Brushing – scrubbing – and general cleaning – Implements – Combined
Patent
1996-06-17
1998-11-17
Till, Terrence
Brushing, scrubbing, and general cleaning
Implements
Combined
151671, 152072, 15DIG5, 300 21, A46B 904
Patent
active
058360336
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to an improvement in a toothbrush, especially for combined brushing of the teeth and massage of the gum, and comprising a plurality of toothbrush bristles attached at their one end to the head of said toothbrush and having their other end extending freely therefrom, as well as to the manufacturing thereof.
PRIOR ART
U.S. Pat. No. 1,022,920 discloses a toothbrush for combined cleaning and massage, which comprises two set of brushes comprising inner bristles and outer surrounding rubber bristle parts. The combined cleaning and massage takes place in that the inner bristles will be screened off and be prevented from coming into contact with the gums, whereas the outer brush parts comprising the rubber bristles will provide the massaging effect, for thus by means of this massage to strengthen and indurate delicate and soft gums.
U.S. Pat. No. 1,188,823 relates to an insert which can be used in connection with toothbrushes, namely to provide a combined massage of the gums, at the same time as the tooth surfaces are cleansed by the bristles of the toothbrush. This insert takes the form of a sleeve which is put on to the head of the toothbrush for thereby surrounding the ordinary toothbrush bristles.
U.S. Pat. No. 1,251,250 also relates to a combination toothbrush, comprising inner bristles and outer resilient bristles, said inner bristles being provided as hard bristles as known per se, whereas the outer bristles are provided from rubber or similar resilient material.
U.S. Pat. No. 1,268,544 discloses a toothbrush having regular outer toothbrush bristles, whereas in the middle of the brush there are provided a plurality of suction cups, the upper edges of which being aligned with the free upper ends of the outer bristles. Said suction cups and their stems are preferably provided from rubber. These cups are used as the massaging part of the toothbrush, said cups influencing the gums with a kneading effect for increasing the blood circulation thereof.
U.S. Pat. No. 3,553,759 also relates to a combination brush having a toothbrush head comprising inner cleaning bristles and outer massaging brushes made from rubber and having a length which extend beyond the length of the inner cleaning bristles. According to this publication it is also suggested that the outer resilient rubber massaging bristles have outer portions which are expanded or providing a larger surface and thereby a better stimulating effect when treating the gums.
In FIG. 2 of said U.S. Pat. No. 3,553,759 it is depicted that the bristles may be arranged in tufts or clusters, but the outer soft material constituting the tips have an extension which is longer than the inner bristles used for cleaning purposes. Besides, said tufts or clusters depicted in FIG. 2 of U.S. Pat. No. 3,553,759 are arranged obliquely, and nowhere in this specification are any indications made for substantially vertical bristles which are shorter than the cleaning bristles and being formed to merge into an integrated rounded end portion.
From U.S. Pat. No. 4,571,768 there is known a toothbrush having a plurality of bristles of ordinary length and ordinary quality for example nylon, whereas inbetween said ordinary bristles there are provided lower elements comprising a permanent magnet. Said normal bristles render a cleaning function and only when pushing harder on the toothbrush the lower elements will come into contact with the gums for the stimulation thereof, at the same time as the gums are influenced by the magnetic field from the permanent magnet. However, it is believed that the location of the magnetic elements in the centre of the toothbrush will entail that the remaining ordinary brushes 2 will treat the gums unnessecarily hard when said elements are intended to provide a massage function.
U.S. Pat. No. 4,277,862 relates to a combination brush having inner cleaning bristles extending beyond adjacent massage means which are provided as plate shaped means having upper portions including slits therein.
GB 2,178,304 re
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