U.S. patent number 3,603,403 [Application Number 04/851,624] was granted by the patent office on 1971-09-07 for automatic fire extinguishing apparatus.
This patent grant is currently assigned to Lewis Engineering Company. Invention is credited to Elwood R. Horwinski.
United States Patent |
3,603,403 |
Horwinski |
September 7, 1971 |
AUTOMATIC FIRE EXTINGUISHING APPARATUS
Abstract
Automatic Fire Extinguishing Apparatus which is independent of
commercial utilities such as water supply, electrical service and
the like, comprising a local pressurized source of extinguishing
fluid and a plurality of flexible distribution hoses having sets of
nozzles, said hoses also having detecting electrical conductors
which respond to heat and which are connected to responsive power
equipment controlling valves for releasing the extinguishing fluid
under conditions of fire. The conductors and responsive power
equipment include heat insulation providing a special delay action
by which normal changes in ambient temperature have no effect
whereas a quick rise in ambient temperature causes quick response
of the extinguisher.
Inventors: |
Horwinski; Elwood R. (Chesire,
CT) |
Assignee: |
Lewis Engineering Company
(Naugatuck, CT)
|
Family
ID: |
25311230 |
Appl.
No.: |
04/851,624 |
Filed: |
August 20, 1969 |
Current U.S.
Class: |
169/5; 174/47;
392/472 |
Current CPC
Class: |
A62C
35/605 (20130101) |
Current International
Class: |
A62C
35/60 (20060101); A62C 35/58 (20060101); A62c
035/00 () |
Field of
Search: |
;169/1,2,5,16,19,23,27,42,1B
;138/111,104,33,127,132,133,138,149 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
489,489 |
|
Jul 1938 |
|
GB |
|
936,302 |
|
Sep 1963 |
|
GB |
|
Primary Examiner: Wood, Jr.; M. Henson
Assistant Examiner: Grant; Edwin D.
Claims
I claim:
1. A combined fire detector and extinguisher hose comprising, in
combination:
a. a hose line adapted to carry an extinguishing fluid,
b. a wire wrap surrounding said hose line,
c. said wrap comprising a plurality of electrical conductors
insulated from each other,
d. one of said conductors having a high and significant temperature
coefficient of resistance greater than copper, thereby adapting it
for use as a temperature-responsive sensor.
2. A combined fire detector and extinguisher hose comprising, in
combination:
a. a hose line adapted to carry an extinguishing fluid,
b. a wire wrap surrounding said hose line,
c. said wrap comprising a plurality of electrical conductors
insulated from each other,
d. one of said conductors having a high and significant temperature
coefficient of resistance greater than copper, thereby adapting it
for use as a temperature-responsive sensor,
e. a plurality of nozzles connected in said hose line to receive
extinguishing fluid therefrom and to discharge the same to the
surrounding area,
f. said nozzles having orifices sufficiently small to enable a
discharging liquid to become frozen in it at temperatures caused by
evaporation in a range considerably below ambient.
3. A hose as in claim 2, and further including:
a. a separable hose connector fitting carrying one of said nozzles
and detachably connecting the same to separate lengths of said hose
line, and
b. separable electrical connector fittings for detachably
connecting the conductors of said lengths at a location adjacent
said one hose connector fitting.
4. A combined fire detector and extinguisher hose comprising, in
combination:
a. a hose line adapted to carry an extinguishing fluid,
b. a wire wrap surrounding said hose line,
c. said wrap comprising a plurality of electrical conductors
insulated from each other,
d. one of said conductors having a high and significant temperature
coefficient of resistance greater than copper thereby adapting it
for use as a temperature-responsive sensor,
e. two of the conductors of high temperature coefficient of
resistance have different responses to changes in ambient
temperature,
f. one of said two conductors having heat insulation surrounding it
to render it relatively poorly responsive to surrounding heat
and
g. the other of said two conductors being relatively readily
responsive to surrounding heat.
5. A hose as in claim 4, wherein:
a. said other conductor of high temperature coefficient of
resistance surrounds the said one conductor in spaced relation
thereto.
6. A hose as in claim 5, wherein:
a. the hose line comprises a spiral-wound flexible metal conduit
having a helical external groove,
b. said one conductor of high temperature coefficient of resistance
having an insulating jacket and being wound in said external
groove,
c. a spiral wrap of insulation surrounding said metal conduit and
one conductor,
d. said other conductor of high temperature coefficient of
resistance being wound around and external to said spiral wrap.
7. A combined fire detector and extinguisher hose comprising in
combination:
a. a hose line adapted to carry an extinguishing fluid,
b. a wire wrap surrounding said hose line,
c. said wrap comprising a plurality of electrical conductors
insulated from each other,
d. one of said conductors having a high and significant temperature
coefficient of resistance greater than copper, thereby adapting it
for use as a temperature-responsive sensor,
e. the conductors of high temperature coefficient comprise
nickel,
f. other conductors of said sheath being constituted of low-melting
point metal.
8. A hose as in claim 7, wherein:
a. two of the conductors of high temperature coefficient of
resistance have different responses to changes in ambient
temperature,
b. one of said two conductors having heat insulation surrounding it
to render it relatively poorly responsive to surrounding heat
and
c. the other of said two conductors being relatively readily
responsive to surrounding heat,
d. said other conductor of high temperature coefficient of
resistance surrounds the said one conductor in spaced relation
thereto,
e. said low melting point conductors being disposed between said
two conductors of high temperature coefficient of resistance.
9. A hose as in claim 8, wherein:
a. the hose line comprises a spiral-wound flexible metal conduit
having a helical external groove,
b. said one conductor of high temperature coefficient of resistance
having an insulating jacket and being wound in said external
groove,
c. a spiral wrap of insulation surrounding said metal conduit and
one conductor,
d. said other conductor of high temperature coefficient of
resistance being wound around and external to said spiral wrap,
e. said conductors of low melting point being carried by said
spiral wrap of insulation.
10. A hose as in claim 2, and further including:
a. a supply of fire-extinguishing fluid connected to one end of
said hose line,
b. a valve controlling the flow of fluid from said supply to the
hose line,
c. an electric actuator for said valve, and
d. means for delaying the temperature change of one of said two
high temperature coefficient conductors when changes in ambient
temperature occur, and
e. means connected to said high-temperature coefficient conductors,
responding to a rapid change in the resistance of only one of said
conductors due to a rapid change in ambient temperature surrounding
said conductors, for activating said actuator to open the valve
whereby extinguishing fluid will be discharged through said hose
line.
11. Apparatus as in claim 10, wherein:
a. the means responsive to rapid change in the resistance of one of
the high-temperature coefficient conductors comprises a bridge
circuit connected to said valve actuator and having said conductors
in its legs.
12. Apparatus as in claim 10, wherein:
a. the means for delaying the temperature change comprises heat
insulation surrounding said one high-temperature coefficient
conductor.
13. Apparatus as in claim 12, wherein:
a. said other conductor is wrapped around the hose line in spaced
relation thereto,
b. said one conductor being disposed between the hose line and said
other conductor, in the space therebetween.
14. Apparatus as in claim 10, wherein:
a. the hose line comprises a spiral-wound flexible metal conduit
having a helical external metal groove,
b. said one conductor having a heat-insulating jacket and being
wound in said external groove.
15. Apparatus as in claim 11, and further including:
a. a conductor of low-melting point metal, wrapped around said hose
line and connected in a leg of said bridge to influence the latter
when the low-melting point metal melts and renders the conductor
discontinuous.
Description
CROSS-REFERENCES TO RELATED APPLICATIONS
1. Copending application of Elwood R. Horwinski, Ser. No. 755,203
filed Aug. 26 , 1968, entitled "Tamperproof Cable and Detection
System" and having common ownership with the present
application.
2. Copending application of Conrad S. Ham et al., Ser. No. 780,931,
filed Oct. 28, 1968, entitled "Printed-Circuit Type Security
Apparatus for Protecting Areas" and having common ownership with
the present application.
3. Copending application of Elwood R. Horwinski, Ser. No. 761,725
filed Sept. 23, 1968, entitled "Area Security Apparatus" and having
common ownership with the present application.
4. Copending application of Elwood R. Horwinski, Ser. No. 777,397
filed Nov. 20, 1968, entitled "Area Security System Comprising
Strain and Heat Responsive Network" and having common ownership
with the present application.
5. Copending application of Elwood R. Horwinski, Ser. No. 811,685,
filed Mar. 3, 1969, entitled "Electrical Apparatus and Method for
Monitoring Conditions" and having common ownership with the present
application.
6. Copending application of Elwood R. Horwinski, Ser. No. 790,784,
filed Jan. 13, 1969, entitled "Safety Cable" and having common
ownership with the present application.
BACKGROUND
This invention relates to automatic fire extinguishing systems.
Heretofore systems of the kind indicated, which were independent of
commercial utilities such as water, electricity etc. have been
proposed and produced. While these systems were operative under
certain given conditions they lacked sufficient sensitivity of
response to fire while remaining dormant or inoperative for normal
variations in the ambient temperature.
SUMMARY
The above drawbacks of prior fire extinguisher systems are obviated
by the present invention, one object being the provision of an
improved, wholly self-contained extinguisher which is independent
of commercial utilities and which has an especially sensitive
response to fire conditions while being relatively insensitive to
normal variations in ambient temperature. This is accomplished by a
novel combination comprising a local pressurized source of
extinguishing liquid connected with flexible, orificed distribution
hoses through valves which are electrically operated. The hoses
have detecting conductors responding to heat and connected with
power actuators for the valves, said actuators including electrical
bridges. Certain conductors are provided with heat insulation to
cause unbalance of the bridge and opening of the valves for rapid
rises in ambient temperature, while maintaining a bridge balance
and closed valve condition for normal, slow changes in ambient
temperature. Where the extinguishing fluid is carbon dioxide, the
orifices along the distribution hoses can be normally open. Those
orifices which are not near heat will quickly freeze closed, when
they are of small size due to evaporative cooling whereby only
orifices in the vicinity of the fire where they are heated will
remain operative to discharge the C0.sub.2.
Another object of the invention is to provide an improved fire
extinguisher system as above set forth, wherein automatic shut-off
of the extinguishing fluid is effected in the case of small fires
which are quickly put out, and wherein a nonreversible
extinguishing action occurs in the case of large fires which are
not quickly put out.
Other objects and advantages of the invention reside in the
provision of improved distribution hose constructions for a system
as characterized above, improved sensing conductor organizations in
the distribution hoses, and in the provision of an extinguishing
apparatus of the kind indicated, which is especially simple and
foolproof, relatively economical, reliable in its operation, and
adaptable to a wide variety of situations.
Still other features and advantages will hereinafter appear.
In the drawings:
FIG. 1 is a fragmentary perspective view of an automatic,
self-contained extinguishing apparatus as provided by the
invention.
FIG. 2 is a fragmentary top plan view of the apparatus, showing one
form of distribution hose construction.
FIG. 3 is a diagrammatic representation of a building structure
having incorporated in it the extinguishing apparatus.
FIG. 4 is a circuit diagram of an electrical control and indicator
or signal unit as incorporated in the apparatus.
FIG. 5 is an enlarged fragmentary side elevation of a portion of a
distribution hose and sensing conductors incorporated therein.
FIG. 6 is an end elevational view of a connector fitting and nozzle
adapted to join together two hose lines or sections.
FIG. 7 is a diagrammatic showing of a solid state trigger which is
substitutable for a corresponding trigger portion of the circuit of
FIG. 4 .
Referring first to FIGS. 1-3, the improved fire extinguisher
apparatus as shown therein embraces basically a plurality of hose
lines 10 (here shown as six in number) which are connected to
electrically controlled fluid valves 12 mounted on a manifold or
distribution box 14 which latter is carried in an outer container
or casing 16. The manifold 14 communicates with an inner container
or cylinder 18 containing carbon dioxide gas under high pressure.
One of the fluid distribution lines is diagrammatically illustrated
in FIG. 2, said line comprising a plurality of hose sections 20
which are joined together by couplings or fittings 22 provided with
nozzles or orifices 24. An end fitting 26, also having orifices 24,
is provided on one of the hose sections 20.
In FIG. 2 only one of the hose lines 20 is illustrated, it being
understood that a plurality of such lines is connected to the
CO.sub.2 cylinder 18. Although six such lines are illustrated, it
will be understood that either a greater or a lesser number may be
utilized, depending on installation requirements.
The hose lines 10 are flexible and may be of various lengths,
depending on the number of sections 20 which are utilized. In FIG.
3 there is illustrated a building structure 28 which is equipped
with the fire extinguisher system of the invention. The structure
28 is shown as having rooms or storage areas 30, 32 and 34 in which
are disposed the lines 10 of the extinguisher, arranged in a manner
considered most effective, depending on the material being stored
or the equipment being utilized.
In accordance with the present invention, each of the hoses 10
comprises not only a conduit or passage for fluid or liquid, but
also electrical detecting or sensing conductors which respond
selectively to a rapid rise of ambient temperature by operating the
associated electrically controlled valve, thereby to effect a
discharge of the extinguishing fluid through the hose line. The
sets of sensing conductors are respectively connected preferably
with a plurality of bridge circuits (one for each hose line) which
in turn control the electric valves 12 carried by the manifold
14.
Considering FIG. 4 there is diagrammatically illustrated a hose 10
comprising a flexible conduit 36 which is preferably of spiral
wound metal. Surrounding and wound about the conduit 36 are nickel,
sensing conductors 38, 40 and lead or equivalent low-melting point
sensing conductors 42, 44. The sensing conductors 38, 40, 42 and 44
are shown as connected respectively in the four legs of a bridge
circuit in such a manner that melting of the lead conductors will
unbalance the bridge, or that unequal changes in the resistance of
the nickel conductors will likewise unbalance the bridge. Such
unequal changes of resistance can occur in response to a rapid rise
in ambient temperature as from a conflagration whereas the relative
resistence values will not change for gradual changes of
temperature such as normally occur due to weather and like
conditions.
In effecting this, one of the nickel conductors (that indicated at
40) is provided with a heat-insulating jacket 46 whereby it will
not respond quickly to sudden large changes in temperature as from
a fire whereas it will gradually change in temperature in keeping
with changing weather or heating conditions or the like.
The bridge circuit is designated generally by the numeral 48, said
circuit comprising a ground 50 connected by a wire 52 to the
negative terminal of a battery 54. The positive terminal of the
battery 54 is connected through a switch 56 to a wire 58 comprising
one "corner" of the bridge. THe opposite "corner" of the bridge 48
comprises a wire 60 which is connected with the ground 50. The
nickel and lead sensing conductors are connected with corner
junctures 62, and 66. The junctions 64 and 68 are connected with a
galvanometer type instrument 70 which controls a movable shutter 72
having an aperture 74 in it. Adjacent the movable shutter 72 is an
incandescent electric lamp 76 connected by wires 78, 80 and a
resistor 82 to the battery 54. Closing of the switch 56 will
accordingly effect illumination of the lamp 76.
The bridge legs have adjustable resistors 84, 86, 88 and 90
connected respectively with the conductors 42, 38, 40 and 44
whereby each bridge leg constitutes a complete circuit, including
certain of the sensing conductors. The battery ground 50 is
connected by a wire 60 to the bridge juncture 66, and the bridge
juncture 62 is connected by the wire 58 to the switch 56.
Accordingly, the bridge is energized from the battery 54 and may be
placed in balance by suitable adjustment of the adjustable
resistors.
In conjunction with the galvanometer 70, lamp 76 and movable
shutter 72 there is provided a phototransistor or light sensitive
cell 91 of the transistor type, having a base 92, a collector 94
and an emitter 96. The base 92 is connected through a resistor 98
and wire 100 with the positive supply wires 80 and 58 from the
battery 56. The emitter 96 is connected by a wire 102 to the bridge
juncture 62 which is in turn connected with the positive supply
wire of the battery 56, and also connected by a wire 104 to a relay
coil 106 which is in turn connected to an emitter 108 of a power
transistor 110 whose base 112 is connected by wire 114 to the
collector of the light sensitive cell 91. A resistor 116 connects
the base 112 of the power transistor to the wire 104, said base
being also connected through a resistor 118 and wire 120 to the
collector 122 of the transistor 110. The wire 120 to the to the
bridge juncture 66 which goes to the negative supply wire from the
battery 56.
The relay coil 106 controls moveable contacts 124, 126, the latter
being a holding contact engageable with a stationary contact 128
connected to the transistor emitter 108. The movable contact 126 is
connected through a switch 130 to the collector 122.
The movable relay contact 124 connects through a wire 132 with a
battery 134 which is connected to a switch 136 for controlling a
signal or bell 138. The bell 138 is connected by a wire 140 to the
stationary contact 142 which is cooperable with the relay contact
124.
In addition to the signal 138, a valve circuit control is effected
by connecting to the wires 132 and 140 a valve coil 144 and battery
146.
Operation of the circuit of FIG. 4 is as follows: With the bridge
balanced, the shutter 72 will be centralized and light from the
lamp 76 will strike the light sensitive cell 91. This effects a
conductive path between the collector and emitter 94, 96 of the
cell 91, thereby effecting a clamping action between the base 112
and emitter 108 of the transistor 110. In other words, the effect
of light striking the cell 91 is such that no appreciable voltage
or potential difference exists between the base 112 and emitter 108
of the power transistor 110. However, when the shutter 72 deflects
to one side or the other due to unbalance of the bridge resulting
from shorting, breaking, melting or resistance changes of any
sensing wire or wires 38, 40, 42, or 44, light will be shut off
from the phototransistor 91, terminating the conductive path
between the collector and emitter 94, 96. The clamping action thus
ceases, and voltage can now exist across the resister 116, meaning
that a potential will exist between the base 112 and the collector
108 of the power transistor 110. Such voltage will render the
transistor 110 conducting whereby the relay coil 106 will be
energized by current flowing through the collector and emitter.
The result of this is that the relay coil 106, being energized,
will actuate the relay contacts 124, 126. If the relay contact 126
is in the nature of a holding contact, it will maintain the relay
energized regardless of shutting off of the transistor 110. The
relay contacts 124, 126 will effect energization of the bell 138
and actuation of the electric valves 144, sounding an alarm and
indicating that the bridge has been unbalanced, as by alteration of
the continuity or resistance of the wires 38, 40, 42 or 44. Thus,
according to the invention, the hose 10 can respond to excessive
heat by a melting of wires or changing of resistance, which wires
as later explained are especially arranged to monitor these
conditions.
Opening of the electric valve 144 will cause the CO.sub.2 from the
container 18 to flow through the designated hose 10 and out of the
nozzles thereof. Those nozzles which are not close to the heat will
quickly freeze over and close automatically due to the small size
and due to the evaporative cooling. The nozzles which are near the
heat will not freeze over because they are warmed. Instead they
will discharge the C0.sub.2 for the purpose of extinguishing the
fire.
In the event that the holding contacts 126, 128 of the relay coil
106 are not utilized but instead are rendered inoperative, an
automatic shutting off of the electric valve 144 can occur whenever
a balance is restored in the bridge. This can happen if none of the
lead conductors has melted, and if the fire is quickly extinguished
whereby the temperature of the noninsulated nickel sensing
conductor 38 drops to normal. However, if the fire is of
considerable magnitude, sufficient to melt the lead conductors 32,
44, then there can be no reversible action of the bridge to restore
the balance. In such case the absence of the holding contacts 126,
128 will be of no significance since the bridge will remain
permanently unbalanced, thus having the same effect as if the relay
had holding contacts and remained closed once it was actuated by
the bridge unbalance.
While FIG. 4 illustrates one specific type of bridge circuit and
valve control, it will be understood that the invention is not
limited to such arrangement, since others are possible without
departing from the spirit of the invention.
A bridge circuit similar to that of FIG. 4, is illustrated and
described in the copending application of Elwood R. Horwinski, Ser.
No. 755,203 filed Aug. 26, 1968 and entitled "Tamperproof Cable and
Detection System."
It will be understood that the electrically operated valve 144 of
FIG. 4 may comprise either of the valves 12 shown in FIGS. 1 and 2,
and that for each electrically operated valve and hose line there
will be a corresponding bridge circuit with sensing conductors as
illustrated in FIG. 4.
In place of the trigger device comprising the galvanometer 70,
mirror 72, lamp 74 and phototransistor 91, a fully solid-state
trigger may be employed. In FIG. 7 such a solid state trigger is
illustrated, having terminals A, B, C, D, E and F for connection to
the correspondingly lettered terminals in FIG. 4. With such
substitution the devices 70, 72, 76, 82 and 91 will be removed from
the circuit.
An advantageous hose line construction as provided by the invention
is illustrated in FIGS. 4, 5 and 6. The hose line 20 shown in FIG.
5 comprises the spiral metal conduit 36 which may be of well-known
construction, said conduit having wrapped around it the nickel
sensing conductor 40 with its heat insulating jacket 46. The
conductor 40 may be disposed in the helical groove of the metal
conduit 36, as shown. Wrapped over the conduit 36 and conductor 40
is a spiral-wrap ribbon 148 of insulating plastic. Around the wrap
148 is a second spiral wrap 150 of plastic ribbon, having adhered
to it meltable foil strips constituting the lead conductors 42, 44
of FIG. 4. An insulating spiral wrap of plastic ribbon 152 is
placed around the ribbon 150 and foil strips 42, 44, thereby to
cover the strips with an insulating layer. Around the spiral wrap
152 there is a wire braid wrap 154 which contains the nickel
sensing conductor 38, said conductor having enamel or equivalent
insulation whereby it does not make electrical contact with the
remaining wires of the braid. Surrounding the braid 154 is an outer
insulating jacket 156 of extruded plastic.
The conductors 40, 42, 44 and 38 may be brought out to a pronged
electrical fitting 158 at one end of a section of the hose line,
such end being provided with a threaded end fitting 160. A
companion section of hose line 20 illustrated in FIG. 5 may also
have an end fitting 160 of a similar type, as well as a socket-type
electrical fitting 162 which is cooperable with the fitting 158 for
the purpose of providing continuity of the circuits of the sensing
wires.
The hose sections 20 may be joined by a fitting or coupling 164
having turnable, internally threaded collars 166 adapted to thread
onto the short nipple portions 168 of the end fittings 160. The
hose coupling 164 can have one or more nozzles 170, two such
nozzles being illustrated as in FIG. 6.
The above organization has a number of advantages. Hose lines 10 of
any practical length may be readily assembled by the use of longer
or shorter sections 20 which are coupled together by the fittings
164. Discharge nozzles may be located at strategic points by
selecting suitable lengths of said hose sections; or a number of
nozzle fittings may be joined to each other by use of suitable
short nipples whereby any juncture between two hose sections 20 may
have four, six or more nozzles, directed in different
directions.
The use of the heat insulation 46 on the nickel sensing conductor
40 and the location of said conductor closely adjacent the metal
conduit 36 and removed inwardly from the outer layers of the hose
assemblage results in an advantageous delay in temperature changes
of this wire. Accordingly, the nickel wire 38 will respond more
rapidly than the wire 40 to sudden changes in ambient temperature,
such as may be occasioned by a conflagration, thereby resulting in
an unbalance of the bridge circuit and actuation of the associated
electric valve. However, when gradual changes in ambient
temperature occur, the nickel conductors 38 and 40 will
substantially simultaneously change their temperature and
resistance whereby the balance of the associated bridge circuit
will not be disturbed. Accordingly, the system will respond rapidly
to fire conditions, but will not react at all to normal changes in
ambient temperatures such as those occasioned by weather, heating
conditions in the building, and the like.
It will now be seen from the foregoing that I have provided a novel
and improved automatic fire extinguishing system which is extremely
sensitive to rapid, appreciable changes in temperature. Relatively
slight changes in the resistance of the nickel wire 38 with respect
to the resistance to the wire 40 can cause an unbalance of the
bridge, whereby a sensitive response is had to fire conditions.
However, in spite of such sensitive response, the apparatus will
not be set off due to normal changes of ambient temperature, as
already explained above. For small conflagrations involving
unbalance of the bridge only by virtue of response of the nickel
conductors, an automatic shut-off of the extinguishing fluid can
occur when the fire has been extinguished and the bridge restored
to balance by virtue of the nickel conductors being restored to
their normal resistance values (provided that no holding contacts
are employed in the system, such as the contacts 126, 128).
Referring again to FIG. 1, the container 16 may house the bell or
signal alarm 138 and may also have a signal light 172 energized
simultaneously with the bell 138. The bridge circuits associated
with the hoses 10 may be housed in the container 16, in a suitable
casing such as indicated at 174, and the various batteries and a
charging unit are indicated as housed in a separate container 176.
It will be understood that the apparatus as above set forth is
independent of commercial utilities such as water supply,
commercial electric power and the like. The apparatus is relatively
simple, and is reliable and foolproof in its operation.
Variations and modifications are possible without departing from
the spirit of the invention.
* * * * *