Coating implements with material supply – Brush – broom – or mop – With flow-regulator
Patent
1998-05-27
2000-04-18
Walczak, David J.
Coating implements with material supply
Brush, broom, or mop
With flow-regulator
401272, 401273, A46B 1104
Patent
active
060507365
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
OBJECT OF THE INVENTION
This invention relates to a toothbrush of the type, which incorporates a compartment in its handle for toothpaste, the purpose of the invention is centered on the feed system for toothpaste, each time it is necessary or required by the user, as well as the system of blocking the compartment containing said toothpaste.
It is also the object of the invention to supply the head with means, which make it possible to close the toothpaste passage toward the corresponding bristles, in order to prevent the accumulation and drying out of the toothpaste in its exit duct toward the bristles.
BACKGROUND OF THE INVENTION
In the area of oral hygiene, toothbrushes are known which, as stated above, have a hollow handle, which determines a container for toothpaste, capable of supplying the latter to the bristles of the head, for example, by means of simple elastic deformation of said handle, as occurs in Spanish Patent numbers 8701529 and 9000983, in Patent Application PCT W 091/13569, in the European Patent Application 0 407 917 and in the Spanish Utility Models 8902663, 8700520 and 8800095, while other solutions, such as, for example, Spanish Patent 900083 or Utility Model 8700838, provide pushing means to pump the toothpaste from the handle toward the head.
In each case, at least one orifice is disposed in the head of the toothbrush. This orifice is maintained permanently open for discharging toothpaste and results in problems of drying and deterioration of the product. At the same time, the manipulation of the toothbrush may involuntarily result in deformations of the handle which, in turn, causes an undesired exit of the toothpaste through the head.
One apparent solution to this problem is one, which is offered in PCT W 090/09122, in which a toothbrush is provided, the head of which rotates in such a manner that the toothbrush is kept isolated until the moment of initiating the use of the toothbrush, at which time the rotation of the head establishes communication between it and the reservoir of toothpaste detained in the handle. However, this solution is provided for single-use toothbrushes and, if applying the principle to multi-use toothbrushes was desired, it would then be effective only until the time use was initiated, since after communication is first established between the reservoir and the head, it cannot be reclosed.
DESCRIPTION OF THE INVENTION
The toothbrush, which is being suggested, includes a system to feed and to block passage of the toothpaste toward the head, therefore, a system of blockage in said head prevents, when the user so desires, toothpaste from coming toward the bristles of said head.
The feed system, which is a part of the purpose of the invention, is based on pushing, to pump the toothpaste from the handle to the head, and means for blocking, which permit or prevent the passage of said toothpaste toward the head.
More concretely, beginning with the hollow structuring of the handle of the toothbrush in order to form the corresponding compartment, which makes it possible to house the toothpaste in its interior, the inventive toothbrush has the characteristic that the handle itself is structured on the basis of two bodies coupled telescopically and hermetically sealed in a manner that axial retraction of one body with respect to the other results in a defined volumetric reduction on its interior, more concretely, one of these bodies, the one which acts as the actual container, being equipped with an axial orifice at its internal end, to which a duct is coupled for the exit of the toothpaste, which duct is axially solid with the other body and which, for the purpose of permitting the axial relative displacement between them, must have a section, which is structured to be springy, said duct abutting a one-way valve, which tends permanently to the closed position due to the effect of a spring, against which it is forced open by the pressure of the toothpaste when the two bodies, which constitute the handle, are retracted, with respect to one anoth
REFERENCES:
patent: 3261367 (1966-07-01), Pickering
patent: 3400996 (1968-09-01), Bandergrift
patent: 3937235 (1976-02-01), Broughton
patent: 5154523 (1992-10-01), Devreeze
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