as required , detailed embodiments of the present invention are disclosed herein ; however , it is to be understood that the disclosed embodiments are merely exemplary of the invention , which may be embodied in various forms . therefore , specific structural and functional details disclosed herein are not to be interpreted as limiting , but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure . the drawings constitute a part of this specification and include exemplary embodiments of the present invention and illustrate various objects and features thereof . the following convention is used in describing various directions with respect to the inventive lid . the pan or cookware on which the lid is placed is assumed to be setting on a counter or other surface in an upright position for normal use . when the lid and cookware are in this upright , normal orientation , the following terms have the following meanings : the terms “ up ” or “ upward ” mean the vertical direction extending from the bottom of the cookware toward the top of the cookware and beyond ; the terms “ down ” or “ downward ” mean the vertical direction that is the opposite of the “ up ” or “ upward ” direction — i . e ., the vertical direction extending from the top of the cookware toward the bottom of the cookware ; the terms “ in ” or “ inward ” means the horizontal direction from the periphery or side of the cookware toward the center of the cookware ; and the terms “ out ” or “ outward ” means the opposite horizontal direction — i . e ., the direction from the center of the cookware toward the periphery or side of the cookware . if a part or object is “ above ” another part or object , the part or object is in a position or location that is in the upward direction from the other part or object ; thus , the lid of the cookware is above the bottom of the cookware when the cookware is in its normal upright position ; similarly if a part or object is “ below ” another part or object , the part or object is in a position that is in the downward direction from the other part or object ; thus , the bottom of the cookware is below the lid of the cooker when the cooker is in its normal upright position . fig2 and 3 show a lid assembly 1 for use on pots , pans , saucepans , and other cookware ( not shown ). the lid assembly 1 comprises a lid 2 , a handle 3 , a handle mount 4 , a handle retainer 5 , and a silicone band 6 . the lid 2 may be made of glass , metal , or some other suitable material that can withstand heating . the lid 2 has a rim 10 and a flange 15 that extends downward from the rim 10 and is sized to fit within the top of the pan ( not shown ) on which the lid assembly 1 is to be used . if the lid 2 is made of glass , as show in fig2 and 3 , the rim 10 may be made of metal , and the flange 15 may be formed as part of the rim 10 . if the lid 2 is made of metal or some other heat - stable substance the flange 15 may be formed as part of the lid 2 when it is fabricated . the lid 2 forms a central hole 20 in its top or crest . the handle 3 may be made of metal , plastic , or some other material that is a less efficient conductor of heat so that the handle remains cooler than the lid 2 or the pan when the pan and its contents are being heated . the handle 2 forms a central longitudinal hole 25 that has threads 30 as shown in fig4 and 5 . an upper part 35 of the hole 25 is narrower or smaller in diameter than the lower part of the hole 25 that is threaded . the handle 2 also forms a slot 38 in its side below the narrower or smaller diameter hole 25 , as shown in fig2 through 7 . as shown in fig6 and 7 , one end of an elongated slide 40 is attached to the inside of the handle 2 by a pin 42 so that the slide 40 can be pivoted horizontally about the pin 42 . a hole 45 is formed in slide 40 in a location such that , when the slide 40 is moved horizontally about the pin 42 , the hole 45 may moved to a position immediately below the narrower part 35 of the hole 25 in the handle . the opposite end of the slide 40 extends outward through slot 38 and forms a grip 50 that may be pushed or grasped from the outside of the handle 2 to move the slide 40 horizontally about pin 42 , thus moving the hole 45 in the slide 40 into or out of register with the upper , narrower part 35 of the hole 25 in the handle 2 . as best shown in fig3 , the outside of retainer 5 is threaded such that its threads 55 match the internal threads 30 of the hole 25 in the handle 3 . the retainer 5 may thus be screwed into the hole 25 of the handle . the retainer 5 also has a base 60 that can be used to screw the retainer into the hole 25 in the interior of the handle 3 and anchor the retainer 5 against the underside of the lid 2 when the retainer 5 is threaded into the hole 25 . the retainer 5 has an interior hole 65 which communicates with the interior of the cookware and the narrowed portion 35 of the hole 25 in the handle 3 . as shown in fig3 , and 5 , the handle mount 4 is used to space the handle 3 from the top of the lid 2 and fully cover the hole 25 in the lid 2 when the lid assembly 1 is fully assembled . it would , of course , be possible to make the handle mount 4 an integral part of the handle 3 , or to eliminate the mount 4 entirely , provided suitable means were used to seal and protect the hole 25 in the lid when the handle 3 and the lid 2 are fully assembled . the handle mount 4 has an internal hole 70 so that the retainer 5 may be inserted into and through the mount 4 and threaded into the hole 25 in the handle 3 . as shown in fig2 and 3 , the lid assembly 1 may be assembled by inserting the retainer 5 up thought the hole 20 in the lid 2 until the retainer base is flush with and anchored against the underside of the lid 2 . the handle mount 4 is then placed on the top of the lid 2 so that the threaded portion 55 of the retainer 5 extends up through the hole 20 in the handle mount 4 . the handle 3 is then threaded or screwed onto the threaded retainer 5 until it is tight , thus securing the retainer 5 , the mount 4 , and the handle 3 to the lid 2 . when the lid 2 is ready for use , the flexible silicone band 6 is placed around the flange 15 of the lid 2 . the lid 2 is then placed on the top of the cookware , the silicone band 6 sealing the lid 2 on the top of the cookware . so assembled , the interior hole 65 of the retainer extends from the inside of the cookware up to the narrowed portion 35 of the handle 3 , ending just below the slide 40 in the handle 3 . the slide 40 may then be pivoted by pushing the grip 50 of the slide 40 until the hole 45 in the slide 40 is in register with and immediately above the hole 65 in the retainer 5 and in register with and immediately below the narrowed portion 35 of the hole 25 in the handle 3 . if desired , the slide 40 may be pivoted in the manner described above so the hole 45 in the slide 40 is only partially in register with the hole 65 in the retainer 5 and the narrower part 35 of the hole 25 in the handle 2 . in such case the hole in the retainer 5 is still in register with the narrowed portion 35 of the hole 25 in the handle 3 , but the size or diameter of the combined registered hole or cavity in the retainer 5 , the narrow portion 35 of hole 25 , and hole 45 is effectively smaller than if the holes 45 and 65 are fully in register . in other words , if the hole 45 in the slide 40 is only partly in register with the hole 65 of the retainer and narrowed portion 35 of the hole 25 , the diameter of the combined holes 65 , 45 , and 35 is restricted or lessened in diameter by , and at the location of , the partial registering of hole 45 with holes 65 and 35 . when the lid assembly and cookware are so assembled , the cookware , containing water and food to be cooked , is placed a stove or other heating surface and heated . as the liquid in the cookware increases in temperature , water vapor is formed in the cookware and increases the pressure of the air and water vapor inside the cookware . eventually , the liquid contents of the cookware will boil , producing additional pressurized water vapor , air , and / or steam inside the cookware . the lid 2 , however , does not rock or move off of the top of the cookware , because the silicone band 6 seals the lid 2 on the cookware . and , due to the friction of the band 6 against the inside of the cookware , the band 6 prevents the lid 2 from being dislodged from the top of the cookware . instead , the pressurized air , water vapor and / or steam in the cookware move upward though the hole 65 in the retainer 5 , through the registered or partially registered holes 65 and 45 in the retainer 65 and slide 40 , respectively , up though the narrowed portion 35 of the hole 25 in the handle 3 , and out into the atmosphere above the lid 2 . as the pressurized air , water vapor , and / or steam escapes through the registered or partly registered holes 65 , 45 , and 35 , a whistling noise is produced by the rush of the air , water vapor , and / or steam through holes 65 , 45 , and 35 . this whistling noise signals the user that the liquid in the cookware is boiling , so that the user can reduce the heat being applied to the cookware in order to permit cooking to continue at optimal cooking temperature . the pitch and volume of the whistle may be controlled by adjusting the size of the combined registered holes 65 , 45 , and 35 . higher volume , lower pitch whistling may be produced by placing the holes 65 and 45 fully in register . lower volume , higher pitch whistling may be produced by placing the holes 65 , 45 , and 35 only partly in register . adjusting the size or diameter of the combined holes 65 , 45 , and 35 is accomplished by moving slide 40 to increase or decrease the size or diameter of the combined holes 65 , 45 , and 35 at the location of the partial or registration of hole 45 with holes 65 and 35 . thus , the user may adjust the whistling noise to the desired volume and pitch to most effectively signal or warn the user that the contents of the cookware are boiling and that the temperature of the stove or heating source to be reduced . it is to be understood that while certain forms of the present invention have been illustrated and described herein , it is not to be limited to the specific forms or arrangement of parts described and shown .
a cookware lid assembly having a whistling handle and a removable flexible sealing band that extends around a flange on the lid . the sealing band secures the lid to the cookware to prevent the lid from being dislodged from the cookware as pressure inside the cookware increases or as water in the cookware comes to a boil . the handle has a hole in it that generates as whistling noise when the pressure in the cookware increases . a movable slide in the handle allows the hole in the lid to be closed or remain fully or partly open . the slide also allows the volume and pitch of the whistle to be adjusted .