with reference to fig1 there is shown a cookware vessel 1 of the present invention . the vessel 1 may be of a shape such that it can easily nest with other , like vessels 1 . this will enable the efficient storage of a set of vessels 1 which may be particularly important in situations where storage space is at a premium such as in apartments , boats , caravans etc . in the preferred embodiment the vessel 1 is of a generally square plan shape with rounded corners as shown in fig1 . the cookware vessel 1 may be manufactured from any suitable material or combination of materials . possible combinations of materials are outlined below : stainless steel exterior ( magnetized for induction ), copper or aluminium inside and a stainless steel interior , or stainless steel with an aluminium base ( disk ) stamped on , or annodised aluminium exterior and stainless steel interior . it should be appreciated that other combinations of materials may also be used . the cookware vessel 1 may or may not include a coating layer such as teflon or similar . the cookware vessel 1 may or may not be suitable for induction cooking . the cookware vessel 1 includes at least one handle attachment location 2 which may be an indent in the rim of the vessel 1 . preferably there are four handle attachment locations 2 which are located centrally of each side of the vessel 1 . the handle attachment locations 2 are suitable for removable attachment of the handle 3 . when the vessel 1 is not in use , it may be stored in an efficient manner with other , like vessels 1 by removing the handle 3 from the attachment location and nesting the vessel 1 with the other like vessels 1 . the complementary shape of the other , like vessels 1 enables the nesting . fig2 shows an alternatively shaped vessel 1 which may be used as a frying pan for example . the vessel 1 of fig2 only differs in its shape , it may be manufactured from the same materials and may also include four handle attachment locations 2 . fig3 to 6 show different views of an exemplary cookware vessel 1 of fig1 without the handle 3 attached to an attachment location 2 . fig7 to 11 show different views of an exemplary vessel 1 ( i . e . a frying pan ) of fig2 without the handle 3 attached to an attachment location 2 . the handle 3 is shown in more detail in fig1 to 15 . the handle 3 may include a die cast tongue 4 and knob 5 . the tongue 4 and knob 5 are positioned relative to one another in a way to facilitate attachment of the handle 3 to an attachment location 2 of a vessel 1 . when the handle 3 is attached to the attachment location 2 it is not able to slide along the rim 6 of the vessel 1 , this is due to the attachment location 2 being recessed slightly from the rim 6 that surrounds it . the tongue 4 may be moveable with respect to the knob 5 to allow for attachment to the attachment location 2 . once positioned on the attachment location , relative movement between the tongue 4 and the knob 5 may allow for locking of the handle to the vessel 1 . with reference to fig1 there is shown a lid 7 suitable for use with a vessel 1 . the lid may include a band 8 which may be placed around the edge of the lid 7 . the band 8 may be silicone or another similar material and helps create a seal with the vessel 1 . sealing the vessel 1 may be particularly important for creating an air tight environment for storing food inside the vessel 1 . the lid 7 may be stainless steel or other suitable material and may include a vent 9 , which allows for the venting of gases from the vessel 1 during cooking ( i . e . when the band 8 is not located on the lid 7 ). the band 8 covers the lid vent 9 when it is located on the lid 7 . the lid 7 may also include a handle 10 . the banded lid can be used to cover the vessel during cooling and refrigeration thereby to ensure a partial vacuum can develop above the vessel contained foodstuff . an alternative embodiment of the handle of the present invention will now be described with reference to fig1 to 22b . fig1 shows complementary and preferably mirror imaged components however able to be held together to define by preferably a region 12 of each a proximal jaw . each of the components 11 when held together in the assembled form such as shown by any suitable screws or other means is adapted to guidably locate a slide 13 and a cam lever 14 to be located by its pivot 15 with a pin 16 from regions such as 17 from each of the components 11 . springs 18 are to act on formations 19 of the slide at one end and on the pin 16 at the other end . the nose region 20 of the lever is a transition point between two substantially stable conditions for the over centred spring action between the lever and the slide 13 such that when in the condition as shown in fig2 a there is stability that accords with gripping of a cookware component and there is no tendency for the lever to fall away and such that when in the condition as shown in fig2 b ( the springs not being shown for ease of depiction ) is stable in a condition able to be disengaged from a cookware vessel or to be inserted into such cookware vessel . fig2 and 24 show that the vessel 1 , even when lidded , can be used in a vented or non - vented manner by a lid assembly . fig2 show a lid assembly in accordance with the present invention where a lid assembly 21 has a slide ( eg . of plastics material or a metal ) actuable under the knob member 22 to encroach over the scalloped away region which is a relief 23 of the lid body proper 24 so as to reduce venting between the region of the handle ( in that case departing somewhat from that previously described ). as can be seen the knob 22 can be used to move the associated slide 25 from a condition that does not encroach upon the relief 23 to a position as in to the right in fig2 where the whole of the relief 23 has been sealed by part of the slide 25 . in an alternative , preferred embodiment of the handle 3 a single spring 30 may be provided internally of the slidable member 13 to bias the slideably member towards the nose region 20 of the lever 14 . fig2 a corresponds with a locked condition in which the jaw pair 12 and 13 are closer together . fig2 b corresponds with an unlocked condition in which the jaw pair 12 and 13 are further apart . the lever 14 is articulatable between two stable conditions , corresponding to the locked and unlocked conditions of the jaw pair 12 and 13 . a cam profile exists adjacent the nose region 20 of the lever 14 such that as the lever 14 pivots between its two stable conditions the postion of the slide 13 is adjusted . the slide 13 on which the cam profile acts can be caused to slide , against the bias of the spring 30 , to the locked condition of fig2 a , and can be biased to the unlocked condition of 26 b when the cam profiled of the nose region moves to position shown in fig2 b . a lever release button 31 may be provided to cause the lever 13 to pivot . alternatively , the lever may be pushed down at its end region 32 to cause the pivoting . a sleeve 33 may be provided on the inside of the fixed jaw 12 along with inserts 34 that may be provided on the end of the sliding member 13 . the sleeve 33 and inserts 34 will engage with the vessel 1 when a handle is used to grip a vessel 1 and is in the locked condition . the sleeve and inserts may be made of silicon or any other suitable material . with reference to fig2 an exploded view of the preferred handle assembly is shown . the various parts and preferred materials for those parts are listed below : 3 — handle body ( nylon ). 14 — lever ( nylon ). 20 — nose region ( stainless steel ). 13 — sliding member of the jaw pair ( stainless steel ). 12 — fixed jaw ( stainless steel ). 31 — lever release button 31 ( stainless steel ) 33 — fixed jaw sleeve ( silicon ) 34 — sliding member inserts ( silicon ) it should be appreciated that the handle 3 may be assembled in a different manner and from different components as shown with reference to fig2 . it should also be appreciated that the materials of the components may differ from what is listed above , as would be apparent to a person skilled in the art . persons skilled in the art will appreciate how handle assemblies for example as shown in fig2 can be engaged to the attachment location 2 of cookware vessels . fig2 shows a cookware vessel 1 with an associated handle 3 and lid assembly 21 . it should be appreciated that the handle 3 is suitable for attachment to any of the attachment locations 2 of the cookware vessel and indeed any attachment location 2 of a like cookware vessel irrespective of its size . once a handle is located on a cookware vessel 1 , the associated lid 21 may be placed onto the vessel such that the relief 23 corresponds with the attachment location 2 where the handle is located . the knob 22 can then be used to adjust the slide 25 depending on the amount of venting that is desired . when no handle is attached to a cookware vessel , the slide 25 of a lid 21 can be adjusted to substantially close the relief 23 . such a lid 21 can then be placed on a corresponding vessel to substantially seal the vessel . with reference to fig3 and 31 it is evident that the cookware vessels , lid assembly 21 and handle of the present invention allow for efficient nesting of the various components . the cookware vessels 1 may sequentially nest , in order of their size , for efficient stowage . even with their associated lid 21 located thereon , the lidded vessels can nest efficiently as shown in fig3 and 31 . to enable efficient lidded nesting of the cookware vessels , the lids 21 may be provided with handles 34 that define upwardly extending grippable regions 35 and hollow regions 36 located substantially below the grippable regions 35 . preferably the hollow regions 36 of the handles 34 are complementary with the form of the main lid body when a handle is attached thereto . in this respect , the main lid body may have a convex portion centrally of a concave portion . the convex portion being suitable for accepting the hollow region 36 of a handle when such a handle is attached thereto . when the lidded cookware vessels are sequentially nested , as shown in fig3 and 31 , the grippable region 35 of an inner nested vessel may be at least partially received in the hollow region 36 of a more outwardly nested vessel . this may reduce interference between the lids and therefore allows for efficient nesting of a set of cookware vessels and their associated lids . the handle 3 may fit within the most inwardly nested vessel as shown in fig3 . it is envisaged that sets of two or more cookware vessels may be provided with correspondingly sized lids and a handle . such a set has the benefit whereby the handle can be used on any of the vessels of the set , and the lidded vessels may nest for efficient stowage as shown in fig3 and 31 . such a cookware set lends itself to situations where storage space is at a premium such as in apartments , boats , caravans etc . where in the foregoing description reference has been made to elements or integers having known equivalents , then such equivalents are included as if they were individually set forth . although the invention has been described by way of example and with reference to particular embodiments , it is to be understood that modifications and / or improvements may be made without departing from the scope or spirit of the invention .
a cookware assembly or set comprising or including at least one cookware vessel of a substantially square peripheral exterior and interior form when viewed in plan , wherein the vessel has an attachment location on at least one of the four sides , the attachment location being a relief in the vessel &# 39 ; s rim suitable for handle engagement , and a handle selectively engageable at the or any one of the attachment locations , the handle with both proximal and distal end regions having a pair of jaw elements at the proximal region for facilitating engagement to an attachment location such that a first jaw of the jaw pair locates substantially inside the vessel and a second jaw of the jaw pair locates substantially outside of the vessel , and a lid able to fit on the cookware vessel and to close , or at least substantially close , the cookware vessel .