Brushing – scrubbing – and general cleaning – Implements – Brush or broom
Patent
1998-10-28
2000-08-01
Spisich, Mark
Brushing, scrubbing, and general cleaning
Implements
Brush or broom
151431, 151441, 15172, D4104, D4110, D4112, A46B 500, A46B 702, A46B 904
Patent
active
060947683
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention features a transversal toothbrush with a manual grip handle or attached to a power machine to provide, respectively, manual or mechanical brushing of the teeth with improved effectiveness.
Known toothbrushes are composed of a body, a front face, and a handle. The brush body is approximately rectangular and has rows of 7 to 12 tufts of bristles aligned in the direction of the length of the brush body. This body is extended along the length on one small side by a handle; such brushes are then called longitudinal brushes. There are also toothbrushes having a circular brush body with a diameter on the order of 1 cm for special applications.
With such brushes, the brushing of the teeth is done primarily by large amplitude longitudinal push-and-pull movements from front to back according to the longitudinal direction of the brush parallel to the rows of teeth, perpendicular to the direction of the teeth, and therefore called longitudinal brushing.
The known longitudinal toothbrushes were obviously required because until now it was thought that the brushing should be done parallel to the rows of teeth with large amplitude back and forth movements, from the incisors to the molars, using the muscles of the arm which make the forearm turn at the elbow or by pivoting the whole arm at the shoulder through the action of the rotator muscles.
The toothbrush according to the invention runs counter to such evidence and habits with respect to the brushing of teeth. It is composed of an essentially rectangular brush body with a handle appreciably angled, preferably perpendicular to the longitudinal direction of the brush body. Although at first sight this new configuration would appear not to work well because of not reaching the back teeth, it allows effective brushing because it promotes a transversal brushing consisting of an up and down transversal movement perpendicular to the rows of teeth and parallel to the teeth and to their implantation.
This "transversal" brushing cleans the prominent parts, and also the interstices and recessed parts of the teeth where material tends to collect and become stuck. It also allows a better massaging action on the gingiva, with greater efficiency in eliminating tartar at the collum dentis.
Longitudinal brushing with known longitudinal brushes permits good cleaning of the prominent parts of the teeth, but is not very effective on the interstices and recessed parts of the teeth. With such brushes transversal brushing is also quite possible, but with little vigor because it consists of a somewhat unnatural oscillating movement obtained by the rotating action of the wrist, the muscles of which are not very precise, strong or efficacious for exercise of this type.
Advantageously, the brush according to the invention allows brushing to be done when the handle is held fully in the hand, not using an oscillating movement but rather by pushes and pulls produced by turning the arm on itself with the bent forearm remaining rigid, or by pivoting the whole arm around the shoulder using the rotator muscles. In this case the inside of the hand is facing the chest, the articulation of the wrist, the muscles of the forearm and arm exercise significant pressure on the brush and the transversal brushing is very vigorous in the reciprocating vertical movements. This hold on the handle is the only one that allows a natural, easy reciprocating vertical movement. For children, holding this brush with such a different handle becomes a game, resulting in better hygiene. Studies have shown that handicapped persons have greater facility in producing an up-and-down movement than horizontal pushes and pulls.
Several toothbrush models having the form of a capital T allow an up-and-down brushing of the teeth; the brush body is the top horizontal member and the handle is the vertical staff of the T.
Some models are fixed, such as those described in documents DE 3228946 and FR 2,583,963. The first document describes a straight brush body or curved in order to accommodate th
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Grivon Josette
Hugon Roland
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