WO1981002380A1

WO1981002380A1 - Improved toothbrush

Info

Publication number: WO1981002380A1
Application number: PCT/US1980/001135
Authority: WO
Inventors: M Rosario
Original assignee: M Rosario
Priority date: 1980-02-22
Filing date: 1980-09-02
Publication date: 1981-09-03
Also published as: AR220648A1; EP0055709A1; ES256337U; ES256337Y

Abstract

An improved tooth brush (12) which includes an elongate handle (14) and a brush (20) with a base (24) and a mounting in the form of a coil spring (44) interconnecting the brush base (24) to the distal end (18) of the tooth brush (12) for swinging, rotatable, tilting movement of the brash (20) relative to the handle (14) in use. Two embodiments are illustrated.

Description

IMPROVED TOOTHBRUSH

Technical Field This invention relates to toothbrushes and, more particularly, to a toothbrush wherein the brush is mounted resiliently and yieldably for flexing action to the distal end of the handle.

0 Background of the Invention:

In the past there have been numerous types of mountings for brushes in toothbrush combinations.

This invention is of an improved type of mounting in combination with a brush and toothbrush handle where- , _c in "the brush is adapted for rotatable and tilting movement, two embodiments being described.

Objects of the Invention:

It is an object of this invention to provide an 0 improved mounting for toothbrushes and, more particu¬ larly, for mounting the toothbrush to the brush handle wherein a coiled spring is utilized and a clearance recess for a relatively large range of tilting and rotating action of the brush in use. 5 In accordance with these and other objects which will become apparent hereinafter, the instant inven¬ tion will now be described with reference to the accompanying drawings, in which:

30 Description of the Drawings:

Figure 1 is a side elevation view of a tooth¬ brush in accordance with the first embodiment of this invention;

Figure 2 is an enlarged view partly in cross r. _c section of the right-hand portion of Figure 1;

Figure 3 is an end view of the device shown in Figure 1; Figure 4 is a top plan view of the device shown in Figures 1 and 2;

Figure 5 is a side elevational view., similar to Figure 1, in accordance with the second embodiment of the invention; ₅ Figure 6 is a fragmentary enlarged view of the right-hand portion of Figure 5;

Figure 7 is an end view of the device illus¬ trated in Figures 1 and 2; and

Figure 8 is a top plan view of the device of -i _Q Figures 1 and 2.

Description of the First Preferred Embodiment:

Referring to the drawings wherein like reference characters designate like or corresponding parts

,c throughout the several views and referring particu¬ larly to Figure 1, the toothbrush is generally desig¬ nated by the numeral 12. It is seen that it has an elongate handle 14 with a proximal end zone 16 and a distal end zone 18. On the distal end zone a brush

20 20 is mounted spaced slightly inward, that is, adja¬ cent the terminal end. The brush includes a base 24 of predetermined length and with an upper surface 25 from which an array of bristles 28 extend being secured to the base in upstanding relation. The 5 brush base has a second surface 30 which faces toward the handle, that is oppositely from the surface from which the brushes extend. The brush base has a central recess 31 extending toward the surface from which the brushes extend. With respect to the handle, 0 the distal end zone is provided with a recess 51 in the face 40. A coil spring 44 which has an upper end 46 and a lower end 48 is utilized to connect the brush to the handle in the manner shown. It is seen that the upper end is nested in the recess of the 5 brush and fixed therein while the lower end of the spring is nested in the recess 42 of the distal end zone of the handle and secured therein. Addition¬ ally, the coil spring includes a portion which ex-

Q..- - tends tangentially with respect to the coils of the springs longitudinally of and in an embedded relation in the distal end zone of the handle, this portion of the spring being designated by the numeral 50. The upper surface of the distal end zone is, addition- ally, provided with a recess 51 which is spaced from the spring mounting a distance about one-half of the distance from the spring mounting to the terminal end zone of the handle, that is, about one-half the longitudinal length of the brush. This is so that the base with the brushes is adapted for rotation about the axis of the spring and for tilting and rocking motion as is indicated in the drawings by the arrowed lines.

In use, it is seen that one brushing his teeth with the device will find that it will conform gener¬ ally to the shape of the mouth and the teeth location of a user.

It will be seen that the longitudinally extending portion of the spring which is embedded in the handle rigidifies the distal end of the handle which would otherwise be substantially weakened by reason of the removal of the material to provide the clearance recess 51, so that a strong durable toothbrush is provided with the moving, tilting, rotating action described by the arrowed lines in the drawings. Description of the Second Preferred Embodiment:

Referring now to the second preferred embodiment in the drawings, wherein similar reference characters are utilized corresponding to similar parts throughout "the several views and with respect to the embodiment shown in Figures 1 through 4, with the exception that the numerals have been identified by a prime designa¬ tion, the toothbrush" is generally designated by the numeral 12'. It is seen that it has an elongate handle 14' with a proximal end zone 16' and a distal - end zone 18'. On the distal end zone a brush 20' is mounted spaced slightly inward, that is, adjacent the terminal end. The brush includes a base 24' of predetermined length and with an upper surface 26' from which an array of bristles 28^! extend being secured to the base in upstanding relation in a conventional manner. The brush base has an opposite surface 30' which faces toward the handle, that is, oppositely from the surface from which the brushes extend. The brush has a central zone 31' from which the bristle array extends. With respect to the handle, the distal end zone is provided with a recess 51' in the face 40', which recess is somewhat elongate, that is, having a generally longer radius of curvature than does the recess 51 of the first embodiment. A coil spring 44' which has an upper end 46' and a lower end 48' is utilized to connect the brush to the handle in the manner shown. It is seen that the upper end is secured to the brush and fixed thereto while the lower end of the spring is fixed to and carried by the distal end zone of the handle. Addi¬ tionally, the coil spring includes a portion which extends from the coils of the spring longitudinally of and in an embedded relation in the distal end zone of the handle, this portion of the spring being designated by the numeral 53. It will be seen that the base with the brush is adapted for rotation about the axis of the spring and for tilting and rocking motion as is indicated in the drawings by the arrowed lines in the second embodiment as well as in the first embodiment.

In use, it is seen that one brushing his teeth with this device, irrespective of which embodiment is utilized, will find that it will conform generally to the shape of the mouth and the teeth location of the user and provide stimulation of the gums.

It will be seen that the longitudinally extend¬ ing portion of the spring which is embedded in the handle rigidifies the distal end of the handle which would otherwise be substantially weakened by reason of the removal of the material to provide the clear¬ ance recess 51, so that a strong durable toothbrush is provided with the moving, tilting, rotating action described by the arrowed lines in the drawings.

While the instant invention has been shown and described in what are considered to be two practical and preferred embodiments, it is recognized that departures may be made within the spirit and scope of this invention which is, therefore, not to be limited except as set forth by the following claims within the doctrine of equivalents.

^W^ ^ ^

Claims

1. A toothbrush having an elongate handle with a proximal end zone and a distal end zone and includ¬ ing a brush mounted adjacent the distal end zone,

₅ said brush including a base of predetermined length and a first surface and an array of bristles 28 secured in upstanding relation on the first surface, the brush base having a second surface oppositely facing in relation to the first face having a central

,_Q recess extending toward the surface from which the brushes extend, said distal end of said handle having a first face with a recess in said first face confront¬ ing the second surface of the brush base, a coil spring having an upper end and a lower end, said

.,5 upper end being nested in the recess of said brush and fixed therein to connect the brush to the handle and the lower end of said spring being nested in the recess of said bristle end zone and being secured thereto and said coil spring including a tangentially

2o extending elongate portion 50, said portion being embedded in the distal end zone and extending toward said proximal end, said upper surface of said distal end zone having a recess in the first face spaced from the recess in said distal end zone a distance 5 one-half of said predetermined length of said base, whereby, said base with said brushes is adapted for rotation about the axis of said spring and for tilt¬ ing and rocking motion, with said base being adapted to move in and out of said recess in the first face 0 of the distal end zone of the handle in said rocking motion.

2. The device as set forth in claim 1 wherein said handle is of plastic material. 5

3. A toothbrush having an elongate handle with a proximal end zone and a distal end zone and includ¬ ing a brush mounted adjacent the distal end zone,

O PI_ said brush including a base of predetermined length and a first surface and an array of bristles 28 secured in upstanding relation on the first surface, the brush base having a second surface oppositely facing in relation to the first surface having a zone on the second surface, said distal end of said handle having a first face confronting the second surface of the brush base, a coil spring having an upper end and a lower end, said upper end being connected to said brush and fixed thereto to connect the brush to the handle and the lower end of said spring being secured to the distal end zone of said handle and said coil spring including an extending elongate portion, said portion being embedded in the distal end zone and extending toward said proximal end, said first face of said distal end zone having a clearance recess in the first face spaced from said base in said distal end zone to a accommodate tilting movement of said base, whereby said base with said brush is adapted for rotation about the axis of said spring and for tilting and rocking motion, with said base being adapted to move in and out of said recess in the first face of the distal end zone of the handle in said rocking motion.

4. The device as set forth in claim 1 wherein said handle is of plastic material.