FR2577474A1 - FELT-TYPE WRITING INSTRUMENT - Google Patents

Abstract

A WRITING INSTRUMENT FOR SPECIFIC LIQUID INCLUDES AN AIR INTRODUCTION CHANNEL FOR INTRODUCING A CERTAIN QUANTITY OF AIR FROM THE EXTERIOR UNDER THE SUCTIONING EFFECT OF A VALVE BODY ASSEMBLY 42. IT CONTAINS A LIQUID SUPPLY CHANNEL FROM A TANK 45 HAVING MULTIPLE LONGITUDINAL HOLES AND SPACES AT THE TIP OF THE FELT 9 THROUGH A CYLINDER PLACED BETWEEN THE TANK AND THE TIP, OUTPUT HOLES 17, AND BEING PROVIDED IN THE FELT POINT 9 SO THAT AT LEAST ONE OF THE HOLES AND ONE OF THE ORIFICES ARE ALWAYS ALIGNED TO ALLOW THE PASSAGE OF THE LIQUID. THE INSTRUMENT HAS A MOUTH 4 AND A MOUTH ELEMENT 29 AND A LIQUID RESERVOIR WHICH INCLUDES A VALVE BOX ASSEMBLY CYLINDER 39 AND IS CONNECTED TO THE MOUTH WITH INTERPOSITION OF A GASKET 31 A CONCAVE PART WHICH FORM A CAVITY CONTIGUATED TO THE WALL SURFACE OF A TRIM 30 GROOVE.

Description

The present invention relates to an instrument

  felt-type writing instrument (hereinafter referred to as an instru-

  writing), which is particularly suitable for

  writing with a liquid having a high viscosity (de-

  signed below by specific liquid), for example from

  ink or paint consisting mainly of a pig-

  ment, having large particles of high viscosity, quick-drying ink or paint, lubricating oil,

  adhesives or cosmetic liquid.

  In the prior art, since the specific liquid is viscous and / or prone to rapid drying because of the solvents, it is not possible to use a conventional type

  writing instrument without making certain modifications

  cations or improvements. More specifically, the liquid

  may clog the ink passage channel, or the

  green of an ink tank. Therefore, he was born

  stop improving in particular the flow of liqui_

  specific of a writing instrument, to protect the eva-

  poration of the specific liquid during storage and its

use, etc.

  The present invention relates to an instrument

  of advanced writing which presents the function of four-

  regularly fill a specific liquid at the end of a pen, felt-tip, etc. without clogging of the liquid passage channel during its use.

  The present invention has for another object an ins-

  improved writing tool which prevents damage

  accidental placement of the recess and furnace part

  a specific liquid at the top of the ins

  furrow during transport, storage and handling

  tion. According to a first aspect of the present invention, a writing instrument for specific liquid has a

  air introduction channel allowing the outlet of the quan-

  necessary air quantity of the instrument by the suction effect

  tion of a body - valve / piston assembly.

  According to a second aspect of the present invention, a writing instrument for specific liquid comprising

  a channel capable of supplying the liquid at any time from

  shot from an ink tank at the tip of a felt tip by the

  through a liquid supply cylinder, is characterized in that the reservoir has multiple liquid passage holes which are elongated in the longitudinal direction and spaced from each other and, the cylinder

  being placed between the reservoir and the tip of the felt,

  carries liquid outlet ports on its peripheral wall

  risk, so that at least one of the holes and one of the ori-

  output sockets can always be aligned to allow

be the passage of the liquid.

  According to a third aspect of the present invention, a writing instrument for specific liquid comprising

  a liquid tank having a valve boot assembly

  pet / cylinder, a mouthpiece and a mouthpiece, is characterized in that a liquid reservoir is connected to the mouthpiece interposed with a gasket having

  a concave part which forms a cavity contiguous to the over-

  wall face of the lining groove.

  According to a fourth aspect of the present invention

  tion, a writing instrument for specific liquid pre-

  feeling a hat on the tip of the felt, is characterized in that the hat can be detached from the tip for

  be inserted in a concave part of the upper portion

  re of a sleeve forming a sleeve so that the end

  hat can be placed on the upper end

  of an ink bottle or a piston rod,

  helping to push it in.

  The present invention will be well understood during

  the following description made in conjunction with the drawings

  attached in which: Figure 1 is a longitudinal sectional view of

  the felt type writing instrument of this invention

  vention; Figure 2 is an exploded perspective view of this instrument; Figure 3 is a running view taken along line A-A of Figure 1;

  Figure 4 is a longitudinal view of the instru-

  writing at the end of a pressing operation; Figure 5 is a longitudinal sectional view of the writing instrument in the case where the penetration is completely released; and FIG. 6 is a view in longitudinal section of the writing instrument when the driving operation is stopped at mid-distance; Figure 7 is a sectional view taken along line B-B of Figure 1; and Figure 8 is a longitudinal sectional view of the writing instrument which contains a specific liquid

  in the body according to the present invention.

  In order to avoid the first disadvantages mentioned above, the writing instrument of the present invention has several improvements making it possible to supply: easily the specific liquid at the tip of the felt; (1) the writing instrument provides channels

  introducing air which force the outside air in

  laughing at the instrument so as to make it pass regularly-

  a specific liquid from its storage part at the top

  points without causing the clogging of a canal

passage of the liquid.

  (2) the writing instrument also provides a specific liquid passage channel which has longitudinally elongated liquid passage holes and outlet orifices provided in the peripheral wall

  of a cylinder, and the positions between the holes and the ori -

  outlets are such that at least one of the holes and one of the orifices can be aligned for the passage of the

  liquid whatever the spin formed.

  (3) the writing instrument further comprises a sealing means consisting of a seal at the rear end of the piston rod or opening of the bottle of liquid so as to close the opening of the bottle or of the hole in the piston rod. A concave part has been made in the lining so that an interstice

  is formed after placement on the groove for

ture.

  Also in the writing instrument of the pre-

  invention, there is provided a means for introducing

  this specific liquid, this means of avoiding

  liquid leaks during storage, shipping and use

  as indicated above.

  (4) The writing instrument has a protective

  tion, such as a felt tip cap, which can be removed and fixed in the concave rear end of the instrument, this cap having a sufficient length to be fixed to the top of the driving part, o his

  positioning below the rear of the instrument

  so that the effect of sinking can be extended.

  Thus, the tip of the felt of the writing instrument

  ture is covered, for example, by the hat, when

  is not used, and the depression causing the supply of

  re specific liquid can not be caused because the point allowing it is not protruding on the rear end

of the instrument.

  ! 0 The cap is removed from the top of the felt tip when the writing instrument is in use, and

  fixes it to the concave part of the rear end of the ins

  furrow so as to cause the introduction of the liquid.

  The previous four features are

  nies in the writing instrument of the present invention.

  In the embodiment of the present invention

  tion, a mouthpiece 4 is made of hard plastic material, ma-

  niere to present a thick part 1 in the form of a sleeve and a thin part 2 in the form of a sleeve, in one piece with the part 1 by means of a first step 3. In the inner surface of the part 2, there is spared four

  longitudinal cross grooves 5, each groove extends

  between the upper edge of part 2 and the neighbor-

  age of its lower edge. In addition, in the first tier 3, four lateral grooves 5 ′ have been provided, each extending between the longitudinal groove 5 and the vicinity of the outer periphery of the

  first tier 3; in the inner periphery of part 3 we have mixed

  swam an annular groove 6. The tip of the felt of 1! instrument consists of thermoplastic filaments which are joined

  in a bundle to form the felt, then the upper end

  of the felt thus formed is subjected to a fusion at the

  heat so as to form a point 9 having a re-

  edge 8 in its outer and upper peripheries as a mounting means. At this point, an ink guide hole 7

  of small Jiamatre having the shape of an inverted cone is also

  loosely formed in the central part of the tip 9 so

  step to extend between the upper end of the tip 9 and approximately its middle part. The point

  9 thus formed is inserted into part 2 of the mouthpiece

  re 4 by dropping it there so that the flange 8 is inserted into the annular groove 6 of the mouth. Next, a disc-shaped plate 10, made of hard plastic material

  and whose outer diameter is identical to the inner diameter

  part 1 of the mouthpiece, is placed on the -

  first tier 3 of the mouth. In the central part of the plate 10, an ink passage hole 11 is provided

  which communicates with the ink guide hole 7 of the punch

  te 9. In the lower surface of the plate 10, there has been

  ge an annular groove 12 having the hole 11 for passage of

  creates at its center and a transverse groove 13 opposite the lateral grooves 5 of the mouth 4 after setting

  place of the plate 10, groove 13 which is connected to the groove

  re annular 12 at its outer ends and at hole 11 at its center. In the upper surface of the plate 10,

  an insertion part 14 has been provided in one piece,

  short sleeve sleeve, which has the hole 11 at its center. An ink conduit 16 made of plastic material

  hard has a closed upper end and a

  lower tee open so as to act as a valve stem or piston rod. In opposite 7 'side walls

  the upper end of the conduit 16, two orifices have been provided

  ink output fices 17. In the upper surface of

  the upper end of the duct 16, a sail-

  insertion lie 18 in one piece. In the outer periphery

  lower end of conduit 16, provision has been made

  in one piece a seat 20 which has the shape of a small cup

  poured and has a rim 19 extending outwards.

  The ink conduit 16 thus formed is inserted into the part

  1 in the form of a thick sleeve of the mouth 4 leaving it there

  sant to fall so as to seat the seat 20 on the disc-shaped plate, so that the lower part of the conduit 16 is inserted into the part 14 of the plate 10 and that its inner hole 12 communicates with the through hole 11 ink from plate 10. A sleeve 24 in the form of a sleeve consists of a thin metal tube

  and has a male thread 23 in the peripheral surface

  that outside of its lower part, the ends su-

  and lower part of the sleeve 24 being open. The sleeve 24 is connected to the mouth 4 by screwing between the male thread 23 and a female thread 25 provided on the inner surface of the part 1, so that the edge

  lower end 26 of the sleeve 24 stresses the surface

  of the flange 19 of the conduit 16 to fix the plate 10 and the conduit 16 in place, so that the point 9 of the felt is maintained while being directed downward by the plate and that the conduit 16 is directed upward. Under these conditions, a clearance is formed between the peripheral surface

  outside of the tip 9 and the inner peripheral surface

  of the sleeve 2 of the mouthpiece 4. A mouthpiece element

  chure 29 in the form of a plastic tube has a small diameter in the conical part and a short length in the front and a second step 28 in the surface

  lower peripheral of its middle part. In the over-

  upper face of the second step 28 of the element 29, we have

  formed a groove 30 for lining which is radially open

  upwards and in which we insert a gar-

  niture 31 in the form of a torus which has a concave part 33 forming a cavity 32 contiguous to the wall surface of

  the groove 30 when the lining 31 is inserted in this

  groove you. A valve box / cylinder 39 assembly made of material

  plastic ria includes: a rim 35 extending towards the ex-

  in the outer periphery near its inner edge

  lower; a valve seat 36 in the inner peripheral surface of its middle part, three through holes 37

  ink lengthened longitudinally in the peripheral wall

  than its upper half, these holes being spaced apart

  from each other, and a guide hole 38 in its top wall

  lower, respectively. In this assembly 39 is inserted a valve body / piston assembly 42 which has an insertion hole 40 in the central part of its lower surface.

  upper and a guide rod 41 in its upper surface

  re, respectively. The assembly 42 is in sliding contact

  with the inner peripheral surface of the upper half

  of the assembly 39, in its external peripheral surface

  while being guided by the hole 38 of the assembly 39

  in its rod 41, so as to allow an upward movement

  up and down from set 42 to set 39. A

  spiral spring 43 is mounted around the guide rod

  ge 41 of set 42 in set 39, so it

  gives an upward force to the assembly 39, to the lining

  re 31, the mouthpiece 29 and a bottle of

  cre 45. At this stage, the assembly 39 is inserted in the element

  29 by dropping it so as to sit on the floor

  cond step 28 of element 29, while the bottle of in-

  cre 45 which consists of a thin metal tube presented

  both a closed upper part and a male thread 44 in the outer peripheral surface of its open lower end and contains, for example, a gold or silver ink, is connected to the element 29 by screwing

  the male thread 44 of the bottle 45 and the female thread

  46 of the inner surface of the element 29, so that the lower end of the bottle thus connected requests the upper surface of the rim 35 of the valve / cylinder 39 assembly and that the lower surface of

  this set is fine in firm contact with the surface

  of the lining 31 inserted in the strap 30 of

  the upper surface of the second step 28 of the element 29.

  In addition, the bottle 45 thus assembled is inserted into the sleeve 24 so that the conduit 16 is inserted in the lower opening of the mouthpiece 29 and that the outer peripheral surface of its middle part

  is brought into firm contact with the peripheral surface

  of the lining 31 and that the projection 18 is inserted

  in the hole 40 of the valve body / piston 42 assembly.

  next, an edge reinforcement element 47, in the form of a ring,

  is fixed in the upper opening of the sleeve 24 to reinforce

  dre impossible the extraction of the bottle 45 out of the man-

  chon 24. A hat 49 made of plastic material intended to cover

  screw the tip 9 of the felt to an outline and dimensions

  such that it can be removably inserted into the

  tie 2 in the form of a sleeve end of the mouth 4 and be in-

  releasably seated in the upper part of the sleeve 24.

  A tail plug 50 which is removed during use

  The instrument is inserted firmly into the upper end of the sleeve 24 so that its inner end

  abuts the upper end of the ink bottle 45.

  More precisely, during use, the user of the instrument first removes the plug 50 and the cap 49 fixed to the mouthpiece 4, then inserts the cap 49 into the concave part 51 of the upper end of the sleeve 24 of

  so that the bottom end of this hat is placed

  created on the upper end of the ink bottle 45.

  When the user depresses the cap 49, the bottle

  ink 45, the valve box / cylinder 39 assembly, the

  ture 31 and the mouth element 29 are driven towards the

  low against the ascending force conferred on them

  ree by the spiral spring 43. At the beginning of this movement

  descending from the cap 49, the outside air is intro

  duit in the space formed below the lower surface

  re of the valve body / piston 42 assembly by the effect of

  pirating of this assembly by means of the clearance 9 ', longitudinal grooves 5, lateral grooves 5', of the

  annular groove 12, transverse groove 13, con

  ink supply 16 and ink outlet ports 17o

  that we continue the downward movement of the cap 49, the es

  pace located below the lower surface of the whole

  ble 42 increases in volume to finally communicate with the interior space of the bottle 45 when the orifices 17 open into the interior space of the bottle 45 above the seat 36, so that part of the ink of the

  bottle 45 is replaced by the outside air thus introduced

  duit and flows down to enter the space below the lower surface of the assembly 42 by

  passage in the holes 37. At the end of the insertion of the cha-

  skin 49, the ink bottle 45, the valve / cylinder boot assembly 39, the lining 31 and the mouthpiece element 29

  are driven upward by the upward force

  given to them by the spiral spring 43.

  In this upward movement, when the lower end of the hole 37 is at the same level as the lower surface of

  the assembly 42, the ink being in the space situated above

  below this assembly is transferred to the ink duct 16 via the ink outlet orifices 17. More precisely, when the operation of driving in the cap 49

  and its release are repeated alternately, the ink

  closed by the bottle 45 is gradually replaced by the outside air to be introduced into the tip 9 of the felt via the ink conduit 16 and the hole

  7 ink guide of this tip, so that the point

  is moistened with the ink thus introduced.

  As previously described, the upper half

  lower tip 9 is inserted into part 2 in the form of a thin sleeve of the mouth 4 so that its upper edge 8 are seated in the annular groove 6 of this part 2, while a clearance is provided between two surfaces ,

  one of which is the outer peripheral surface of a

  tie of the tip 9, portion existing in the part 2 of the mouth 4, and the other being the inner peripheral surface of the part 2 so that the tip 9 is -11 held so as to be able to arch at the interior of

part 2.

  The present invention is not limited to the example

  full of achievement just described; she is at the cons

  milking subject to modifications and variations which

will appear to those skilled in the art.

Claims (7)

  1. Writing instrument for specific liquid, characterized in that it has an introduction channel   air through which the required amount of air is in-   troduite from the outside of the instrument under   the suction effect of a valve body / piston assembly (42).   2. Writing instrument according to claim   1, characterized in that the air introduction channel comprises   carries a clearance (9f), a longitudinal groove (5), a groove   lateral re (5 '), an annular groove (12), a transverse groove (13), an ink duct (16), and orifices ink outlet (17).   3. Writing instrument for specific liquid which has a liquid passage channel making it possible to supply the liquid at any time from a reservoir   (45) of liquid at the tip (9) of a felt through   diary of a liquid supply cylinder (21), characteristic   terized in that the reservoir has multiple holes   liquid passage (37) which are elongated longitudinal-   and spaced from each other, and cylinder 21, of   supply of liquid, placed between the reservoir and the   te of felt, has liquid outlet holes (17) at its peripheral wall, so that at least one   holes (37) and one of the outlet openings (17) is   wind always aligned to allow the passage of the liquid.   4. Writing instrument according to claim 3, characterized in that the liquid passage holes are three in number.   5. Writing instrument for specific liquid   comprising a liquid reservoir having a box assembly   valve / cylinder (39), a mouth (4) and an element   mouth (29), characterized in that the liquid reservoir   which is connected to the mouth with the interposition of a gasket (31) having a concave part which forms a cavity contiguous to the wall surface of the rainture (30) for garnish.   6. Writing instrument according to claim, characterized in that the lining has the shape of a torus. 7. Writing instrument for specific liquid having a cap (49) on the tip (9) of a felt, characterized in that the cap can be detached from the tip and inserted into the concave part of the upper part   a sleeve-shaped sleeve (24) so that the end   Bottom tee of the hat can be placed on the top end of an ink bottle (45) or a rod   piston, helping the pushing movement.