FR2577473A1 - IMPROVEMENT FOR FELT-TYPE WRITING INSTRUMENT - Google Patents

Abstract

A FELT-TYPE WRITING INSTRUMENT IS IMPROVED IN THE WRITING FEEL IT PROVIDES AND ITS ANTI-INK DRYING PROPERTIES, IN THE MEANING THAT HALF OF POINT 9 OF THE INSTRUMENT IS COVERED WITH 'A SLEEVE-SHAPED ELEMENT 4 SO THAT THERE IS A GAME 9 BETWEEN TWO SURFACES, ONE OF THEM BEING THE OUTER PERIPHERAL SURFACE OF A TIP PORTION, THE PORTION COVERED BY THE SLEEVE, AND THE OTHER BEING THE INNER PERIPHERAL SURFACE OF THE SLEEVE-SHAPED ELEMENT, SO THAT THE TIP IS MAINTAINED BY BEING ABLE TO CAMBER INSIDE THE SLEEVE-SHAPED ELEMENT WHILE CAN ALSO CAMBER TOWARD THE OUTSIDE OF THIS ELEMENT, THAT IS TO SAY THE TIP CAN BE CAMBERED PRACTICALLY THROUGH ITS LENGTH INSIDE AND OUTSIDE OF THE SLEEVE-SHAPED ELEMENT.

Description

1.

  The present invention relates to an improvement

  brought to a felt-like writing instrument.

  In the prior art, in this type of writing device, the tip of the felt is constructed so that only its front part, which extends outwards from the front end of a shaped element. sleeve there

  now can arch during writing.

  The classic writing instrument of this type

  has the disadvantage of giving a bad impression of writing

  ture which is due to the too short length of this part

  front of the tip can be arched.

  An object of the present invention is to avoid

  the previous drawback by providing a clearance between two sur-

  faces, one being an outer peripheral surface of a rear part of the tip, rear part which extends into the sleeve-shaped element used for mounting

  the tip of the instrument, and the other being a small surface

  inner rim of the sleeve-shaped element

used to mount the tip.

  In addition, another object of the present invention 2. is a writing instrument of the felt type which makes it possible to

  resolve the above disadvantage of conventional instruments

  ques, by providing a clearance between two surfaces, one being an outer peripheral surface of a part of the tip, part which exists in the sleeve-shaped element for mounting the tip of the instrument and the other being an inner peripheral surface of this sleeve-shaped member, so that a part capable of

  to be arched from the point is elongated, the upper half

  re of the tip being inserted into the element in the form of

  sleeve to be fixed at its upper end to the ex-

  upper end of the sleeve-shaped element.

  The present invention will be well understood when

  of the following description made in conjunction with the

  attached sins in which: Figure 1 is a longitudinal sectional view of the felt type writing instrument of the present invention; Figure 2 is an exploded perspective view of the instrument; Figure 3 is a sectional view taken along line A-A of Figure 1;

  Figure 4 is a longitudinal view of the ins-

  writing tool at the moment when a pressing action has just ended; Figure 5 is a longitudinal sectional view

  of the instrument in case the insertion is complete-

  ment released, and Figure 6 is a longitudinal sectional view of the instrument in which the driving action is

stopped halfway.

  In the embodiment of the present in-

  vention, a mouthpiece 4 is made of plastic material.

  that hard and has a thick part 1 and a thin part

  ne 2 both in the form of a sleeve, part 2 being 3.

  connected to part 1 by a first tier 3.

  In the inner surface of the part 2 are formed four longitudinal grooves 5 arranged in a cross, each groove extending between the upper edge of the part 2 and the vicinity of its lower edge. In addition, in the first step 3, four lateral grooves 5 ′ have been provided, each extending from

  the longitudinal groove 5 to the vicinity of the periphery

  external line of the first step 3, an annular groove 6

  being provided in the inner periphery of part 3.

  The tip of the writing instrument is made up

  of a plurality of thermoplastic filaments which are collected

  bundled to form the felt, then the upper end

  the felt thus formed is subjected to a melting operation, so as to form a point 9 comprising a

  rim 8 in its upper and outer peripheries acting

health in mounting.

  At this stage, an ink guide hole 7 of small diameter having the shape of an inverted cone is also formed in the central part of the tip 9 so as to

  extend between the upper end of the point and about

  in its middle part. The point 9 thus formed is inserted into part 2 of the mouthpiece 4, dropping it there so that the flange 8 is inserted into the groove

ring 6 of the mouth.

  Then, a plate 10 in the form of a disc, made of hard plastic material and whose outside diameter is

  the same as the inside diameter of part 1 of the em-

  mouth, is placed on the first step 3 of the mouthpiece

  re 4. In the central part of the plate 10, an ink passage hole 11 has been formed which communicates with the hole 7

  tip ink guide 9. In the lower surface

  re of the plate 10 an annular groove 12 having the ink passage hole 11 at its center has been made and a transverse groove 13 which is opposite the lateral grooves 5 4. of the mouth 4 after mounting of the plate 10 , groove

  13 which is connected to the annular groove 12 at its ends

  outside tees and at hole 11 for ink passage at its center

  be. In the upper surface of the plate 10, we have

  seen an insertion part 14 in the form of a short sleeve which has at its center the hole 11 for ink passage. An ink conduit 16 made of hard plastic material has a closed upper end and an open lower end so that it acts as a valve stem or piston rod. In the opposite side walls of

  the upper end of the conduit 16 has been provided two ori-

  ink output fices 17. The upper surface of the former

  upper end of the duct 16 has a projection 18 in

  a piece. The outer periphery of the lower end

  re of the conduit 16 has in one piece a seat 20 having the shape of an inverted cup which has a flange 19

extending outward.

  The ink conduit 16 thus formed is inserted into the sleeve 1 of the mouthpiece 4, dropping it there so as to rest its seat 20 on the outlet plate 10 so that the lower part of the conduit 16 is inserted in the part 14 of the plate 10 and that its internal hole 21 communicates with the hole 11 of the plate 10. A sleeve 24 forming a handle consists of a thin metal tube and

  has a male thread in the peripheral surface ex-

  t its lower part, the upper ends

  and lower 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 24 provided on the inner surface of the sleeve 1, so that the lower end edge of the sleeve 24 urges the upper surface of the flange 19 of the conduit 16 to fix the plate 10 and the conduit 16 in place, the tip 9 is held in the bottom direction by the plate 10 and 5. the conduit 16 is directed upwards. The result

  that a clearance is formed between the outer peripheral surface

  re of the tip 9 and the inner peripheral surface of the sleeve 2 of the mouthpiece 4. A mouthpiece element 29 in the form of a plastic tube has a small diameter in a conical part and a short length part

  at the front and a second step 28 in the peripheral surface

  lower risk of its middle part. In the upper surface

  of the second tier 28 of the mouthpiece element 29,

  has provided a lining groove 30 which is open radially.

  upwards and in which a garment is inserted

  niture 31 in the form of a torus having a concave part 33 which forms

  me a cavity 32 contiguous to the wall surface of the groove

  re 30 when the gasket is inserted in the groove. A valve box / cylinder assembly 39 made of plastic material comprises: a flange 35 extending outward from the outer periphery near its lower edge, a valve seat 36 in the inner peripheral surface of its

  middle part, three longitudinal holes for passage of

  cre 37 in the peripheral wall of its upper half, these holes being spaced from each other, and a guide hole 38 in its upper wall, respectively. In

  this assembly 39 is inserted a valve body / pis-

  tone 42 which has an insertion hole 40 in the central part of its lower surface and a guide rod 41 in its upper surface, respectively. The assembly 42 is in sliding contact with the inner peripheral surface of the upper half of the assembly 39, in its outer peripheral surface, while it is guided by the hole 38 of the assembly 39 in its rod 41, of so as to allow the upward and downward movement of the assembly 42 in the assembly 39. A spiral spring 43 is mounted around the guide rod 41 of the assembly 42 in the assembly 39, so that it gives an ascending force to the assembly 39, to the lining 31, to the element 6 of mouth 29 and to an ink bottle 45. At this stage,

  the valve / cylinder 39 assembly is inserted into the element

  mouth 29 by dropping it there so as to

  be seated on the second tier 28 of the mouthpiece element

  re 29, while the ink bottle 45 which is made of thin metal tube having a closed upper part and a male thread 44 in the peripheral surface

  outside of its lower end open and con-

  holds, for example, a golden or silver ink, is connected to the mouthpiece element 29 by screwing between

  its male thread 44 and female thread 46 of the surface

  this inner part 29, so that the end in-

  bottom of the connected bottle requests surface

  this upper edge 35 of the valve box / cylinder 39 assembly so that the lower surface of this assembly

  either in firm contact with the upper surface of the

  niture 31 inserted in the groove 30 of the upper surface

  re of the second tier 28 of the mouthpiece element 29. Or

  tre, the ink bottle 45 thus assembled is inserted into the sleeve 24 forming a handle so that the conduit

  ink 16 is inserted into the lower opening of the element

  mouth 29 so that the outer peripheral surface

  lower part of its middle part is brought into firm contact with the inner peripheral surface of the lining 31

  and that the projection 18 is inserted into the hole 40 of the

  seems valve body / piston 42. Next, an element 47

  edge reinforcement, ring-shaped is fixed in the

  upper groove of sleeve 24 to prevent removal

  ment of the bottle 45 of the sleeve 24. A cap 49 made of

  plastic material intended to cover the tip 9 has di-

  mensions and an outline such that one can insert part 2 in the form of a sleeve from the mouth 4 and that itself can be inserted in a removable manner in the upper part

sleeve 24.

  A tail plug 50 which is removed for use 7. is inserted into the upper end of the

  sleeve 24 so that its inner end abuts

  be the upper end of the bottle 45.

  More specifically, when using the ins-

  writing tool, first remove the plug 50 and the cap 49 attached to the mouth 4, then insert the cap 49 into a concave part 51 of the upper end of the sleeve 24 so that the lower end of this

  hat is on the upper end of the bottle

  45. When the user presses the cap 49, the ink bottle 45, the valve box / cylinder assembly 39, the lining 31 and the mouthpiece element 29 are driven down against the upward force given to them by the spiral spring 43. At the start of this downward movement of the cap 49, the outside air is

  introduced into the space below the surface

  of the valve body / piston 42 assembly under the eff-

  fet of suction of this set through the

  clearance 9 ', longitudinal grooves 5, lateral grooves

  the 5 ', of the annular groove 12, of the transverse groove

  dirty 13, the ink duct 16 and the ink outlet orifices 17. When this downward movement of the

  cap 49, the space below the lower surface

  of the valve body / piston assembly 42 increases by

  new in volume to finally communicate with the Spanish

  this interior of the bottle 45 when the outlets

  ink 17 open into the interior of the bottle above the seat 36, so that a portion

  ink from bottle 45 is replaced by air ex-

  thus introduced and flows downward to

  enter the space below the lower surface

  lower of the assembly 42 via the holes 37 for ink passage. At the end of the insertion of the cap 49, the bottle 45, the valve / cylinder box assembly 39, the lining 31 and the mouthpiece element 29 are moved 8. upwards under the effect of force headed in the

  upward direction conferred on them by the spring 43.

  In such an upward movement, when the lower end

  of the ink passage hole 37 is at the same level as the lower surface of the valve body assembly /

  piston 42, the ink being in the space located above

  below this set is transferred to the ink duct

  16 via the ink outlet orifices 17.

  More specifically, when the push-in operation and the operation

  cap release ration 49 are alternately re-

  the ink in bottle 45 is progressively

  replaced by outside air to be introduced into the tip 9 via the ink duct 16 and the ink guide hole 7 of this tip, so

  that the point is moistened with the ink thus introduced.

  As previously described, the upper half

  tip 9 is inserted in part 2 in the form of a man-

  chon of the mouth 4 so that its upper edge 8 is seated in the annular reinforcement 6 of this part, then au'a game is provided between two surfaces, one of them being

  the outer peripheral surface of a portion of the point

  te 9, portion located in part 2, and the other covering the inner peripheral surface of part 2, so that the point 9 is maintained so as to be able to arch inside part 2. It s is a

  characteristic of the present invention.

  According to the present invention, since the tip 9 can be arched inside the part 2 by

  end sleeve shape, the instrument of this invention

  gives an excellent impression of writing while preventing ink from drying out thanks to the cover

  from half the tip 9 through part 2 of the mouthpiece

  re 4. These are excellent features which are inherent in the writing apparatus of this

invention.

  9. The present invention is not limited to the exemplary embodiments which have just been described, it is on the contrary liable to modifications and

  variants which will appear to those skilled in the art.

10.

Claims (1)

  1 - Felt type writing instrument, character-   terized in that: - the upper half of the felt tip (9) of the instrument is inserted for mounting in a sleeve-shaped element (4) so that the upper end (8) of the tip (9) is seated in the upper end (6) of the sleeve-shaped element (4), then   that a clearance (9 ') is formed between two surfaces, one of them   19 them being the outer peripheral surface of a portion of the tip (9), portion located in the element in   sleeve shape (4) and the other being the peripheral surface   inner risk of the sleeve-shaped element (4).