EP1177917A1 - Pen with plastic body having improved grip - Google Patents

Pen with plastic body having improved grip Download PDF

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Publication number
EP1177917A1
EP1177917A1 EP01117791A EP01117791A EP1177917A1 EP 1177917 A1 EP1177917 A1 EP 1177917A1 EP 01117791 A EP01117791 A EP 01117791A EP 01117791 A EP01117791 A EP 01117791A EP 1177917 A1 EP1177917 A1 EP 1177917A1
Authority
EP
European Patent Office
Prior art keywords
pen
plastic body
regions
photoengraving
recesses
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Withdrawn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
EP01117791A
Other languages
German (de)
English (en)
French (fr)
Inventor
Lucia Franceschi
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
Application filed by Individual filed Critical Individual
Publication of EP1177917A1 publication Critical patent/EP1177917A1/en
Withdrawn legal-status Critical Current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
    • B43K23/00—Holders or connectors for writing implements; Means for protecting the writing-points
    • B43K23/008—Holders comprising finger grips
    • 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
    • B43K5/005—Pen barrels

Definitions

  • the present invention relates to a pen with a plastic body having improved grip.
  • the surface is finished by using the electrical discharge machining technique which increases the roughness of the surface but has practical limitations, because in order to provide a surface having raised portions and recesses which are smooth as a whole (and therefore visually have a better impact) it is necessary to work with rather high machining thicknesses, producing undercuts which can cause problems in extraction from the injection mold or prevent it altogether.
  • the usual finishes produced by using the electrical discharge machining technique have a rough, opaque visual appearance and are not particularly pleasant.
  • the aim of the present invention is to provide a pen with plastic body that has an improved grip with respect to pens having a smooth body with a level surface and which visually has raised portions and/or recesses in the grip regions that have a smooth finish.
  • a consequent primary object is to provide a pen whose improved-grip regions can be provided with raised portions and recesses arranged in an orderly manner so as to form designs, lettering or others.
  • Another important object is to keep the thickness of the body equal to the thickness of pens having a level surface and a smooth finish without weakening the body.
  • Another object is to provide a pen that can be mass-produced at low cost with conventional equipment and systems.
  • a pen with plastic body characterized in that the outer surface, at least in the hand grip regions, has at least partially a finish produced by photoengraving.
  • the brass model 12 is subjected to a surface treatment in regions 13, which will become the grip regions of the body 10, by photoengraving so as to provide a surface with raised portions and recesses arranged randomly, or a surface on which designs or other graphic markings are engraved.
  • the brass model is then immersed in a galvanic bath 14, and a layer 15 of nickel with a thickness of approximately 4-5 mm deposits on its surface.
  • a matrix (designated by the same reference numeral) is thus produced which is then used as a female mold element for the injection-molding of the body 10.
  • Figure 4 schematically illustrates molding performed with the nickel matrix 15, a male element 16 and the body 10 formed between them by injecting melted plastics.
  • the body 10 is obtained, which exactly reproduces the shapes of the brass model 12.
  • Figure 5 illustrates the regions of the body 10 whose finish matches the photoengraving surface treatment.
  • the one designated by the reference numeral 17a has a herringbone pattern, while the regions designated by the reference numerals 17b and 17c have randomly shaped low-relief designs.
  • the visual effect that can be provided is that the raised portions and recesses still appear smooth (although the photoengraving finishing treatment can provide a rough finish).
  • the body of a plastic pen has in fact been provided which has improved-grip regions having raised portions and recesses which do not produce undercut problems for mold extraction operations.
  • the pen body can be mass-produced at low cost.
  • the materials employed may be any according to requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pens And Brushes (AREA)
  • Laminated Bodies (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
EP01117791A 2000-08-02 2001-08-02 Pen with plastic body having improved grip Withdrawn EP1177917A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2000PD000056 IT249406Y1 (it) 2000-08-02 2000-08-02 Penna con corpo in materia plastica a presa migliorata.
ITPD000056U 2000-08-02

Publications (1)

Publication Number Publication Date
EP1177917A1 true EP1177917A1 (en) 2002-02-06

Family

ID=11451853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01117791A Withdrawn EP1177917A1 (en) 2000-08-02 2001-08-02 Pen with plastic body having improved grip

Country Status (2)

Country Link
EP (1) EP1177917A1 (it)
IT (1) IT249406Y1 (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005028213A2 (en) * 2003-09-19 2005-03-31 A.W. Faber-Castell S.A. Manufacturing a pencil having gripping grooves

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2854336A (en) * 1955-03-07 1958-09-30 Youngstown Arc Engraving Compa Method of forming a two-level photoengraved embossing plate or mold
EP0982151A1 (en) * 1998-08-28 2000-03-01 Kotobuki & Co. Ltd. Writing utensil

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2854336A (en) * 1955-03-07 1958-09-30 Youngstown Arc Engraving Compa Method of forming a two-level photoengraved embossing plate or mold
EP0982151A1 (en) * 1998-08-28 2000-03-01 Kotobuki & Co. Ltd. Writing utensil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005028213A2 (en) * 2003-09-19 2005-03-31 A.W. Faber-Castell S.A. Manufacturing a pencil having gripping grooves
WO2005028213A3 (en) * 2003-09-19 2005-05-06 A W Faber Castell S A Manufacturing a pencil having gripping grooves

Also Published As

Publication number Publication date
IT249406Y1 (it) 2003-05-07
ITPD20000056U1 (it) 2002-02-02
ITPD20000056V0 (it) 2000-08-02

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