| United States Patent |
5,905,461
|
|
Neher
|
May 18, 1999
|
Global positioning satellite tracking device
Abstract
A global positioning and tracking system for locating one of a person and
item of property. The global positioning and tracking system comprises at
least one tracking device for connection to the one of the person and item
of property including a processing device for determining a location of
the tracking device and generating a position signal and a transmitter for
transmitting said position signal. The position signal is transmitted to a
relay station strategically positioned about a desired monitoring area.
The relay station includes a device for receiving the positional signal
and determining if the received position signal is a valid signal and a
device for relaying the position signal upon determining the position
signal is valid to a central monitoring station. The central monitoring
station receives the validated positional signal from the relay station
and analyzes the position signal for monitoring the position of the
tracking device. The system may also include a tracking satellite for
receiving the validated position signal from the relay station and
re-transmitting the position signal to the central monitoring station when
the central monitoring station is located outside the transmission range
of the relay station.
| Inventors:
|
Neher; Timothy J (411 Hobron La. no. 3204, Honolulu, HI 96815)
|
| Appl. No.:
|
986821 |
| Filed:
|
December 8, 1997 |
| Current U.S. Class: |
342/357.07; 701/213 |
| Intern'l Class: |
H04B 7/1/85 |
| Field of Search: |
315/357
701/213
|
References Cited [Referenced By]
U.S. Patent Documents
| 5576952 | Nov., 1996 | Stutman et al. | 128/670.
|
| 5734981 | Mar., 1998 | Kennedy, III et al. | 455/445.
|
| 5742233 | Apr., 1998 | Hoffman et al. | 340/573.
|
| 5748148 | May., 1998 | Heiser et al. | 342/457.
|
Primary Examiner: Blum; Theodore M.
Attorney, Agent or Firm: Kroll; Michael I.
Claims
What is claimed is new and desired to be protected by letters patent is set
forth in the appended claims:
1. A global positioning and tracking system for locating a person, said
global positioning and tracking system comprising:
a) a tracking device for connection to said person including a processing
device for determining a location of the tracking device and generating a
position signal and a transmitter for transmitting said position signal;
b) at least one relay station strategically positioned about a desired
monitoring area including means for receiving said position signal and
determining if said received position signal is a valid signal and means
for relaying said position signal upon determining said position signal is
valid;
c) central monitoring station for receiving said validated position signal
from said at least one relay station and analyzing said position signal
for monitoring a position of said tracking device;
d) said tracking device being mounted within a decorative face plate
forming part of a wrist band, first and second bands of rigid inflexible
material extending from opposite sides of said face plate forming a loop
for surrounding the wrist of a user, the free end of one band includes a
pair of prong shafts for locking the two bands together, one of said bands
having a hinged section extending from the free end thereof; and
e) said decorative face plate having embedded therein said processing
device, a transmission wire extending from one end of said face plate
through said first and second bands to the opposite end of said face plate
for completing the circuit in said processing device so that when said
first and second bands are apart said tracking unit is nonfunctional and
when said first and second bands are engaged said tracking unit is
functional, and said wrist band including the decorative face plate and
bands being free of any electronic display said device lacking any visible
indication of its function.
2. The global positioning and tracking system as recited in claim 1,
wherein said at least one relay station is able to transmit said validated
position signal over a predetermined range and said system further
comprises a tracking satellite for receiving said validated position
signal from said at least one relay station and re-transmitting said
position signal to said central monitoring station when said central
monitoring station is located outside the transmission range of said at
least one relay station.
3. The global positioning and tracking system as recited in claim 2,
wherein said at least one relay station comprises a plurality of relay
stations strategically positioned about said desired monitoring.
4. The global positioning and tracking system as recited in claim 3,
wherein said system further comprises a plurality of tracking devices.
5. The global positioning and tracking system as recited in claim 4,
wherein each of said plurality of tracking devices is in the form of a
wristband for connection about a persons wrist.
6. The global positioning and tracking system as recited in claim 5,
wherein said plurality of tracking devices each include a unique
identification signal, said identification signal being transmitted to
said plurality of relay stations with said position signal.
7. The global positioning and tracking system as recited in claim 6,
wherein said plurality of relay stations each include a data base for
storing identification codes of all of said plurality of tracking devices,
said identification codes received from said plurality of tracking devices
being compared to said identification codes stored in said data base for
determining if the received position signal is valid.
8. The global positioning and tracking system as recited in claim 7,
wherein said plurality of tracking devices each further include a memory
for storing said unique identification code.
9. The global positioning and tracking system as recited in claim 8,
wherein each of said plurality of tracking devices include a means for
generating a distress signal for transmission to said central monitoring
unit upon activation.
10. The global positioning and tracking system as recited in claim 9,
wherein each of said plurality of tracking devices further include a
switch for activating said means for generating a distress signal.
11. The global positioning and tracking system as recited in claim 9,
wherein said means for generating a distress signal is activated when said
tracking device is cut open.
12. The global positioning and tracking system as recited in claim 9,
wherein said desired monitoring area is the entire earth.
13. The method of tracking continuously the location of a child utilizing a
global positioning and tracking system comprising the steps of:
a) placing a wrist band containing a tracking device on the wrist of said
child which is lacking of any visible indication of its function, said
tracking device including a processing device for determining the location
of the tracking device and generating a position signal and a transmitter
for transmitting said position signal;
b) strategically positioning a relay station about a desired monitoring
area including means for receiving said position signal and determining if
said received position signal is a valid signal and means for relaying
said position signal upon determining said position signal is valid;
c) establishing a tracking satellite for receiving the validated position
signal from said tracking device and retransmitting said position signal;
c) establishing a central monitoring station for receiving said validated
position signal from said relay station or said tracking satellite and
analyzing said position signal for monitoring the position of said
tracking device;
d) said wrist band comprising a decorative face plate, first and second
bands of rigid inflexible material extending from opposite sides of said
face plate forming a loop for surrounding the wrist of a user, the free
end of one band includes a pair of prong shafts for locking the two bands
together, one of said bands having a hinged section extending from the
free end thereof; and
e) said decorative face plate having embedded therein said processing
device, a transmission wire extending from one end of said face plate
through said first and second bands to the opposite end of said face plate
for completing the circuit in said processing device so that when said
first and second bands are apart said tracking unit is nonfunctional and
when said first and second bands are engaged said tracking unit is
functional.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to tracking systems and, more
specifically, to a global positioning tracking system for locating the
position of a person or item anywhere at anytime.
2. Description of the Prior Art
Numerous tracking systems have been provided in the prior art. For example,
U.S. Pat. Nos. 5,289,163; 5,461,365; 5,461,390; 5,617,074 and 5,627,548
all are illustrative of such prior art While these units may be suitable
for the particular purpose to which they address, they would not be as
suitable for the purposes of the present invention as heretofore
described.
A child position monitoring device monitors the position of a child by
detecting the signal strength of a radio frequency carrier from a
transmitter attached to the child. If the signal of the radio frequency
carrier is too weak, the child is to far away from the adult who has the
child position monitoring device. When this happens, the adult is informed
that the child has wandered too far away through the use of an audio tone
or through the use of vibrations coming from the device. Once the adult is
notified that the child is too far away, the device also has a locating
display for indicating the relative direction of the child with respect to
the adult The display uses eight LEDs arranged around an emblem used to
represent the position of the adult. The LED which lights up indicates the
relative direction of the child.
A personal alarm system includes a monitoring base station and one or more
remote sensing units in two-way radio communication. An electronic
handshake between the base station and each remote unit is used to assure
system reliability. The remote units transmit at selectable power levels.
In the absence of an emergency, a remote unit transmits at a
power-conserving low power level. Received field strength is measured to
determine whether a remote unit has moved beyond a predetermined distance
from the base station. If the distance is exceeded, the remote unit
transmits at a higher power level. The remote unit includes sensors for
common hazards including water immersion, smoke, excessive heat, excessive
carbon monoxide concentration, and electrical shock. The base station
periodically polls the remote units and displays the status of the
environmental sensors. The system is useful in child monitoring, for use
with invalids, and with employees involved in activities which expose them
to environmental risk. Alternative embodiments include a panic button on
the remote unit for summoning help, and an audible beacon on the remote
unit which can be activated from the base station and useful for locating
strayed children. In another embodiment, the remote unit includes a Global
Positioning System receiver providing location information for display by
the base station.
A locator device for monitoring the location of subjects, usable in
conjunction with a database system causes a polling signal to be sent
periodically to each of the subject's locator devices in the area. The
locator device includes a wireless transceiver to receive the polling
message and, in response, query a location determination device for the
current location of the device. This location is then sent back through
the wireless network to the database. The database determines from a
record on that particular subject where that subject is supposed to be at
that time. If the subject being monitored is not within the area where he
or she is supposed to be, then the database may automatically contact law
enforcement officials.
A child finder basically consists of a transmitter which is concealingly
attachable to a child's body and which sends a signal to a conventional
receiver so that the child's location can be continually monitored. The
transmitter will typically be carried in an article of jewelry, such as a
watch, bracelet, ring, or the like, and will use a special on/off switch
which allows the transmitter to be activated only when the jewelry is
being worn by the child. The switch includes a reciprocal push button
which closes the transmitter's electrical circuit when depressed, and the
button is spring-biasedly moved away from electrical contact with the
transmitter's circuit when the article of jewelry is not being worn. To
protect against inadvertent partial movement of the button which could
break electrical contact thus deactivating the transmitter an electrical
contact surface of the button is provided with an upwardly extending
electrically conductive spring finger which maintains continual electrical
contact irrespective of temporary and inadvertent reciprocal movement of
the spring finger recedes into a provided groove on the electrical contact
surface of the button so as to prevent the finger from causing
interference between the primary electrical contact surfaces.
A navigation wrist wear device comprises a GPS receiver fully disposed in a
wrist watch type housing. A transparent microwave patch antenna is
patterned of indium-tin-oxide on sapphire in front of an LCD time,
position and velocity display. A bezel provides a protective window. A
low-noise amplifier, down conversion, code processing and navigation
processing are all provided on a single integrated circuit Photovoltaic
solar cells to each side of the LCD help keep a battery charged.
SUMMARY OF THE PRESENT INVENTION
The present invention relates generally to tracking systems and, more
specifically, to a global positioning tracking system for locating the
position of a person or item anywhere at anytime.
A primary object of the present invention is to provide a global
positioning and tracking system that will overcome the shortcomings of
prior art devices.
Another object of the present invention is to provide a global positioning
and tracking system which is able to locate individuals and personal
property anywhere around the world.
An additional object of the present invention is to provide a global
positioning and tracking system including a transmitter/receiver for
attachment around an individuals wrist or ankle or to an item of personal
property.
A still further object of the present invention is to provide a global
positioning and tracking system that is operable in both a normal and
standby mode.
An even further object of the present invention is to provide a global
positioning and tracking system including a remote transmitter/receiver
within a band made of an uncuttable material.
A still further object of the present invention is to provide a global
positioning and tracking system including a band having an identification
code unique to the particular band.
A yet further object of the present invention is to provide a global
positioning and tracking system including an emergency activation button
for alerting a main station as to the existence of an location of an
emergency situation.
Another object of the present invention is to provide a global positioning
and tracking system that is simple and easy to use.
A still further object of the present invention is to provide a global
positioning and tracking system that is economical in cost to manufacture.
Additional objects of the present invention will appear as the description
proceeds.
A global positioning and tracking system for locating one of a person and
item of property is described by the present invention. The global
positioning and tracking system comprises at least one tracking device for
connection to the one of the person and item of property including a
processing device for determining a location of the tracking device and
generating a position signal and a transmitter for transmitting said
position signal. The position signal is transmitted to a relay station
strategically positioned about a desired monitoring area. The relay
station includes a device for receiving the positional signal and
determining if the received position signal is a valid signal and a device
for relaying the position signal upon determining the position signal is
valid to a central monitoring station. The central monitoring station
receives the validated positional signal from the relay station and
analyzes the position signal for monitoring the position of the tracking
device. The system may also include a tracking satellite for receiving the
validated position signal from the relay station and re-transmitting the
position signal to the central monitoring station when the central
monitoring station is located outside the transmission range of the relay
station.
To the accomplishment of the above and related objects, this invention may
be embodied in the form illustrated in the accompanying drawings,
attention being called to the fact, however, that the drawings are
illustrative only, and that changes may be made in the specific
construction illustrated and described within the scope of the appended
claims.
BRIEF DESCRIPTION OF THE DRAWING FIGURES
Various other objects, features and attendant advantages of the present
invention will become more fully appreciated as the same becomes better
understood when considered in conjunction with the accompanying drawings,
in which like reference characters designate the same or similar parts
throughout the several views.
FIG. 1 is a perspective view of the global positioning and tracking system
of the present invention used for tracking the location of a child;
FIG. 2 is a perspective top view of a wristband used with the global
positioning and tracking system of the present invention worn by a user
whose position is to be tracked;
FIG. 3 is a perspective top view of a wristband used with the global
positioning and tracking system of the present invention, the wrist band
being in an unlocked position;
FIG. 4 is a perspective side view of the wristband used with the global
positioning and tracking system of the present invention;
FIG. 5 is a perspective side cross-sectional view of a wristband used with
the global positioning and tracking system of the present invention;
FIG. 6 is a schematic block diagram of the wristband used with the global
positioning and tracking system of the present invention; and
FIG. 7 is a flow chart describing the operating method of the global
positioning and tracking system of the present invention.
DESCRIPTION OF THE REFERENCED NUMERALS
Turning now descriptively to the drawings, in which similar reference
characters denote similar elements throughout the several views, the
Figures illustrate global positioning and tracking system of the present
invention. With regard to the reference numerals used, the following
numbering is used throughout the various drawing figures.
10 global positioning and tracking system of the present invention
12 central monitoring station of the global positioning and tracking system
of the present invention
14 tracking satellite of the global positioning and tracking system of the
present invention
16 local transmitter/receiver station of the global positioning and
tracking system of the present invention
18 wristband/tracking unit of the global positioning and tracking system of
the present invention
20 child wearing tracking device of the global positioning and tracking
system of the present invention
22 guardian of child
24 line indicating transmission of location signal between tracking unit
and relay station
26 line indicating transmission of location signal between relay station
and tracking satellite
28 line indicating transmission of location signal between relay station
and central monitoring station
30 line indicating transmission of location signal between tracking
satellite and central monitoring station
32 wrist of user wearing tracking unit
34 smooth outer surface of tracking unit
36 face plate of tracking unit for engraving decorative or identification
information thereon
38 locking mechanism
40 first shaft within first side of tracking unit
42 second shaft within first side of tracking unit
44 first side of tracking unit
46 second side of tracking unit
48 first prong extending from second side of tracking unit
50 second prong extending from second side of tracking unit
52 teeth on first prong
54 teeth on second prong
56 slide switch for transmitting distress signal
58 first position of slide switch
60 second position of slide switch
62 hinge
64 inner side of tracking unit
66 logic circuit within inner side of tracking unit
68 band of the tracking unit
70 transmission wire
72 first section of transmission wire
74 second section of transmission wire
76 first end of first section of transmission wire
78 second end of first section of transmission wire
80 first end of second section of transmission wire
82 second end of second section of transmission wire
84 microprocessor/logic device
86 power supply
88 memory
90 programmable EPROM
92 GPS logic circuit
94 input port connector
96 transmitter
98 emergency button
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Turning now descriptively to the drawings, in which similar reference
characters denote similar elements throughout the several views, FIGS. 1
through 6 illustrate the global positioning and tracking system of the
present invention indicated generally by the numeral 10.
The global positioning and tracking system 10 is illustrated in FIG. 1 and
includes a central monitoring station 12, a tracking satellite 14, a local
relay station 16 and a wristband/tracking unit 18. The central monitoring
station 12 monitors all movements of an activated tracking unit 18. The
tracking unit 18 is attached to an item of personal property or to an
individual such as a child 20 as illustrated in FIG. 1. The child 20 in
the figure is being watched by a guardian 22 and being tracked by the
global positioning and tracking system 10. When the tracking unit 18 is
activated by the user 20 or the guardian 22 of the person or item being
tracked, the tracking unit 18 will transmit a both an identification
signal and a location signal to a nearby relay station 16 as is indicated
by the line labeled 24. The location signal 24 may also include an
identification code for the tracking unit 18 which will be compared to a
data base of valid identification codes indicative of all possible
tracking units at the relay station 16. If the location signal 24 is
determined to be valid, the relay station 16 will transmit the received
signal to either the tracking satellite 14 as indicated by the line
labeled 26 or to a central monitoring station 12 as indicated by the line
labeled 28. The location signal will be transmitted directly to the
central monitoring station 12 if the relay station 16 is located within a
predetermined distance from the central monitoring station 12. If the
location signal is transmitted to the tracking satellite 14, the tracking
satellite 14 will relay the signal to the central monitoring station 12 as
is indicated by the line labeled 30. The signal received at the central
monitoring unit 12 is then monitored to keep track of the position of the
tracking unit 18 anywhere in the world. The extent of usefulness of the
system 10 is based upon the range within which the tracking units 18 can
transmit signals and the number of relay stations 16 positioned throughout
the world to cover all areas in which a tracking unit 18 may be located.
An exemplary embodiment of a tracking unit 18 is illustrated in FIGS. 2-5.
FIG. 2 illustrates the tracking unit 18 connected about the wrist 32 of a
user 20. The tracking unit 18 includes an outer surface 34 having a smooth
texture. The tracking unit 18 may also include a face plate 36 which may
be engraved with a child's name, a decoration to detract from the purpose
of the device providing an ornamental feature to the device or even any
other type of identification code. The tracking unit 18 is preferably made
of an uncuttable material so that it is difficult or even impossible to
remove without the proper unlocking mechanism. Thus, the tracking unit 18
can be used without worry for tracking the location of a child, a prisoner
or inmate out on a work release program or furlough, senior citizens in
need of medical care, personal property or even athletes such as hikers or
mountain climbers moving through dangerous areas.
FIG. 3 illustrates an exemplary locking mechanism 38 for use with the
tracking device 18 for connecting about the wrist 32 of the user 20. The
locking mechanism 38 includes first and second prong shafts 40 and 42,
respectively, on a first side 44 of the tracking unit 18. Extending from a
second side 46 of the tracking unit 18 are first and second prongs 48 and
50, respectively. The first and second prongs 48 and 50 each include a top
side having teeth 52 and 54 extending along a length thereof. In order to
lock the tracking device 18 around a wrist 32 of the user 20, the first
and second prongs 48 and 50 are inserted into respective ones of the first
and second shafts 40 and 42. The teeth 52 and 54 on each of the prongs 48
and 50 releasably engage with the inner side of the respective shafts 40
and 42 for locking the tracking unit 18 closed. The locking mechanism 38
may be provided with a variety of possible locking mechanisms such as
keys, combination locks, electronic locks, etc. to prevent the tracking
device from being detached from the item or person once attached.
FIG. 4 illustrates the tracking unit 18 in an unattached condition, not
connected to a user or item of personal property. This view illustrates a
slide switch 56 for initiating transmission of a distress signal to the
relay station 16 on a side of the unit 18. The slide switch 56 is movable
between a first position 58 in which the distress signal is not
transmitted and a second position 60 in which the tracking unit 18 is
activated for transmitting the distress signal. The distress signal will
be continuously transmitted until the user or another person moves the
slide switch 56 back to the first position 58. The slide switch 56 must
over come a frictional force to move between the first and second
positions 58 and 60 and thus will not be unconsciously or unintentionally
activated to transmit the distress signal. Also seen from this figure is a
hinge 62. As the tracking unit 18 is made of a somewhat rigid inflexible
material, the hinge 62 allows the first and second sides 44 and 46 to be
separated when the tracking device 18 is either being placed about the
wrist of the user or being removed therefrom.
A cross-sectional view of the tracking unit 18 is illustrated in FIG. 5.
Within an interior 64 of the tracking unit 18 is a logic circuit 66.
Extending within a band 68 of the tracking unit 18 is a transmission wire
70. The transmission wire 70 is formed of first and second sections 72 and
74 respectively. The first section 72 includes a first end 76 connected to
the logic circuit 66 and a second end 78 extending to the second end 46 of
the tracking unit 18. The second section 74 includes a first end 80
connected to the logic circuit 66 and a second end 82 extending to the
first end 44 of the tracking unit 18. When the locking mechanism 38 is
closed joining the first and second sides 44 and 46, the first and second
sections 72 and 74 of the transmission wire are connected to complete a
full circuit with the logic circuit 66. When the circuit is broken such as
if the band 68 is cut or the locking mechanism 38 is broken to release the
tracking unit 18 from its position, the tracking unit 18 will
automatically transmit the distress signal to alert the central monitoring
station 12 as to the present situation.
A schematic block diagram of the tracking unit 18 of the global positioning
and tracking system 10 is shown in FIG. 6. As is clearly shown in this
figure the tracking unit 18 includes a microprocessor/logic device 84. The
microprocessor/logic device 84 is connected to receive operating power
from a power supply 86. The power supply 86 may be any type of battery
which is small enough to fit within the inner side 70 of the tracking
device 18 or may even be a solar powered battery for powering the logic
circuit Also connected to the microprocessor/logic device 84 is a memory
unit 88 for storing the identification number and distress signal
information, a programmable EPROM 90 for storing the operating software
for the microprocessor/logic device 84 and a Global Positioning Satellite
(GPS) logic circuit 92 for use in calculating the longitudinal,
latitudinal and elevational position of the tracking unit 18 for
transmission to the microprocessor/logic device 84 and ultimate
transmission to the central monitoring station 12. An input port connector
94 is connected to the microprocessor/logic device 84 for use in inputting
the identification information for storage in the memory 88. A transmitter
96 is connected to the microprocessor/logic device 84 for transmission of
the identification information, GPS information and distress signals to
the relay station 16 for ultimate transmission to the central monitoring
station 12. An emergency button (slide switch) 98 is also connected to
initiate transmission of the distress signal when activated or when the
band of the tracking unit is cut or the lock is opened without proper
authorization.
The operation of the global positioning and tracking system 10 will now be
described with reference to the figures and specifically to the flow chart
of FIG. 7. In operation, the tracking unit 18 is programmed with an
identification code or number unique to the particular unit either upon
manufacturing or using an external programming device connected to the
input port connector as described in step S2. The tracking unit 18 is then
assigned a specific frequency range at which it may transmit the
identification signal along with any distress signals and location
information as stated in step S4. The frequency is determined based upon
the specific use of the particular tracking unit 18 such as for law
enforcement, personal security companies, child protection or locating
personal property and the particular frequency range at which the relay
stations are set for receiving transmitted signals. The tracking unit 18
may also be programmed with a subscriber ID number, each specific
subscriber number providing particular service to the individual devices
as discussed in step S6. This allows users to find tracking devices that
would suit their personal intended uses.
The tracking device is now ready for operation and is connected to the
particular individual or piece of personal property to be tracked as
described in step S8. This is done by locking the tracking unit 18 to
complete the circuit extending therethrough. The tracking unit 18 will
then begin transmitting an identification signal once the locking
mechanism is engaged as stated in step S10. The longitudinal, latitudinal
and elevational position of the tracking unit is continually calculated by
the GPS logic circuit upon engagement of the locking mechanism as
discussed in step S12. The tracking unit 18 continually transmits the
positional signal and identification signal to the relay station 16 as
stated in step S14. The relay station 16 then enhances the received signal
and relays the transmitted positional and identification signals to the
tracking satellite 14 as discussed in step S16. The tracking satellite
then retransmits the enhanced positional and identification signals to the
central monitoring station 12 as described in step S18. If it is detected
that the band of the tracking device has been cut to open the circuit or
the emergency button has been activated, the tracking unit 18 will
automatically transmit a distress signal in the same manner as described
above and stated in step S20.
From the above description it can be seen that the global positioning and
tracking system of the present invention is able to overcome the
shortcomings of prior art devices by providing a global positioning and
tracking system which is able to locate individuals and personal property
anywhere around the world. The global positioning and tracking system
including a transmitter/receiver for attachment around an individuals
wrist or ankle which is operable in both a normal and standby mode and
contained within a band made of an uncuttable material. Each band of the
global positioning and tracking system has an identification code unique
to the particular band for identification and location purposes and an
emergency button for transmitting a distress signal when the wearer is in
need. Furthermore, the global positioning and tracking system of the
present invention is simple and easy to use and economical in cost to
manufacture.
It will be understood that each of the elements described above, or two or
more together may also find a useful application in other types of methods
differing from the type described above.
While certain novel features of this invention have been shown and
described and are pointed out in the annexed claims, it is not intended to
be limited to the details above, since it will be understood that various
omissions, modifications, substitutions and changes in the forms and
details of the device illustrated and in its operation can be made by
those skilled in the art without departing in any way from the spirit of
the present invention.
Without further analysis, the foregoing will so fully reveal the gist of
the present invention that others can, by applying current knowledge,
readily adapt it for various applications without omitting features that,
from the standpoint of prior art, fairly constitute essential
characteristics of the generic or specific aspects of this invention.
* * * * *