FR2501539A1 - HYDRAULIC OSCILLATOR ACTUATING A MEMBRANE - Google Patents

Abstract

1. A fluid actuated massage device, which comprises : - a body member, - a nozzle member mounted onto said body member - a membrane stretchingly mounted onto said body member, in contact onto an end of said nozzle member and defining with said body member an annular cavity around said nozzle member, - a feeding means for feeding liquid within said annular cavity, and - a liquid exhausting means in fluid connection with said nozzle member, characterised in that the membrane is stretched in pressure contact onto the end of said nozzle member at one end of said body member, and in that it comprises a supply means for an incompressible liquid under pressure in the annular chamber, and means fitted on said body member for defining a downstream chamber which forms a buffer chamber in fluid communication with said nozzle member, and provided with a liquid discharging orifice.

Description

The present invention relates to an oscillator device generating

  vibrations, using a fluid, in particular a

  incompressible liquid, as actuation power.

  The object of the invention is to provide a simple device, robust, without moving parts, cheap, usable for

  massages, but also as an agitator to carry out

langes, dissolutions.

  Known devices of this type are generally electrical devices, the use of which may be prohibited because

  dangers of the current. We also know machine masks

  modulated water jet, but these involve bathing for the user; moreover, in both cases,

  the amplitude of the vibrations is relatively small.

  To do this, the device according to the invention is described with reference to the appended drawing which represents a view

in section of the oscillator.

  The apparatus is constituted by a non-perforated elastic membrane 1, resting on the outside of a diverging nozzle 2, by a cover 3 delimiting a sealed cavity 4, with the body of the apparatus 5. This cavity is fed in incompressible liquid under pressure, for example

  water, via the supply line 6; a cylindrical nozzle

  drique 7 is located in extension of the nozzle 2, in its axis. On the body, is attached in sealed manner, an attached portion, closed by a bottom, to define a buffer chamber 8, which covers the nozzle 7. A tube 9, fixed to the bottom,

ensures the evacuation of the fluid.

  The oscillator according to the invention operates as follows: The liquid, arriving via the supply line 6, will raise the pressure in the sealed cavity 4 and expand a ring of the membrane included, the peripheral fastening ring between the body of the appliance and the lid,

  edge of the nozzle 2 in contact with it.

  From a certain pressure in the cavity 4, the membrane takes off from the nozzle and a leak occurs between the edge of the nozzle 2 and the membrane 1. The friction of the water excites the vibration of the membrane disk which covers the nozzle. The nozzle-nozzle assembly constitutes by its dimensions a resonant system fixing the frequency; the nozzle allows

  also the maintenance of the oscillation when the load

  canic varies on the membrane during use.

  The buffer chamber 8 serves on the one hand fluid reservoir regulating the pressure behind the nozzle and on the other hand to collect the water that escapes from the nozzle to

  evacuate to the outside of the device, through the tube 9.

EXAMPLE:

  A synthetic or natural rubber membrane, thickness 2 mm, stretched from 3 to 10 kg on the nozzle,

  a nozzle of 340, external diameters 21.7 mm.

  Inside 12 mm., a cylindrical nozzle of 12 mm internal diameter, length 67 mm, generate a vibration of the fundamental frequency between 50 and 100 Hertz, with a high level presence for the harmonic 9. The peak amplitude at peak of vibration

  of the membrane may exceed one centimeter.

  The apparatus can be used as a vibrating element for making mixtures, dissolutions of products for which

  the electric current would be a danger.

  The apparatus according to the invention makes it possible in particular to carry out very gentle massages, for face care, of a magnitude of a few tenths of a millimeter, but also very energetic massages, at maximum power, by the maneuvering of the tap. supply of the installation

  domestic water. It can be used in all cases of mas-

  wise; it is possible to massage in the water or under water, taking a bath, without the risk of electrocution, but also fully dressed because there is no water projection; in this case, the large amplitude of the emitted vibration allows the passage of energy through the clothes. The importance of the amplitude of the low frequency vibrations that it generates, the possibility of massage using hot water,

  make it a particularly efficient device in

weight loss.

  Interesting exploitations can be

  - Stirring of liquids for mixtures and dissolving

lutions.

250 1,539

- 3 -

- Therapeutic massages.

  - Aesthetic massages with or without application of cosmetic products for the treatment of cellulite

and other forms of overweight.

-4-

Claims (7)

  1. Apparatus generating vibrations of fluid-actuated vibration, characterized in that it comprises - a body, - a nozzle mounted on the body, - a non-perforated membrane mounted on the body   in pressure contact against one end of the   jutting and defining, with the body, around the floor, an annular cavity,   a fluid supply means for the annular cavity   and a defluent discharge means connected to the nozzle and   including a buffer space at the exit of the latter.   2. Apparatus according to claim 1, characterized in that it comprises means attached to the body defining   a downstream chamber with which the nozzle communicates and   taking a fluid outlet.   3. Apparatus according to claims 1 and 2, characterized   characterized in that the nozzle is connected to a conduit element   downstream extending at least partially in the chamber.   4. Apparatus according to claims 1 to 3, characterized   in that the membrane is mounted by its periphery on the   body by means of an annular cover.   5. Apparatus according to claims 1 to 4, characterized   in that the nozzle is diverging towards its end in tact with the membrane.   6. Apparatus according to claims 1 to 5, characterized   in that the membrane is of flexible elastomeric material.   Apparatus according to claims 1 to 6 for the application   massage method, characterized in that the means of feeding   fluidization is intended to be connected to a   domestic water supply.