Title of Invention	A WATER TREATMENT SYSTEM
Abstract	A water treatment system (5) has a battery (22) rechargeable by a manual generator, thus eliminating the need for an external power source. The water treatment system (5) uses the rechargeable battery (22) to power a pump (12) and a UV lamp (16). After the water passes through a filter (10), the UV lamp (16) treats the water being pumped through the apparatus. The system (5) optionally includes a flashlight (30), also powered by the rechargeable battery (22).

Title of Invention

A WATER TREATMENT SYSTEM

Abstract

A water treatment system (5) has a battery (22) rechargeable by a manual generator, thus eliminating the need for an external power source. The water treatment system (5) uses the rechargeable battery (22) to power a pump (12) and a UV lamp (16). After the water passes through a filter (10), the UV lamp (16) treats the water being pumped through the apparatus. The system (5) optionally includes a flashlight (30), also powered by the rechargeable battery (22).

Full Text	BACKGROUND OF THE INVENTION The present invention relates to water treatment systems and more specifically to portable water treatment systems. "Water treatment systems may remove pathogens, chemical contaminants and turbidity from water. In some water-treatment systems, a filter is used to remove particulates and an ultraviolet (UV) lamp is used to irradiate the water. A pump is often used to propel water through the systems. The operation of such a water treatment system using a lamp requires electricity. However, water treatment systems are often needed in areas where electricity is not provided. Water treatment systems have been developed for use where electric power may not be available. One such water treatment system is shown in U.S. Patent 4,849,100 for "Portable Water Treatment subsystem," which issued to Papandrea. The water treatment system includes a particulate filter, a UV reactor and a de-calcification unit. The system receives power from either an AC outlet or a 12 V DC power source. Although the system is relatively small, the system is transported in a disassembled state and must be assembled at the time of use. Further, the system requires a separate electric power source. Another portable water treatment system is shown in U.S. Patent 5,900,212 for "Hand-held Ultraviolet Water Purification System," which issued to Maiden et al. The Maiden system is directed to a water treatment system having a U V lamp for treating water. The system includes a 3.4 volt rechargeable lithium battery to function as a power source. The Maiden system is designed to provide a.UV lamp that can be submerged in standing water, for example, in a canteen or bucket, to subject the water to UV light. Although conventional portable water treatment systems are capable of removing unwanted chemicals, pathogens and other contaminants from water, they have shortcomings. First, conventional water treatment systems must be connected to a power source to provide power to the UV lamp. If the system includes a battery, the system is unusable until the battery is recharged or a new battery is obtained. Second, the units are relatively large. These systems are usually too large to fit in a conventional backpack or handbag. This can be a significant problem when a user has to transport the system a considerable distance. Finally, if the water system is connected to a battery, the battery may fail to adequately power the UV lamp such that the water is not properly irradiated. An improved water treatment system to overcome these shortcomings is therefore highly desirabl e. BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS Fig. 1 is a block diagram of a water treatment system. Fig. 2 is a flowchart showing the operation of the water treatment system. Fig. 3 is a.flowcbart showing another aspect of the operation of the water treatment system. Fig. 4 is a perspective view of a portable water freatmentsystem according to a preferred embodiment of the present invention. Fig. 5 is an exploded view of the water treatment system. Fig. 6 is a cross-sectional view of the water treatment. DETAILED DESCRIPTION OF THE DRAWINGS Fig. .1 is a functional block diagram for water treatment system 5. Filter 10, UV transmissive reactor 14 and UV lamp 16 form treatment subsystem treatment section for power water treatment system 5. Water first enters the system and passes through filter ] 0. Filter 10 may be any filter capable of removing contaminants from water, such as a caibon filter. Pump 12 moves the water through the system. Pump 12 is preferably a DC (direct current) pump. Pump 32 could be contained within the housing or part of the inlet assembly. After "water leaves pump 12, .it then passes to UV transmissive reactor 14. Light from UV lamp 16 decontaminates the water in UV transmissive reactor 14. The water then leaves the water treatment system. Controller 18 regulates the operation of water treatment system 5. Controller 18 could be a microcontroller or a microprocessor. If controller 18 were a microcontroller, external memory and other supporting circuitry could be provided. Controller 18 controls pump 12 so that water has sufficient time in UV transmissive reactor 14 to be irradiated. Lamp, sensor 20 provides information, to controller 18 as to the operational characteristics of U V lamp 16. If lamp sensor 20 detects that UV lamp 16 is not operating with sufficient intensity,, controller 18' will i disable pump 12 to stop further attempts to treat water. In some applications^ water treatment system 5 could optionally operate without a functioning UV lamp 16, providing the-user with filtered water. Charge storage device 22: which could be rechargeable, provides povyer for water treatment system 5. Charge storage device 22 could be comprised of a dry-ceil battery, a wet-cell battery, a capacitor, a super capacitor, or other electric charge storage. Charge control circuit 24 monitors charge storage device 22 as well as power source 26. Charge control circuit 24 provides information regarding the status, and type of charge storage device 22 to controller 18. Charge control circuit 24 also monitors the status of power source 26. Power source 26 could be a hand crank electric generator having a dynamo, a spring generator, a solar power cel], fuel cell, a DC power source, or an AC power source. If excess power is available from power source 26, charge control circuit 24 determines whether charge storage device 22 could be further charged. If so, charge control circuit 24 could allow charging of charge storage device 22. To perform this function, a memory either internal to or coupled to controller 18 could contain the power requirements to operate UV lamp 16 and pump 12. By comparing the power provided by power source 26, controller 18 can determine whether sufficient power was present to operate UV lamp 16 and pump 12 and simultaneously replenish charge storage device 22. Controller 18 is also connected to flashlight control circuit 28. Flashlight control circuit 28 is connected, to.flashlight 30. If controller 18 receives a signal from,, for example, one of switches 32 (-described below) to energize flashlight 30, controller 18 determines whether sufficient power is available from charge storage device 22. If sufficient power is available, then controller 18 enables flashlight control circuit 28 to energize flashlight 30. If sufficient power is not available,, flashlight 30 is not energized. Display 34 provides information about the operation of water treatment system 5. Display could be a liquid crystal display (LCD), a series of light emitting diodes (LEDs), an audible enunciator, or some other device capable of providing infonnation to a user. Display 34 is optional and can be eliminated in some applications. Switches 32 allow a user to send a variety of commands to controller 18, such as "turn on flashlight" or "purify water." The controller can also have preset timing.as.to. UV on-time vs. dose and the microcontroller can allow proper UV time-on before pumping water. It is known that UV intensity increases as the lamp warms up, the microprocessor can assure a better point on this curve with or without a light sensor. Controller 18 is also coupled to lamp enable circuit 36. Lamp enable circuit 36 controls ballast circuit 38. Ballast circuit 38 is any of the many well known circuits for energizing UV lamps. Fig. 2 shows a method of operating a water treatment system. After the system is started by the user activating switches 32, controller 18 determines whether sufficient power is present to energize UV lamp 16 and to operate pump 12 and any other devices currently operating. Step 40. If sufficient power is not present the user is notified of the lack of power and the process terminates. Step 42. The process is then ended and the display indicated this to the user. Step 5.6. If sufficient power is present,, then the lamp is energized. Step 44. The UV lamp output is then tested by lamp sensor 20. If the sensor is not used the design, will have appropriate design margins to assume the lamp is on via current- sensor and wait the designated warm up period to assure intensity level. Step 48. If the UV lamp output or lamp current is not sufficient, then the user is notified of a lamp failure. Step 50. The process is then ended, Step 56. Alternatively, a user could manually override the lamp failure and enable operation.of the system. On the other hand, if UV lamp output is sufficient, then a pump rate, is calculated based upon the UV lamp output. Step 52. The pump is then energized to operate at the appropriate rate. Step 54. In one embodiment, about 8 watts of power is required to energize the lamp or 250mA for a 36 milliliter reactor at a flow rate of about .8 gallons per minutes. Slower flow rates and lower currents can be used to conserve power and extend use. Fig. 3 shows the operation of flashlight 30. The available power is checked. Step 60. If sufficient power is available to power flashlight and any other devices currently operating, then the flashlight is energized. Step 62. If not, then the user is notified of insufficient power. Step 64. The process then ends. Step 66.. Fig. 4 shows water treatment system 5. In the illustrated embodiment, water treatment system 5 includes inlet 101 for providing water to the system, outlet 103 for dispensing "water from the system and charging crank 76 for supplying power to water treatment system 5. Case 70 and face 72 form ahousingto contain water treatment system 5. Water treatment system 5 of the present invention can be manually recharged, eliminating the need for an external electric source to charge the system. Water control switch 94 controls the pumping of water through system 10. Light switch 96 controls flashlight 73. Fig. 5 is an exploded view of water treatment system 5. Flashlight 73 can be used independently of the other components of water treatment system 5. Case 70 could be constructed of reinforced plastic. Face 72 includes crank cavity 74. Crank 76 is preferably housed.within the crank cavity 74 when crank 76 is not in use. Crank 76 fits through port. 78 to engage gears 80. Reflector 88 fits around UV lamps-83 to increase the exposure of UV transmissive reactor 14 to the output of UV lamps 83. Charger 82 is connected to generator 84. Charger 82 could be connectabie to an externa] AC or DC power source, such as a. wall outlet, a solar cell or battery. Generator 84 is a manually chargeable generator. Crank 76 is .operationally engaged with generator 84. Generator 84 can be any conventional manual generator, such as the manual generators disclosed in U.S. Patents 6,133,642 to Hutchinson and 6,472,846 to Hutchinson et al, which are incorporated herein by reference in their entirety. Alternatively, the generator could be foot-actuated as well as hand cranked. When turned, crank 76 powers generator 84. In one embodiment, generator 84 transfers a charge to charger 82, which in turn charges battery 86. In another embodiment, generator 84 could be used to directly power the system. Crank 76.can be returned to crank'cavity 74 after use. Alternatively, each of these power systems may be used remotely with the water treatment system. In another alternative, crank 76 would be used to mechanically power pump 104. Referring to Fig. 6, case 70 contains filter 102, pump 104, coil 92 and UV lamps. 83. Water passes through inlet 100 and through filter 102. Filter 102 may be any filter capable of removing contaminants from water, such as a carbon filter. Water moves from filter 102 to pump 104 by way of pipe 105. Pump 104 may have different.operating speeds. Coil 92 may be directly connected to pump 104 or may be connected to pump 104 by additional tubing. Coil 92 preferably is circumferentially disposed about UV lamps 83. Coil 9.2 can be constructed of any UV transparent material, such as soft glass, Quartz or polytetrafiuorpethylene (more commonly known as Teflon). 'Reflector 88, shown in Fig. 5, may be used to increase the exposure of the water in.poil 92 to the light from UV lamps 83. UV lamps 83 are connected to ballast 9.0. Controller 108 is connected to ballast 90 and controls the powering of UV lamps 83. To control the water passing through the system, controller 108 is also connected to pump 104. Controller 108 may be connected to flashlight 73, Controller 108 preferably is connected to water control switch.94 and light switch 96 located on ease 70. Switches 94,96 allow the user to select between two or mote operation modes. Switches 94,96 could be moved between multiple operation modes. For example, system 5 could additionally operate as a night light, or emergency flasher. Controller 108 preferably is programmed to distribute power appropriately between flashlight 73, pump 104, charger 82 and UV lamps 83. Controller 108 could distribute necessary power to alL of the devices, or it qould power devices based upon. their priority. Water control switch 94 would signal the controller 108, which in turn would signal pump 104 to pump water. Similarly, light switch 96 has at least an "on" position and an "off position. If flashlight 73 includes multiple lights or multiple modes, such as a flash mode, light switch 96 may include positions to actuate these alternative ' functions. Flashlight 73 could be connected to a light control circuit. The light control circuit may be programmed to power light 110 in multiple modes, such as a flash mode. Alternatively, the light control circuit could powera: plurality of lights. Inlet tube 101 is placed in a water source such as a stream, a p.ond,. a lake, a river, or any other source of water, including a sink or bathtub containing water. Pump 104 draws the. water through inlet tube 101 into filter 102. The pump may also be located within or at the end of the inlet tube, F'ilter 102 removes contaminants from the water. Water is then pumped through-coil 92, exposing the water to UY light from UV lamps lamp S3. The UY lamps, deactivate microorganisms and bacteria in the water. If pump 104 has variable speeds, the user selectsthe pump speed using the water control switch 94. The water is dispensed.,via outlet tube 103,. The above description is of the preferred embodiment. Various alterations and changes can be made without departing from the spirit and broader aspects of the . invention as defined in the appended claims, which are to be interpreted in accordance with the principles of patent law including the doctrine of equivalents. Any references to claim elements in the singular, for example, using the articles "a," "an," "the," or "said," is not to be construed as limiting the element to the singular. WE CLAIM: 1. A water treatment system comprising: a pump for moving water through the water treatment system; an ultraviolet transmissive reactor; an ultraviolet lamp for irradiating the water; a battery for powering the pump and the ultraviolet lamp; and a manual charger for charging the battery. 2. The water treatment system as claimed in claim 1, wherein there is provided: a controller coupled to the pump and the battery, whereby the controller prohibits energizing the pump in the event of the battery having insufficient power to energize the ultraviolet lamp at a desired intensity. 3. The water treatment system as claimed in claim 2, wherein there is provided a lamp sensor for sensing light from the ultraviolet lamp. 4. The water treatment system as claimed in claim 3, wherein there is provided a ballast circuit for energizing the ultraviolet lamp. 5. The water treatment system as claimed in claim 4, wherein there is provided an enable circuit for energizing the ballast circuit. 6. The water treatment system as claimed in claim 5, wherein there is provided a battery monitor circuit, the battery monitor circuit coupled to the battery and the controller. 7. The water treatment system as claimed in claim 6, wherein there is provided a flashlight. 8. The water treatment system as claimed in claim 7, wherein there is provided a flashlight control circuit for energizing the flashlight. 9. The water treatment system as claimed in claim 8, wherein there is provided a filter. 10. The water treatment system as claimed in claim 9, wherein there is provided a battery charge circuit responsive to a power source to allow charging of the battery by the power source in the event of the battery being below a maximum charge. 11. The water treatment system as claimed in claim 10, wherein the battery charge circuit is arranged to prohibit charge of the battery in the event of the battery being at the maximum charge. 12. The water treatment system as claimed in claim 11, wherein the controller is arranged to enable the flashlight control circuit to energize the ultraviolet lamp in the event of the power source being operational. 13. The water treatment system as claimed in claim 12, wherein the pump has variable speeds. 14. A water treatment system comprising: a housing; a treatment subsystem treatment section having an ultraviolet (UV) lamp contained within the housing; a pump for moving water through the water treatment system; a battery for powering the treatment subsystem treatment section; a charger contained within the housing and connected to the battery; and a manual generator connected to the charger; wherein the battery is also arranged to power the pump, wherein manual operation of the manual generator charges the battery to provide power to both the treatment subsystem treatment section and the pump. 15. The water treatment system as claimed in claim 14, wherein there is provided: a controller for regulating the operation of the water treatment system. 16. The water treatment system as claimed in claim 15, wherein there is provided a lamp monitor for monitoring the UV lamp wherein the lamp monitor is coupled to the controller. 17. The water treatment system as claimed in claim 16, wherein there is provided a power source. 18. The water treatment system as claimed in claim 17, wherein the charger is coupled to the controller. 19. The water treatment system as claimed in claim 18, wherein the controller is arranged to selectively provide power to the charger from the power source. 20. The water treatment system as claimed in claim 14, wherein the manual generator comprises a dynamo. 21. The water treatment system as claimed in claim 14, wherein the manual generator comprises a spring generator. 22. The water treatment system as claimed in claim 15, wherein the controller is arranged to prohibit energizing the pump in the event of the battery having insufficient power to energize the UV lamp at a desired intensity. 23. The water treatment system as claimed in claim 22, wherein there is provided a ballast circuit for energizing the UV lamp. 24. The water treatment system as claimed in claim 23, wherein there is provided an enable circuit for energizing the ballast circuit. 25. The water treatment system as claimed in claim 24, wherein there is provided a battery monitor circuit, the battery monitor circuit coupled to the battery and the controller. 26. The water treatment system as claimed in claim 25, wherein there is provided a flashlight. 27. The water treatment system as claimed in claim 26, wherein there is provided a flashlight control circuit for energizing the flashlight. 28. The water treatment system as claimed in claim 27, wherein there is provided a filter. 29. The water treatment system as claimed in claim 28, wherein there is provided a battery charge circuit responsive to a power source to allow charging the battery by the power source in the event of the battery being below a maximum charge. 30. The water treatment system as claimed in claim 29, wherein the battery charge circuit is arranged to prohibit charge of the battery in the event of the battery being at the maximum charge. 33. The water treatment system as claimed in claim 30, wherein the controller is arranged to enable the flashlight control circuit to energize the UV lamp in the event of the power source being operational. 32. The water treatment system as claimed in claim 31, wherein the pump has variable speeds. A water treatment system (5) has a battery (22) rechargeable by a manual generator, thus eliminating the need for an external power source. The water treatment system (5) uses the rechargeable battery (22) to power a pump (12) and a UV lamp (16). After the water passes through a filter (10), the UV lamp (16) treats the water being pumped through the apparatus. The system (5) optionally includes a flashlight (30), also powered by the rechargeable battery (22).

Full Text

BACKGROUND OF THE INVENTION
The present invention relates to water treatment systems and more
specifically to portable water treatment systems.
"Water treatment systems may remove pathogens, chemical contaminants
and turbidity from water. In some water-treatment systems, a filter is used to remove
particulates and an ultraviolet (UV) lamp is used to irradiate the water. A pump is often
used to propel water through the systems.
The operation of such a water treatment system using a lamp requires
electricity. However, water treatment systems are often needed in areas where electricity
is not provided. Water treatment systems have been developed for use where electric
power may not be available.
One such water treatment system is shown in U.S. Patent 4,849,100 for
"Portable Water Treatment subsystem," which issued to Papandrea. The water treatment
system includes a particulate filter, a UV reactor and a de-calcification unit. The system
receives power from either an AC outlet or a 12 V DC power source. Although the
system is relatively small, the system is transported in a disassembled state and must be
assembled at the time of use. Further, the system requires a separate electric power
source.
Another portable water treatment system is shown in U.S. Patent
5,900,212 for "Hand-held Ultraviolet Water Purification System," which issued to
Maiden et al. The Maiden system is directed to a water treatment system having a U V
lamp for treating water. The system includes a 3.4 volt rechargeable lithium battery to
function as a power source. The Maiden system is designed to provide a.UV lamp that
can be submerged in standing water, for example, in a canteen or bucket, to subject the
water to UV light.
Although conventional portable water treatment systems are capable of
removing unwanted chemicals, pathogens and other contaminants from water, they have
shortcomings. First, conventional water treatment systems must be connected to a power
source to provide power to the UV lamp. If the system includes a battery, the system is
unusable until the battery is recharged or a new battery is obtained. Second, the units are
relatively large. These systems are usually too large to fit in a conventional backpack or
handbag. This can be a significant problem when a user has to transport the system a
considerable distance. Finally, if the water system is connected to a battery, the battery
may fail to adequately power the UV lamp such that the water is not properly irradiated.
An improved water treatment system to overcome these shortcomings is
therefore highly desirabl e.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Fig. 1 is a block diagram of a water treatment system.
Fig. 2 is a flowchart showing the operation of the water treatment system.
Fig. 3 is a.flowcbart showing another aspect of the operation of the water
treatment system.
Fig. 4 is a perspective view of a portable water freatmentsystem according
to a preferred embodiment of the present invention.
Fig. 5 is an exploded view of the water treatment system.
Fig. 6 is a cross-sectional view of the water treatment.
DETAILED DESCRIPTION OF THE DRAWINGS
Fig. .1 is a functional block diagram for water treatment system 5. Filter
10, UV transmissive reactor 14 and UV lamp 16 form treatment subsystem treatment
section for power water treatment system 5. Water first enters the system and passes through
filter ] 0. Filter 10 may be any filter capable of removing contaminants from water, such
as a caibon filter. Pump 12 moves the water through the system. Pump 12 is preferably a
DC (direct current) pump. Pump 32 could be contained within the housing or part of the
inlet assembly. After "water leaves pump 12, .it then passes to UV transmissive reactor 14.
Light from UV lamp 16 decontaminates the water in UV transmissive reactor 14. The
water then leaves the water treatment system.
Controller 18 regulates the operation of water treatment system 5.
Controller 18 could be a microcontroller or a microprocessor. If controller 18 were a
microcontroller, external memory and other supporting circuitry could be provided.
Controller 18 controls pump 12 so that water has sufficient time in UV
transmissive reactor 14 to be irradiated. Lamp, sensor 20 provides information, to
controller 18 as to the operational characteristics of U V lamp 16. If lamp sensor 20
detects that UV lamp 16 is not operating with sufficient intensity,, controller 18' will
i disable pump 12 to stop further attempts to treat water. In some applications^ water
treatment system 5 could optionally operate without a functioning UV lamp 16, providing
the-user with filtered water.
Charge storage device 22: which could be rechargeable, provides povyer
for water treatment system 5. Charge storage device 22 could be comprised of a dry-ceil
battery, a wet-cell battery, a capacitor, a super capacitor, or other electric charge storage.
Charge control circuit 24 monitors charge storage device 22 as well as power source 26.
Charge control circuit 24 provides information regarding the status, and type of charge
storage device 22 to controller 18.
Charge control circuit 24 also monitors the status of power source 26.
Power source 26 could be a hand crank electric generator having a dynamo, a spring
generator, a solar power cel], fuel cell, a DC power source, or an AC power source. If
excess power is available from power source 26, charge control circuit 24 determines
whether charge storage device 22 could be further charged. If so, charge control circuit
24 could allow charging of charge storage device 22.
To perform this function, a memory either internal to or coupled to
controller 18 could contain the power requirements to operate UV lamp 16 and pump 12.
By comparing the power provided by power source 26, controller 18 can determine
whether sufficient power was present to operate UV lamp 16 and pump 12 and
simultaneously replenish charge storage device 22.
Controller 18 is also connected to flashlight control circuit 28. Flashlight
control circuit 28 is connected, to.flashlight 30. If controller 18 receives a signal from,, for
example, one of switches 32 (-described below) to energize flashlight 30, controller 18
determines whether sufficient power is available from charge storage device 22. If
sufficient power is available, then controller 18 enables flashlight control circuit 28 to
energize flashlight 30. If sufficient power is not available,, flashlight 30 is not energized.
Display 34 provides information about the operation of water treatment
system 5. Display could be a liquid crystal display (LCD), a series of light emitting
diodes (LEDs), an audible enunciator, or some other device capable of providing
infonnation to a user. Display 34 is optional and can be eliminated in some applications.
Switches 32 allow a user to send a variety of commands to controller 18, such as "turn on
flashlight" or "purify water." The controller can also have preset timing.as.to. UV on-time
vs. dose and the microcontroller can allow proper UV time-on before pumping water. It
is known that UV intensity increases as the lamp warms up, the microprocessor can
assure a better point on this curve with or without a light sensor.
Controller 18 is also coupled to lamp enable circuit 36. Lamp enable
circuit 36 controls ballast circuit 38. Ballast circuit 38 is any of the many well known
circuits for energizing UV lamps.
Fig. 2 shows a method of operating a water treatment system. After the
system is started by the user activating switches 32, controller 18 determines whether
sufficient power is present to energize UV lamp 16 and to operate pump 12 and any other
devices currently operating. Step 40. If sufficient power is not present the user is notified
of the lack of power and the process terminates. Step 42. The process is then ended and
the display indicated this to the user. Step 5.6.
If sufficient power is present,, then the lamp is energized. Step 44. The
UV lamp output is then tested by lamp sensor 20. If the sensor is not used the design, will
have appropriate design margins to assume the lamp is on via current- sensor and wait the
designated warm up period to assure intensity level. Step 48. If the UV lamp output or
lamp current is not sufficient, then the user is notified of a lamp failure. Step 50. The
process is then ended, Step 56. Alternatively, a user could manually override the lamp
failure and enable operation.of the system.
On the other hand, if UV lamp output is sufficient, then a pump rate, is
calculated based upon the UV lamp output. Step 52. The pump is then energized to
operate at the appropriate rate. Step 54. In one embodiment, about 8 watts of power is
required to energize the lamp or 250mA for a 36 milliliter reactor at a flow rate of about
.8 gallons per minutes. Slower flow rates and lower currents can be used to conserve
power and extend use.
Fig. 3 shows the operation of flashlight 30. The available power is
checked. Step 60. If sufficient power is available to power flashlight and any other
devices currently operating, then the flashlight is energized. Step 62. If not, then the user
is notified of insufficient power. Step 64. The process then ends. Step 66..
Fig. 4 shows water treatment system 5. In the illustrated embodiment,
water treatment system 5 includes inlet 101 for providing water to the system, outlet 103
for dispensing "water from the system and charging crank 76 for supplying power to water
treatment system 5. Case 70 and face 72 form ahousingto contain water treatment
system 5. Water treatment system 5 of the present invention can be manually recharged,
eliminating the need for an external electric source to charge the system.
Water control switch 94 controls the pumping of water through system 10.
Light switch 96 controls flashlight 73.
Fig. 5 is an exploded view of water treatment system 5. Flashlight 73 can
be used independently of the other components of water treatment system 5. Case 70
could be constructed of reinforced plastic.
Face 72 includes crank cavity 74. Crank 76 is preferably housed.within
the crank cavity 74 when crank 76 is not in use. Crank 76 fits through port. 78 to engage
gears 80. Reflector 88 fits around UV lamps-83 to increase the exposure of UV
transmissive reactor 14 to the output of UV lamps 83.
Charger 82 is connected to generator 84. Charger 82 could be connectabie
to an externa] AC or DC power source, such as a. wall outlet, a solar cell or battery.
Generator 84 is a manually chargeable generator. Crank 76 is .operationally engaged with
generator 84. Generator 84 can be any conventional manual generator, such as the
manual generators disclosed in U.S. Patents 6,133,642 to Hutchinson and 6,472,846 to
Hutchinson et al, which are incorporated herein by reference in their entirety.
Alternatively, the generator could be foot-actuated as well as hand cranked.
When turned, crank 76 powers generator 84. In one embodiment,
generator 84 transfers a charge to charger 82, which in turn charges battery 86. In another
embodiment, generator 84 could be used to directly power the system. Crank 76.can be
returned to crank'cavity 74 after use. Alternatively, each of these power systems may be
used remotely with the water treatment system. In another alternative, crank 76 would be
used to mechanically power pump 104.
Referring to Fig. 6, case 70 contains filter 102, pump 104, coil 92 and UV
lamps. 83. Water passes through inlet 100 and through filter 102. Filter 102 may be any
filter capable of removing contaminants from water, such as a carbon filter. Water moves
from filter 102 to pump 104 by way of pipe 105. Pump 104 may have different.operating
speeds.
Coil 92 may be directly connected to pump 104 or may be connected to
pump 104 by additional tubing. Coil 92 preferably is circumferentially disposed about
UV lamps 83. Coil 9.2 can be constructed of any UV transparent material, such as soft
glass, Quartz or polytetrafiuorpethylene (more commonly known as Teflon). 'Reflector
88, shown in Fig. 5, may be used to increase the exposure of the water in.poil 92 to the
light from UV lamps 83.
UV lamps 83 are connected to ballast 9.0. Controller 108 is connected to
ballast 90 and controls the powering of UV lamps 83. To control the water passing
through the system, controller 108 is also connected to pump 104. Controller 108 may be
connected to flashlight 73,
Controller 108 preferably is connected to water control switch.94 and light
switch 96 located on ease 70. Switches 94,96 allow the user to select between two or
mote operation modes. Switches 94,96 could be moved between multiple operation
modes.
For example, system 5 could additionally operate as a night light, or
emergency flasher.
Controller 108 preferably is programmed to distribute power appropriately
between flashlight 73, pump 104, charger 82 and UV lamps 83. Controller 108 could
distribute necessary power to alL of the devices, or it qould power devices based upon.
their priority.
Water control switch 94 would signal the controller 108, which in turn
would signal pump 104 to pump water. Similarly, light switch 96 has at least an "on"
position and an "off position. If flashlight 73 includes multiple lights or multiple modes,
such as a flash mode, light switch 96 may include positions to actuate these alternative '
functions.
Flashlight 73 could be connected to a light control circuit. The light
control circuit may be programmed to power light 110 in multiple modes, such as a flash
mode. Alternatively, the light control circuit could powera: plurality of lights.
Inlet tube 101 is placed in a water source such as a stream, a p.ond,. a lake,
a river, or any other source of water, including a sink or bathtub containing water. Pump
104 draws the. water through inlet tube 101 into filter 102. The pump may also be located
within or at the end of the inlet tube, F'ilter 102 removes contaminants from the water.
Water is then pumped through-coil 92, exposing the water to UY light from UV lamps
lamp S3. The UY lamps, deactivate microorganisms and bacteria in the water.
If pump 104 has variable speeds, the user selectsthe pump speed using the
water control switch 94. The water is dispensed.,via outlet tube 103,.
The above description is of the preferred embodiment. Various alterations
and changes can be made without departing from the spirit and broader aspects of the .
invention as defined in the appended claims, which are to be interpreted in accordance
with the principles of patent law including the doctrine of equivalents. Any references to
claim elements in the singular, for example, using the articles "a," "an," "the," or "said,"
is not to be construed as limiting the element to the singular.
WE CLAIM:
1. A water treatment system comprising:
a pump for moving water through the water treatment system;
an ultraviolet transmissive reactor;
an ultraviolet lamp for irradiating the water;
a battery for powering the pump and the ultraviolet lamp; and
a manual charger for charging the battery.
2. The water treatment system as claimed in claim 1, wherein there is provided:
a controller coupled to the pump and the battery, whereby the controller
prohibits energizing the pump in the event of the battery having insufficient power to
energize the ultraviolet lamp at a desired intensity.
3. The water treatment system as claimed in claim 2, wherein there is provided a
lamp sensor for sensing light from the ultraviolet lamp.
4. The water treatment system as claimed in claim 3, wherein there is provided a
ballast circuit for energizing the ultraviolet lamp.
5. The water treatment system as claimed in claim 4, wherein there is provided an
enable circuit for energizing the ballast circuit.
6. The water treatment system as claimed in claim 5, wherein there is provided a
battery monitor circuit, the battery monitor circuit coupled to the battery and the
controller.
7. The water treatment system as claimed in claim 6, wherein there is provided a
flashlight.
8. The water treatment system as claimed in claim 7, wherein there is provided a
flashlight control circuit for energizing the flashlight.
9. The water treatment system as claimed in claim 8, wherein there is provided a
filter.
10. The water treatment system as claimed in claim 9, wherein there is provided a
battery charge circuit responsive to a power source to allow charging of the battery by the
power source in the event of the battery being below a maximum charge.
11. The water treatment system as claimed in claim 10, wherein the battery charge
circuit is arranged to prohibit charge of the battery in the event of the battery being at the
maximum charge.
12. The water treatment system as claimed in claim 11, wherein the controller is
arranged to enable the flashlight control circuit to energize the ultraviolet lamp in the
event of the power source being operational.
13. The water treatment system as claimed in claim 12, wherein the pump has
variable speeds.
14. A water treatment system comprising:
a housing;
a treatment subsystem treatment section having an ultraviolet (UV) lamp
contained within the housing;
a pump for moving water through the water treatment system;
a battery for powering the treatment subsystem treatment section;
a charger contained within the housing and connected to the battery; and
a manual generator connected to the charger;
wherein the battery is also arranged to power the pump,
wherein manual operation of the manual generator charges the battery to
provide power to both the treatment subsystem treatment section and the pump.
15. The water treatment system as claimed in claim 14, wherein there is provided:
a controller for regulating the operation of the water treatment system.
16. The water treatment system as claimed in claim 15, wherein there is provided a
lamp monitor for monitoring the UV lamp wherein the lamp monitor is coupled to the
controller.
17. The water treatment system as claimed in claim 16, wherein there is provided a
power source.
18. The water treatment system as claimed in claim 17, wherein the charger is
coupled to the controller.
19. The water treatment system as claimed in claim 18, wherein the controller is
arranged to selectively provide power to the charger from the power source.
20. The water treatment system as claimed in claim 14, wherein the manual generator
comprises a dynamo.
21. The water treatment system as claimed in claim 14, wherein the manual generator
comprises a spring generator.
22. The water treatment system as claimed in claim 15, wherein the controller is
arranged to prohibit energizing the pump in the event of the battery having insufficient
power to energize the UV lamp at a desired intensity.
23. The water treatment system as claimed in claim 22, wherein there is provided a
ballast circuit for energizing the UV lamp.
24. The water treatment system as claimed in claim 23, wherein there is provided an
enable circuit for energizing the ballast circuit.
25. The water treatment system as claimed in claim 24, wherein there is provided a
battery monitor circuit, the battery monitor circuit coupled to the battery and the
controller.
26. The water treatment system as claimed in claim 25, wherein there is provided a
flashlight.
27. The water treatment system as claimed in claim 26, wherein there is provided a
flashlight control circuit for energizing the flashlight.
28. The water treatment system as claimed in claim 27, wherein there is provided a
filter.
29. The water treatment system as claimed in claim 28, wherein there is provided a
battery charge circuit responsive to a power source to allow charging the battery by the
power source in the event of the battery being below a maximum charge.
30. The water treatment system as claimed in claim 29, wherein the battery charge
circuit is arranged to prohibit charge of the battery in the event of the battery being at the
maximum charge.
33. The water treatment system as claimed in claim 30, wherein the controller is
arranged to enable the flashlight control circuit to energize the UV lamp in the event of
the power source being operational.
32. The water treatment system as claimed in claim 31, wherein the pump has variable
speeds.

A water treatment system (5) has a battery (22) rechargeable by a manual
generator, thus eliminating the need for an external power source. The water treatment system
(5) uses the rechargeable battery (22) to power a pump (12) and a UV lamp (16). After the water
passes through a filter (10), the UV lamp (16) treats the water being pumped through the
apparatus. The system (5) optionally includes a flashlight (30), also powered by the rechargeable
battery (22).

A WATER TREATMENT SYSTEM

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