the overall construction of the toothbrush is shown m unfolded position in fig1 . there is a left half 1 and a right half 2 . each half has a handle section and set of tufts at one end so that the two halves may be joined to one another to form the whole brush . when the brush is sold , and before the brush is used , the two halves are in the unfolded position shown here . this will minimize the thickness of the brush so that it may be kept in an area with narrow size like that of a wallet or billfold . 8 shows the handle in fig2 . 12 shows a tuft in fig4 that comprises a plurality of bristles . before use , the toothbrush may be stored in this position with the two halves unfolded and joined along the spine 3 so that the left and right halves cam be folded against one another . when in this unfolded position , the toothbrush will present a very narrow thickness ( thickness of a half shown by line d in fig3 ). because of this narrow thickness , the toothbrush can be stored in a very narrow space . it is likely to rest upon the bottom edge of the handle 1 and so remain on a store shelf in an upright position . a large number of such toothbrushes and associated packaging may be stored in this manner , by resting upright , upon a store shelf . such a brush when in the unfolded position would be of such narrow thickness so that it could be carried within the wallet of the user . the brush would preferably be about 3 ″ or 4 ″ in length ( length shown by arrow b in fig2 ) and perhaps an inch or so in width ( width shown by arrow a in fig2 ). however , the thickness of the brush could be made to less than an inch ( arrow d in fig3 ; arrow c in fig4 shows the thickness of the brush when in the folded up position and ready to be used ). each half of the brush may be described as having a tuft end 5 and a handle end 6 . the tuft end contains tufts and the handle end is used to hold the brush . the length of the handle will thus define a line 3 that runs parallel to each of the handles . and the two halves of the brush will pivot along a line that is parallel to this line . so that each brush half will contain both bristles and a handle . it is preferred that the bristle end of each half be a single row of bristles so that when in the stored flat position ( see fig1 ) the toothbrush will only be one bristle thick . in other words it will present a line of single bristles . importantly , each set of bristles 5 on each half will project outward from the handle in the unfolded position . this orientation can be seen in fig1 . when the halves are folded in connection with one another they will form a bristle end that is only two bristles wide ( see fig4 ), in other words each single row of bristles has joined with the other to make a set of bristles two rows wide . in the illustration , each bristle end is a single row of 9 bristles , although the actual number of bristles may vary ( less than or more than 9 ) it is preferred that there only be one row of bristles for each bristle half 5 . when the halves are joined together the two sets of bristles will join to form one bristle head that is used to brush the teeth . again in the illustration , the bristle head as completed is 2 × 9 but other configurations are possible so long as the bristle head is two bristles wide when joined . likewise , the handle ends will join together to form one handle . fig3 shows the action of joining as seen looking down the length of the brush so that one can see each set of bristles joining with the other set so as to form the bristle head . there is a pivoting means shown at 9 . this pivoting means is in connection with both the left and right halve of the toothbrush such a pivot means should allow each halve of the brush to pivot in relation to the other . this connecting means may be referred to as a hinge since it acts in the same manner as a hinge would in allowing the halves to pivot in relation to one another . the connecting means would preferably be in connection with a portion of the handle portion of the brush although it is also possible that the hinge can be connected to the bristle portion of each half . there is a locking means shown as 10 and 11 in fig1 . this means may be as simple as a male and corresponding female shaped portion that will join to one another by friction . the male or pin 10 member should be of size and shape to allow the pin to fit in the hole or female member 11 and to secure the halves into a fixed relationship when the pin is locked into the hole . a male / female type of connection may be used for this locking means or some other means may be used . whatever means is used , it should allow the halves to be joined to one another and locked into place so that , when the halves are connected , the toothbrush will be of rigid form and the two halves will not separate from one another when the toothbrush is in use . the connection formed by 10 and 11 may be unlocked by the user when the toothbrush is not in use . this unlocking may be simply the action of the user pulling apart the two halves and so overcoming the frictional force of the male / female connection used or whatever type of connection is used . it is preferred that the handle of the brush be made of plastic and molded . it is thought that the bristles would be best made of nylon although other types of materials are possible for the handle and bristles without departing from the spirit of the invention . item 12 in fig4 shows a close up view of a single bristle which of course may consist of numerous “ hairs ” or other thread like members . an intermediate portion 15 may be used in addition to the two halves . the intermediate portion would be of similar construction to the halves 6 and 7 , but it would not be in physical connection with them . in this case , it would have a second set of male / female shaped members ( shown as 13 and 14 in fig5 ) that would join to the corresponding male and female members on the halves so that the intermediate section may be joined to the two halves and so construct a tooth brush that is 3 bristles in width and of course would have greater width and thickness than in the case with just the two halves .
a disposable toothbrush that can folded and unfolded upon it self is shown and described . the toothbrush is constructed of two folding sections that each contain bristles each half can join to the other half and so provide a rigid toothbrush for brushing . prior to use , the toothbrush is in the unfolded position so that the bristles in each of the brush lie flat . this orientation presents a toothbrush with very narrow width for ease of storage .