means in said passage means for selectively
directing a token to said return slot and said storage receptacle;
and
acceptor means having said contacts and said detector means
connected thereto as inputs for actuating said direction control
means to direct a token to said storage receptacle when such token
has interconnected circles in a predetermined configuration.
11. Apparatus as defined in claim 7 including an acceptor
having:
detector means for detecting an interconnection between each of a
plurality of radial positions on each surface of a token and each
of the other radial positions, and providing a set of detection
signals indicating such interconnections; and
decoder means having said detection signals as inputs and providing
a token accepted signal as an output for tokens having
interconnected circles in a predetermined configuration.
12. An acceptor for coded tokens in the form of disks of electrical
insulating material with one or more concentric electrical
conductors therein providing directly interconnected circles of
conducting material at one or both token surfaces, including in
combination:
detector means for detecting a uniform and direct interconnection
between each of a plurality of radial positions on each surface of
a token and each of the other radial positions, and providing a set
of detection signals indicating such interconnections; and
decoder means having said detection signals as inputs and providing
a token accepted signal as an output for tokens having
interconnected circles in a predetermined configuration.
13. An acceptor for coded tokens in the form of disks of electrical
insulating material with one or more concentric electrical
conductors therein providing interconnected circles of conducting
material at one or both token surfaces, including in
combination:
detection means for detecting an interconnection between each of a
plurality of radial positions on each surface of a token and each
of the other radial positions, and providing a set of detection
signals indicating such interconnections; and
decoder means having said detection signals as inputs and providing
a token accepted signal as an output for tokens having
interconnected circles in a predetermined configuration;
with said detection means including means for sequentially
connecting each of said radial positions to a reference point in
sequence and sampling said radial positions for each such
sequential connection.
14. An acceptor as defined in claim 13 wherein said decoder means
includes first and second decoders, and
said detection means includes means for connecting the detection
signals from one token surface to said first decoder and the
detection signals from the other token surface to said second
decoder.
15. Apparatus as defined in claim 14 wherein said decoder means
includes first and second gate matrices each having a plurality of
gates, and
means for connecting an output from said first and second decoders
to each of said gates in a predetermined pattern whereby one of
said matrices provides a token accepted signal for a specific token
circle interconnection configuration for one of the two possible
orientations of the token and the other of said matrices provides a
token accepted signal for the other orientation.
Description
This invention relates to token operated dispensers such as
gasoline dispensers, and in particular to a new and improved coded
token, token reader and token acceptor.
Tokens have been widely used for operating various types of
dispensers and other mechanisms and most coin and token operated
mechanisms include some device for distinguishing between valid
coins or tokens and nonvalid items deposited in the mechanism. The
present invention is directed to a coded token and to an acceptor
for accepting properly coded tokens and rejecting or returning
improperly coded tokens and all other items deposited.
There is a current need for a token operated dispenser system
having a plurality of dispensers operable by identical tokens with
some means for coding the token so that only particularly coded
tokens can be used with specific dispensers. By way of example, a
chain of gasoline service stations may utilize token operated
gasoline dispensers with each station selling tokens substantially
identical to tokens of the other stations. It is desirable to have
the token reader and acceptor mechanisms as well as the dispenser
mechanisms the same in all of the stations for obvious reasons of
economy in manufacture and maintenance. At the same time, it is
desirable that tokens purchased at one station not be usable at
another station. This can be accomplished by making the tokens of
different size or weight or external configuration. However such
requires differences in the token readers and acceptors.
Accordingly, it is an object of the present invention to provide
coded tokens which can be substantially identical in appearance,
composition, size and weight and yet have different internal
electrical configurations for coding purposes. A further object is
to provide such a coded token in the customary disk shape and one
which can be inserted into a slot without regard to orientation.
The disk shaped token is round and hence is readily inserted and
subsequentially handled in the token passages. The round token is
more easily handled and stored by the company and by the customer,
is strong and durable and can be handled in the customers pocket
and in coin type handling mechanisms without fear of damage. The
token is reuseable for long periods of time without fear of damage
to the token or to the code. The token is preferably made of molded
plastic construction and various colors and color combinations are
readily obtained, which colors are throughout the token and not
subject to destruction by surface wear.
A further object of the invention is to provide a token reader and
a token acceptor for use with the coded tokens, and in particular,
to provide a token acceptor in which the code is readily changed
for accepting tokens with different codes.
The token of the invention comprises a disk of electrical
insulating material with one or more concentric electrical
conductors therein exposing circles of conducting material at one
or both surfaces, and providing an electrical path between exposed
circles. A wide variety of conductor configurations is available.
The conductor configurations normally are asymmetrical and the
token acceptor is readily set to accept a token with a particular
code when inserted with either of the two possible
orientations.
Other objects, advantages, features and results will more fully
appear in the course of the following description. The drawings
merely show and the description merely describes preferred
embodiments of the present invention which are given by way of
illustrations or example.
In the drawings:
FIG. 1 is an isometric view of a coded token incorporating the
presently preferred embodiment of the invention;
FIG. 2 is a view similar to that of FIG. 1 showing the opposite
surface of the token;
FIG. 3 is a sectional view taken along the line 3--3 of FIG. 1;
FIGS. 4 through 9 are views similar to that of FIG. 3 showing
alternative coding configurations;
FIG. 10 is a sectional view through a token passage illustrating
the token of FIG. 1 in a reader;
FIG. 11 is a sectional view taken along the line 11--11 of FIG.
10;
FIG. 12 is a view of the token of FIG. 11 with the reverse
orientation;
FIG. 13 is an electrical schematic of a token acceptor
incorporating the presently preferred embodiment of the invention;
and
FIGS. 14 and 15 are tables illustrating the detection signals
obtained in the acceptor of FIG. 13 for the token in the reader
configurations of FIGS. 11 and 12, respectively.
The coded token of FIGS. 1-3 comprises a disk 20 of electrical
insulating material, typically a molded plastic, and concentric
electrical conductors 21, 22, 23 positioned within the disk. The
conductor 21 provides a circle 26 at one surface of the disk 20 and
another circle 27 at the opposite surface. The conductor 22
provides the circles 28, 29, and the conductor 23 provides the
circles 30 and 31.
The conductors 21, 22, 23 preferably are metal stampings molded in
place in the disk and may have a plurality of openings therethrough
for material flow during the molding operation. In an alternative
configuration, the circles 26-31 may be positioned at the surfaces
of the disk and interconnected by wires or straps.
The conductor configuration in the disk is varied to change the
code, and a number of differently coded tokens are illustrated in
FIGS. 4-9. There are four potential radial positions for the
conducting circles at each surface of the tokens illustrated in
FIGS. 1-9; however, it is readily understood that fewer or more
radial positions can be utilized, depending upon the number of code
combinations desired.
FIGS. 10-12 illustrate the token of FIGS. 1-3 in a token reader.
The token 40 may be deposited in a slot at the inlet of a chute 41
and moves past a reader 42, typically under the influence of
gravity. The token path defined by the chute is forked, with one
portion 43 leading to a token return 44 and with another portion 45
leading to a token storage tray 46. A deflector arm 47 may be
spring loaded to the position shown in FIG. 10 for token return,
and moved to the dash line position by a solenoid 48 for directing
an accepted token with the predetermined code to the storage tray
46.
The reader 42 has eight spring wiper contacts designated by the
numerals 1 through 8 carried in a U-shaped bracket 50 mounted on
the chute 41. As the token passes along the chute, the wiper
contacts engage the conducting circles on the surfaces of the
token. In the token orientation illustrated in FIG. 11, the token
conductor 21 provides an electrical conductive path between the
contacts 4 and 6, with the other electrical paths as illustrated in
FIG. 11. If the token is deposited with the opposite orientation,
the conductive paths between the wiper contacts will be as
illustrated in FIG. 12.
Means are provided in the chute 41 for indicating when a token is
in position at the reader 42. Typically this may be an optical or
mechanical switch 52 mounted in the chute 41 at the position
indicated in FIG. 10 so that the switch is actuated by interrupting
a light beam or deflecting a lever when a token is aligned with the
contacts of the reader.
An acceptor circuit for receiving signals from the reader 42 and
operating the solenoid 48 to direct a token to the token storage
tray 46 when the token is appropriately coded, is illustrated in
FIG. 13. The wiper contacts 1-4 of reader 42 are connected through
resistors 55 to a plus voltage and through diodes 56 and buffer
inverter amplifiers 57 to a decade counter 58, and to the inputs of
a decoder 59. The wiper contacts 5-8 are similarly connected to the
decade counter 58 and to a decoder 60.
When a token is in the chute in position to be decoded, the token
ready switch 52 operates and clocks the token latch 62, a D
flip-flop. The decade counter 58 is enabled at CE by the low
condition of the token latch Q output. The decade counter 58 will
now clock at a rate determined by the frequency of the oscillator
63.
The 1 output of the decade counter 58 will go high when the first
oscillator clock goes high following the low CE signal. The token
wiper contact 1 will now go low via the buffer inverter and
blocking diode. With a token in the reader as shown in FIG. 11
wiper contact 7 will also go low through the conductor 23. The low
signal at wiper contact 1 will provide a low signal at output 14 of
decoder 59, and the low signal wiper contact 7 will provide a low
signal at output 11 of decoder 60. For acceptance of this specific
code, the input A of nor gate 1 of the gate matrix sequence 1 will
be connected to decoder 59 output 14 and input B will be connected
to decoder 60 output 11. This will cause the flip-flop associated
with the sequence 1 gate 1 to clock to its set state.
The second oscillator clock causes the decade counter 58 output 1
to go low and the output 2 to go high. This places the low signal
on wiper contact 2, and hence on contact 3 via token conductor 22.
Output 9 of decoder 59 and output 15 of decoder 60 will go low, and
these particular outputs would be connected to the A and B inputs
respectively of the sequence 1 gate 2. Since the sequence 1 gate 1
flip-flop is set, the D input of the flip-flop for gate 2 is high,
allowing the flip-flop to set.
The decade counter is similarly sequenced through outputs 3 through
8, with output 9 providing an input to reset delay 65.
If all eight output pulses of the decade counter result in correct
decoding, the Q output of sequence 1 gate 8 flip-flop will go low,
resulting in a high signal at token accepted latch 66 through nand
gate 67. The ninth or reset oscillator clock will cause the latch
66 to set and energize the solenoid 48 through inverter 68 and an
amplifier stage 69. At the same time, the token latch 62 is reset
and the decade counter 58 is held at 9. The reset delay 65 is also
enabled and after a period of time determined by the
resistor-capacitor networks 72, the Qb output of reset delay 65
will go high, clearing the decade counter 58 and the flip-flops of
the gate matrices of sequence 1 and sequence 2, and releasing the
solenoid 48.
If a token having some other conductor code is inserted into the
acceptor connected as described above, the solenoid will not be
energized and the token will pass to the token return tray. If the
token of FIG. 11 is inserted in the reverse orientation, as shown
in FIG. 12, it will be accepted by making the appropriate
connections between the group A decoder 59 and group B decoder 60,
and the gates of sequence 2. Hence it is seen that the acceptor
will accept a properly coded token for either orientation and will
reject or not accept all other tokens. The coding of any particular
acceptor is readily changed by changing the interconnections
between the outputs of the decoders 59, 60 and the inputs of the
gates of the sequence 1 and 2 gate matrices.
As described above, token decoding is accomplished by placing a
zero voltage on each of the normally positive wiper contacts 1-8
sequentially, and at each step in the sequence examining the
potential on all eight contacts. The wiper contacts 1-4 are read by
the binary-to-decimal decoder 59 which produces a single zero
output of decimal equivalent to the binary input. The decoder 60
provides a similar decoding function for wiper contacts 5-8. The
group A and group B decimal equivalents produced by decoding the
binary signals obtained when sequencing through the eight wipers
for the token in the position of FIG. 11 is shown in the chart of
FIG. 14. The chart of FIG. 15 provides the same information for the
token when inserted in the reversed position of FIG. 12.
The acceptor could readily be expanded to accept additional codes
by including additional gate matrices. If distinctions are to be
drawn between acceptable but differently coded tokens, additional
token accepted latches and solenoids can be used to direct the
tokens along the appropriate paths. In another alternative
configuration, one set of gate matrices may be used to accept a
token having one value, such as one gallon or one dollar, and
another set of gate matrices may be used to accept a similar token
having another value such as $5.00 or 5 gallons. A separate token
accepted latch may be used for each set of gate matrices, with both
operating the same solenoid for accepting the token, but with the
latches providing different signals to the dispenser indicating the
different values of the two tokens.
* * * * *