EP0498930A1 - Instrument d'écriture composite - Google Patents

Instrument d'écriture composite Download PDF

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Publication number
EP0498930A1
EP0498930A1 EP91118632A EP91118632A EP0498930A1 EP 0498930 A1 EP0498930 A1 EP 0498930A1 EP 91118632 A EP91118632 A EP 91118632A EP 91118632 A EP91118632 A EP 91118632A EP 0498930 A1 EP0498930 A1 EP 0498930A1
Authority
EP
European Patent Office
Prior art keywords
cap
holder
reservoirs
anchor
writing utensil
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Withdrawn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
EP91118632A
Other languages
German (de)
English (en)
Inventor
Shuhei Kageyama
Saburo Kobayashi
Yoshihide Mitsuya
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.)
Kotobuki and Co Ltd
Original Assignee
Kotobuki and Co Ltd
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 JP353891U external-priority patent/JPH0494696U/ja
Priority claimed from JP050590U external-priority patent/JPH052992U/ja
Application filed by Kotobuki and Co Ltd filed Critical Kotobuki and Co Ltd
Publication of EP0498930A1 publication Critical patent/EP0498930A1/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Withdrawn legal-status Critical Current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
    • B43K24/00—Mechanisms for selecting, projecting, retracting or locking writing units
    • B43K24/10—Mechanisms for selecting, projecting, retracting or locking writing units for selecting, projecting and locking several writing units
    • B43K24/14—Mechanisms for selecting, projecting, retracting or locking writing units for selecting, projecting and locking several writing units operated by turning means
    • B43K24/146—Mechanisms for selecting, projecting, retracting or locking writing units for selecting, projecting and locking several writing units operated by turning means with cam control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K27/00—Multiple-point writing implements, e.g. multicolour; Combinations of writing implements
    • B43K27/003—Multiple-point writing implements, e.g. multicolour; Combinations of writing implements only one holder being used either for the pencil or the pen
    • 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

Definitions

  • the present invention relates to a combined writing utensil. More particularly, it concerns a combined writing utensil which can have any point of a plurality of writing reservoirs of same type or different types and of same color or different colors successively extended from the opening of a casing by turning a cap in one or the other direction until it is put to a stopper.
  • An upper shaft case can be turned either right or left around a shaft.
  • One mechanical pencil element and two ball-point pen elements are alternately shifted to a writing position. If the mechanical pencil element is set in a writing position, the upper shaft casing can move in an axial direction a certain distance relative to the lower shaft casing to extend the lead out. If the ball point pen element is set in a writing position, the upper shaft casing is prevented from moving in an axial direction.
  • the prior combined writing utensil described above has the disadvantage that only mechanical pencil can be moved by knocking, it is not possible to select a desired set positions for both the mechanical pencil element and ball-point pen elements. It also has the disadvantage that the mechanical pencil element and the two ball-point pen elements are each connected with a rod through a connection sleeve. The mechanical pencil and ball-point elements use different sliders for the respective rods. These result in a large number of parts, complicated structure, and thus high fabrication cost.
  • any of a plurality of writing reservoirs can be moved by a knocking action irrespective of their set position and can be set at desired positions.
  • a combined writing utensil which by referring to the accompanying drawings, comprises in combination: a holder 1 having a plurality of through holes 2.
  • a plurality of guide grooves 3 communicate with respective through holes 2.
  • a plurality of writing reservoirs 4 are inserted in respective guide grooves in holder 1.
  • a plurality of sliders 7 identical in structure are provided for each respective writing reservoirs, each resorvior having an axial air hole and an outside hole communicated with it and a plurality of front stops 6.
  • a plurality of resilient means 8 are provided between respective guide grooves and respective front stops 6; a casing 9 mounted on the holder for covering the reservoirs; a cap 10; and a cam 14 provided inside the cap having inclined edges 11 and 13 provided on an inside thereof to allow the sliders to alternately slide against or by the force of resilient means 8 to extend a selected point of the reservoirs out of the opening in the end casing 9, and having retainer 12 to hold the selected reservoir point.
  • the combined writing utensil of the present invention further comprises in combination: a rotation stop provided on holder 1; and a convex ridge provided inside the cap for limiting rotation of the cap to any side of the rotation stop.
  • the combined writing utensil of the present invention is characterized by a turning stop provided in a rear portion of one of partitions for the guide grooves of holder 1.
  • ink reservoir 4a and slider 7b can move forward along through hole 2a and guide groove 3a against resilient spring 8a as slidably advanced by inclined edge 11 of cam 11 provided inside cap 10.
  • Slider 7a is retained on retainer 12.
  • Point 4a1 of ink reservoir 4a projects out of opening 9a of casing 9. This allows writing. If convex abutment 16 (Fig 3) of cap 10 does not abut rotation stop 15 of holder 1, cap 10 can continue to turn further clockwise.
  • Slider 7a is detached from retainer 12.
  • Ink reservoir 4a and slider 7a can be move backward along with the inclined edge 13 by the force of resilient spring 8a.
  • Point 4a1 of ink reservoir 4a can retract into opening 9a of casing 9.
  • points 4a1, 4b1, and so forth of reservoirs 4a, 4b, and so forth are alternately extended and retracted from opening 9a of casing 9. Writing can be done with an extended point.
  • lead can be extended by knocking on cap 10 to write as with the prior one. Even the ball-point pen ink reservoirs knocking can be done as with the mechanical pencil lead reservoir. But, as knocking is not needed, knocking capability is not made for it. If an additional mechanical pencil lead reservoir replaces any of the ball-point pen ink reservoirs, the knocking capability can be made operational.
  • casing 9 In order to supply lead or to replace a ball-point pen ink reservoir, casing 9 should be removed from holder 1, or cap 10 should be pulled off to remove the reservoirs out of their sliders. A reservoir should be pulled out backward together with its spring and slider. Lead should be supplied to the mechanical pencil lead reservoir. The lead reservoir then should pass through the through hole of holder 1 together with the resilient member and the slider. For any ink reservoir, the ink reservoir should be pulled out of the slider. The ink reservoir filled with ink is replaced by passing it from the through hole of holder 1 through the resilient member to engage the slider. Instead, an ink reservoir filled with ink should be inserted forward together with the resilient member and slider into the guide groove and through hole.
  • FIGs, 1 and 2 show holder 1 having a plurality of, say three, through holes 2a to 2c and guide grooves 3a to 3c communicating therethrough arranged to form an equilateral triangle. Inserted in through holes 2a to 2c and guide grooves 3a to 3c communicating therethrough the rear portions of a plurality of, three in this embodiment, are writing reservoirs, including two ball-point pen ink reservoirs 4a and 4c (refills) of different colors, such as blue and red, and one mechanical pencil lead reservoir 4b.
  • writing reservoirs including two ball-point pen ink reservoirs 4a and 4c (refills) of different colors, such as blue and red, and one mechanical pencil lead reservoir 4b.
  • Sliders 7a to 7c are provided for the rear portions of reservoirs 4a to 4c which can move axially in respective guide grooves 3a to 3c against or by the force of springs 8a to 8c provided between sliders 7a to 7c and front stops 6a to 6c of guide grooves 3a to 3c.
  • Holder 1 also has casing 9 screwed thereto which covers the front portions of reservoirs 4a to 4c.
  • Holder 1 further has cap 10 screwed on the rear outside thereof in one or the other direction until it abuts rotation stop 15.
  • sliders 7a to 7c as shown in Fig. 2, has air hole 29a provided in the axial direction and an outside hole 29b communicating therewith.
  • Slider 7b provided on the rear portion of lead reservoir 4b needs no air hole and the outside hole.
  • sliders 7a and 7c for ball-point pen ink reservoirs 4a and 4c it is made identical in construction as sliders 7a and 7c for ball-point pen ink reservoirs 4a and 4c in order to reduce the number of different parts and to allow changing the setting position of reservoirs 4a to 4c.
  • the number of parts can be reduced, and the construction can be made simple, resulting in substantially reduced production cost.
  • rotation stop 15 is provided in one partition of guide groove 3a to 3c for holder 1.
  • rotation stop 15 may be provided in a rear portion of one partition of guide grooves 3a to 3c for holder 1.
  • Rotation stop 15 can abut convex abutment 16 provided on the inside of cap 10, as shown in Fig. 3, to keep cap 10 from turning.
  • Cap 10 is permitted to turn in one or the other direction toward the front end until the convex abutment 16 meets rotation stop 15.
  • Cap 10 has a bamboo-shoot-like cam 14 on its inside surface.
  • the bamboo-shoot-like cam 14 has inclined edges 11 and 13 which allow any of points 4a1 to 4c1 of reservoirs 4a to 4c to be selectively extended or retracted from the end opening 9a of casing 9 as sliders 7a to 7c alternately slide against or by the force of springs 8a to 8c.
  • bamboo-shoot -like cam 14 also has retainer 12 for holding any of the selected points 4a1 to 4c1 of reservoirs 4a to 4c extended from opening 9a.
  • Holder 1 has on a rear end thereof an anchor-like end 21 having a slit 20.
  • Cap 10 has on the inside thereof retaining hole 22 for mating with anchor-like end 21.
  • eraser rest 23 is demountably inserted inside the rear portion of cap 10. Deflection preventing member 17 of eraser rest 23 fits in the center of anchor-like end 21. Eraser rest 23 is positioned in a jig hole 24 at the end of cap 10. A jig inserted into jig hole 24 is used to release the anchor-like end 21 from retainer 22 of cap 10. Alternatively, the eraser rest may be screwed onto cap 10.
  • Deflection preventing member 17 may be made by a poured and hardening filler, for example, a bonding agent, into the center of the anchor-like end 21, or may be formed on the eraser rest itself.
  • clip 25 the base of which fits in a receiving hole 28 provided on a rear portion of cap 10, an eraser 26 inserted in eraser rest 23, and eraser cover 27 fitted on eraser rest 23.
  • cap 10 can turn in one direction, or more specifically clockwise with reference to casing 9 when convex abutment 16 of cap 10 is not abutting rotation stop 15 of holder 1, or when all of points 4a1 to 4c1 of reservoirs 4a to 4c are retracted. Turning cap 10 is not prevented.
  • Blue ball point pen ink reservoir 4a and slider 7a for it can be moved forward against spring 8a along with through hole 2a and guide groove 3a as advanced by inclined edge 11 of bamboo-shoot-like cam 14 provided inside cap 10. Slider 7a is retained by retainer 12 of cam 14. Point 4a1 of ink reservoir 4a projects out of opening 9a of casing 9 (see Fig. 2). This allows writing in blue. In this operation, point 4c1 of lead reservoir 4c and slider 7c for it are moved backward along with inclined edge 13 by the force of spring 8c.
  • cap 10 If cap 10 is turned further, more clockwise, the next mechanical pencil ink reservoir 4b and slider 7b for it are moved forward along with through hole 2b and guide groove 3b against the force of spring 8b as advanced by inclined edge 11 of cam 14 provided inside cap 10. Slider 7b is retained on retainer 12 of cam 14. Point 4b1 of ink reservoir 4b projects out of opening 9a of casing 9 (see Fig. 2). If cap 10 is knocked,core lead is driven out to a predetermined length for writing as in a conventional mechanical pencil. In this operation, convex abutment 16 of cap 10 abuts rotation stop 15 of holder 1, which limits clockwise turning.
  • cap 10 In order to retract point 4b1 of mechanical pencil ink reservoir 4b, cap 10 is turned counterclockwise. Then, slider 7b is released from retainer 12 of cam 14. Ink reservoir 4b and slider 7b for it moves backward along with inclined edge 11 of cam 14 by the force of spring 8b. Point 4b1 of ink reservoir 4b is withgrawn into opening 9a of casing 9 along with inclined edge 11 by the force of spring 8b.
  • slider 7a can be released from retainer 12 of cam 14. Ink reservoir 4a and slider 7a for it moves backward along with inclined edge 11 of cam 14 by the force of spring 8a. Point 4a1 of ink reservoir 4a is withdrawn from opening 9a of casing 9 along with inclined edge 11 by the force of spring 8a.
  • cap 10 If cap 10 is turned still further counterclockwise, red ink reservoir 4c and slider 7c for it move forward along with through hole 2c and guide groove 3c against the force of spring 8c as advanced by inclined edge 13 of cam 14. Slider 7c is held by retainer 12 of cam 14. Point 4c1 of the ink reservoir 4c projects out of opening 9a of casing 9. This allows writing in red. In this operation, the convex abutment 16 of cap 10 abuts rotation stop 15 of holder 1, which limits counterclockwise turning.
  • points 4a1 to 4c1 of reservoirs 4a to 4c can be alternately extended from opening 9a of casing 9 as advanced by inclined edges 11 or 13 of bamboo-shoot-like cam 14 when cap 10 is turned clockwise or counterclockwise until convex abutment 16 meets rotation stop 15.
  • Retainer 12 at the end of cam 14 can hold any of points extended, allowing writing with it.
  • any of points 4a1 to 4c1 of reservoirs 4a to 4c can be withdrawn as these can be moved by inclined edges 11 or 13 by the respective force of springs 8a to 8c.
  • knocking can still be achieved as in the case of the mechanical pencil. As no knocking is needed for the ball-point pen ink reservoirs, the knocking capability is not operational for them. If an additional mechanical pencil reservoir is provided in place of any of the ball-point pen ink reservoirs, the knocking capability can be made operational. This means that any desired combination of mechanical pencil and ball-point pens can be set up.
  • cap 10 In order to supply lead or to replace a ball-point pen ink reservoir 4a or 4c, cap 10 should be turned strongly counterclockwise relative to casing 9. This turns cap 10 and holder 1 together to unscrew and remove casing 9 from holder 1. Reservoirs 4a, 4b, and 4c can be pulled out of sliders 7a to 7c. For the mechanical pencil; lead should be supplied to the mechanical pencil lead reservoir 4b. Lead reservoir 4b then should be passed from through hole 2b of holder 1 through spring 8b to mate with slider 7b. For any of ink reservoirs, the ink reservoir 4a or 4c should be pulled out of slider 7a or 7c.
  • Ink reservoirs 4a or 4c filled with ink may be replaced by passing then from through hole 2a or 2c of holder 1 through spring 8a or 8c to mate with slider 7a or 7c. This completes supplying load or replacing ink reservoirs 4a or 4c.
  • supplying lead or replacing ink reservoir 4a or 4c can be made in the following way. Eraser cover 27 and eraser rest 23 should be removed. Cap 10 may be pulled out of holder 1 having casing 9 screwed thereto. Reservoirs 4a, 4b, or 4c may be pulled out backward together with springs 8a, 8b, or 8c and slider 7a, 7b, or 7c. Slider 7b should be removed. Lead should be supplied to lead reservoir 4b. Slider 7b should mate with lead reservoir 4b. This assembly may be inserted through guide groove 3b of holder 1 into through hole 2b. Or, used ink reservoirs 4a or 4c should be pulled out of slider 7a or 7c. Springs 8a or 8c should be removed. Instead, reservoir 4a or 4c filled with ink may be inserted forward together with respective springs 8a or 8c and sliders 7a or 7c into guide grooves 3a or 3c and through holes 2a or 2c.
  • Fig. 5 is an exploded perspective view illustrating a construction of a second embodiment according to the present invention for a combined writing utensil.
  • Fig. 6 is a longitudinal cross-sectioned view of the assembled utensil.
  • rotation stop 15a is provided in a rear portion of one of the partitions for guide grooves 3a, 3b, 3c of holder 1; and convex abutment 16a is provided inside cap 10 for limiting rotation of cap 10 abutting the rear side of rotation stop 15a.
  • An advantage of the present invention is as follows. In such an alternative way for supplying lead or replacing an ink reservoir, eraser cover 27 and eraser rest 23 should be removed, an jig is inserted into jig hole 24 to engage the anchor like end 21 by pressing to bend anchor-like ends 21 inward by contacting slit 20 to release ends 21 from retainer 22 of cap 10, then cap 10 can be easily removed. This can be done without forcibly withdrawing cap 10. If failure is caused in any of sliders 7a to 7c on fabrication, then cap 10 can be pulled out to expose it for trouble shooting.
  • Another advantage of the present invention is as follows. Although springs 8a to 8c are abutting respective front stoppers 6a to 6c, reservoirs 4a to 4c are not abutting front stops 6a to 6c, but pass through respective holes 2a to 2c. Therefore any of reservoirs 4a to 4c can be knocked irrespective of their set positions. This allows any desired selection of set positions for reservoirs 4a to 4c so that the reservoir used most frequently can be set at the most convenient position. For mechanical pencil lead reservoir 4b, the lead can be made longer as no retaining members, such as a connection sleeve and rod, are used. For ball -point pen ink reservoirs 4a and 4c, the quantity of ink to fill them can be increased, resulting in longer service life.
  • An additional advantage of the present invention is that the number of parts and number of different parts can be reduced so that the whole product can be fabricated in a simple construction at the lowest cost. This is due to the identical structure of sliders 7a to 7c having axial air hole 29a and outside hole 29b communicating with them irrespective of the kind of reservoir and to the use of no of retaining members, such as connection sleeves and rods, for reservoirs 4a to 4c.
  • a further additional advantage of the present invention is that as rotation stop 15 and convex ridge 16 can stop rotation of cap 10, it is ready to select a desired reservoir by turning cap 10, particularly in for quick selection of a frequently used reservoir.

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  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
EP91118632A 1991-01-09 1991-10-31 Instrument d'écriture composite Withdrawn EP0498930A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP353891U JPH0494696U (fr) 1991-01-09 1991-01-09
JP3538/91 1991-01-09
JP50590/91 1991-07-01
JP050590U JPH052992U (ja) 1991-07-01 1991-07-01 複合筆記具

Publications (1)

Publication Number Publication Date
EP0498930A1 true EP0498930A1 (fr) 1992-08-19

Family

ID=26337142

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91118632A Withdrawn EP0498930A1 (fr) 1991-01-09 1991-10-31 Instrument d'écriture composite

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EP (1) EP0498930A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2738187A1 (fr) * 1995-08-28 1997-03-07 Mitsubishi Pencil Co Instrument a ecrire a fonctions multiples
EP1600304A2 (fr) * 2004-05-25 2005-11-30 Kotobuki & Co. Ltd. Instrument d'écriture composite

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1002930A (fr) * 1946-11-04 1952-03-12 Jif Instrument graphique
DE1947777A1 (de) * 1968-10-31 1970-05-06 Parker Pen Co Schreibgeraet mit vor- und zurueckziehbarer Patrone und einer Radiergummianordnung
FR2551000A1 (fr) * 1983-08-30 1985-03-01 Parker Pen Co Procede de fixation d'une agrafe de pochette et de fermeture de l'extremite arriere ouverte du fut d'un instrument d'ecriture
EP0257883A1 (fr) * 1986-08-07 1988-03-02 KOTOBUKI & CO., LTD. Instrument d'écriture avec deux mines
EP0322550A1 (fr) * 1987-12-24 1989-07-05 Ludwig Schleif Stylo à bille à deux cartouches

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1002930A (fr) * 1946-11-04 1952-03-12 Jif Instrument graphique
DE1947777A1 (de) * 1968-10-31 1970-05-06 Parker Pen Co Schreibgeraet mit vor- und zurueckziehbarer Patrone und einer Radiergummianordnung
FR2551000A1 (fr) * 1983-08-30 1985-03-01 Parker Pen Co Procede de fixation d'une agrafe de pochette et de fermeture de l'extremite arriere ouverte du fut d'un instrument d'ecriture
EP0257883A1 (fr) * 1986-08-07 1988-03-02 KOTOBUKI & CO., LTD. Instrument d'écriture avec deux mines
EP0322550A1 (fr) * 1987-12-24 1989-07-05 Ludwig Schleif Stylo à bille à deux cartouches

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2738187A1 (fr) * 1995-08-28 1997-03-07 Mitsubishi Pencil Co Instrument a ecrire a fonctions multiples
EP1600304A2 (fr) * 2004-05-25 2005-11-30 Kotobuki & Co. Ltd. Instrument d'écriture composite
EP1600304A3 (fr) * 2004-05-25 2007-06-27 Kotobuki & Co. Ltd. Instrument d'écriture composite
CN100471695C (zh) * 2004-05-25 2009-03-25 株式会社寿 复合书写用具

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