U.S. patent number 3,903,906 [Application Number 05/339,630] was granted by the patent office on 1975-09-09 for method and apparatus for brushing teeth.
Invention is credited to George C. Collis.
United States Patent |
3,903,906 |
Collis |
September 9, 1975 |
Method and apparatus for brushing teeth
Abstract
This is a method and apparatus for brushing teeth. The method
embodies an up and down chewing action on a resilient cushioning
element and bristles having relatively soft frayed or filamented
ends to avoid injury to the gums; the design of the brush unit is
illustrated in several different forms, one being a plurality of
radial fingers mounted on a handle supported hub and engaging the
sides of the teeth during the chewing operation. This form of the
apparatus is also adapted for actuation to a back and forth
oscillating action which produces a rolling of the fingers along
the teeth. Other forms of the invention embody brush type units
specifically constructed to facilitate chewing thereon while
simultaneously brushing the teeth with an up and down action.
Inventors: |
Collis; George C. (Minneapolis,
MN) |
Family
ID: |
23329915 |
Appl.
No.: |
05/339,630 |
Filed: |
March 12, 1973 |
Current U.S.
Class: |
132/200;
433/141 |
Current CPC
Class: |
A46B
9/045 (20130101); A46B 2200/1066 (20130101) |
Current International
Class: |
A46B
9/04 (20060101); A46B 9/00 (20060101); A45d
044/18 () |
Field of
Search: |
;132/84R,120,84B
;15/167R,172 ;128/62A,136 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: McNeill; G. E.
Attorney, Agent or Firm: Adams; John W.
Claims
What is claimed is:
1. A toothbrush comprising
a handle,
a bristle mounting head connected to said handle,
a cushioning element mounted on said head, and
a plurality of cleaning bristles carried by said head and having
certain of said bristles bent to form an acute angle to the
direction of motion produced by up and down chewing action against
the cushioning element.
2. The structure set forth in claim 1 wherein said head comprises a
hub member disposed at right angles to said handle, and said
cushioning element having a plurality of circumferentially arranged
bristles extending generally radially around said hub-for forming
at least one generally circular ring of bristle elements with the
axis thereof disposed substantially concentrically with the axis of
said hub member.
3. The structure set forth in claim 1 wherein each bristle element
has the brushing ends thereof filamented to produce soft tooth and
gum engaging end portions.
4. The structure set forth in claim 2 wherein the bristles include
a plurality of substantially concentric rings of bristle elements
forming a first set of rings.
5. The structure set forth in claim 4 wherein a second set of
concentric rings of bristles is provided on said hub member in
generally opposed spaced relation to said first set of rings.
6. The structure set forth in claim 1 and said cushioning element
comprising a second set of bent bristles mounted on the opposite
side of said head from the first mentioned bristles so that chewing
action against the opposed bristles will simultaneously clean both
the upper and lower teeth.
Description
The dental profession has recognized for some time that up and down
brushing is a more effective way of cleaning the inter proximal
areas of the teeth. However, this is much more difficult than
brushing crosswise along the surface of the teeth and is a very
tedious operation at best. The present invention involves an up and
down chewing action on a specially constructed brush or cleaning
unit specifically designed to prevent injury to the gums while
still contacting the inter proximal areas of the teeth to remove
food particles therefrom and to remove the plaque from all portions
of the tooth's surfaces without injury to the gum. By using a
chemical available on the market which discolors the plaque coating
in order to make it visible, it is possible to determine the
effectiveness of the chewing brushing action and it has been found
that with even relatively short brushing periods the chewing action
produces far superior over all cleaning of the complete tooth
surface than do any of the other methods of brushing teeth.
It is therefore an object of this invention to provide a new method
for brushing teeth which embodies the use of a chewing up and down
action against a cushioning member on which the cleaning bristles
are mounted.
An efficient cleaning brush embodies two opposed banks of bristles
for simultaneously engaging both the inner and outer tooth surfaces
during the chewing operation.
It is a specific object to provide a tooth cleaning unit made in
the form of opposed concentric rings of bristles at least the outer
rings of which embody soft filamented ends to avoid damaging the
gums while the operator is chewing against the cushioned central
hub member on which the rings or bristles are mounted or is rolling
the rings along the surfaces of the upper and lower rows of the
teeth.
It is a further object to provide an attachment for a soft
conventional toothbrush which will permit the same to be used with
a chewing action.
These and other objects and advantages of this invention will be
apparent from the following description made in connection with the
accompanying drawing wherein like reference characters refer to
similar parts throughout the several views, and in which:
FIG. 1 is a front elevational view showing one form of my brushing
apparatus with a special multiple toothpick type cleaning
attachment on the other end of the gripping handle thereof.
FIG. 2 is a top plan view of the brush apparatus shown in FIG.
1.
FIG. 3 is a vertical sectional view showing the apparatus in
cleaning position around both the upper and lower teeth.
FIG. 4 is an enlarged fragmentary vertical sectional view of the
apparatus shown in FIG. 3.
FIG. 5 is a vertical sectional view showing a modified form of my
brushing apparatus.
One form of apparatus embodying this invention is illustrated in
FIGS. 1 through 4. In this form the tooth cleaning elements
constitute a plurality of bristles 20 in the shape of radially
oriented fingers mounted on a central hub member 21 and extending
outwardly therefrom in "spider leg" fashion. Each individual
bristle has a soft filamented end 20a to prevent injury to the
gums. In the form illustrated three concentric rings of bristles
are provided, each containing a plurality of the bristles 20. The
outer ring of bristles is designated by the letter "A", the middle
ring by the letter "B" and the inner ring by the letter "C". The
central hub 21 has a cushioning sleeve 22 surrounding the same
which provides a spacer between opposed concentric rings of
bristles as best shown in FIG. 3. A handle 23 is mounted on the end
of the hub 21 and extends at right angles thereto. The three
concentric rings of bristles A, B and C form one bank of bristles
designated by I. A second bank of bristles II is also mounted on
the common hub 21 with the respective banks of bristles I and II
disposed in opposed relation as best shown in FIGS. 2 and 3. In
this form of the invention a central brush 23a is mounted on the
hub 22 and has radially extending bristles 22b, the outer ends of
which define a cylinder concentric with said hub. Both sides of the
teeth and the inter proximal areas thereof will be simultaneously
cleaned by the bristles 20 when the banks I and II are inserted
into the mouth as illustrated in FIG. 3 and the individual merely
chews up and down against the resilient cushioning sleeve or bumper
22. This form of the invention is also adapted for rolling along
the surfaces of the teeth by back and forth oscillating action by
the user. In addition to the cleaning action described above the
chewing surfaces of the teeth are cleaned by the bristles 22b
during the chewing action.
A second form of the invention is illustrated in FIG. 5 wherein a
ring of spider like bristles 120 is mounted on the outer periphery
of a compressible center hub member 121. The hub 121 is made from
relatively soft material which will yield sufficiently to contract
the finger like bristles as shown in full lines in FIG. 5 when the
hub is compressed as by the chewing pressure thereagainst. It will
be apparent that the axis of the ring of the bristles 120 and the
hub thereof will be substantially vertical and will coincide with
the center lines through the teeth of the teeth, as contrasted with
the axis of the rings A, B and C in for form of the invention shown
in FIGS. 1 through 4 wherein said axis is disposed generally
horizontal and normal to the axis of the teeth.
It will be seen that I have provided a highly efficient method and
apparatus for brushing teeth which have proved to be more effective
than methods and apparatus previously known. A concept of chewing
on a brush is considerably easier than previously known methods and
is therefore particularly adapted for use by young children and
relatively old people. All forms of the invention are particularly
adapted for use with the chewing type cleaning action and the form
shown in FIG. 1 through 4 is also adapted for use by rolling the
same between the upper and lower rows of teeth.
It will of course be understood that various changes may be made in
the form, details, arrangement and proportions of the parts without
departing from the scope of this invention as set forth in the
appended claims.
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