FR2606675A1 - LIQUID APPLICATOR, FOR EXAMPLE BEAUTY CARE INSTRUMENT, WRITING INSTRUMENT, ETC. - Google Patents

Abstract

A LIQUID APPLICATOR SUCH AS A BEAUTY CARE INSTRUMENT, A WRITING INSTRUMENT, ETC., HAS A PISTON 16 TO CAUSE LIQUID (INK) TO BE INTRODUCED INTO A LIQUID 11 APPLICATION ELEMENT A TANK 14 HOUSEHOLD INSIDE THE APPLICATOR. THE PISTON IS ATTACHED TO THE END OF A THREADED ROD 18 AND AXIALLY DRIVEN BY THE ROD MOUNTED INSIDE THE APPLICATOR WHEN THEM IS ROTATED BY THE USER BY MEANS OF A ROTATING CONTROL HANDLE 21 MOUNTS IN THE REAR END OF THE APPLICATOR. DURING THE ROTATION OF THE CONTROL HANDLE, THE THREADED ROD ADVANCES AS A RESULT OF ITS ENGAGEMENT WITH THE FEMALE THREAD THAT IS HELD ATTACHED IN THE LONGITUDINAL DIRECTION OF THE APPLICATOR.

Description

1. The present invention relates to a liquid applicator, such as a

  beauty care instrument employing

  a liquid, for example a product to highlight the

  around the eyes, nail polish, etc., a writing instrument using ink such as a stylograph, a felt-tip pen, etc., and other liquid applicators and, more particularly, a liquid applicator for driving

  the liquid to its part of application.

  In the prior art, there is a liquid applicator in which: a reservoir for receiving the application liquid is formed inside the handle of the applicator, the reservoir communicating with the application part; an axially movable element such as

  that a piston is mounted in the tank; a rotating element

  tif control is provided in the rear end of the man-

  of the applicator, and is rotated in a manner

  re to move the movable element forward in the axial direction so that the application liquid is sent

  in its part of application from the tank of the ap-

  plier. A conventional liquid applicator of this type 2. is described in, for example, the publication of the model

Japanese utility No. 50-10925.

  However, in a conventional applicator of

  this type, if it is necessary to maintain

  set the flow rate of the liquid to a certain value, that is to say in the case where the element movable in the axial direction,

  such as the applicator piston, advances to a certain

  speed, it is necessary to precisely control the rotary applicator control element during its

  rotation. However, it is very difficult for the user.

  to precisely control this element even when

  that a graduated scale has been provided on a rotary button that includes the applicator control element, because

  reading this scale tires the user and

  due to bad interpretations. A bad reading often has the consequence that the rotary control element is turned in the opposite direction, so that the air is drawn into the reservoir of the applicator and is expanded when the temperature increases. Such expansion of the air in the tank causes the fall

  liquid from the liquid application element

  of. These are problems inherent in the applica-

  liquid liquid. Therefore, the present in-

  vention has for object an improved applicator of

  which solves the problems just exposed.

  The subject of the present invention is an applica-

  improved liquid tester such as an instrument for

  beauty treatments, writing instrument, etc. understand

  nant: a main tubular handle; an element of ap-

  plication of liquid connected to the front end of the man-

  che; a liquid reservoir communicating with the liquid application element, this reservoir being provided in the handle; a piston mounted in the tank so as to be able to slide axially while being brought into 3.

  waterproof contact with the tank; a file rod

  tee connected to the piston, this rod having a

  threaded tie at least in its rear part; a stop member to avoid rotating the threaded rod; a rotary control handle mounted so as to be able to turn into the rear end of the main handle while being inserted therein, this rotary handle being unable to move in the axial direction and comprising an elastically deformable engagement piece at its front end being in

  protruding thereon; a means for driving the spindle

  tee, this means being in one piece with the rotary handle of

  order inside of it; and a part conca-

  ve-convex in an inner wall of the main handle,

  this part always being in contact with the piece of

  elastically deformable in order to be able to

  move in one direction relative to this part

  this. It is preferable that the concave-convex part

  of the main handle of the applicator of the present invention

  tion consists of a vertical wall extending pa-

  parallel to the longitudinal axis of the handle and a part

  king oblique to the vertical wall at an acute angle, and that vertical and oblique walls of this

  type are placed at intervals spaced a certain

close distance.

  The means of driving the threaded rod

  the applicator can be a threaded hole made inside

  laughing rotary handle or a separate element

  having a female thread located in the central part

  trale of the separate element which is engaged with the threaded part of the rod, the separate element being fixed to the handle

  rotary control inside of it.

  A multitude of elastically deformable engagement parts can be provided in the applicator.

liquid of the present invention.

  4. The present invention will be well understood when

  the following description made in conjunction with the drawing

attached in which:

  The single figure is a longitudinal section view

  nale of an embodiment of the liquid applicator

of the present invention.

  An embodiment of the liquid applicator of the present invention will be described below in the case of an instrument making it possible to emphasize the outline.

eyes.

  As shown in the drawing, the reference 1 represents a main tubular handle of the liquid applicator of the present invention. In the front end of the handle 1, there is provided a projection 2, of small diameter,

  in the front end of which a brush 11 is mounted

  tee which has a rear edge 13 in its base. A barrel

  front 12 is screwed into the projection 2 of the handle 1 by the

  rim 13 so as to fix the brush 11

on the handle.

  Reference 10 represents a liquid conduit

  which communicates the brush 11 to a liquid reservoir 14 formed in the handle and containing the liquid

  of application. The conduit 10 is mounted in a hole

  in the projection 2 of the handle 1 while being inserted therein

  so that the front end of the duct projects out towards the former

  front end of projection 2, to enter

in brush 11.

  The brush 11 communicates with the reservoir 14 via the conduit 10 so that the liquid

  is applied to the mrosse via this con-

pick 10.

  The internal diameter of the main handle 1 increases in steps so as to form: a first internal part constituting the bore of the projection 2 of small diameter, a second internal part 5 5. located at the rear of the first part whose diameter is greater than that of this first part and which forms the reservoir 14; a third interior part 6

  placed at the rear of the second part 5, the diameter of which

  tre is greater than that of the second part; and a fourth inner part 7 located at the rear of the third part 6, the diameter of which is greater than that of the third part. 4 and 4 'shoulders

  are formed between the second part 5 and the third part

  tie 6 and between part three 6 and part four

tie 7, respectively.

  A sawtooth concave-convex part 8 is provided in line with the shoulder 4 and comprises: vertical walls extending substantially parallel to the longitudinal axis of the handle 1; and walls oblique to the vertical walls at an acute angle, the vertical walls being spaced alternately from

oblique walls.

  A groove 9 is formed in the inner wall

  lower of handle 1 near the rear end of the handle

  che extending in the circumferential direction of

the inside wall of the handle.

  A piston 16 is inserted into the reservoir 14 of

  so that it can slide in the axial direction. The liqui-

  of application is received in the reservoir 14 at the front of the piston 16. O-rings 15 are mounted on the outer peripheral surface of the piston 16 so that

  the piston is in watertight contact with the surface

  ce inside the tank 14 and that the application liquid

  cation cannot escape from the tank. It is possible to replace the O-rings 15 by any other means

  suitable to prevent the liquid from escaping-

eg from the tank.

  A threaded rod 18 is fixed to the rear side of the piston 16 and passes through the third interior part 6 6.

  from handle 1 to enter its fourth interior part

  re 7. The rear half of the rod 18 has a threada-

  male, while the front half is not threaded and

forms a square column.

  It is possible that the threaded rod 18 forms

  a square column on its entirety. In this case, the ar-

  the longitudinal rods are threaded.

  It is also possible that the threaded rod 18

  is entirely in the form of a circular column.

  The reference 19 represents a stop means preventing the threaded rod 18 from rotating about its longitudinal axis, provided that this stop means allows the

  rod to move axially relative to handle 1.

  The stop means 19 comprises a central hole 20, the shape of which corresponds to that of the cross section of the front half of the rod 18, so that the rod is inserted by sliding in the central hole 20 of the stop means 19 Consequently, it is possible that the threaded rod 18 can move axially relative to the means of

  stop 19, but cannot rotate around its longitudinal axis

  nal. In the case where the assembly of the threaded rod 18 has the shape of a circular column, another stop means is required. For example, this other stop means can be

  consisting of a rib extending in the long direction

  gitudinal of handle 1 in one piece with the peri-

  outer ball of rod 18, provided that the hole cen-

  tral 20 has a shape corresponding to the cross section

  of the rod 18 comprising the rib.

  Reference 21 represents a rotary handle

  the front half 22 of which is rotatably mounted

  tion in the fourth inner part 7 of the main handle

  cipal 1. The outside diameter of half 22 is slight-

  less than the inside diameter of the fourth part

  tie 7 so that it mounts in the fourth inner part 7 of the handle 1. The outer diameter of the 7. rear half 23 of the handle 21 corresponds substantially to

  outside diameter of the rear end of the main handle

cipal 1.

  An annular rib 24 corresponding to the ra-

  nure 9 of handle 1 is formed in the peripheral surface

  outside of the front half 22 of the handle 21 to a

  right corresponding to the groove 9 when the handle 21

  is mounted in the fourth inner part 7 of the man-

  main che 1. The rib 24 is engaged in the groove

  re 9 so that the handle 21 is rotatably mounted in

  the rear end of the handle 1, not being able to come off

place in the axial direction.

  An elastic deformable engagement part 26

  ment having a hook 25 at its front end, is placed in the surface of the front end of the handle 21 while projecting therefrom. Although in the embodiment shown in the drawing there is only one part 26, it is possible to provide a multitude of parts 26 in the surface of the front end of the handle 21. The length of the part d commitment 26 is settled

  so that the hook 25 reaches the concave part

  convex 8 of the shoulder 4 'of the handle to engage

  in it when the handle 21 is mounted in the former

  rear end of the main handle 1. In this case, the

  chet 25 curves to be adapted to the oblique wall of

  the Fartie 8. As the hook 25 is deformed elastic-

  ment to pass the oblique wall of part 8, the man-

  che 21 can rotate counterclockwise as viewed from the rear end of the embodiment of the liquid applicator of the present invention. In other words, the handle 21 cannot rotate clockwise, because the hook 25 abuts against the vertical wall of the part

  concave-convex 8 to act when stopped.

  Inside the handle 21, an element 8.

  27 is attached, which has a female thread

  in its central part, female thread which is engaged with the threaded part of the rod 18. The drive element 27 can be fixed to the handle 21 by any suitable means. It is also possible

  to replace the drive means 27 with a threaded hole

tee in the handle 21.

  The threaded part, or male thread, of the ti-

  ge 18 is engaged with the female thread of the drive element 27 and moves the rod 18 forwards when the rotary control handle 21 is driven by a

  rotational movement by the user in the direction

tion indicated above.

  The threaded rod 18 has a sufficient length for it to be possible to move the piston 16 towards

  the most forward position in the liquid tank

quide 14.

  The previous components of the applicator

  of the present invention may be

  made from any conventional material. It is also possible to cover the brush 11 with a

  cap (not shown) so as to protect it

be the damage.

  In operation, the user turns the man-

  rotary control che 21 so that the piston 16

  moves forward under the effect of the threaded rod 18.

  Since the handle 21 is fixed in the direction

  axial position of the main handle 1, the hook 25 of the engagement part 26 produces a click each time it passes in line with the oblique wall of the part

  concave-convex 8 of the handle 1. When walking, the

  the reader can detect the click thus produced by ear

  the and to the touch. Therefore, it is very easy

  for the user to order handle 21 for intro

  mix the application liquid in the brush 14 to 9.

  from the reservoir 11 via the piston 16.

  Since the handle 21 cannot be turned in the opposite direction, there is no risk of the piston moving backwards and causing the entry of air into the reservoir 14. The present invention does not is not limited to the exemplary embodiments which have just been described, it

  is on the contrary subject to modifications and

  laughing who will appear to those skilled in the art.

10.

Claims (4)

  1 - Liquid applicator such as a beauty treatment instrument, a writing instrument, etc. characterized in that it comprises: - a main tubular handle (1); a liquid application element (11) connected to the end   front of the handle; a liquid reservoir (14) communicated   as for the application element, this reservoir being pre-   seen in the handle; a piston (16) mounted in the tank   so that it can slide axially while being   born in watertight contact with the tank; a ti-   threaded ge (18) connected to the piston, the rod having a male thread at least in its rear part; stop means (19) for preventing rotation of the threaded rod; a rotary control handle (21) rotatably mounted in the rear end of the main handle while being inserted therein,   the rotary handle cannot move in the direction   axial tion of the main handle while comprising an engagement part (26) elastically deformable at its front end while projecting therefrom; a   means (27) for driving the threaded rod, this means of   undercarriage being mounted in the rotary control handle   of; and a concave-convex part (8) provided in the part   inner king of the main handle, this part being   always in contact with the deformed engagement piece   elastically so that it can move   in one direction only relative to the engagement piece gement.   2 - Liquid applicator according to the claim   tion 1, characterized in that the concave-convex part (8) of the main handle comprises vertical walls   extending while being practically parallel to the axis lon-   gitudinal of the handle and oblique walls with respect to the vertical walls at an acute angle, the vertical walls being spaced alternately with the 11. oblique walls. 3 - Liquid applicator according to claim 1, characterized in that the means (27) for driving the threaded rod consists of a threaded hole formed in the rotary control handle (21), this threaded hole being a through hole.   4 - Liquid applicator according to the claim   tion 1, characterized in that the means (27) for driving   ment of the threaded rod (18) consists of a separate element in which is made a female thread which engages with the male thread of the threaded rod, this separate element being fixed inside the rotary handle control (21).   - Liquid applicator as claimed -   tion 1, characterized in that a multitude of pieces of   clearance (26) are provided in the front end of the man- rotary control che.