fig1 and fig2 show the exterior of a preferred embodiment of the invention . all or just some of the individual features depicted and described may actually be employed in any eventual embodiment . the container has a main body 30 . filling cap 1 , folded drinking straw 2 , and vent cap 20 appear on top of the device . the clear water - tank window 17 with floating indicator shows the level of water remaining in the internal water tank . signal led 3 informs the user of whether the heater is off or on , and of whether or not the water in the heating chamber has reached target temperature . power switch 4 turns off the heater whenever the user desires . temperature display 8 indicates current temperature of water in the heating chamber . temperature set switch 8 a allows the user to set the target temperature for the water to be heated . push - button valve control 6 moves cold water from the water tank into the heating chamber , and turns the heater on . valve control button 7 moves the hot water from the heating chamber into brewing cup 5 , turns the heater off , and turns on the illuminating leds that light brewing cup 5 and water - tank window 17 . visible through the clear walls of brewing cup 5 is tube filter 15 at the end of central tube 14 , which carries infusion to drinking straw 2 and the mouth of the user when he sucks . fig3 shows upper and lower valve - control buttons 6 and 7 , and power jack 9 , where an ac power cord or an automobile power cord can be plugged in . drinking straw 2 is shown here in the unfolded position — the position in which it is ready to use . fig4 , a sectional front view , shows water tank 10 at the top , heating chamber 11 and battery 13 in the middle , and brewing cup 5 at the bottom of the device . central tube 14 carries the prepared beverage up from tube filter 15 at one end , to folding drinking straw 2 at the other . cold water is introduced into water tank 10 via filling hole 1 a . water is released from water tank 10 and passes through hole 18 a into heating chamber 11 by means of valve 6 a , which is normally closed , but which is opened when the user actively depresses valve control 6 . when the user releases valve control 6 , valve 6 a closes again . valve 7 a is identical to valve 6 a , and serves to move the hot water from heating chamber 11 through hole 19 a to brewing cup 5 , where it inundates the mate or tea leaves to achieve infusion . in fig4 , valves 6 a and 7 a are depicted as push - valves fitted with springs that automatically reclose the valves . in alternative embodiments , the valves may employ any of a number of opening and self - closing mechanisms , whether rotary , butterfly , gate or other valve designs , to enable easy one - handed actuation . in an alternative embodiment of the invention , for greater ease of use , mechanical push - buttons 6 and 7 would be replaced by electrical switches that activated electrical motors to open and close the valves . in another alternative embodiment , mechanical push - buttons 6 and 7 would be replaced by a single electrical switch that would initiate a programmed sequence to open and close valve 6 a , heat the water to target temperature , and open and close valve 7 a in response to a single button push . heating chamber 11 is where the cold water is heated to target temperature by means of heating element 12 . in fig4 , the heating element is depicted as a coil inside the heating chamber . in alternative embodiments , the heating element might have any shape . the heating element might also be on one or two sides of the heating chamber , or may surround it completely like a sleeve , or assume any of a number of configurations outside of the heating chamber , thereby avoiding direct contact with the water itself . the same variability of form in temperature sensor 16 is also encompassed by this invention . the heating chamber itself can vary in shape , orientation and size among possible embodiments , and may be tubular , horizontal , or more narrow than depicted here . vent tube 22 starts as a hole in the top of heating chamber 11 , emerges from the top of divider 18 , and then rises next to vent tube 21 to attach to vent cap 20 . fig4 and fig5 show internal battery 13 , which in various possible embodiments may consist of multiple individual connected cells . battery 13 , or its multiple connected constituent cells , may be located in a battery chamber that surrounds heating chamber 11 along the inside wall of the device &# 39 ; s middle section . the concentric placement of heating chamber and battery cells ensures the overall balance and stability of the device when set down or held . illuminating led 24 in fig6 allows the user to view the amount of water remaining in water tank 10 above it ( through water - tank window 17 ), even in a dark setting . illuminating led 25 similarly permits the user to see the level of water introduced into transparent brewing cup 5 . fig6 depicts leds 24 and 25 each as a single led . in alternative embodiments , the illumination for the brewing cup could be a series of leds distributed evenly along the bottom rim of divider 19 , or a continuous tubular ring light set into the rim , that would shine light evenly around the circumference of transparent brewing cup 5 below it . fig6 further shows brewing cup 5 vented by venting tube 21 , which rises from a hole in the bottom of divider 19 to the top of divider 18 . there , venting tube 21 joins venting tube 22 and rises to attach to vent cap 20 . fig6 and fig7 show sectional views of drinking straw 2 . drinking straw 2 folds and unfolds by pivoting on posts extending into recesses in the device &# 39 ; s top . when unfolded for use as shown in fig7 , the channel inside drinking straw 2 aligns with the end of central tube 14 , and user can sip beverage up from brewing cup 5 . when drinking straw 2 is folded for travel ( fig6 ), its inner channel does not align with central tube 14 , and no liquid can leak out . fig9 a shows vent cap 20 in the closed position . fig9 b shows vent cap 20 in the open position . fig9 c shows vent tubes 21 and 22 and vent hole 23 terminating in the underside of vent cap 20 . fig1 is a perspective view of brewing cup 5 . fig1 shows charging base 26 , which allows the device to recharge internal battery 13 , or to operate directly from the household outlet or automobile cigarette lighter into which charging base 26 is plugged . when the device is set down on charging base 26 , electrical contacts on the bottom of brewing cup 5 engage complementary contacts 27 in the charging base to make the connection . for cordless use without the internal battery , a user could plug charging base 26 into a household outlet or automobile cigarette lighter , place the device on the charging base to heat water , and then remove the device from the base to consume the hot beverage while roaming cordlessly . he could return the device to the charging base to heat more water when ready for the next round . in alternative embodiments , the charging base could have other shapes , orientations , and means of coupling with the device . the electrical contacts in the charging base and device could be rings , bars or plates , among other possibilities . also , the contacts on the device might be located on the side of the main body of the device instead of on the bottom of brewing cup 5 , and the charging base , or part of it , could be vertical , inclined , or totally flat . fig1 shows an alternative , more affordable embodiment of the invention that does not heat water , but still allows the fresh brewing and dispensing of hot beverages on - the - spot within a portable , integrated spill - proof unit . fig1 , an internal view , shows miniature power cell 28 and illuminating led 25 . since cell 28 would only power the led and not heat water , it would be extremely small , inexpensive and disposable . the user would heat water by other means ( typically , a stove ), and then fill this embodiment with water already hot . this embodiment would dispose of a single push - button valve control . when the user pushed the valve control , he would release hot water from water tank 10 into brewing cup 5 , and also turn on illuminating led 25 . by looking through the clear walls of brewing cup 5 , he would see when the cup was full and then release the button to close the valve and turn off the led . because the water in water tank 10 would be poured in already hot , and have to remain hot until ready for use , the tank is enclosed in thermal insulation 29 . as previously mentioned , the number and configuration of illuminating leds for the brewing cup may be different from those shown in fig1 . in an alternative non - heating embodiment of the invention , the illuminating led may be powered by inexpensive , self - charging solar cells deployed on the outer surface of the main body . in another possible embodiment , there would be no illuminating led or power cell at all . in this last - mentioned embodiment , the user would gauge the water level in the brewing cup by available light alone , or the valve would dispense a fixed dose of water every time . in operation of a preferred embodiment , brewing cup 5 is unscrewed and filled with a suitable amount of mate or tea leaves , or other brewing ingredient . the brewing cup then is reattached to the main body , drinking straw 2 is unfolded for use , and vent cap 5 is opened . water tank 10 is filled by unscrewing filling cap 1 and adding cold water through filling hole 1 a . to heat the water , power may be provided in a number of ways . for example , a power cord may be plugged into a household electrical outlet or automobile cigarette lighter at one end , and power jack 9 at the opposite end . alternatively , the device may be set into a charging base 26 that is connected to outlet or automobile lighter . alternatively , the device may be powered by self - contained battery 13 . once power is supplied , the desired water temperature is set with switch 8 a . then , valve control button 6 is activated to release water from tank 10 into heating chamber 11 through valve 6 a , and to activate heating element 12 . signal led 3 blinks to indicate that heating chamber 11 has been filled and heating element 12 is on . the current temperature of water in the heating chamber is shown on temperature display 8 . when the water in heating chamber 11 reaches target temperature , led 3 changes color and / or an audible signal sounds . then , valve button 7 is engaged to release the hot water from heating chamber 11 into brewing cup 5 through valve 7 a , to turn off heating element 12 , to turn off signal led 3 , and to activate illuminating leds 24 and 25 . at this point , the brewed beverage is ready to drink via filter 15 , central tube 14 , and external folding straw 2 . the steps for heating , brewing and sipping above can be repeated as desired until a full serving is consumed . in an alternative embodiment of the invention , an automatic cut - off function would automatically turn off heating element 12 when the target water temperature was reached . in an alternative embodiment employing a single electric switch and program instead of 2 mechanical push buttons , multiple steps above would be replaced by a single step : “ push electrical switch .” in an alternative embodiment employing a heating chamber and heating element configured to provide “ instant heating ” of a small , continuous stream of water , the number of steps would be reduced similarly . in alternative economical embodiments of the invention that would not heat water , but instead brew on demand with water previously heated by other means , the method of use would be simpler still . the foregoing disclosure has been set forth merely to illustrate the invention , and is not intended to be limiting . since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art , the invention should be construed to include everything within the scope of the appended claims and equivalents thereof .
a hot beverage making container having a main body that includes a water tank and a heating chamber separated by a first valve . a removable brewing cup is connected to the main body and is separated from the heating chamber by a second valve . a tube extends from the brewing cup , through the main body , and out of the main body .