EP0257931A1 - Distributeur pour liquide, en particulier pour distribuer un fluide de correction - Google Patents

Distributeur pour liquide, en particulier pour distribuer un fluide de correction Download PDF

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Publication number
EP0257931A1
EP0257931A1 EP87307185A EP87307185A EP0257931A1 EP 0257931 A1 EP0257931 A1 EP 0257931A1 EP 87307185 A EP87307185 A EP 87307185A EP 87307185 A EP87307185 A EP 87307185A EP 0257931 A1 EP0257931 A1 EP 0257931A1
Authority
EP
European Patent Office
Prior art keywords
barrel
air inlet
fluid
dispenser
outlet
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.)
Withdrawn
Application number
EP87307185A
Other languages
German (de)
English (en)
Inventor
Perveen Shah
Syed Ahmed Javadpur
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GB868619809A external-priority patent/GB8619809D0/en
Priority claimed from GB868625545A external-priority patent/GB8625545D0/en
Application filed by Individual filed Critical Individual
Publication of EP0257931A1 publication Critical patent/EP0257931A1/fr
Withdrawn legal-status Critical Current

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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
    • B43K5/18—Arrangements for feeding the ink to the nibs
    • B43K5/1818—Mechanical feeding means, e.g. valves; Pumps
    • B43K5/1827—Valves
    • B43K5/1836—Valves automatically closing
    • B43K5/1845—Valves automatically closing opened by actuation of the writing point
    • 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
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L19/00—Erasers, rubbers, or erasing devices; Holders therefor
    • B43L19/0018—Erasers, rubbers, or erasing devices; Holders therefor with fluids

Definitions

  • This invention relates to a dispenser implement, particularly although not exclusively, in the form of a writing or marking implement or pen for dispensing correction fluid.
  • a quick drying correction fluid comprising a particulate pigment dispersed in a volatile liquid medium.
  • the requirement with such a pen is that it should be capable of dispensing a carefully regulated flow of fluid when a correction is to be made, yet leakage of fluid should be effectively prevented when the pen is not in use.
  • a relatively narrow nib outlet is provided and air admission to the interior of the barrel to replace dispensed fluid may be controlled or restricted.
  • the nib may be in the form of a capillary tube and a pressurised system may be used whereby prior to dispense a pump mechanism is operated, e.g. by repeatedly pressing a button at the opposite end of the barrel to the nib, to increase the pressure of air within the barrel.
  • a pump mechanism e.g. by repeatedly pressing a button at the opposite end of the barrel to the nib, to increase the pressure of air within the barrel.
  • the wire itself may be a source of problems in that accumulation of dried material may form around the wire and block the capillary.
  • the correction fluid settles out rapidly and it is desirable to accommodate ball bearings within the barrel which act to re-disperse settled material when the pen is shaken.
  • the presence of the wire may make it difficult to accommodate such ball bearings or to allow contact with deposits in the region of the outlet to the nib.
  • the pen can be difficult or inconvenient to manufacture having regard to the requisite high tolerances of the diameters of the wire and the capillary tube bearing in mind that the differences in such diameters may be of the order of 0.05mm.
  • An object of the present invention is to provide a dispenser implement which is simple and convenient to manufacture and with which it is possible to achieve continuous dispense in a satisfactory manner using fluids of a wide range of viscosities.
  • a dispenser implement comprising a barrel providing a reservoir for fluid to be dispensed, a dispense outlet in communication with the reservoir at one end of the barrel. a valve for controlling flow of fluid through said outlet, said valve being normally biased to a closed position, and an openable and closable air inlet in communication with the reservoir, said inlet being openable to permit free admission of air from the atmosphere to the reservoir, and said valve being movable to an open position independently of the opening of said air inlet.
  • the air inlet may be at the opposite end of the barrel to the dispense outlet and a detachable cap or plug member may be provided for opening and closing the inlet.
  • a porous fluid restricting element such as a pad of foam plastics or the like, may be provided across the inlet to restrict or prevent inadvertent outflow of fluid when the inlet is open.
  • the valve comprises an elongate valve member which extends through and externally of the outlet and is axially spring biased to a position at which it engages a valve seat around the outlet thereby to seal same, opening of the valve being effected by pushing the valve member axially inwardly so as to clear the seat, and in particular this opening of the valve may be arranged to occur when the outlet end of the dispenser is pressed onto a surface onto which the fluid is required to be dispensed.
  • the valve member may be a rod which is tapered towards the outer end thereof so that the periphery of the rod is spring urged tightly into engagement with a circular valve seat around the outlet, which valve seat may be appropriately shaped or covered or otherwise formed to give good contact with the valve member.
  • the valve member may be biased to the closed position by means of a spiral spring.
  • the valve member and the spiral spring may be formed integrally e.g. as a moulded plastics part.
  • the dispenser may be in the form of a hand-held pen, and a cap may be provided to fit tightly over the outlet end of the barrel when the pen is not in use.
  • the dispenser may be used for dispensing a correction fluid e.g. consisting of a dispersion of a finely divided pigment in a volatile solvent containing a dissolved coating resin and auxiliary ingredients such as suspension stabilisers and wetting agents may also be included.
  • a correction fluid e.g. consisting of a dispersion of a finely divided pigment in a volatile solvent containing a dissolved coating resin and auxiliary ingredients such as suspension stabilisers and wetting agents may also be included.
  • the dispenser implement shown in Figure 1 is in the form of a hand-held pen and comprises a tubular barrel 1 of circular cross section. At a rear end of th barrel has a dome-shaped end 2 which is closed exept for a small central hole 3. On the inside of the end 2 there are projecting prongs 4 and a disc 5 of porous material such as a dense foam plastics material is held in position on the prongs 4 over the hole 3. On the outside there is a peripheral rim 6 and an integrally formed cap 7 which can be pivoted, about a hinge joint 8, between a closed position as shown in which a central spike 9 engages and seals the hole 3, and an open position at which the hole 3 is freely open to the atmosphere.
  • a hollow tapered end piece 10 which is held in position by interengagement of screw threads 11.
  • the end piece 10 tapers to a narrow outlet opening 12 which is bounded by a circular edge 13.
  • a valve member comprising a conically tapered moulded plastics rod 14 which extends at its smaller diameter end through the opening 12.
  • a moulded plastics spiral spring 15 At its larger diameter end it is formed integrally with one end of a moulded plastics spiral spring 15.
  • the other end of the spring 15 bears against the adjacent end of the barrel 1 and is too wide to enter the barrel.
  • the spring 15 normally urges the rod 14 to a position at which it fits tightly within the circular edge 13 thereby to seal the opening 12.
  • a push-fit cap 16 is provided which fits around the end piece 10 onto the end of the end piece 10 adjacent the barrel 1.
  • the barrel 1 is filled with correcting fluid of a conventional kind comprising a viscous suspension of a pigment in a solution of a resin in a volatile solvent.
  • correcting fluid of a conventional kind comprising a viscous suspension of a pigment in a solution of a resin in a volatile solvent.
  • Two ball bearings 17 are inserted into the barrel 1 and the end piece 10 is screwed into position.
  • the suspension in the barrel 1 is first agitated by shaking the pen. It will be noted that the interior of the barrel 1 is relatively free of crevices and projecting parts whereby the ball bearings 17 can freely move around and readily disturb any deposits of settled pigment.
  • the pen is then turned upright with the rear end uppermost and the cap 7 is opened.
  • the cap 16 is removed and the projecting tip of the rod 14 is pressed onto a surface to which correction fluid is to be dispensed. This causes the rod 14 to move upwardly against the spring 15 whereby fluid flows out of the outlet 12 onto the surface.
  • the arrangement of the cap 7 gives good exposure to the atmosphere when required to facilitate prolonged continuous flow yet this is achieved without use of mechanisms which intrude into the barrel 1.
  • the pad 5 prevents inadvertent loss of fluid e.g. if the pen is shaken with the cap 7 open.
  • the device as shown in Figures 2 + 3 may be provided for the purpose of preventing the inadvertent loss of fluid if the pen is shaken with the cap 7 open.
  • the barrel 1 is provided at the end 2 with three or some other suitable number, of internal ribs 18.
  • the ribs 18 are formed having a lip 19 at their forward ends so as to retain a third ball bearing 20 in the space 21 at the end 2 of the barrel 1.
  • the ball bearing 20 is of the same diameter as the ball bearings 17 so that the number of differing parts of the pen is kept to a mimimum.
  • each rib 18 At the other end of each rib 18 is formed a wedge surface 22 whereby the ball bearing 20 may be held captive in the tapering socket space formed between the three wedge surfaces 22.
  • the spike 9 prevents the ball bearing 20 from being retained by the wedge surfaces 22 so that it may freely move within the space 21 as the pen is shaken, as shown in Figure 2.
  • the cap 7 is left open as shown in Figure 3, then on the commencement of shaking the pen, or if the pen is tilted upside down, the ball bearing 20 will move in space 21 and be engaged and retained by the wedge surfaces 22, thereby closing the hole 3 and preventing leakage of the fluid. Closing the cap 7 will disengage the ball bearing 20 from the wedge surfaces 22.
  • the length of the ribs 18 is such that the movement of the ball bearing 20 is restricted to approximately 1mm, sufficient to agitate the fluid in the barrel 1.
  • the barrel 1 has a hollow tapered end piece 10 secured thereto as a push fit, or by screw threads as in the embodiment of Figure 1.
  • the end piece 10 has a narrow outlet opening 12 bonded by a circular edge 13.
  • a valve member comprising a moulded plastics rod 14 conically tapered towards its ends from a central part having a radial flange 23 therearound.
  • One tip end 24 of the rod 14 fits tightly within the circular edge 13 to seal the opening 12 when the dispenser is not in use.
  • the other end 25 has a soft metal compression spring 26 located thereon, one end of which bears against the flange 23 and the other end of which bears against an annular spring support 27 which is a push fit within the end piece 10.
  • the integrally moulded plastics material spring 15 may not be soft enough to give good application pressure without damage to the surface to which the dispensed fluid is to be applied. However if the spring is too soft proper sealing of the orifice 12 will not occur. In such circumstances the embodiment of Figure 4 as described above may provide a more acceptable working dispenser.
  • FIG. 5 there is shown an alternative embodiment of the "rear" end of dispensing implement, in which any risk of leakage of fluid when the implements as described in relation to Figures 1 to 3 are used, such as might occur when those embodiments are shaken or laid down with the flap inadvertently left open, is reduced even further.
  • the barrel 1 is closed at the end except for a central hole 3 forming a seating for a conical valve member 28, the end of the barrel 1 being concave outwardly.
  • a support ring 29, or separate protrussions if preferred, is formed on the inside of the barrel 1 to restrain movement of a valve base 30, which is formed integrally of moulded plastics material with a spring 31 and the valve member 28.
  • valve member 28 is resiliently biassed into sealing contact with the valve seating hole 3.
  • a deformable cap 32 is retained on the end of the barrel 1 by means of cooperating lips 33, 34 on the cap 32 and barrel 1 respectively, and a central spike 35 depends from the cap 32.
  • the valve member 28 has a central recess 36 which has a diameter large enought to receive the end of the spike 35 therein but is smaller than the diameter of a ball bearing 37 disposed in the sapce 38 beneath the cap 32.
  • the ball bearing 37 will roll to the bottom of the concave end of the barrel 1 and locate itself in the recess 36 in the valve member 28. Depression of the cap 32 causes the spike 35 to contact the ball bearing 37 and the valve member 28 is pushed out of contact with the hole 3, thereby allowing air to enter or pass out of the interior of the barrel 1 depending upon the air pressure therein relative to ambient pressure.
  • the ball bearing 37 will fall to the bottom of the space 38 and depression of the cap 32 will cause the spike 35 to enter the recess 36 but not operate the valve 28, 3. In consequence leakage of dispensing fluid from the implement is prevented whether the implement is in its operating position or not.
  • the pen can be used satisfactorily with fluids of a wide range of viscosities (say giving times of the order of 19 to 35 seconds) and also highly volatile solvents can be used.
  • the pen can be manufactured easily and conveniently.
  • the air inlets 3, shown in Figures 1, 2, 3 and 5 as being located at the opposite end of the dispenser from the outlet 12, may be provided at any other location on the dispenser.
  • the air inlet 3 may be closed by a spring-loaded plunger of the type shown in Figure 4 for the outlet, the plunger being biased by a spring so as to close the inlet 3, and the simple application of thumb pressure to the plunger being used to vent the barrel 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
EP87307185A 1986-08-14 1987-08-14 Distributeur pour liquide, en particulier pour distribuer un fluide de correction Withdrawn EP0257931A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GB8619809 1986-08-14
GB868619809A GB8619809D0 (en) 1986-08-14 1986-08-14 Dispenser implements
GB868620611A GB8620611D0 (en) 1986-08-14 1986-08-26 Dispenser implements
GB8620611 1986-08-26
GB868625545A GB8625545D0 (en) 1986-08-14 1986-10-24 Dispenser implements
GB8625545 1986-10-24

Publications (1)

Publication Number Publication Date
EP0257931A1 true EP0257931A1 (fr) 1988-03-02

Family

ID=27263127

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87307185A Withdrawn EP0257931A1 (fr) 1986-08-14 1987-08-14 Distributeur pour liquide, en particulier pour distribuer un fluide de correction

Country Status (1)

Country Link
EP (1) EP0257931A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8802182U1 (de) * 1988-02-19 1989-06-22 Tipp-Ex GmbH & Co. KG, 65835 Liederbach Flasche zum Ausgeben von flüssigen Stoffen, insbesondere Korrekturflüssigkeit
US5261755A (en) * 1990-05-25 1993-11-16 The Gillette Company Fluid dispenser
EP0730981A1 (fr) * 1995-03-07 1996-09-11 Zebra Co., Ltd. Instrument pour écrire
WO1998021053A1 (fr) * 1996-11-12 1998-05-22 Rotring International Gmbh & Co. Kg Applicateur
EP1004457A1 (fr) * 1998-11-24 2000-05-31 Masaaki Fukami Stylo à bille comprennant une valve d'encre à bille
US7264141B2 (en) 2004-02-19 2007-09-04 Sanford, L.P. Fluid dispenser with passive pressurization

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US748383A (en) * 1902-12-23 1903-12-29 John Everard Langill Marking device.
FR1045469A (fr) * 1950-12-04 1953-11-26 Stylographe à bille
US3680968A (en) * 1970-02-24 1972-08-01 Gilbert Schwartzman Method of correcting typewritten impressions
NL7108297A (fr) * 1971-06-16 1972-12-19
NL7108646A (fr) * 1971-06-23 1972-12-28
FR2203750A1 (fr) * 1972-10-19 1974-05-17 Cherrier Yves
US3832071A (en) * 1973-03-21 1974-08-27 P Chaney Dispenser for error correcting fluids
FR2363299A1 (fr) * 1976-09-02 1978-03-31 Oreal Stylo de maquillage
WO1985004375A1 (fr) * 1984-03-31 1985-10-10 Mazhar Shah Fluide correcteur et applicateur

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US748383A (en) * 1902-12-23 1903-12-29 John Everard Langill Marking device.
FR1045469A (fr) * 1950-12-04 1953-11-26 Stylographe à bille
US3680968A (en) * 1970-02-24 1972-08-01 Gilbert Schwartzman Method of correcting typewritten impressions
NL7108297A (fr) * 1971-06-16 1972-12-19
NL7108646A (fr) * 1971-06-23 1972-12-28
FR2203750A1 (fr) * 1972-10-19 1974-05-17 Cherrier Yves
US3832071A (en) * 1973-03-21 1974-08-27 P Chaney Dispenser for error correcting fluids
FR2363299A1 (fr) * 1976-09-02 1978-03-31 Oreal Stylo de maquillage
WO1985004375A1 (fr) * 1984-03-31 1985-10-10 Mazhar Shah Fluide correcteur et applicateur

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8802182U1 (de) * 1988-02-19 1989-06-22 Tipp-Ex GmbH & Co. KG, 65835 Liederbach Flasche zum Ausgeben von flüssigen Stoffen, insbesondere Korrekturflüssigkeit
US5261755A (en) * 1990-05-25 1993-11-16 The Gillette Company Fluid dispenser
EP0730981A1 (fr) * 1995-03-07 1996-09-11 Zebra Co., Ltd. Instrument pour écrire
US5846012A (en) * 1995-03-07 1998-12-08 Zebra Co. Ltd. Writing tool
WO1998021053A1 (fr) * 1996-11-12 1998-05-22 Rotring International Gmbh & Co. Kg Applicateur
EP1004457A1 (fr) * 1998-11-24 2000-05-31 Masaaki Fukami Stylo à bille comprennant une valve d'encre à bille
US7264141B2 (en) 2004-02-19 2007-09-04 Sanford, L.P. Fluid dispenser with passive pressurization

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