EP3209505A1 - Membrane de compensation de difference de pression - Google Patents
Membrane de compensation de difference de pressionInfo
- Publication number
- EP3209505A1 EP3209505A1 EP15791707.1A EP15791707A EP3209505A1 EP 3209505 A1 EP3209505 A1 EP 3209505A1 EP 15791707 A EP15791707 A EP 15791707A EP 3209505 A1 EP3209505 A1 EP 3209505A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- membrane
- reservoir
- pen
- compensation
- porous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 153
- 230000002209 hydrophobic effect Effects 0.000 claims description 46
- 239000007788 liquid Substances 0.000 claims description 8
- 230000005489 elastic deformation Effects 0.000 claims description 7
- 230000001747 exhibiting effect Effects 0.000 abstract 2
- 230000006870 function Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000006355 external stress Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K5/00—Pens with ink reservoirs in holders, e.g. fountain-pens
- B43K5/02—Ink reservoirs
- B43K5/04—Ink reservoirs flexible
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K7/00—Ball-point pens
- B43K7/02—Ink reservoirs; Ink cartridges
- B43K7/08—Preventing leakage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K8/00—Pens with writing-points other than nibs or balls
- B43K8/02—Pens with writing-points other than nibs or balls with writing-points comprising fibres, felt, or similar porous or capillary material
- B43K8/03—Ink reservoirs; Ink cartridges
Definitions
- the invention relates to a pressure difference compensation membrane between the outside and the inside of a pen-free ink tank or the like, and to a free-ink pen equipped with such a membrane.
- a pen still free reservoir is a pen in which the ink is free to circulate within the chamber defined by the tank.
- the invention relates to pressure difference compensation between the enclosure of such a tank and the outside.
- Free ink pens are known having an ink reservoir connected to a writing tip.
- baffle device also called baffle or labyrinth device, in English "baffle" to regulate the pressure in the tank.
- the baffle device can gorge or empty ink so as to adapt the pressure inside the reservoir relative to the external pressure, as well as the ink consumption that during accidental variations of the pressure while supplying ink to the writing tip.
- the first part Under the effect of a pressure difference on either side of the compensation diaphragm, the first part is deformed and the second part is possibly deformed. Since the first stiffness of the first portion is less than the second stiffness of the second portion, the first portion deforms first or more than the second portion for small pressure differences. From a certain predetermined pressure difference on either side of the compensation membrane, the second part deforms in the same way as the first part. The deformations continue as follows depending on the number of parts of the compensation membrane, as the pressure difference continues to increase.
- the compensation membrane When the compensation membrane is mounted on a tank, the deformation of the compensation membrane thus makes it possible to compensate for the pressure difference between the inside and the outside of the tank.
- the compensating membrane In order to be able to compensate for this pressure difference, the compensating membrane is of course impermeable, in particular airtight and impervious to the fluid contained in the reservoir (ink or equivalent).
- the first part and the second part of the compensation membrane because of their different rigidities, are solicited by threshold according to the pressure difference. The presence of two parts of different stiffness allows a progressive response of the compensation membrane to adapt to variations in pressure difference.
- the non-linearity of the deformation of the compensation diaphragm as a function of the pressure difference on either side of the said diaphragm ensures optimal tank operation, without the risk of leakage or stopping of writing, in all overpressure or vacuum regimes inside the tank.
- the slow variation of pressure due to the consumption of the ink during the current use of the pen generates a small difference in instantaneous pressure which is mainly absorbed by the deformations of the first part, while the extreme pressure variations due to accidental depressions or overpressures (heat, altitude, shocks, etc.) generating a large difference in instantaneous pressure are absorbed mainly by the deformations of the second part.
- Such a compensation membrane therefore allows, by being used alone or possibly with other additional devices, a satisfactory management of the pressure and the prevention of leaks.
- a pen comprising a free ink tank equipped with such a compensation membrane allows the compensation of the main pressure variations due to the consumption of the ink and the external conditions, without deforming under the weight of the ink or create stress on the ink. This ensures a satisfactory use of the pen.
- the compensation membrane furthermore constitutes a structural part which is easy to manufacture and inexpensive with respect to the known pressure difference compensation devices.
- the portions are concentric.
- the compensation diaphragm deforms into easily-predictable shapes, which makes it possible to better anticipate the behavior of the compensation diaphragm relative to the other components of the pen and to increase its reliability.
- the compensation membrane comprises a flyweight.
- a flyweight has the effect of adding inertia to the compensation membrane, which prevents it from responding too violently to a very fast solicitation.
- the flyweight acts as a low-pass filter in the sense that it limits the response of the membrane to the rapid oscillations of the pressure difference. This limits the risk of tearing or damage to the compensation membrane.
- the compensation membrane is configured to be substantially indeformable under the effect of its own weight. It is considered that the compensation membrane is substantially indeformable when its deformation under its own weight is zero or negligible in front of its maximum elastic deformation.
- the greatest deformation, in particular of the first part, under its own weight is at least ten times, even at least a hundred times, or even at least a thousand times less than its deformation. maximum elasticity. The largest deformation of a part is measured as the displacement of the material point of this part that moves the most. The maximum elastic deformation is the last elastic deformation achievable by the material before plasticizing at least a portion of the compensation membrane.
- the compensation membrane is substantially indeformable under the effect of the weight of the ink.
- the deformation of the compensation membrane under the weight of the ink may be negligible in view of its maximum elastic deformation.
- the largest deformation of the first part under the weight of the ink is at least ten times, even at least a hundred times, even at least a thousand times less than its maximum elastic deformation.
- the weight of the ink is understood in the maximum state of filling of the reservoir; it goes without saying that then, the membrane does not deform either for a less filling of the tank.
- the liquid impermeable and gas permeable membrane and the baffle device or the porous and hydrophobic portion plug the second opening, said membrane being adjacent to the baffle device or the porous and hydrophobic portion, the baffle or the porous and hydrophobic portion being disposed (e) on the inner side of the reservoir relative to said membrane. Therefore, at the second opening, the breathable membrane is in contact with the outside of the tank and the baffle device or the porous and hydrophobic portion is in contact with the interior of the tank.
- the breathable membrane seals the reservoir vis-à-vis the ink while allowing the gas, especially air, while the baffle device and / or the porous and hydrophobic portion protects the breathable membrane which could get dirty and lose its air permeability if it was in direct and frequent contact with the ink.
- the simultaneous arrangement of a breathable membrane and a baffle device or a porous and hydrophobic part allows, by synergy, to protect and preserve the functions of each of these components.
- the first axial end is on the opposite side to a writing tip relative to the second axial end.
- the writing tip, the second axial end and the first axial end are arranged in this order along the pen, the first axial end of the reservoir being provided with the compensation membrane.
- the compensation membrane can thus move freely without being likely to be impeded or to hinder the writing function of the pen and, on the contrary, accommodate the size of the tank to always allow an ink flow.
- the pen 10 comprises a compensation membrane 20, a porous and hydrophobic portion 30 and a breathable membrane 40.
- the compensation membrane 20 blocks a first opening of the reservoir 14 disposed in the vicinity of a first axial end 14a.
- the first axial end 14a is the end of the reservoir 14 opposite to the writing tip 16. The structure and operation of the compensation membrane 20 will be described later.
- the compensation membrane 20 has an actuation threshold. In other words, it is intended to deform only from a predetermined pressure difference between the interior and the exterior of the tank 14. This allows the tank 14 to be in slight depression.
- the porous and hydrophobic portion 30 absorbs a portion of the ink, which creates a slight depression in the reservoir 14. This depression, light enough not to be offset by a movement of the compensation membrane 20, makes it possible to compensate for the weight of the ink on the writing tip 16, and thus to prevent the ink from dripping by the writing tip 16.
- the membrane breathable 40 prevents the reservoir 14 from leaking in case the porous and hydrophobic portion 30 is completely full of ink.
- the compensation membrane 20 also comprises a feeder 28.
- the weight is annular and symmetrical in revolution, so as not to disturb the general symmetry of the compensation membrane 20.
- the weight 28 is disposed between the first part 22 and the second part 24.
- the flyweight 28 increases the inertia of the compensation membrane 20.
- the difference Pi-Po increases.
- the compensation membrane begins to deform.
- the first part 22, which has the lowest rigidity K1 begins to deform outwardly of the tank 14 to increase the volume of the tank 14 and thus reduce the internal pressure Pi.
- the second and third portions 24, 26, of respective stiffnesses K2, K3 higher than the first stiffness K1 retain substantially their original shape. This step defines a first regime, in which the variations of the pressure difference are accommodated mainly by the deformation of the first part 22.
- the respective stiffnesses K1, K2, K3 of the portions 22, 24, 26 are preferably dimensioned so that the deformations of the compensation membrane 20 remain in the elastic range of the portions 22, 24, 26.
- the compensation membrane 20 may be termed a shape memory membrane.
- the membrane is therefore configured to stay or return to its position rest in the absence of external stress, this position being unique.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pens And Brushes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1460229A FR3027556B1 (fr) | 2014-10-24 | 2014-10-24 | Membrane de compensation de difference de pression |
PCT/FR2015/052836 WO2016062972A1 (fr) | 2014-10-24 | 2015-10-22 | Membrane de compensation de difference de pression |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3209505A1 true EP3209505A1 (fr) | 2017-08-30 |
EP3209505B1 EP3209505B1 (fr) | 2021-05-05 |
Family
ID=52102892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15791707.1A Active EP3209505B1 (fr) | 2014-10-24 | 2015-10-22 | Membrane de compensation de difference de pression |
Country Status (6)
Country | Link |
---|---|
US (2) | US10518572B2 (fr) |
EP (1) | EP3209505B1 (fr) |
JP (1) | JP6629316B2 (fr) |
CA (1) | CA2965270A1 (fr) |
FR (1) | FR3027556B1 (fr) |
WO (1) | WO2016062972A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI641506B (zh) * | 2017-11-10 | 2018-11-21 | 順德工業股份有限公司 | 書寫具的壓力調整裝置及具有該壓力調整裝置的書寫具 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB645705A (en) | 1947-09-09 | 1950-11-08 | Cia Uruguaya De Fomento Ind S | Improvements in reservoir writing instruments |
FR1047934A (fr) | 1950-08-03 | 1953-12-17 | Stylographe à bille | |
FR1326415A (fr) * | 1961-03-06 | 1963-05-10 | Stylographe | |
US3168889A (en) | 1961-03-06 | 1965-02-09 | George A Rubissow | Fountain pen |
US3854826A (en) | 1973-12-26 | 1974-12-17 | Artex Hobby | Fluid applicator pressure control device |
FR2398702A1 (fr) * | 1977-07-28 | 1979-02-23 | Saint Gobain | Preparation de fibres de verre pour preimpregnes smc |
US4472462A (en) * | 1981-04-21 | 1984-09-18 | Mark-Tex Corporation | Paint applying method using marking device |
DE3910787C1 (fr) * | 1989-04-04 | 1990-09-27 | Rotring-Werke Riepe Kg, 2000 Hamburg, De | |
US5749665A (en) * | 1993-11-30 | 1998-05-12 | Pentel Kabushiki Kaisha | Knock-type liquid applicator |
JP3312211B2 (ja) | 1994-01-31 | 2002-08-05 | ぺんてる株式会社 | 塗布具 |
JP3198778B2 (ja) | 1994-01-31 | 2001-08-13 | ぺんてる株式会社 | 筆記具 |
US5738459A (en) * | 1995-05-08 | 1998-04-14 | Eversharp Pen Company | "Pressurized refill with multiple seal valve core plug and a method for pressurizing a refill" |
JP3632289B2 (ja) | 1996-03-29 | 2005-03-23 | ぺんてる株式会社 | インキタンク |
US6102601A (en) * | 1999-03-30 | 2000-08-15 | Pro Eton Corporation | Ink chamber pressure enhancing control |
EP1171316B1 (fr) * | 1999-04-17 | 2002-10-16 | Faber- Castell AG | Applicateur |
JP2001080270A (ja) | 1999-09-14 | 2001-03-27 | Sakura Color Prod Corp | 塗布具 |
JP2001158869A (ja) | 1999-09-20 | 2001-06-12 | Sakura Color Prod Corp | 筆記具用油性インキ |
JP3643299B2 (ja) | 2000-06-12 | 2005-04-27 | セーラー万年筆株式会社 | 塗布具 |
US7044675B2 (en) | 2002-12-10 | 2006-05-16 | Bic Corporation | Leak resistant writing instrument |
-
2014
- 2014-10-24 FR FR1460229A patent/FR3027556B1/fr not_active Expired - Fee Related
-
2015
- 2015-10-22 WO PCT/FR2015/052836 patent/WO2016062972A1/fr active Application Filing
- 2015-10-22 EP EP15791707.1A patent/EP3209505B1/fr active Active
- 2015-10-22 JP JP2017522179A patent/JP6629316B2/ja not_active Expired - Fee Related
- 2015-10-22 US US15/521,372 patent/US10518572B2/en not_active Expired - Fee Related
- 2015-10-22 CA CA2965270A patent/CA2965270A1/fr not_active Abandoned
-
2019
- 2019-11-26 US US16/695,413 patent/US10994568B2/en active Active
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2016062972A1 * |
Also Published As
Publication number | Publication date |
---|---|
US10994568B2 (en) | 2021-05-04 |
FR3027556B1 (fr) | 2016-11-25 |
US20200094609A1 (en) | 2020-03-26 |
US10518572B2 (en) | 2019-12-31 |
EP3209505B1 (fr) | 2021-05-05 |
JP2017531583A (ja) | 2017-10-26 |
JP6629316B2 (ja) | 2020-01-15 |
WO2016062972A1 (fr) | 2016-04-28 |
CA2965270A1 (fr) | 2016-04-28 |
US20190152253A1 (en) | 2019-05-23 |
FR3027556A1 (fr) | 2016-04-29 |
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