EP1154730A1

EP1154730A1 - Dental floss holder

Info

Publication number: EP1154730A1
Application number: EP00914459A
Authority: EP
Inventors: Anders Hallinder; Pekka Sihvo
Original assignee: Hallinder Andres; Flossy Dental Inc
Current assignee: Hallinder Andres; Flossy Dental Inc
Priority date: 1999-01-28
Filing date: 2000-01-27
Publication date: 2001-11-21
Also published as: SE9900275D0; AU3584600A; SE513810C2; WO2000044301A1; SE9900275L

Abstract

A dental floss holder that has an elongate handle member (1) that has two fork fingers (2) at one end and wherein a floss supply (5) is mounted to the member (1) for pulling out of the dental floss (64-68) therefrom, and wherein points (3) of the fingers (2) have guidance members for the floss to permit a floss segment (66) to extend between the finger points (3) and wherein the members (91-97) are provided to attach a floss end (68) to the member (1). The dental floss supply (5) includes a floss roll (60) which is mounted with its rolling axle perpendicular to the elongate handle member (1). The locking members (56, 80, 84) are provided to lock the roll (60) from rotation.

Description

Dental floss holder

The invention relates to a dental floss holder that includes a member that carries a dental floss supply, and has a fork formation at one end so that the dental floss holder has a track to permit a piece of the dental floss to be tightened between the free ends of the fork fingers.

Prior known dental floss holders have, in practice, the drawback that they do not permit an easy and stable attachment of the ends of the dental floss segment to be extended between the outer ends of the fork fingers.

One object of the invention is therefore to provide a dental floss holder of the mentioned type that provides a simple and stable attachment of the ends of the dental floss segment that is tightened and extending across the fork fingers and that also provides an easy removal of the used dental floss segment .

Another object is to provide a dental floss holder that has a supply that easily provides a new dental floss segment .

The object of the invention is completely or partly achieved with the dental floss holder according to the appended claim 1.

Embodiments of the dental floss holder of the present invention are described in the dependent patent claims .

According to a fundamental distinctive feature of the invention the dental floss supply is formed by a roll or a spool of dental floss so that the roll is mounted with its axle across the longitudinal axis of the holder body so that the dental floss from the roll to the fork extends substantially radially to the roll. Further, a catch member is available to prevent the roll from rotating. In this way, the end portion of the dental floss segment that is to be used is attached simply because it cannot be pulled out from the roll due to its orientation relative to the load direction of the end of the dental floss.

The dental floss thus extends from the roll along the body to one of the fork finger ends and from there to the other fork finger end and then back along this fork finger to the attachment mechanism on the body. The fork fingers can be bent to make the teeth cleaning easier with the dental floss segment that extends between the fork finger ends .

In the preferred embodiment there are manually operable release members provided to temporarily release the rotational lock of the dental floss roll so that there is a bearing that permits rotation of the roll.

An example of the embodiment of the dental floss holder of the invention is shown in the attached drawings and is described in more detail below.

Fig. 1 shows a plan view of the dental floss holder of the invention.

Fig. 2 shows a section view along line II-II of

Fig. 1.

Fig. 3 shows an enlarged view of a detail of the attachment mechanism of the free end of the dental floss.

Fig. 1 shows an elongate dental floss holder member that at one end has a dental floss supply 5 and at the other end has a pair of bent fork fingers 2. In the middle of the length of the member 1 there is an attachment mechanism for a dental floss end 68. The mechanism includes an opening 95 extending through the member 1. A shaft 93 extends through the opening and has heads 91, 92 at each end. The shaft 93 is slightly longer than the opening 95 so that the shaft 93 is lengthwise shiftable as indicated by the double arrow 94.

One can see that the member 1 has, on its upper side and along the fingers 2, a track 21 all the way to the finger points 3 where the track 21 extends into a guidance angle 4. In the supply 5, there is a dental floss roll 60 from which the dental floss extends out through an opening in the supply housing. The floss is shown to have a first segment 64 from the roll 60 that extends partially around the shaft 93 wherefrom a subsequent floss segment 65 extends along the track 21 on one side of the fork finger 2 to the point 3 and further through the cavity 4 where the subsequent floss segment 66 extends to the next fork finger point 3 and through its cavity 4 wherefrom the next floss segment 67 extends in the track 21 on the fork finger 2 back to the shaft 93, and for example around the shaft and ends at the floss end 68.

With reference to Fig. 3, one can see a right angle 97 between the shaft 93 and the member 91. The free end 68 of the floss is received in the right angle 97. Further, one can see that the opening 95 has a chamfered end part 96. Further, the gap 95 between the opening 95 and the shaft 93 is adapted to the thickness of the dental floss. The dental floss end 68 can now be easily attached by pushing down the knob 91 in Fig. 2 so that the floss is captured in the gap 95. The end of the floss can be easily released by pushing the knob 92 in an upward direction (Fig. 2) .

The member 1 can have a floss cutting tool 100.

The supply 5 has the shape of a bowl 52 with a bottom 54 and a lid 51. The center part of the lid 51 includes a manually resilient deformable membrane 59. The bottom 54 has a central shaft bearing 53. This holds a socket 81 for rotation. An upper end of the socket 81 supports an end plate 80.

An inside of the lid 51 has a number of axially directed locking members 56. The end plate 80 has suitable axial channels 84 that receive the ends of the members 56. The socket 81 receives, with high friction, the reeling in casing 61 of the dental floss spool 60.

From the bottom 54, the socket 81 is supported by a support plate 71 that supports an end of the socket 81 (and also the roll 60) . The plate 71 in turn is supported from the bottom 52 via spring fingers 72.

The spring fingers 72 holds the plate 80 in engagement with the members 56.

The plate 80 includes a pin 85 and extends to an inside of the membrane 59. A user can now easily with one finger apply a pressure from the outside against the membrane 59 so that the pin 85 and the plate 80 axially shift away from the engagement with the catch members 56 so that the plate 80 and thus the socket 81 and the floss roll 60 can freely rotate so that the floss 64 can be pulled out from the supply 5 to a desired length. As soon as the load on the membrane is removed, the floss roll 60 will, after some further turning by the continued pulling of the floss, to be rotationally locked.

In Fig. 2 one can see that the separate and generally parallel fingers 2 have a bent portion 22 at about half its length which makes it easier to work with the floss segment 66 between teeth.

Claims

Patent claims

1. Dental floss holder having an elongate handle member (1) that has two fork fingers (2) at one end and wherein a floss supply (5) is mounted to the member (1) for pulling out of the dental floss (64-68) therefrom, and wherein points (3) of the fingers (2) have guidance members for the floss to permit a floss segment (66) to extend between the finger points (3) and wherein the members (91-97) are provided to attach a floss end (68) to the member (1) characterized therein that the dental floss supply (5) includes a floss roll (60) which is mounted with its rolling axle perpendicular to the elongate handle member (1) and that the locking members (56, 80, 84) are provided to lock the roll (60) from rotation.

2. Dental floss holder according to claim 1 characterized therein that manually operable release members (59, 85, 81, 71, 72) are provided to temporarily release the locking member's locking of the roll, and that the roller (60) has bearings (81, 85) for rotation in the supply.

3. Dental floss holder according to claims 1 or 2 characterized therein that the attachment member (91-97) includes an opening (95) through the handle member (1) and a shaft (93) extends through the opening and forms, along a special segment, a radial play (95) relative to the wall of the opening, that the shaft (93) is arranged to be axially shiftable along the axle of the opening for a limited distance, and that the shaft (95) has a head (91, 92) at least at one of its end so that the floss extends about the shaft between the head and the handle member (1) and can be reeled in into the play (5) and be temporarily secured therein through clamping.

4. Dental floss holder according to any of claims 1-3 characterized therein that the dental floss roll (60) is coaxially attached to a roll holder (81, 80) that is rotatably attached to the handle about the bearing axle (53), that the roll holder (81, 80) is axially spring biased against an end position, that the roll holder has an end plate with openings (84) that receive pins (56) in an end position to prevent the roll (60) from rotating, and that the member (59, 85) is manually operable for shifting the holder (80, 81) away from the engagement with the locking mechanism to permit the pulling out of the floss (64) from the supply (5) .

5. Dental floss holder according to any of claims 1-4 characterized therein that the fingers (2) has a track (21) for guiding the floss to and from the finger points (3) .

AMENDED CLAIMS

[received by the International Bureau on 05 July 2000 (05.07.00); original claim 4 cancelled; original claim 1 amended; claim 5 renumbered as claim 4; other claims unchanged (2 pages)]

1. Dental floes holder having an elongate handle member (l) that has two fork fingers (2) at one end and wherein a floss supply (5) is mounted to the member (1) for pulling out of the dental floes (64-68) therefrom, and wherein points (3) o£ the fingers (2) have guidance members for the floss to permit a floss segment (66) to extend between the finger points (3) and wherein the members (91-97) are provided to attach a floes end (68) to the member (l) characterized therein that the dental floss supply (S) includes a floss roll (60) which is mounted with its rolling axle perpendicular to the elongate handle member ( ) and that the locking members (56, BO, Θ4) are provided to lock the roll (60) from rotation, the dental floss roll (60) is coaxially attached to a roll holder (81, SO) that is rotatably attached to the handle about the bearing axle (53), that the roll holder (81, 80) is axially spring biased against an end position, that the roll holder has an end plate with openings (84) that receive pins (56) in an end position to prevent the roll (60) from rotating, and thac the member (59, 85) is manually operable for shifting the holder (80, 81) away from the engagement with the locking mechanism to permit the pulling out of the floss (64) from the supply (5) -

2 . Dental floss holder according to claim l characterised therein that manually operable release members (59, 65, 81, 71, 72) are provided to temporarily release the locking member's locking of the roll, and that the roller (60) has bearings (81, 85) for rotation in the supply.

3. Dental loss holder according to claims 1 or 2 characterized therein that the attachment member (91-97) includes an opening (95) through the handle member (1) and a shaft (93) extends through the opening and forms, along a special segment, a radial play (95) relative to the wall of the opening, that the shaft (93) is arranged to be axially shiftable along the axle of the opening for a limited distance, and that the ©haft (95) has a head (91, 92) at least at one of its end so that the floss extends aboτ:.t the shaft between the head and the handle member (1) and can be reeled in into the play (5) and be temporarily secured therein through clamping.

4. Dental floss holder according to any of claims 1-3 characterized therein that the fingers (2) has a track (21) for guiding the floss to and from the finger points (3) _<