fig4 is a top view of the enclosure as flat stock sheet metal with long dashed lines representing 90 degree bends , & amp ; short dashed lines representing smaller bends . note : sheet metal is used as an example only . the enclosure can be manufactured by a variety of methods & amp ; materials . fig5 is a side view of the enclosure lid as flat stock sheet metal with long dashed lines representing 90 degree bends , & amp ; short dashed lines representing smaller bends . fig8 is an axonometric drawing of the preferred embodiment of this invention showing all parts required for assembly . this invention is made by modifying heads of typical keys 11 - 13 to one similar head 14 , attaching the keys with a screw assembly 17 acting as a hinge , & amp ; housing the keys into the enclosure 15 as shown in fig8 . depending on the number of keys used & amp ; the width of the enclosure , spacers 20 may be required to compensate for the extra space on the screw assembly . spacers can range in width with a diameter less than or equal modified key heads . the spacers are used to ensure a snug fit to comply with any key variation . scenario 1 — the preferred embodiment width is based on the number of keys . the enclosure fig6 will allow up to eight modified keys . however , some keys are slightly wider than others in which only seven keys might fit on the screw assembly . in this situation there is likely to be some unwanted extra space in which a spacer could be placed on the screw assembly to compensate . scenario 2 — using a wider enclosure with only four keys , there is considerable extra space in which additional spacers or one larger spacer could be used . if there is still unwanted movement on the screw assembly , a thin spacer could be used to compensate . if the assembly is too tight , a thin spacer can be removed . the screw assembly is optimum when modified keys swivel freely without lateral movement . once the modified keys have been properly adjusted within the assembly & amp ; the screw has been secured , the enclosure lid 16 can then be installed . to install the enclosure lid simply match up the rounded end of the enclosure lid to the rounded end of the enclosure & amp ; secure into place with rivets 18 on either side of the enclosure lid as shown in fig8 . when this invention is assembled it is ready for operation as described below . this invention is designed to minimize & amp ; simplify the burden of ordinary key assemblies . its operation follows suit with its design in terms of simplicity . to employ a key for use in the preferred embodiment shown in this application , simply click the enclosure lid 16 open as shown in fig7 by pulling enclosure lid away from enclosure 15 at open end 24 . flick the enclosure 15 so the modified keys 14 rotate on the screw assembly & amp ; are all exposed , pick the key to be used & amp ; hold while rotating the assembly so the remaining keys rotate back into the enclosure . finally , rotate the enclosure lid to the original position & amp ; click into place . now the required key is ready for use as shown in fig6 . additional embodiment 1 is very similar to the preferred embodiment . the main difference is that there is no enclosure lid . instead it has two separate enclosures 15 that are held together by a connector 23 . fig1 shows additional embodiment 1 with one of the enclosures open & amp ; one key employed for use . to use additional embodiment 1 simply pull the enclosures apart , flick the enclosure with the desired keys until they are all exposed , pick the desired key & amp ; hold while rotating the assembly until the other keys are back in the enclosure , then push the two enclosures back together . additional embodiment 2 is an alternate form of this invention . it can be similar in size as a credit card & amp ; can easily be carried inside a wallet for everyday use or as a set of spare keys . fig1 shows a front view of additional embodiment 2 with one modified key 14 employed for use . the key card uses sliders 22 to employ each key & amp ; hinges 21 to fold the card so the length of the card won &# 39 ; t be an obstruction when using the keys in tight areas . use of additional embodiment 2 is very simple . fig9 - fig1 demonstrate the actions required for use . the first step is to slide the desired key out of the enclosure using the slider assembly as shown in fig1 . then fold the card as shown in fig1 until each enclosure is fully collapsed as shown in fig1 . now additional embodiment 2 is ready for use . to my knowledge , there are no keys currently available that are unable to be modified to be compatible with this invention . there are many possibilities for this invention , but as stated in claim 1 there are only three simple parts to the device . there are limitless alternatives in regards to size , shape , & amp ; material of these three simple guidelines . there is also an option of adding physical & amp ; technological features to the key . the following lists some examples : push - button assembly to employ each key in like a switch blade this invention is a logically superior alternative to standard everyday loose key assemblies . it follows suit with the surging market trend to make gadgets smaller & amp ; more compact . there have been advancements in the field of entry systems such as key card sensor locks & amp ; door entry sensors ( rfid ). computers , cell phones , & amp ; music players are getting increasingly smaller as their speed & amp ; memory is increasing while cellular phones are combining with cameras , pda &# 39 ; s , & amp ; internet applications . meanwhile , standard key assemblies are getting larger and increasingly bulky with unnecessary key chains , alarm remotes , garage door openers , & amp ; high - end car keys increasing in size . this irony can has become an unrecognized paradox especially since every consumer &# 39 ; s most essential gadget is his or her set of keys . there are numerous specificities , including various embodiments , optional physical enhancements , & amp ; technological upgrades that are illustrated in this application . the descriptions herein should not limit the scope of any component of this invention but illustrate some of its preferred embodiments . for example , the enclosure & amp ; related mechanisms could take on many different shapes , materials , & amp ; sizes that will enable unlimited function of this invention to suit the needs of each individual user . therefore , the scope should be determined by the appended claims & amp ; their legal equivalents , & amp ; not by the examples given in this application .
an enclosure 15 to hold a modified key 14 or set of keys that allows any unused keys to be conveniently stored inside the enclosure while the desired key is maneuvered for use when required by the user requiring the enclosure itself to replace the function of a standard key head .