EP0305872B1 - Feinminenstift o. dgl. - Google Patents

Feinminenstift o. dgl. Download PDF

Info

Publication number
EP0305872B1
EP0305872B1 EP88113757A EP88113757A EP0305872B1 EP 0305872 B1 EP0305872 B1 EP 0305872B1 EP 88113757 A EP88113757 A EP 88113757A EP 88113757 A EP88113757 A EP 88113757A EP 0305872 B1 EP0305872 B1 EP 0305872B1
Authority
EP
European Patent Office
Prior art keywords
actuating device
basic body
protuberance
lead
eraser
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.)
Expired - Lifetime
Application number
EP88113757A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0305872A1 (de
Inventor
Munro Hugh Nicolas John Baird
Dietmar Schaub
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.)
NESTLER GRAPHICS GmbH
Original Assignee
NESTLER GRAPHICS GmbH
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
Application filed by NESTLER GRAPHICS GmbH filed Critical NESTLER GRAPHICS GmbH
Publication of EP0305872A1 publication Critical patent/EP0305872A1/de
Application granted granted Critical
Publication of EP0305872B1 publication Critical patent/EP0305872B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B43K29/00—Combinations of writing implements with other articles
    • B43K29/02—Combinations of writing implements with other articles with rubbers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K21/00—Propelling pencils
    • B43K21/02—Writing-core feeding mechanisms
    • B43K21/06—Writing-core feeding mechanisms with the writing-cores fed by means sliding in longitudinally-slotted casings

Definitions

  • the invention relates to a writing instrument with a tubular base body and an actuating device for extending and retracting or pushing the lead and a displaceable eraser arranged at the rear end.
  • Such writing instruments are conventionally constructed so that the refill can be extended or released for pushing back by means of a push button at the rear end of the base body of the device.
  • a push button designed as a cap
  • an eraser is inserted into a sleeve, which serves as a storage container for a plurality of mines.
  • DE-PS 652 492 discloses a pen with a movable and lockable lead and one to be advanced and retractable eraser, which can also be locked in any position. Both the lead and the eraser can be moved longitudinally with the aid of a common actuating device in the form of a clamping ring and can be clamped in place by rotating this clamping ring.
  • the disadvantage here is that in order to prepare an erasing process after first writing the mine, the clamp is released, then the mine back and the eraser pushed out and finally the eraser must be clamped. The handling of this pen is therefore cumbersome and is no longer sufficient for modern, fast-writing people.
  • a propelling pencil with a tubular base body is also known, which is equipped at its rear end with a displaceable eraser.
  • This eraser can be moved in and out of the base body, for which purpose an actuating device is provided in the form of a cap which can be rotated in both directions in connection with an internal thread.
  • the handling of this eraser is also cumbersome when working quickly (DE-PS 695 425).
  • the invention has for its object to design a writing instrument so that the handling of the eraser is simplified and improved. This object is achieved according to the invention by the objective features of the characterizing part of patent claim 1.
  • the back of such a writing instrument is free for receiving an eraser, so that it can be stored and pushed out.
  • the eraser when it is needed, can be easily brought into the desired use position and can be extended more or less depending on the load. After use, the eraser is retracted into the interior of the base of the writing instrument, so that a Pollution of the same is avoided.
  • This construction also makes it possible to make the diameter of the eraser relatively large, so that it is also suitable for extensive erasing work.
  • the two sleeve sections add up to a complete sleeve via an axial section of the base body.
  • the sleeve-like actuating device provided for the lead adjusting device performs the function which is conventionally carried out by a push button arranged on the back of the pen.
  • the end or intermediate position stability of the actuating device for the eraser is advantageously achieved by a defined static friction between the second sleeve section and the base body.
  • a defined static friction can best be achieved in that the actuating device comprises a sleeve section which at least partially encompasses the base body and abuts against it.
  • a relatively large friction surface which ensures a defined static friction is formed.
  • this construction also has the advantage that the sleeve section is pressed against the base body when the writing instrument is being erased, thereby fixing the selected extension state of the eraser.
  • the eraser is positively fastened in a cup-like holder which is connected to its actuating device. This makes it possible to make the eraser interchangeable so that it can be replaced after use, or to use an eraser of the desired hardness.
  • the first actuating device for the lead adjusting device has an attachment which passes through a first longitudinal slot of the base body and is connected to an attachment of the lead adjusting device.
  • the actuating device for the eraser has an attachment which penetrates a longitudinal slot of the base body and is connected to an attachment of the cup-like holder for the eraser.
  • the approach of the first actuating device is connected to the approach of the lead adjusting device, and the approach of the second actuating device is connected to the approach of the holder by means of ultrasonic welding. In this way it is possible to establish the connection in the preassembled state. The same applies to the actuating device of the mine adjustment device.
  • the writing instrument shown in the drawing is designed as a fine lead pen and has a tubular base body 1. On the front of this base body 1 there is a grip sleeve 2, which is provided on the outside with a ribbing which increases the grip in the form of a plurality of concentric, circumferential grooves 3 .
  • the grip sleeve 2 is rotatable about a tip section 4 and is countersunk with respect to the latter or with respect to the lateral surface 5 of the base body 1.
  • the tip section 4 has at its inner end a threaded section 6, not shown in detail in the drawing, which can be screwed into an internal thread of the base body 1 in such a way that the grip sleeve 2 can be fixed in a certain angular position. This makes it possible to set the type of lead used in each case and to make it visible for later use by means of a viewing window 7 and different markings placed underneath on the tip section 4.
  • the lead adjusting device 8 is only indicated schematically in FIG. 1, since it is common as such.
  • the lead adjusting device 8 is actuated via an actuating device 9 which has a first sleeve section 10 which, as can be seen in FIG. On the sleeve portion 10, a clip 11 is attached to the writing instrument or the like in a known manner. to be able to attach.
  • a shoulder 12 of the sleeve section 10 passes through a longitudinal slot 13 in the lateral surface 5 of the base body 1 and is ultrasonically welded to a shoulder 14 made of plastic of the mine adjusting device 8.
  • the actuating device 9 is moved forward in the direction of the arrow 16.
  • a shoulder 17 of the clip 11 serves as a comfortable stop for the actuating thumb.
  • the approach 14 transmits the actuating force in the axial direction to the mine adjusting device 8.
  • the mine 15 is reset in a manner known per se by means of a push button 18 which is arranged in the outer surface 5 and which interacts with a spring 19 which is only indicated.
  • an eraser 21 is arranged, which is positively fixed in a cup-like recess 22 of a holder 23, so that it can be replaced if necessary.
  • the holder 23 has an extension 24 which is provided with an inclined surface 25 which is offset from a parallel inclined surface 26 of the extension 14 in the interior of the base body 1.
  • the neck 24 is ultrasonically welded to a neck 27 which passes through a second longitudinal slot 28 in the lateral surface 5 of the base body 1 and is integrally connected to a second sleeve section 29.
  • the sleeve section 29 forms with the extension 27 an actuating device 30 for the adjustment of the eraser 21.
  • the eraser 21 After a longitudinal displacement in the direction of arrow 33, the eraser 21 remains in an end position that has been set once, since there is a defined static friction between the lateral surface 5 and the second sleeve section 29 and, moreover, the static friction caused by the sleeve section 29 engaging, due to its flat design definitely grasping finger is increased.
  • a particularly appealing design is also achieved in that the two sleeve sections 10 and 29 practically complete a complete sleeve over a certain axial section of the base body 1, the rear edges 31, 32 of the two sleeve sections 10, 29 being aligned with one another in the basic position.

Landscapes

  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Knives (AREA)
  • Clips For Writing Implements (AREA)
EP88113757A 1987-08-29 1988-08-24 Feinminenstift o. dgl. Expired - Lifetime EP0305872B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3728954 1987-08-29
DE19873728954 DE3728954A1 (de) 1987-08-29 1987-08-29 Feinminenstift o. dgl.

Publications (2)

Publication Number Publication Date
EP0305872A1 EP0305872A1 (de) 1989-03-08
EP0305872B1 true EP0305872B1 (de) 1992-01-02

Family

ID=6334819

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88113757A Expired - Lifetime EP0305872B1 (de) 1987-08-29 1988-08-24 Feinminenstift o. dgl.

Country Status (3)

Country Link
EP (1) EP0305872B1 (enrdf_load_stackoverflow)
DE (2) DE3728954A1 (enrdf_load_stackoverflow)
WO (1) WO1989001877A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102435804B1 (ko) 2016-03-25 2022-08-24 동아연필 주식회사 열변색성 필기구

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE695425C (de) * 1937-12-31 1940-08-24 Adam Eberle Drehbleistift mit einem durch eine Schraubvorrichtung verschiebbaren Radiergummi

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR340079A (fr) * 1904-02-01 1904-06-25 Hermann Purschke Porte-plume, crayon, couteau, lime pour les ongles et cachet disposés sur une douille
US1379608A (en) * 1917-10-25 1921-05-31 Bailey David Eraser and pencil holder
FR501114A (fr) * 1920-11-18 1920-04-02 Charles Rood Keeran Perfectionnements aux porte-mines
US1633135A (en) * 1924-12-03 1927-06-21 Sheley George Tillman Pencil clip and eraser holder combined
US2016715A (en) * 1934-05-08 1935-10-08 Carl C Harris Eraser
DE652492C (de) * 1934-07-25 1937-11-01 Haack Sparbleistift G M B H Schreibstift mit einem auf einer laengs geschlitzten Huelse gefuehrten und Klemmbacken umschliessenden Klemmring
US2535823A (en) * 1948-10-05 1950-12-26 Lloyd C Van Benschoten Pencil attachment
US2785655A (en) * 1953-02-09 1957-03-19 Stephen R Leathers Eraser holding attachment for pencils
US2985655A (en) * 1957-10-31 1961-05-23 American Cyanamid Co Preparation of nu-chlorinated iso cyanuric acids
DE1219825B (de) * 1961-01-24 1966-06-23 Jacob Ritter K G Schreibstift, insbesondere Kugelschreiber, mit laengsverstellbarer Schreibmine
US3146758A (en) * 1961-07-03 1964-09-01 W A Shaeffer Pen Company Writing implement
US3652172A (en) * 1970-03-04 1972-03-28 Nathan A Zepell Sliding clip actuated pen
DE3444819C1 (de) * 1984-12-08 1986-08-21 Jacob Ritter GmbH & Co KG, 6101 Brensbach Schreibstift, insbesondere Kugelschreiber

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE695425C (de) * 1937-12-31 1940-08-24 Adam Eberle Drehbleistift mit einem durch eine Schraubvorrichtung verschiebbaren Radiergummi

Also Published As

Publication number Publication date
DE3728954A1 (de) 1989-03-16
DE3867388D1 (de) 1992-02-13
WO1989001877A1 (en) 1989-03-09
EP0305872A1 (de) 1989-03-08
DE3728954C2 (enrdf_load_stackoverflow) 1990-05-03

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