Disposable Dental Floss Cassette Dispenser System

The present invention relates to dental floss dispensers and systems for conveniently delivering clean, dry dental floss to users thereof.

Dental floss is widely used as a means of interdental cleaning which supplements brushing. Although flossing, or the process of cleaning between one's teeth with dental floss, is becoming very common, many people find it inconvenient to use their floss regularly for lack of regular flossing habits and lack of convenient access to dental floss.

The makers of dental floss dispensers have, for this reason, tried their best to provide small containers of dental floss which may be easily stored or carried with the user. A good example is the device disclosed in U.S Pat. No. 4,646,766 by Stallard which is easily transported in a user's pocket or stored in a medicine cabinet in one's bathroom. Somewhat larger devices, such as that disclosed by Aronson (U.S. Pat. No. 3,246,815) were disclosed earlier and are somewhat larger, but provide the same general function. It will be appreciated, however, that the convenience of a floss dispenser resulting from its small size is relative, and that no matter how conveniently sized a dispenser is, it is always easy to put away in a place where it is easily forgotten.

Other dispensers have been designed so that one's dental floss is not so easily forgotten. For example, Shalek (U.S. Pat. No. 1,455,673) discloses a dental floss dispenser which is attachable to a flat surface such as a bathroom wall, and is designed to remain in one place where it can be visible, and therefore especially convenient and present in one's mind when the user returns to that one place. In this way, the Shalek dispenser provides a convenient reminder to the user to floss his or her teeth whenever the user returns to the place where the dispenser is attached. Unfortunately, the receptacle is designed to accept an uncovered spool of floss which can result in problems related to lack of dryness or cleanliness when transferring new spools of floss into the receptacle to replenish the floss when it has run out. Accordingly, a need exists for a dental floss dispenser system which can be attached to a wall and can provide a renewable source of dental floss provided in a convenient manner which will assure users that the floss is clean and dry. The present invention provides a solution to this and other problems and also offers other advantages over the prior art, and solves other problems associated therewith.

Accordingly, it is an object of the present invention to provide a convenient dental floss dispenser system which may be attached to a bathroom wall where it will be available for convenient use at all times of the day. The dispenser includes a support member designed to receive a renewable dental floss cassette or floss container which is a self-contained unit which will offer users confidence that the floss contained therein is clean and dry. In order to achieve this object, the present Inventor has developed a floss dispenser for attachment to a surface. The floss dispenser comprises self-contained disposable cassette housing means for enclosing dental floss gathered for storage therein prior to being dispensed, and a support member for attachment to the surface. The support member includes support means for supporting said disposable cassette means. The support member preferably includes receiving means for receiving said disposable cassette means such that said cassette means can be easily removed and replaced. Said cassette means preferably includes a dental floss container comprising a housing. The housing provides an enclosure for substantially cleanly storage of dental floss. The housing includes introduction means for introducing dental floss into the enclosure, and a floss dispensing opening through which the floss can be passed and withdrawn over time. Preferably, the housing includes orientation means for orienting the housing with respect to the support member. In addition, the housing preferably includes a receptacle and cap means which can be joined to form the housing which is a single two-piece unit wherein the cap is joined to cover the receptacle.

It is the object of the present invention to provide a floss dispenser which can be attached to a bathroom wall, or the like, which includes a support member which supports a replaceable self-contained floss container or cassette. This will enable the user to replace the floss container with a new one when the floss in the first container is used up. The support member may be used over and over again to support any number of new containers which are preferably available for sale at one's neighborhood drugstore or dentist's office. It will be appreciated that the preferred container provides a self-contained enclosure containing a sufficient amount of floss to last for a period of time. Because the container is self-contained, the user may be ensured that the floss is clean, and has not been contaminated either during shelf storage, or during transfer from a package to the support member. Furthermore, because the container can be frequently replaced, one needn't be uneasy about the buildup of dust or the like on top of the container. If it appears that the container is dirty, it may be easily replaced.

The cassette system ensures cleanliness by keeping the floss away from contamination carried in the air or in fluids which may come into contact with floss containers. Furthermore, the floss is not exposed to the touch of one's hands prior to use. Because of the very small floss dispensing openings of the most preferred embodiments, very little air, and virtually no fluids pass into the floss container enclosure during normal use. Therefore, the floss is protected from airborne contaminants such as viral and bacterial particles or aerosols, hair spray, perfumes or other airborne contaminants which can come into contact with the floss through the air. Also, because one can insert the floss container into the support member without handling the floss, the disease chain, which might otherwise link the person inserting the floss into the floss dispenser with the user of the floss, is broken because the person who inserts the floss container in the support member does not actually handle the floss because it is enclosed within in the self-contained floss container. The container is also reasonably water tight thereby providing some assurance that disease carrying moisture will not seep into the container and contaminate the floss contained therein.

It is another object of the present invention to provide a floss dispenser which may be used over and over again and yet provide many different types of floss. For example, a user may be using waxed floss, and may wish to change to unwaxed floss, or flavored floss such as mint flavored floss, dental tape, shred resistent floss, or the like. If the user owns one of the present dispensers, he or she can simply remove the container in the support member and replace it with a new container containing the particular type of floss which the user wishes to switch to. In fact, in preferred embodiments of the present invention, the support member is designed to accommodate more than one floss container so that a user or a family of users may select between more than one kind of floss which is available from the same dispenser. Alternate embodiments are combined with room fixtures such as a brush holder, soap dish, night light or the like which may provide for convenient use of space and/or marketability.

In addition to the convenience provided by the ability to dispense many different types of floss from the present floss dispenser at different times, or preferably at the same time, convenience is also provided by locating the floss in a readily accessible location for use. The floss dispenser of the present invention can be wall mounted in the bathroom or can be structured to stand on a shelf or any other flat surface. Instead of being inside a drawer, or a medicine cabinet, the floss can be located in a location chosen for its enhanced visibility in order to provide a convenient reminder to the user or users to make use of the floss and, thereby, improve their personal hygiene habits and the health of their teeth and gums at the same time.

It will be appreciated that the floss cassette or container can be easily mass produced to lower the unit cost of each container. It will preferably be made of a synthetic polymer material which is suitable for use in injection molding manufacturing processes. Since the container has no working parts and the materials needed to make the parts can be relatively inexpensive, it will be relatively economical. It will, therefore, provide for a clean, efficacious, economical, and convenient system for providing dental floss to users.

These and various other advantages and features of novelty which characterize the present invention are pointed out with particularity in the claims annexed hereto and forming a part hereof. However, for a better understanding of the present invention, its advantages, and any other objects obtained by its use, reference should be made to the drawings which form a further part hereof and to the accompanying descriptive matter, in which there is illustrated and described preferred embodiments of the present invention.

In the drawings, in which like reference numerals indicate corresponding parts of preferred embodiments of the present invention throughout the several views,

FIG. 1 is a perspective view of a floss dispenser in accordance with the present invention;

FIG. 2 is an exploded perspective view of the floss container shown in FIG. 1;

FIG. 3 is a sectional view of the floss dispenser of the present invention shown in FIG. 1 as seen generally from the line 3--3;

FIG. 4 is a side view of a cap of the container as seen from the line 4--4 of FIG. 2;

FIG. 5 is a side view of the cap as seen from the line 5--5 of FIG. 2;

FIG. 6 is a sectional view similar to that shown in FIG. 3 of an alternate floss dispenser including an alternate floss container; and

FIG. 7 is perspective view of an alternate embodiment of the floss dispenser of the present invention.

Referring now to the drawings, and to FIGS. 1-2 in particular, a dental floss dispenser 4 for attachment preferably to a substantially flat surface 6 is shown. The dispenser 4 includes a support member 8 for attachment to the surface 6 and a self-contained disposable cassette housing mechanism 10 or dental floss container 10 for storage of dental floss 12 or the like. As shown in the exploded perspective view shown in FIG. 2, the dental floss container 10 includes a housing made up of a receptacle 14 for receiving gathered dental floss, preferably a spool 16, and a cap 18 having pins 20 which are designed to fit into pin receiving openings 22 on an upper edge 24 of the receptacle 14. The cap 18 and the receptacle 14 are designed so that they remain together as a single two-piece unit or housing 11 once the receptacle 14 has received a spool 16 of dental floss 12 during manufacture or assembly, and the cap 18 has been placed on the receptacle 14. The fit between the pins 20 and the pin receiving openings 22 is an interference fit which makes it difficult to remove the cap 18 from the receptacle 14 once it is placed on the receptacle 14. One can remove the cap 18 from the receptacle 14, however, if one exerts sufficient force to pull the pins 20 out of the pin receiving openings 22 which provide a measurable resistance to the removal of the pins 20 therefrom. It will be appreciated, however, that any other known securing methods can be used in alternate embodiments of the present invention to secure the cap 18 to the receptacle 14. Such methods include the construction of a male-female joint having an interference fit to join the cap 18 to the receptacle 14, providing a pressure sensitive adhesive material to seal the joint therebetween, or the like.

The support member 8 includes a floss container receiving opening 30 whose inner wall 32 is designed to receive and support the container 10. The inner wall 32 of the opening 30 is slightly beveled so that the inner wall 32 specifically supports an angled outer edge 36 of the cap 18. A wedge-shaped slot 40 in the inner wall 32 is designed to receive and reciprocate a roughly triangular protrusion 42 on a back side of the cap 18 as shown in FIG. 5. The slot 40 and the triangular protrusion 42 must be in general alignment in order to allow the container 10 to fit properly into the floss container receiving opening 30. When the slot 40 and the protrusion 42 are in proper alignment and the container 10 is properly seated in the floss container receiving opening 30 a cap channel 46 in the cap 18 is aligned with a support member channel 48 in a front edge 50 of the support member 8 to facilitate the withdrawal of dental floss 12 from the container 10. The support member 8 also includes a pressure sensitive adhesive backing 54 (not shown, see FIG. 3) which allows one to easily attach the support member 8 to a substantially flat surface 6 such or a bathroom wall 6 by pressing the backing 51 against the surface 6. It will be appreciated, however, that any other known attachment methods can be used to attach alternate embodiments of the present invention to respective surfaces. The support member 8 is also includes a plurality of toothbrush receiving openings 68, designed to receive and retain a toothbrush 70.

Referring now also to FIGS. 3, 4 and 5, the dental floss 12 is removed from an enclosure 52 within the housing 11 created by the union of the receptacle 14 and the cap 18, by drawing the dental floss 12 through a narrow floss dispensing opening 56 in the cap 18. The floss dispensing opening is preferably oriented at angle which accomodates the removal of floss 12 from the spool 16 so that the floss 12 can come away from the side of the spool 16 as the spool 16 rotates about the floss receiving post 58 and pass substantial straight into the floss dispensing opening 56. In addition, the floss dispensing opening 56 is preferably large enough to allow floss 12 to pass therethrough freely and small enough to resist the passage of a drop of liquid. The dispensing opening preferably has a cross-sectional diameter of about 0.5-2.0 mm.

During assembly of the container 10, the floss 12 is preferably drawn through a floss dispensing opening 56 after the spool 16 is placed in the receptacle 14 on the floss receiving post 58 which the spool 16 can rotate about as the floss 12 is withdrawn. The floss 12 is drawn through the floss dispensing opening 56 before the cap 18 is attached or joined to the receptacle 14 to create the enclosure 52 within the single two-piece housing 11 create thereby.

In the preferred embodiment shown in FIGS. 1-4, the floss 12 is cut after it is withdrawn from the floss container 10 via the floss dispensing opening 56, by placing a finger 59 on the floss 12 and securing the floss 12 against an upper surface 60 of the cap 18 and pulling the floss 12 across a knife blade 62 in the cap channel 46 which cuts the floss 12, as is shown in FIG. 1. The upper surface 62 is preferably an indented or concave surface designed for this purpose.

In an alternate embodiment of the dental floss container 10' shown in FIG. 5, a floss clip 64 is attached to the bottom surface 66' of the alternate receptacle 14'. When an individual is using the alternate embodiment, the floss 12' is drawn out of the container 10' via the floss dispensing opening 56' and drawn over the front edge 50' of the support member 8' via the cap channel 46' and the support channel 48', and then under the support member 8' where it can be looped around the floss clip 64 and then pulled into the floss clip 64 where it is cut. It will be appreciated that the mechanism for cutting the floss 12' which is attached to the bottom surface 66' of the floss container 10' may be any known cutting mechanism, preferably a cutting mechanism known for cutting dental floss 12. Furthermore, the floss clip 64 of the present invention is a floss clip which is very well known in the art and is exemplified by the cutting mechanisms used by Castelli et al. (U.S. Pat. No. 2,929,541).

In FIG. 7, an alternate embodiment of the floss dispenser 4" is shown which includes a plurality of floss containers 10a and 10b which are received in a support member 8". This alternate embodiment has all of the respective features of the embodiment shown in FIGS. 1-4. It will be appreciated, however, that there are other embodiments having other features within the scope of the present invention as herein set forth.

It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative, and changes in matters of orders, shape, size and arrangement of parts may be made within the principles of the invention and to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.